diff --git a/README.md b/README.md
index 5982022..fe32a39 100644
--- a/README.md
+++ b/README.md
@@ -47,6 +47,12 @@ ta4_jetpack requires the modpack 3d_armor. 3d_armor is itself a modpack and can'
 ### History
 
 
+#### 2022-08-17
+
+Updated Mods:
+- techage (fix "Invalid field use_texture_alpha" errors)
+
+
 #### 2022-08-06
 
 Updated Mods:
diff --git a/lcdlib/mod.conf b/lcdlib/mod.conf
index 4e0f72f..602f95a 100644
--- a/lcdlib/mod.conf
+++ b/lcdlib/mod.conf
@@ -1 +1 @@
-name = lcdlib
\ No newline at end of file
+name = lcdlib
diff --git a/networks/README.md b/networks/README.md
index 2628d3f..5a197dd 100644
--- a/networks/README.md
+++ b/networks/README.md
@@ -80,7 +80,7 @@ All this testing nodes can be enabled via mod settings `networks_test_enabled =
 
 ### License
 
-Copyright (C) 2021 Joachim Stolberg  
+Copyright (C) 2021-2022 Joachim Stolberg  
 Code: Licensed under the GNU AGPL version 3 or later. See LICENSE.txt  
 Textures: CC BY-SA 3.0  
 
@@ -128,3 +128,6 @@ Required: tubelib2
 
 **2022-01-06  V0.11**
 - Support for junction rotation added
+
+**2022-09-10  V0.12**
+- New API function `networks.liquid.get_liquids` added
diff --git a/networks/init.lua b/networks/init.lua
index 82786b5..8810e7b 100644
--- a/networks/init.lua
+++ b/networks/init.lua
@@ -13,7 +13,7 @@
 networks = {}
 
 -- Version for compatibility checks, see readme.md/history
-networks.version = 0.11
+networks.version = 0.12
 
 if not minetest.global_exists("tubelib2") or tubelib2.version < 2.2 then
 	minetest.log("error", "[networks] Networks requires tubelib2 version 2.2 or newer!")
diff --git a/networks/liquid.lua b/networks/liquid.lua
index 1082cc9..3b1b262 100644
--- a/networks/liquid.lua
+++ b/networks/liquid.lua
@@ -265,3 +265,31 @@ function networks.liquid.turn_valve_off(pos, tlib2, name_off, name_on)
 		return true
 	end
 end
+
+-------------------------------------------------------------------------------
+-- Info/Tools
+-------------------------------------------------------------------------------
+-- Return list of liquids of connected tanks
+-- Node at pos must be a pump
+function networks.liquid.get_liquids(pos, tlib2)
+	local tbl = {}
+	for _, dir in ipairs(networks.get_node_connection_dirs(pos, tlib2.tube_type)) do
+		for _,item in ipairs(get_network_table(pos, tlib2, dir, "tank")) do
+			local liq = LQD(item.pos)
+			if liq and liq.peek then
+				local liq_name = liq.peek(item.pos, item.indir)
+				if liq_name then
+					local def = minetest.registered_items[liq_name] or minetest.registered_craftitems[liq_name]
+					if def then
+						tbl[def.description] = true
+					end
+				end
+			end
+		end
+	end
+	local out = {}
+	for k,v in pairs(tbl) do
+		out[#out + 1] = k
+	end
+	return out
+end
\ No newline at end of file
diff --git a/signs_bot/README.md b/signs_bot/README.md
index 377bfd1..18b2082 100644
--- a/signs_bot/README.md
+++ b/signs_bot/README.md
@@ -57,7 +57,8 @@ The mod has an in-game help to all blocks and signs. Therefore, it is highly rec
 The commands are also all described as help in the "Sign command" node.
 All blocks or signs that are set are taken from the bot inventory.
 Any blocks or signs removed will be added back to the Bot Inventory.
-For all Inventory commands applies: If the inventory stack specified by <slot> is full, so that nothing more can be done, or just empty, so that nothing more can be removed, the next slot will automatically be used.
+`<slot>` is always the bot internal inventory stack (1..8).
+For all Inventory commands applies: If the bot inventory stack specified by `<slot>` is full, so that nothing more can be done, or just empty, so that nothing more can be removed, the next slot will automatically be used.
 
     move <steps>              - to follow one or more steps forward without signs
     cond_move                 - walk to the next sign and work it off
@@ -69,6 +70,7 @@ For all Inventory commands applies: If the inventory stack specified by <slot> i
     pause <sec>               - wait one or more seconds
     move_up                   - move up (maximum 2 times)
     move_down                 - move down
+    fall_down                 - fall into a hole/chasm (up to 10 blocks)
     take_item <num> <slot>    - take one or more items from a box
     add_item <num> <slot>     - put one or more items in a box
     add_fuel <num> <slot>     - for furnaces or similar
@@ -106,6 +108,20 @@ For all Inventory commands applies: If the inventory stack specified by <slot> i
     flame_on                  - Make fire
     flame_off                 - Put out the fire
 
+#### Techage specific commands
+
+    ignite                            - Ignite the techage charcoal lighter
+    low_batt <percent>                - Turn the bot off if the battery power is below the 
+                                        given value in percent (1..99)
+    jump_low_batt <percent> <label>   - Jump to <label> if the battery power is below the 
+                                        given value in percent (1..99)
+                                        (see "Flow control commands")
+    send_cmnd <receiver> <command>    - Send a techage command to a given node. 
+                                        Receiver is addressed by the techage node number. 
+                                        For commands with two or more words, use the '*' character
+                                        instead of spaces, e.g.: send_cmnd 3465 pull*default:dirt*2 
+
+
 #### Flow control commands
 
     jump <label>    -- jump command, <label> is a word from the characters a-z or A-Z
@@ -115,6 +131,16 @@ For all Inventory commands applies: If the inventory stack specified by <slot> i
     end             -- end of a loop block
     call <label>    -- call of a function (with return via the command 'return')
 
+#### Further jump commands
+
+    jump_check_item <num> <slot> <label>  - Check if there are <num> items in the chest like node.
+    		                                If not, jump to <label>.
+                                            <slot> is the bot inventory slot (1..8) to specify the item,
+    		                                or 0 for any item.
+    jump_low_batt <percent> <label>       - See "Techage specific commands"
+
+
+
 Example with a function at the beginning:
 
     jump main       -- jump to the label 'main'
@@ -149,7 +175,7 @@ Or alternatively with the function at the end:
     return          -- end of 'foo'. Jump back
 
 ### License
-Copyright (C) 2019-2021 Joachim Stolberg
+Copyright (C) 2019-2022 Joachim Stolberg
 Copyright (C) 2021 Michal 'Micu' Cieslakiewicz (soup commands)
 Code: Licensed under the GNU GPL version 3 or later. See LICENSE.txt  
 
@@ -185,5 +211,6 @@ optional: farming redo, node_io, doc, techage, minecart, xdecor, compost
 - 2021-08-22  v1.09  * Add soup commands and signs, add aspen sign
 - 2021-09-18  v1.10  * Add techage command 'set <num>' to the Bot Control Unit
 - 2022-03-19  V1.11  * Extend farming (and add ethereal) support (Thanks to nixnoxus)
+- 2022-09-11  V1.12  * Add commands `jump_low_batt` , `jump_check_item`, and `fall_down`
 
 
diff --git a/signs_bot/basis.lua b/signs_bot/basis.lua
index aacd1dc..67cddea 100644
--- a/signs_bot/basis.lua
+++ b/signs_bot/basis.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Signs Bot: Robot basis block
 
 ]]--
@@ -38,7 +38,7 @@ function signs_bot.bot_inv_item_name(pos, slot)
 	local name = inv:get_stack("filter", slot):get_name()
 	if name ~= "" then return name end
 end
-	
+
 -- put items into the bot inventory and return leftover
 function signs_bot.bot_inv_put_item(pos, slot, items)
 	if not items then return end
@@ -73,7 +73,7 @@ local function take_items(inv, slot, num)
 	else
 		inv:set_stack("main", slot, nil)
 		local rest = num - stack:get_count()
-		local taken = inv:remove_item("main", ItemStack(stack:get_name().." "..rest)) 
+		local taken = inv:remove_item("main", ItemStack(stack:get_name().." "..rest))
 		stack:set_count(stack:get_count() + taken:get_count())
 		return stack
 	end
@@ -124,11 +124,11 @@ local function status(mem)
 		return S("charging")
 	end
 	return S("stopped")
-end	
+end
 
 local function formspec(pos, mem)
 	mem.running = mem.running or false
-	local cmnd = mem.running and "stop;"..S("Off") or "start;"..S("On") 
+	local cmnd = mem.running and "stop;"..S("Off") or "start;"..S("On")
 	local bot = not mem.running and "image[0.6,0;1,1;signs_bot_bot_inv.png]" or ""
 	local current_capa = mem.capa or (signs_bot.MAX_CAPA * 0.9)
 	return "size[9,8.2]"..
@@ -209,7 +209,7 @@ local function reset_robot(pos, mem)
 	mem.robot_param2 = (minetest.get_node(pos).param2 + 1) % 4
 	mem.robot_pos = lib.next_pos(pos, mem.robot_param2, 1)
 	local pos_below = {x=mem.robot_pos.x, y=mem.robot_pos.y-1, z=mem.robot_pos.z}
-	signs_bot.place_robot(mem.robot_pos, pos_below, mem.robot_param2)	
+	signs_bot.place_robot(mem.robot_pos, pos_below, mem.robot_param2)
 end
 
 function signs_bot.start_robot(base_pos)
@@ -306,7 +306,7 @@ local function on_receive_fields(pos, formname, fields, player)
 	end
 	local mem = tubelib2.get_mem(pos)
 	local meta = minetest.get_meta(pos)
-	
+
 	if fields.update then
 		meta:set_string("formspec", formspec(pos, mem))
 	elseif fields.config then
@@ -337,7 +337,7 @@ local function allow_metadata_inventory_put(pos, listname, index, stack, player)
 	if listname == "sign" and minetest.get_item_group(name, "sign_bot_sign") ~= 1 then
 		return 0
 	end
-	if listname == "main" and bot_inv_item_name(pos, index) and 
+	if listname == "main" and bot_inv_item_name(pos, index) and
 				name ~= bot_inv_item_name(pos, index) then
 		return 0
 	end
@@ -376,7 +376,7 @@ local function allow_metadata_inventory_move(pos, from_list, from_index, to_list
 	end
 	local inv = M(pos):get_inventory()
 	local name = inv:get_stack(from_list, from_index):get_name()
-	if to_list == "main" and bot_inv_item_name(pos, to_index) and 
+	if to_list == "main" and bot_inv_item_name(pos, to_index) and
 				name ~= bot_inv_item_name(pos, to_index) then
 		return 0
 	end
@@ -388,7 +388,7 @@ local function allow_metadata_inventory_move(pos, from_list, from_index, to_list
 		return 0
 	end
 	return count
-end	
+end
 
 local drop = "signs_bot:box"
 if minetest.global_exists("techage") then
@@ -415,7 +415,7 @@ minetest.register_node("signs_bot:box", {
 		inv:set_size('sign', 6)
 		inv:set_size('filter', 8)
 	end,
-	
+
 	after_place_node = function(pos, placer, itemstack)
 		if not placer or not placer:is_player() then
 			minetest.remove_node(pos)
@@ -448,7 +448,7 @@ minetest.register_node("signs_bot:box", {
 	allow_metadata_inventory_put = allow_metadata_inventory_put,
 	allow_metadata_inventory_take = allow_metadata_inventory_take,
 	allow_metadata_inventory_move = allow_metadata_inventory_move,
-	
+
 	can_dig = function(pos, player)
 		if minetest.is_protected(pos, player:get_player_name()) then
 			return
@@ -460,11 +460,11 @@ minetest.register_node("signs_bot:box", {
 		local inv = M(pos):get_inventory()
 		return inv:is_empty("main") and inv:is_empty("sign")
 	end,
-	
+
 	on_dig = function(pos, node, puncher, pointed_thing)
 		minetest.node_dig(pos, node, puncher, pointed_thing)
 	end,
-	
+
 	after_dig_node = function(pos, oldnode, oldmetadata, digger)
 		if minetest.global_exists("techage") then
 			techage.ElectricCable:after_dig_node(pos)
@@ -476,7 +476,7 @@ minetest.register_node("signs_bot:box", {
 
 	on_timer = node_timer,
 	on_rotate = screwdriver.disallow,
-	
+
 	drop = drop,
 	paramtype2 = "facedir",
 	is_ground_content = false,
@@ -513,7 +513,7 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:box",
 			text = table.concat({
 				S("The Box is the housing of the bot."),
-				S("Place the box and start the bot by means of the 'On' button."), 
+				S("Place the box and start the bot by means of the 'On' button."),
 				S("If the mod techage is installed, the bot needs electrical power."),
 				"",
 				S("The bot leaves the box on the right side."),
@@ -524,7 +524,7 @@ if minetest.get_modpath("doc") then
 				S("The box inventory simulates the inventory of the bot."),
 				S("You will not be able to access the inventory, if the bot is running."),
 				S("The bot can carry up to 8 stacks and 6 signs with it."),
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/bot_flap.lua b/signs_bot/bot_flap.lua
index ed2ecaa..f3a938c 100644
--- a/signs_bot/bot_flap.lua
+++ b/signs_bot/bot_flap.lua
@@ -7,7 +7,7 @@
 
 	GPLv3
 	See LICENSE.txt for more information
-	
+
 	Signs Bot: Bot Flap
 
 ]]--
@@ -70,7 +70,7 @@ if minetest.get_modpath("doc") then
 				S("The flap is a simple block used as door for the bot."),
 				S("Place the flap in any wall, and the bot will automatically open"),
 				S("and close the flap as it passes through it."),
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/bot_sensor.lua b/signs_bot/bot_sensor.lua
index 0d2e90f..6872f67 100644
--- a/signs_bot/bot_sensor.lua
+++ b/signs_bot/bot_sensor.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Bot Sensor
 	(passive node, the Bot detects the sensor and sends the signal)
 ]]--
@@ -22,7 +22,7 @@ local S = signs_bot.S
 
 local function update_infotext(pos, dest_pos, cmnd)
 	M(pos):set_string("infotext", S("Bot Sensor: Connected with").." "..P2S(dest_pos).." / "..cmnd)
-end	
+end
 
 minetest.register_node("signs_bot:bot_sensor", {
 	description = S("Bot Sensor"),
@@ -43,12 +43,12 @@ minetest.register_node("signs_bot:bot_sensor", {
 		"signs_bot_sensor2.png",
 		"signs_bot_sensor2.png",
 	},
-	
+
 	after_place_node = function(pos, placer)
 		local meta = M(pos)
 		meta:set_string("infotext", S("Bot Sensor: Not connected"))
 	end,
-	
+
 	update_infotext = update_infotext,
 	on_rotate = screwdriver.disallow,
 	paramtype = "light",
@@ -78,21 +78,21 @@ minetest.register_node("signs_bot:bot_sensor_on", {
 		"signs_bot_sensor2.png",
 		"signs_bot_sensor2.png",
 	},
-	
+
 	-- Called from the Bot
 	after_place_node = function(pos)
 		minetest.get_node_timer(pos):start(1)
 		signs_bot.send_signal(pos)
 		signs_bot.lib.activate_extender_nodes(pos, true)
 	end,
-		
+
 	on_timer = function(pos)
 		local node = tubelib2.get_node_lvm(pos)
 		node.name = "signs_bot:bot_sensor"
 		minetest.swap_node(pos, node)
 		return false
 	end,
-	
+
 	update_infotext = update_infotext,
 	on_rotate = screwdriver.disallow,
 	paramtype = "light",
@@ -122,9 +122,9 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:bot_sensor",
 			text = table.concat({
 				S("The Bot Sensor detects any bot and sends a signal, if a bot is nearby."),
-				S("the sensor range is one node/meter."), 
+				S("the sensor range is one node/meter."),
 				S("The sensor direction does not care."),
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/cart_sensor.lua b/signs_bot/cart_sensor.lua
index 350e035..0e922ad 100644
--- a/signs_bot/cart_sensor.lua
+++ b/signs_bot/cart_sensor.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Cart Sensor
 
 ]]--
@@ -26,7 +26,7 @@ local CYCLE_TIME = 2
 
 local function update_infotext(pos, dest_pos, dest_idx)
 	M(pos):set_string("infotext", S("Cart Sensor: Connected with").." "..P2S(dest_pos).." / "..dest_idx)
-end	
+end
 
 local function swap_node(pos, name)
 	local node = minetest.get_node(pos)
@@ -37,7 +37,7 @@ local function swap_node(pos, name)
 	minetest.swap_node(pos, node)
 	return true
 end
-	
+
 local function node_timer(pos)
 	if minecart.is_cart_available(pos, M(pos):get_int("param2"), 1) then
 		if swap_node(pos, "signs_bot:cart_sensor_on") then
@@ -69,7 +69,7 @@ minetest.register_node("signs_bot:cart_sensor", {
 		"signs_bot_sensor1.png^[transformFXR90",
 		"signs_bot_sensor1.png^[transformFXR180",
 	},
-	
+
 	after_place_node = function(pos, placer)
 		local meta = M(pos)
 		meta:set_string("infotext", S("Cart Sensor: Not connected"))
@@ -77,7 +77,7 @@ minetest.register_node("signs_bot:cart_sensor", {
 		local node = minetest.get_node(pos)
 		meta:set_int("param2", (node.param2 + 2) % 4)
 	end,
-	
+
 	on_timer = node_timer,
 	update_infotext = update_infotext,
 	on_rotate = screwdriver.disallow,
@@ -108,7 +108,7 @@ minetest.register_node("signs_bot:cart_sensor_on", {
 		"signs_bot_sensor1.png^[transformFXR90",
 		"signs_bot_sensor1.png^[transformFXR180",
 	},
-			
+
 	on_timer = node_timer,
 	update_infotext = update_infotext,
 	on_rotate = screwdriver.disallow,
@@ -152,9 +152,9 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:cart_sensor",
 			text = table.concat({
 				S("The Cart Sensor detects and sends a signal, if a cart (Minecart) is nearby."),
-				S("the sensor range is one node/meter."), 
+				S("the sensor range is one node/meter."),
 				S("The sensor has an active side (red) that must point to the rail/cart."),
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/changer.lua b/signs_bot/changer.lua
index 979f747..d7e3e02 100644
--- a/signs_bot/changer.lua
+++ b/signs_bot/changer.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Signs Changer/Control Unit for Bot Control
 
 ]]--
@@ -129,7 +129,7 @@ for idx = 1,4 do
 			local inv = meta:get_inventory()
 			inv:set_size('sign', 4)
 		end,
-		
+
 		after_place_node = function(pos, placer)
 			local meta = minetest.get_meta(pos)
 			meta:set_string("formspec", formspec)
@@ -140,7 +140,7 @@ for idx = 1,4 do
 				techage.logic.infotext(meta, S("Bot Control Unit"))
 			end
 		end,
-		
+
 		signs_bot_get_signal = signs_bot_get_signal,
 		signs_bot_on_signal = signs_bot_on_signal,
 		allow_metadata_inventory_put = allow_metadata_inventory,
@@ -176,14 +176,14 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:changer1",
 			text = table.concat({
 				S("The Bot Control Unit is used to lead the bot by means of signs."),
-				S("The unit can be loaded with up to 4 different signs and can be programmed by means of sensors."), 
+				S("The unit can be loaded with up to 4 different signs and can be programmed by means of sensors."),
 				"",
 				S("To load the unit, place a sign on the red side of the unit and click on the unit."),
 				S("The sign disappears / is moved to the inventory of the unit."),
 				S("This can be repeated 3 times."),
 				"",
 				S("Use the connection tool to connect up to 4 sensors with the Bot Control Unit."),
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
@@ -204,5 +204,5 @@ if minetest.get_modpath("techage") then
 				return "unsupported"
 			end
 		end,
-	})	
+	})
 end
diff --git a/signs_bot/chest.lua b/signs_bot/chest.lua
index 024f977..c38a906 100644
--- a/signs_bot/chest.lua
+++ b/signs_bot/chest.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Signs Bot Chest
 
 ]]--
@@ -51,8 +51,8 @@ local function update_infotext(pos, dest_pos, cmnd)
 	local state = get_inv_state(pos)
 	meta:set_string("infotext", S("Bot Chest: Sends signal to").." "..P2S(dest_pos).." / "..cmnd..", if "..state)
 	meta:set_string("state", state)
-	
-end	
+
+end
 
 local function formspec()
 	return "size[9,8]"..
@@ -83,7 +83,7 @@ if NODE_IO then
 			local inv = meta:get_inventory()
 			inv:set_size('main', 32)
 		end,
-		
+
 		after_place_node = function(pos, placer)
 			local mem = tubelib2.init_mem(pos)
 			mem.running = false
@@ -147,7 +147,7 @@ if NODE_IO then
 				return left_over
 			end
 		end,
-		
+
 		update_infotext = update_infotext,
 		on_rotate = screwdriver.disallow,
 		paramtype2 = "facedir",
@@ -173,7 +173,7 @@ else
 			local inv = meta:get_inventory()
 			inv:set_size('main', 32)
 		end,
-		
+
 		after_place_node = function(pos, placer)
 			local mem = tubelib2.init_mem(pos)
 			mem.running = false
@@ -212,7 +212,7 @@ else
 		groups = {cracky = 1, sign_bot_sensor = 1},
 		sounds = default.node_sound_metal_defaults(),
 	})
-end	
+end
 
 signs_bot.register_inventory({"signs_bot:chest"}, {
 	put = {
@@ -220,7 +220,7 @@ signs_bot.register_inventory({"signs_bot:chest"}, {
 			local owner = M(pos):get_string("owner")
 			minetest.after(1, check_state, pos)
 			return owner == player_name
-		end, 
+		end,
 		listname = "main",
 	},
 	take = {
@@ -228,7 +228,7 @@ signs_bot.register_inventory({"signs_bot:chest"}, {
 			local owner = M(pos):get_string("owner")
 			minetest.after(1, check_state, pos)
 			return owner == player_name
-		end, 
+		end,
 		listname = "main",
 	},
 })
@@ -249,11 +249,11 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:chest",
 			text = table.concat({
 				S("The Signs Bot Chest is a special chest with sensor function."),
-				S("It sends a signal depending on the chest state."), 
+				S("It sends a signal depending on the chest state."),
 				S("Possible states are 'empty', 'not empty', 'almost full'"),
 				"",
 				S("A typical use case is to turn off the bot, when the chest is almost full or empty."),
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/cmd_farming.lua b/signs_bot/cmd_farming.lua
index 83519f6..59706a5 100644
--- a/signs_bot/cmd_farming.lua
+++ b/signs_bot/cmd_farming.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Bot farming commands
 ]]--
 
@@ -53,7 +53,7 @@ local function planting(base_pos, mem, slot)
 			end
 		end
 	end
-end	
+end
 
 signs_bot.register_botcommand("sow_seed", {
 	mod = "farming",
@@ -83,7 +83,7 @@ signs_bot.register_botcommand("sow_seed", {
 local function harvesting(base_pos, mem)
 	local pos = mem.pos_tbl and mem.pos_tbl[mem.steps]
 	mem.steps = (mem.steps or 1) + 1
-	
+
 	if pos and lib.not_protected(base_pos, pos) then
 		local node = minetest.get_node_or_nil(pos)
 		if signs_bot.FarmingCrop[node.name] then
@@ -135,15 +135,15 @@ local function plant_sapling(base_pos, mem, slot)
 		local item = stack and signs_bot.TreeSaplings[stack:get_name()]
 		if item and item.sapling then
 			minetest.set_node(pos, {name = item.sapling, paramtype2 = "wallmounted", param2 = 1})
-			if item.t1 ~= nil then 
+			if item.t1 ~= nil then
 				-- We have to simulate "on_place" and start the timer by hand
 				-- because the after_place_node function checks player rights and can't therefore
 				-- be used.
 				minetest.get_node_timer(pos):start(math.random(item.t1, item.t2))
-			end			
+			end
 		end
 	end
-end	
+end
 
 signs_bot.register_botcommand("plant_sapling", {
 	mod = "farming",
@@ -171,9 +171,9 @@ place_sign 1
 turn_around]]
 
 signs_bot.register_sign({
-	name = "farming", 
-	description = S('Sign "farming"'), 
-	commands = CMD, 
+	name = "farming",
+	description = S('Sign "farming"'),
+	commands = CMD,
 	image = "signs_bot_sign_farming.png",
 })
 
@@ -193,10 +193,10 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:farming",
 			text = table.concat({
 				S("Used to harvest and seed a 3x3 field."),
-				S("Place the sign in front of the field."), 
+				S("Place the sign in front of the field."),
 				S("The seed to be placed has to be in the first inventory slot of the bot."),
 				S("When finished, the bot turns."),
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/cmd_flowers.lua b/signs_bot/cmd_flowers.lua
index cc575d9..8124429 100644
--- a/signs_bot/cmd_flowers.lua
+++ b/signs_bot/cmd_flowers.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Bot flower cutting command
 ]]--
 
@@ -58,7 +58,7 @@ end
 local function harvesting(base_pos, mem)
 	local pos = mem.pos_tbl and mem.pos_tbl[mem.steps]
 	mem.steps = (mem.steps or 1) + 1
-	
+
 	if pos and lib.not_protected(base_pos, pos) then
 		local node = minetest.get_node_or_nil(pos)
 		if node.name ~= "default:papyrus" then
@@ -117,9 +117,9 @@ place_sign 1
 turn_around]]
 
 signs_bot.register_sign({
-	name = "flowers", 
-	description = S('Sign "flowers"'), 
-	commands = CMD, 
+	name = "flowers",
+	description = S('Sign "flowers"'),
+	commands = CMD,
 	image = "signs_bot_sign_flowers.png",
 })
 
@@ -139,9 +139,9 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:flowers",
 			text = table.concat({
 				S("Used to cut flowers on a 3x3 field."),
-				S("Place the sign in front of the field."), 
+				S("Place the sign in front of the field."),
 				S("When finished, the bot turns."),
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/cmd_item.lua b/signs_bot/cmd_item.lua
index 61dde86..d28fed7 100644
--- a/signs_bot/cmd_item.lua
+++ b/signs_bot/cmd_item.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Signs Bot: More commands
 
 ]]--
@@ -28,9 +28,9 @@ local RegisteredInventories = {}
 function signs_bot.robot_take(base_pos, robot_pos, param2, want_count, slot)
 	local target_pos = lib.next_pos(robot_pos, param2)
 	local node = tubelib2.get_node_lvm(target_pos)
-	local def = RegisteredInventories[node.name]	
+	local def = RegisteredInventories[node.name]
 	local owner = M(base_pos):get_string("owner")
-	
+
 	-- Is known type of inventory node?
 	if def and (not def.allow_take or def.allow_take(target_pos, nil, owner)) then
 		local src_inv = minetest.get_inventory({type="node", pos=target_pos})
@@ -40,7 +40,7 @@ function signs_bot.robot_take(base_pos, robot_pos, param2, want_count, slot)
 			local taken = src_inv:remove_item(def.take_listname, ItemStack(item_name.." "..want_count))
 			local leftover = signs_bot.bot_inv_put_item(base_pos, slot, taken)
 			src_inv:add_item(def.take_listname, leftover)
-		end	
+		end
 	end
 end
 
@@ -52,7 +52,7 @@ function signs_bot.robot_put(base_pos, robot_pos, param2, num, slot)
 	local def = RegisteredInventories[node.name]
 	local owner = M(base_pos):get_string("owner")
 	local taken = signs_bot.bot_inv_take_item(base_pos, slot, num)
-	
+
 	-- Is known type of inventory node?
 	if taken and def and (not def.allow_put or def.allow_put(target_pos, taken, owner)) then
 		local dst_inv = minetest.get_inventory({type="node", pos=target_pos})
@@ -65,6 +65,23 @@ function signs_bot.robot_put(base_pos, robot_pos, param2, num, slot)
 	end
 end
 
+function signs_bot.robot_peek(base_pos, robot_pos, param2, want_count, slot)
+	local target_pos = lib.next_pos(robot_pos, param2)
+	local node = tubelib2.get_node_lvm(target_pos)
+	local def = RegisteredInventories[node.name]
+	local owner = M(base_pos):get_string("owner")
+
+	-- Is known type of inventory node?
+	if def and (not def.allow_take or def.allow_take(target_pos, nil, owner)) then
+		local src_inv = minetest.get_inventory({type="node", pos=target_pos})
+		-- take specified item_name from bot slot configuration OR any item from the chest
+		local item_name = signs_bot.bot_inv_item_name(base_pos, slot) or lib.peek_inv(src_inv, def.take_listname)
+		if item_name then
+			return src_inv:contains_item(def.take_listname, ItemStack(item_name.." "..want_count))
+		end
+	end
+end
+
 -- From robot to furnace
 function signs_bot.robot_put_fuel(base_pos, robot_pos, param2, num, slot)
 	local target_pos = lib.next_pos(robot_pos, param2)
@@ -72,7 +89,7 @@ function signs_bot.robot_put_fuel(base_pos, robot_pos, param2, num, slot)
 	local def = RegisteredInventories[node.name]
 	local owner = M(base_pos):get_string("owner")
 	local taken = signs_bot.bot_inv_take_item(base_pos, slot, num)
-	
+
 	-- Is known type of inventory node?
 	if taken and def and (not def.allow_fuel or def.allow_fuel(target_pos, taken, owner)) then
 		local dst_inv = minetest.get_inventory({type="node", pos=target_pos})
@@ -85,18 +102,18 @@ end
 
 signs_bot.register_botcommand("take_item", {
 	mod = "item",
-	params = "<num> <slot>",	
+	params = "<num> <slot>",
 	num_param = 2,
 	description = S("Take <num> items from a chest like node\nand put it into the item inventory.\n"..
-		"<slot> is the inventory slot (1..8) or 0 for any one"),
+		"<slot> is the bot inventory slot\n(1..8) or 0 for any one"),
 	check = function(num, slot)
 		num = tonumber(num) or 1
-		if num < 1 or num > 99 then 
-			return false 
+		if num < 1 or num > 99 then
+			return false
 		end
 		slot = tonumber(slot) or 0
-		if slot < 0 or slot > 8 then 
-			return false 
+		if slot < 0 or slot > 8 then
+			return false
 		end
 		return true
 	end,
@@ -107,21 +124,50 @@ signs_bot.register_botcommand("take_item", {
 		return signs_bot.DONE
 	end,
 })
-	
-signs_bot.register_botcommand("add_item", {
+
+signs_bot.register_botcommand("jump_check_item", {
 	mod = "item",
-	params = "<num> <slot>",	
-	num_param = 2,
-	description = S("Add <num> items to a chest like node\ntaken from the item inventory.\n"..
-		"<slot> is the inventory slot (1..8) or 0 for any one"),
-	check = function(num, slot)
+	params = "<num> <slot> <label>",
+	num_param = 3,
+	description = S("Check if there are <num>\n"..
+		"items in the chest like node.\n"..
+		"If not, jump to <label>\n"..
+		"<slot> is the bot inventory slot\n"..
+		"(1..8) to specify the item, or 0 for any item"),
+	check = function(num, slot, lbl)
 		num = tonumber(num) or 1
-		if num < 1 or num > 99 then 
-			return false 
+		if num < 1 or num > 99 then
+			return false
 		end
 		slot = tonumber(slot) or 0
-		if slot < 0 or slot > 8 then 
-			return false 
+		if slot < 0 or slot > 8 then
+			return false
+		end
+		return signs_bot.check_label(lbl)
+	end,
+	cmnd = function(base_pos, mem, num, slot, addr)
+		num = tonumber(num) or 1
+		if not signs_bot.robot_peek(base_pos, mem.robot_pos, mem.robot_param2, num, slot) then
+			mem.pc = (addr or 4) - 4
+		end
+		return signs_bot.DONE
+	end,
+})
+
+signs_bot.register_botcommand("add_item", {
+	mod = "item",
+	params = "<num> <slot>",
+	num_param = 2,
+	description = S("Add <num> items to a chest like node\ntaken from the item inventory.\n"..
+		"<slot> is the bot inventory slot (1..8) or 0 for any one"),
+	check = function(num, slot)
+		num = tonumber(num) or 1
+		if num < 1 or num > 99 then
+			return false
+		end
+		slot = tonumber(slot) or 0
+		if slot < 0 or slot > 8 then
+			return false
 		end
 		return true
 	end,
@@ -132,21 +178,21 @@ signs_bot.register_botcommand("add_item", {
 		return signs_bot.DONE
 	end,
 })
-	
+
 signs_bot.register_botcommand("add_fuel", {
 	mod = "item",
 	params = "<num> <slot>",
 	num_param = 2,
 	description = S("Add <num> fuel to a furnace like node\ntaken from the item inventory.\n"..
-		"<slot> is the inventory slot (1..8) or 0 for any one"),
+		"<slot> is the bot inventory slot (1..8) or 0 for any one"),
 	check = function(num, slot)
 		num = tonumber(num) or 1
-		if num < 1 or num > 99 then 
-			return false 
+		if num < 1 or num > 99 then
+			return false
 		end
 		slot = tonumber(slot) or 0
-		if slot < 0 or slot > 8 then 
-			return false 
+		if slot < 0 or slot > 8 then
+			return false
 		end
 		return true
 	end,
@@ -164,20 +210,20 @@ signs_bot.register_botcommand("cond_take_item", {
 	num_param = 2,
 	description = S("deprecated, use bot inventory configuration instead"),
 	check = function(num, slot)
-		return false 
+		return false
 	end,
 	cmnd = function(base_pos, mem, num, slot)
 		return signs_bot.DONE
 	end,
 })
-	
+
 signs_bot.register_botcommand("cond_add_item", {
 	mod = "item",
 	params = "<num> <slot>",
 	num_param = 2,
 	description = S("deprecated, use bot inventory configuration instead"),
 	check = function(num, slot)
-		return false 
+		return false
 	end,
 	cmnd = function(base_pos, mem, num, slot)
 		return signs_bot.DONE
@@ -190,7 +236,7 @@ signs_bot.register_botcommand("pickup_items", {
 	num_param = 1,
 	description = S("Pick up all objects\n"..
 		"in a 3x3 field.\n"..
-		"<slot> is the inventory slot (1..8) or 0 for any one"),
+		"<slot> is the bot inventory slot (1..8) or 0 for any one"),
 	check = function(slot)
 		slot = tonumber(slot) or 0
 		return slot >= 0 and slot < 9
@@ -211,21 +257,21 @@ signs_bot.register_botcommand("pickup_items", {
 		return signs_bot.DONE
 	end,
 })
-	
+
 signs_bot.register_botcommand("drop_items", {
 	mod = "item",
 	params = "<num> <slot>",
 	num_param = 2,
 	description = S("Drop items in front of the bot.\n"..
-		"<slot> is the inventory slot (1..8) or 0 for any one"),
+		"<slot> is the bot inventory slot (1..8) or 0 for any one"),
 	check = function(num, slot)
 		num = tonumber(num) or 1
-		if num < 1 or num > 99 then 
-			return false 
+		if num < 1 or num > 99 then
+			return false
 		end
 		slot = tonumber(slot) or 0
-		if slot < 0 or slot > 8 then 
-			return false 
+		if slot < 0 or slot > 8 then
+			return false
 		end
 		return true
 	end,
@@ -256,15 +302,15 @@ end
 -- def is a table with following data:
 --	{
 --		put = {
---			allow_inventory_put = func(pos, stack, player_name), 
+--			allow_inventory_put = func(pos, stack, player_name),
 --			listname = "src",
 --		},
 --		take = {
 --			allow_inventory_take = func(pos, stack, player_name),
 --			listname = "dst",
-		
+
 --		fuel = {
---			allow_inventory_put = func(pos, stack, player_name), 
+--			allow_inventory_put = func(pos, stack, player_name),
 --			listname = "fuel",
 --		},
 --	}
diff --git a/signs_bot/cmd_move.lua b/signs_bot/cmd_move.lua
index 76cae4d..12c908a 100644
--- a/signs_bot/cmd_move.lua
+++ b/signs_bot/cmd_move.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Bot move commands
 
 ]]--
@@ -24,17 +24,17 @@ local function node_and_pos(pos)
 end
 
 -- Positions to check:
---   5 6  
---  [R]1  
+--   5 6
+--  [R]1
 --   3 2
---   4 
+--   4
 function signs_bot.move_robot(mem)
 	local param2 = mem.robot_param2
 	local pos = mem.robot_pos
 	local node1, pos1 = node_and_pos(lib.next_pos(pos, param2))
 	local node2, pos2 = node_and_pos({x=pos1.x, y=pos1.y-1, z=pos1.z})
 	local node3, pos3 = node_and_pos({x=pos.x, y=pos.y-1, z=pos.z})
-	
+
 	--
 	-- One step forward (pos1)
 	--
@@ -57,17 +57,17 @@ function signs_bot.move_robot(mem)
 		minetest.sound_play('signs_bot_step', {pos = pos1})
 		return pos1
 	end
-	
+
 	--
 	-- One step up (pos5)
 	--
 	local node6, pos6 = node_and_pos({x=pos1.x, y=pos1.y+1, z=pos1.z})
 	if lib.check_pos(pos6, node6, node1, param2) then
 		local node5, pos5 = node_and_pos({x=pos.x, y=pos.y+1, z=pos.z})
-		if node5.name == "air" then 
-			if node3.name == "signs_bot:robot_leg" then 
+		if node5.name == "air" then
+			if node3.name == "signs_bot:robot_leg" then
 				return nil
-			elseif node3.name == "signs_bot:robot_foot" then 
+			elseif node3.name == "signs_bot:robot_foot" then
 				minetest.swap_node(pos3, {name="signs_bot:robot_leg"})
 			else
 				minetest.swap_node(pos, {name="signs_bot:robot_foot"})
@@ -77,12 +77,12 @@ function signs_bot.move_robot(mem)
 			return pos5
 		end
 	end
-	
+
 	--
 	-- One step down I (pos3)
 	--
 	local node4, pos4 = node_and_pos({x=pos.x, y=pos.y-2, z=pos.z})
-	if lib.check_pos(pos3, node3, node4, param2) then  -- 
+	if lib.check_pos(pos3, node3, node4, param2) then  --
 		minetest.remove_node(pos)
 		minetest.set_node(pos3, {name="signs_bot:robot", param2=param2})
 		minetest.sound_play('signs_bot_step', {pos = pos3})
@@ -98,8 +98,8 @@ function signs_bot.move_robot(mem)
 		minetest.sound_play('signs_bot_step', {pos = pos3})
 		return pos3
 	end
-end	
-	
+end
+
 
 local function backward_robot(mem)
 	local param2 = mem.robot_param2
@@ -109,7 +109,7 @@ local function backward_robot(mem)
 	local node3, pos3 = node_and_pos({x=pos.x, y=pos.y-1, z=pos.z})
 	local node4, pos4 = node_and_pos({x=pos.x, y=pos.y-2, z=pos.z})
 	local new_pos = nil
-	
+
 	if lib.check_pos(pos1, node1, node2, param2) then
 		if node3.name == "signs_bot:robot_foot" or node3.name == "signs_bot:robot_leg" then
 			minetest.remove_node(pos3)
@@ -123,7 +123,7 @@ local function backward_robot(mem)
 		mem.stored_node = node1
 		return pos1
 	end
-end	
+end
 
 signs_bot.register_botcommand("backward", {
 	mod = "move",
@@ -148,7 +148,7 @@ local function turn_robot(pos, param2, dir)
 	minetest.swap_node(pos, {name="signs_bot:robot", param2=param2})
 	minetest.sound_play('signs_bot_step', {pos = pos, gain = 0.6})
 	return param2
-end	
+end
 
 signs_bot.register_botcommand("turn_left", {
 	mod = "move",
@@ -187,15 +187,15 @@ signs_bot.register_botcommand("turn_around", {
 
 -- Positions to check:
 --   1
---  [R]  
+--  [R]
 --   2
 local function robot_up(pos, param2)
 	local node1, pos1 = node_and_pos({x=pos.x, y=pos.y+1, z=pos.z})
 	local node2, pos2 = node_and_pos({x=pos.x, y=pos.y-1, z=pos.z})
 	if lib.check_pos(pos1, node1, node2, param2) then
-		if node2.name == "signs_bot:robot_leg" then 
+		if node2.name == "signs_bot:robot_leg" then
 			return nil
-		elseif node2.name == "signs_bot:robot_foot" then 
+		elseif node2.name == "signs_bot:robot_foot" then
 			minetest.swap_node(pos, {name="signs_bot:robot_leg"})
 		else
 			minetest.swap_node(pos, {name="signs_bot:robot_foot"})
@@ -205,7 +205,7 @@ local function robot_up(pos, param2)
 		return pos1
 	end
 	return nil
-end	
+end
 
 signs_bot.register_botcommand("move_up", {
 	mod = "move",
@@ -222,7 +222,7 @@ signs_bot.register_botcommand("move_up", {
 })
 
 -- Positions to check:
---  [R]  
+--  [R]
 --   1
 --   2
 --   3
@@ -230,7 +230,7 @@ local function robot_down(pos, param2)
 	local node1, pos1 = node_and_pos({x=pos.x, y=pos.y-1, z=pos.z})
 	local node2, pos2 = node_and_pos({x=pos.x, y=pos.y-2, z=pos.z})
 	local node3, pos3 = node_and_pos({x=pos.x, y=pos.y-3, z=pos.z})
-	if lib.check_pos(pos1, node1, node2, param2) 
+	if lib.check_pos(pos1, node1, node2, param2)
 	or (node1.name == "air" and lib.check_pos(pos2, node2, node3, param2))
 	or (node1.name == "signs_bot:robot_leg" or node1.name == "signs_bot:robot_foot") then
 		minetest.remove_node(pos)
@@ -239,7 +239,7 @@ local function robot_down(pos, param2)
 		return pos1
 	end
 	return nil
-end	
+end
 
 signs_bot.register_botcommand("move_down", {
 	mod = "move",
@@ -255,6 +255,36 @@ signs_bot.register_botcommand("move_down", {
 	end,
 })
 
+signs_bot.register_botcommand("fall_down", {
+	mod = "move",
+	params = "",
+	num_param = 0,
+	description = S("Fall into a hole/chasm (up to 10 blocks)"),
+	cmnd = function(base_pos, mem)
+		if not mem.bot_falling then
+			local pos1 = {x=mem.robot_pos.x, y=mem.robot_pos.y-1, z=mem.robot_pos.z}
+			local pos2 = {x=mem.robot_pos.x, y=mem.robot_pos.y-10, z=mem.robot_pos.z}
+			local sts, pos3 = minetest.line_of_sight(pos1, pos2)
+			if sts == false then
+				sts, _ = minetest.spawn_falling_node(mem.robot_pos)
+				if sts then
+					mem.bot_falling = 2
+					mem.robot_pos = {x=pos3.x, y=pos3.y+1, z=pos3.z}
+					return signs_bot.BUSY
+				end
+			end
+			return signs_bot.ERROR, "Too deep"
+		else
+			mem.bot_falling = mem.bot_falling - 1
+			if mem.bot_falling <= 0 then
+				mem.bot_falling = nil
+				return signs_bot.DONE
+			end
+			return signs_bot.BUSY
+		end
+	end,
+})
+
 signs_bot.register_botcommand("pause", {
 	mod = "move",
 	params = "<sec>",
@@ -305,5 +335,5 @@ signs_bot.register_botcommand("turn_off", {
 	end,
 })
 
-	
-	
+
+
diff --git a/signs_bot/cmd_pattern.lua b/signs_bot/cmd_pattern.lua
index 2fef06b..a7a18b3 100644
--- a/signs_bot/cmd_pattern.lua
+++ b/signs_bot/cmd_pattern.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Bot cloning/pattern commands, signs, and nodes
 
 ]]--
@@ -50,7 +50,7 @@ for _,row in ipairs(Param2Matrix) do
 	end
 end
 
-local function param2_conversion(node, offs) 
+local function param2_conversion(node, offs)
 	local ndef = minetest.registered_nodes[node.name]
 	if not ndef or not ndef.paramtype2 then	return end
 	if ndef.paramtype2 == "facedir" then
@@ -59,7 +59,7 @@ local function param2_conversion(node, offs)
 		node.param2 = tWallmountedRot[(node.param2 + offs - 2) % 4]
 	end
 end
-	
+
 --
 -- Inventory functions
 --
@@ -94,11 +94,11 @@ local function pattern_copy(base_pos, mem)
 	local src_pos = mem.src_pos_tbl[mem.steps]
 	local dst_pos = mem.dst_pos_tbl[mem.steps]
 	mem.steps = mem.steps + 1
-	
+
 	if lib.not_protected(base_pos, dst_pos) then
 		local src_node = tubelib2.get_node_lvm(src_pos)
 		src_node.name = inv_get_item(base_pos, src_node.name)
-	
+
 		local dst_node = tubelib2.get_node_lvm(dst_pos)
 		inv_put_item(base_pos, mem, dst_node.name)
 		param2_conversion(src_node, mem.dir_offs)
@@ -106,7 +106,7 @@ local function pattern_copy(base_pos, mem)
 	end
 end
 
-			
+
 signs_bot.register_botcommand("pattern", {
 	mod = "copy",
 	params = "",
@@ -171,9 +171,9 @@ minetest.register_node("signs_bot:missing", {
 })
 
 signs_bot.register_sign({
-	name = "pattern", 
-	description = S('Sign "pattern"'), 
-	commands = "pattern\nturn_around", 
+	name = "pattern",
+	description = S('Sign "pattern"'),
+	commands = "pattern\nturn_around",
 	image = "signs_bot_sign_pattern.png",
 })
 
@@ -200,9 +200,9 @@ place_sign 1
 turn_around]]
 
 signs_bot.register_sign({
-	name = "copy3x3x3", 
-	description = S('Sign "copy 3x3x3"'), 
-	commands = CMND, 
+	name = "copy3x3x3",
+	description = S('Sign "copy 3x3x3"'),
+	commands = CMND,
 	image = "signs_bot_sign_copy3x3x3.png",
 })
 
@@ -222,10 +222,10 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:pattern",
 			text = table.concat({
 				S("Used to make a copy of a 3x3x3 cube."),
-				S("Place the sign in front of the pattern to be copied."), 
+				S("Place the sign in front of the pattern to be copied."),
 				S("Use the copy sign to make the copy of this pattern on a different location."),
 				S("The bot must first reach the pattern sign, then the copy sign."),
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
@@ -237,9 +237,9 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:copy3x3x3",
 			text = table.concat({
 				S("Used to make a copy of a 3x3x3 cube."),
-				S("Place the sign in front of the location, where the copy should be made."), 
+				S("Place the sign in front of the location, where the copy should be made."),
 				S("Use the pattern sign to mark the pattern."),
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/cmd_place.lua b/signs_bot/cmd_place.lua
index 920d49e..ae53b6b 100644
--- a/signs_bot/cmd_place.lua
+++ b/signs_bot/cmd_place.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Bot place/remove commands
 
 ]]--
@@ -56,8 +56,8 @@ local function place_item(base_pos, robot_pos, param2, slot, route, level)
 		local taken = signs_bot.bot_inv_take_item(base_pos, slot, 1)
 		if taken then
 			local name = taken:get_name()
-			if name == "default:torch" then  
-				name = "signs_bot:torch" 
+			if name == "default:torch" then
+				name = "signs_bot:torch"
 			end
 			local def = minetest.registered_nodes[name]
 			if not def then return end
@@ -83,8 +83,8 @@ signs_bot.register_botcommand("place_front", {
 		"<lvl> is one of: -1   0   +1"),
 	check = function(slot, lvl)
 		slot = tonumber(slot) or 0
-		if not slot or slot < 0 or slot > 8 then 
-			return false 
+		if not slot or slot < 0 or slot > 8 then
+			return false
 		end
 		return tValidLevels[lvl] ~= nil
 	end,
@@ -94,7 +94,7 @@ signs_bot.register_botcommand("place_front", {
 		return place_item(base_pos, mem.robot_pos, mem.robot_param2, slot, {0}, level)
 	end,
 })
-	
+
 signs_bot.register_botcommand("place_left", {
 	mod = "place",
 	params = "<slot> <lvl>",
@@ -104,8 +104,8 @@ signs_bot.register_botcommand("place_left", {
 		"<lvl> is one of: -1   0   +1"),
 	check = function(slot, lvl)
 		slot = tonumber(slot) or 0
-		if not slot or slot < 0 or slot > 8 then 
-			return false 
+		if not slot or slot < 0 or slot > 8 then
+			return false
 		end
 		return tValidLevels[lvl] ~= nil
 	end,
@@ -115,7 +115,7 @@ signs_bot.register_botcommand("place_left", {
 		return place_item(base_pos, mem.robot_pos, mem.robot_param2, slot, {3,0}, level)
 	end,
 })
-	
+
 signs_bot.register_botcommand("place_right", {
 	mod = "place",
 	params = "<slot> <lvl>",
@@ -125,8 +125,8 @@ signs_bot.register_botcommand("place_right", {
 		"<lvl> is one of: -1   0   +1"),
 	check = function(slot, lvl)
 		slot = tonumber(slot) or 0
-		if not slot or slot < 0 or slot > 8 then 
-			return false 
+		if not slot or slot < 0 or slot > 8 then
+			return false
 		end
 		return tValidLevels[lvl] ~= nil
 	end,
@@ -232,8 +232,8 @@ signs_bot.register_botcommand("dig_front", {
 		"<lvl> is one of: -1   0   +1"),
 	check = function(slot, lvl)
 		slot = tonumber(slot) or 0
-		if not slot or slot < 0 or slot > 8 then 
-			return false 
+		if not slot or slot < 0 or slot > 8 then
+			return false
 		end
 		return tValidLevels[lvl] ~= nil
 	end,
@@ -254,8 +254,8 @@ signs_bot.register_botcommand("dig_left", {
 		"<lvl> is one of: -1   0   +1"),
 	check = function(slot, lvl)
 		slot = tonumber(slot) or 0
-		if not slot or slot < 0 or slot > 8 then 
-			return false 
+		if not slot or slot < 0 or slot > 8 then
+			return false
 		end
 		return tValidLevels[lvl] ~= nil
 	end,
@@ -276,8 +276,8 @@ signs_bot.register_botcommand("dig_right", {
 		"<lvl> is one of: -1   0   +1"),
 	check = function(slot, lvl)
 		slot = tonumber(slot) or 0
-		if not slot or slot < 0 or slot > 8 then 
-			return false 
+		if not slot or slot < 0 or slot > 8 then
+			return false
 		end
 		return tValidLevels[lvl] ~= nil
 	end,
@@ -375,7 +375,7 @@ end
 
 signs_bot.register_botcommand("rotate_item", {
 	mod = "place",
-	params = "<lvl> <steps>",	
+	params = "<lvl> <steps>",
 	num_param = 2,
 	description = S("Rotate the block in front of the robot\n"..
 		"<lvl> is one of:  -1   0   +1\n"..
@@ -393,7 +393,7 @@ signs_bot.register_botcommand("rotate_item", {
 		return rotate_item(base_pos, mem.robot_pos, mem.robot_param2, {0}, level, steps)
 	end,
 })
-	
+
 -- Simplified torch which can be placed w/o a fake player
 minetest.register_node("signs_bot:torch", {
 	description = S("Bot torch"),
@@ -412,12 +412,12 @@ minetest.register_node("signs_bot:torch", {
 		connect_back = {{-1/16, -1/16, -1/16, 1/16, 1/16, 8/16}},
 		connect_right = {{-1/16, -1/16, -1/16, 8/16, 1/16, 1/16}},
 	},
-	tiles = { 
+	tiles = {
 		-- up, down, right, left, back, front
-		"signs_bot_torch_top.png", 
-		"signs_bot_torch_bottom.png", 
+		"signs_bot_torch_top.png",
+		"signs_bot_torch_bottom.png",
 		{
-			image = "signs_bot_torch_animated.png", 
+			image = "signs_bot_torch_animated.png",
 			backface_culling = false,
 			animation = {
 				type = "vertical_frames",
@@ -426,10 +426,10 @@ minetest.register_node("signs_bot:torch", {
 				length = 4.0,
 			},
 		},
-		
+
 	},
 	connects_to = {
-		"group:pane", "group:stone", "group:glass", "group:wood", "group:tree", 
+		"group:pane", "group:stone", "group:glass", "group:wood", "group:tree",
 		"group:bakedclay", "group:soil"},
 	paramtype = "light",
 	paramtype2 = "facedir",
diff --git a/signs_bot/cmd_sign.lua b/signs_bot/cmd_sign.lua
index 8917dab..def1fca 100644
--- a/signs_bot/cmd_sign.lua
+++ b/signs_bot/cmd_sign.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Bot sign commands and nodes
 
 ]]--
@@ -24,7 +24,7 @@ local sCmnds = ""
 local lCmnds = {}
 local tCmndIdx = {}
 
-minetest.after(2, function() 
+minetest.after(2, function()
 	for idx,cmnd in ipairs(signs_bot.get_commands()) do
 		cmnd = minetest.formspec_escape(cmnd)
 		lCmnds[#lCmnds+1] = cmnd
@@ -75,7 +75,7 @@ local function add_arrow(text, line_num)
 		end
 	end
 	return table.concat(tbl, "\n")
-end	
+end
 
 local function check_syntax(pos, meta, text)
 	local res,err_msg, line_num = signs_bot.check_commands(pos, text)
@@ -92,9 +92,9 @@ local function append_line(pos, meta, line)
 	meta:set_string("signs_bot_cmnd", text)
 	meta:set_int("err_code", 1) -- zero means OK
 	meta:set_string("err_msg", S("please check the added line(s)"))
-end	
-	
-local function check_and_store(pos, meta, fields)	
+end
+
+local function check_and_store(pos, meta, fields)
 	meta:set_string("sign_name", fields.name)
 	meta:set_string("signs_bot_cmnd", fields.cmnd)
 	check_syntax(pos, meta, fields.cmnd)
@@ -138,7 +138,7 @@ minetest.register_node("signs_bot:sign_cmnd", {
 		nmeta:set_string("infotext", nmeta:get_string("sign_name"))
 		nmeta:set_string("formspec", formspec1(nmeta))
 	end,
-	
+
 	on_receive_fields = function(pos, formname, fields, player)
 		if minetest.is_protected(pos, player:get_player_name()) then
 			return
@@ -169,7 +169,7 @@ minetest.register_node("signs_bot:sign_cmnd", {
 			end
 		end
 	end,
-	
+
 	after_dig_node = lib.after_dig_sign_node,
 	paramtype = "light",
 	use_texture_alpha = signs_bot.CLIP,
@@ -191,7 +191,7 @@ local function get_inv_sign(base_pos, slot)
 		return taken
 	end
 end
-			
+
 -- Put one sign into the robot signs inventory
 local function put_inv_sign(base_pos, slot, item)
 	local inv = minetest.get_inventory({type="node", pos=base_pos})
@@ -285,7 +285,7 @@ local function dig_sign(base_pos, robot_pos, param2, slot)
 		meta:set_string("cmnd", cmnd)
 		meta:set_int("err_code", err_code)
 		minetest.remove_node(pos1)
-		if not put_inv_sign(base_pos, slot, sign) then	
+		if not put_inv_sign(base_pos, slot, sign) then
 			signs_bot.lib.drop_items(robot_pos, sign)
 			return signs_bot.ERROR, S("Error: Signs inventory slot is occupied")
 		end
@@ -332,7 +332,7 @@ end
 
 signs_bot.register_botcommand("trash_sign", {
 	mod = "sign",
-	params = "<slot>",	
+	params = "<slot>",
 	num_param = 1,
 	description = S("Dig the sign in front of the robot\n"..
 		"and add the cleared sign to\nthe item iventory.\n"..
@@ -346,7 +346,7 @@ signs_bot.register_botcommand("trash_sign", {
 		return trash_sign(base_pos, mem.robot_pos, mem.robot_param2, slot)
 	end,
 })
-	
+
 
 minetest.register_craft({
 	output = "signs_bot:sign_cmnd 4",
@@ -364,10 +364,10 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:sign_cmnd",
 			text = table.concat({
 				S("The 'command' sign can be programmed by the player."),
-				S("Place the sign in front of you and use the node menu to program your sequence of bot commands."), 
+				S("Place the sign in front of you and use the node menu to program your sequence of bot commands."),
 				S("The menu has an edit field for your commands and a help page with all available commands."),
 				S("The help page has a copy button to simplify the programming."),
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/cmd_soup.lua b/signs_bot/cmd_soup.lua
index 48054c3..b7f5a7a 100644
--- a/signs_bot/cmd_soup.lua
+++ b/signs_bot/cmd_soup.lua
@@ -8,7 +8,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Bot soup cooking commands
 
 	Allows bot to use pot (xdecor:cauldron) to cook a vegetable soup
diff --git a/signs_bot/cmd_trees.lua b/signs_bot/cmd_trees.lua
index 3e6208b..057d278 100644
--- a/signs_bot/cmd_trees.lua
+++ b/signs_bot/cmd_trees.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Bot tree cutting signs
 ]]--
 
@@ -62,7 +62,7 @@ turn_around]]
 
 local HELP = table.concat({
 	S("Used to harvest an aspen or pine tree trunk"),
-	S("- Place the sign in front of the tree."), 
+	S("- Place the sign in front of the tree."),
 	S("- Place a chest to the right of the sign."),
 	S("- Put a dirt stack (10 items min.) into the chest."),
         S("- Preconfigure slot 1 of the bot inventory with dirt"),
diff --git a/signs_bot/commands.lua b/signs_bot/commands.lua
index 542c790..5a3b749 100644
--- a/signs_bot/commands.lua
+++ b/signs_bot/commands.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Signs Bot: Robot command interpreter
 
 ]]--
@@ -30,6 +30,9 @@ signs_bot.NEW = ci.NEW
 signs_bot.ERROR = ci.ERROR
 signs_bot.TURN_OFF = ci.TURN_OFF
 
+-- API functions
+signs_bot.check_label = ci.check_label
+
 local tCommands = {}
 local SortedKeys = {}
 local SortedMods = {}
@@ -79,7 +82,7 @@ function signs_bot.get_commands()
 		end
 	end
 	return tbl
-end	
+end
 
 function signs_bot.get_help_text(cmnd)
 	if cmnd then
@@ -90,8 +93,8 @@ function signs_bot.get_help_text(cmnd)
 		end
 	end
 	return S("unknown command")
-end	
-	
+end
+
 function signs_bot.check_commands(pos, text)
 	return ci.check_script(text)
 end
@@ -107,7 +110,7 @@ local function check_sign(pos, mem)
 		if meta:get_int("err_code") ~= 0 then -- code not valid?
 			return false
 		end
-		
+
 		local node = tubelib2.get_node_lvm(pos)
 		-- correct sign direction?
 		if mem.robot_param2 == node.param2 then
@@ -187,7 +190,7 @@ function signs_bot.run_next_command(base_pos, mem)
 		signs_bot.stop_robot(base_pos, mem)
 		return false
 	end
-	if not power_consumption(mem) then 
+	if not power_consumption(mem) then
 		signs_bot.stop_robot(base_pos, mem)
 		mem.bot_state = "nopower"
 		return bot_error(base_pos, mem, "No power")
@@ -201,33 +204,33 @@ end
 
 signs_bot.register_botcommand("repeat", {
 	mod = "core",
-	params = "<num>",	
+	params = "<num>",
 	description = S("start of a 'repeat..end' block"),
-})	
+})
 
 signs_bot.register_botcommand("end", {
 	mod = "core",
-	params = "",	
+	params = "",
 	description = S("end command of a 'repeat..end' block"),
-})	
+})
 
 signs_bot.register_botcommand("call", {
 	mod = "core",
-	params = "<label>",	
+	params = "<label>",
 	description = S("call a subroutine (with 'return' statement)"),
-})	
+})
 
 signs_bot.register_botcommand("return", {
 	mod = "core",
-	params = "",	
+	params = "",
 	description = S("return from a subroutine"),
-})	
+})
 
 signs_bot.register_botcommand("jump", {
 	mod = "core",
-	params = "<label>",	
+	params = "<label>",
 	description = S("jump to a label"),
-})	
+})
 
 local function move(mem, any_sensor)
 	local new_pos = signs_bot.move_robot(mem)
@@ -244,7 +247,7 @@ end
 
 signs_bot.register_botcommand("move", {
 	mod = "move",
-	params = "<steps>",	
+	params = "<steps>",
 	num_param = 1,
 	description = S([[Move the robot 1..999 steps forward
 without paying attention to any signs.
@@ -268,7 +271,7 @@ signs_bot.register_botcommand("cond_move", {
 	num_param = 0,
 	description = S([[Walk until a sign or obstacle is
 reached. Then continue with the next command.
-When a sign has been reached, 
+When a sign has been reached,
 the current program is ended
 and the bot executes the
 new program from the sign]]),
@@ -289,7 +292,7 @@ signs_bot.register_botcommand("print", {
 	params = "<text>",
 	num_param = 1,
 	description = S([[Print given text as chat message.
-For two or more words, use the '*' character 
+For two or more words, use the '*' character
 instead of spaces, like "Hello*world"]]),
 	check = function(text)
 		return text ~= ""
diff --git a/signs_bot/compost.lua b/signs_bot/compost.lua
index 0a50d6f..5cd198d 100644
--- a/signs_bot/compost.lua
+++ b/signs_bot/compost.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Signs Bot: Commands for the compost mod
 
 ]]--
@@ -25,14 +25,14 @@ local function additem(mem, stack)
 	if ndef.minecart_hopper_additem then
 		return ndef.minecart_hopper_additem(pos, stack)
 	end
-	
+
 	pos = {x = pos.x, y = pos.y - 1, z = pos.z}
 	node = minetest.get_node(pos)
 	ndef = minetest.registered_nodes[node.name]
 	if ndef and ndef.minecart_hopper_additem then
 		return ndef.minecart_hopper_additem(pos, stack)
 	end
-	
+
 	return stack
 end
 
@@ -43,7 +43,7 @@ local function takeitem(mem)
 	if ndef.minecart_hopper_takeitem then
 		return ndef.minecart_hopper_takeitem(pos, 1)
 	end
-	
+
 	pos = {x = pos.x, y = pos.y - 1, z = pos.z}
 	node = minetest.get_node(pos)
 	ndef = minetest.registered_nodes[node.name]
diff --git a/signs_bot/crop_sensor.lua b/signs_bot/crop_sensor.lua
index b009aca..7322d53 100644
--- a/signs_bot/crop_sensor.lua
+++ b/signs_bot/crop_sensor.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Crop Sensor
 
 ]]--
@@ -25,7 +25,7 @@ local CYCLE_TIME = 4
 
 local function update_infotext(pos, dest_pos, dest_idx)
 	M(pos):set_string("infotext", S("Crop Sensor: Connected with").." "..P2S(dest_pos).." / "..dest_idx)
-end	
+end
 
 local function swap_node(pos, name)
 	local node = minetest.get_node(pos)
@@ -39,7 +39,7 @@ local function swap_node(pos, name)
 	end
 	return false
 end
-	
+
 local function node_timer(pos)
 	local pos1 = lib.next_pos(pos, M(pos):get_int("param2"))
 	local node = minetest.get_node_or_nil(pos1)
@@ -72,7 +72,7 @@ minetest.register_node("signs_bot:crop_sensor", {
 		"signs_bot_sensor1.png^[transformFXR90",
 		"signs_bot_sensor1.png^[transformFXR180",
 	},
-	
+
 	after_place_node = function(pos, placer)
 		local meta = M(pos)
 		meta:set_string("infotext", S("Crop Sensor: Not connected"))
@@ -80,7 +80,7 @@ minetest.register_node("signs_bot:crop_sensor", {
 		local node = minetest.get_node(pos)
 		meta:set_int("param2", (node.param2 + 2) % 4)
 	end,
-	
+
 	on_timer = node_timer,
 	update_infotext = update_infotext,
 	on_rotate = screwdriver.disallow,
@@ -111,7 +111,7 @@ minetest.register_node("signs_bot:crop_sensor_on", {
 		"signs_bot_sensor1.png^[transformFXR90",
 		"signs_bot_sensor1.png^[transformFXR180",
 	},
-			
+
 	on_timer = node_timer,
 	update_infotext = update_infotext,
 	on_rotate = screwdriver.disallow,
@@ -155,10 +155,10 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:crop_sensor",
 			text = table.concat({
 				S("The Crop Sensor sends cyclical signals when, for example, wheat is fully grown."),
-				S("The sensor range is one node/meter."), 
+				S("The sensor range is one node/meter."),
 				S("The sensor has an active side (red) that must point to the crop/field."),
 
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/delayer.lua b/signs_bot/delayer.lua
index 7d39c29..337b004 100644
--- a/signs_bot/delayer.lua
+++ b/signs_bot/delayer.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Signal Delayer.
 	Signals are forwarded delayed. Subsequent signals are queued.
 ]]--
@@ -24,7 +24,7 @@ local CYCLE_TIME = 2
 
 local function update_infotext(pos, dest_pos, cmnd)
 	M(pos):set_string("infotext", S("Signal Delayer: Connected with").." "..P2S(dest_pos).." / "..cmnd)
-end	
+end
 
 local function infotext(pos)
 	local meta = M(pos)
@@ -52,7 +52,7 @@ local function signs_bot_get_signal(pos, node)
 end
 
 -- switch to normal or loaded texture
-local function turn_off(pos)	
+local function turn_off(pos)
 	local mem = tubelib2.get_mem(pos)
 	local node = minetest.get_node(pos)
 	if mem.queue > 0 then
@@ -64,7 +64,7 @@ local function turn_off(pos)
 end
 
 -- switch to loaded texture
-local function loaded(pos)	
+local function loaded(pos)
 	local node = minetest.get_node(pos)
 	if node.name == "signs_bot:delayer" or node.name == "signs_bot:delayer_on" then
 		node.name = "signs_bot:delayer_loaded"
@@ -105,10 +105,10 @@ local function signs_bot_on_signal(pos, node, signal)
 	local meta = M(pos)
 	local mem = tubelib2.get_mem(pos)
 	mem.queue = mem.queue or 0
-	
+
 	--print("signs_bot_on_signal", signal, meta:get_int("time"))
 	if signal ~= "do" or  meta:get_int("time") == 0 then return end
-		
+
 	if mem.queue <= 0 then
 		mem.queue = 1
 		mem.time = meta:get_int("time")
@@ -152,7 +152,7 @@ minetest.register_node("signs_bot:delayer", {
 		"signs_bot_sensor2.png^signs_bot_delayer.png",
 		"signs_bot_sensor2.png",
 	},
-	
+
 	after_place_node = function(pos, placer)
 		local meta = M(pos)
 		local mem = tubelib2.init_mem(pos)
@@ -161,7 +161,7 @@ minetest.register_node("signs_bot:delayer", {
 		infotext(pos)
 		meta:set_string("formspec", formspec(meta))
 	end,
-	
+
 	signs_bot_get_signal = signs_bot_get_signal,
 	signs_bot_on_signal = signs_bot_on_signal,
 	on_receive_fields = on_receive_fields,
@@ -265,9 +265,9 @@ if minetest.get_modpath("doc") then
 		data = {
 			item = "signs_bot:delayer",
 			text = table.concat({
-				S("Signals are forwarded delayed. Subsequent signals are queued."), 
+				S("Signals are forwarded delayed. Subsequent signals are queued."),
 				S("The delay time can be configured."),
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/doc.lua b/signs_bot/doc.lua
index a929780..342a6c5 100644
--- a/signs_bot/doc.lua
+++ b/signs_bot/doc.lua
@@ -7,7 +7,7 @@
 
 	GPLv3
 	See LICENSE.txt for more information
-	
+
 	Signs Bot: Bot Flap
 
 ]]--
@@ -145,7 +145,7 @@ doc.add_category("signs_bot",
 	name = S("Signs Bot"),
 	description = S("A robot controlled by signs, used for automated work"),
 	sorting = "custom",
-	sorting_data = {"start", "control", "sensor_doc", "tool", 
+	sorting_data = {"start", "control", "sensor_doc", "tool",
 		"box", "bot_flap", "duplicator",
 		"bot_sensor", "cart_sensor", "node_sensor", "crop_sensor", "chest", "timer",
 		"changer", "sensor_extender",
diff --git a/signs_bot/duplicator.lua b/signs_bot/duplicator.lua
index 34a5a37..e2a173c 100644
--- a/signs_bot/duplicator.lua
+++ b/signs_bot/duplicator.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Signs duplicator
 
 ]]--
@@ -46,7 +46,7 @@ local function allow_metadata_inventory_put(pos, listname, index, stack, player)
 	if listname == "outp" then
 		return 0
 	end
-	if minetest.get_item_group(stack:get_name(), "sign_bot_sign") ~= 1 
+	if minetest.get_item_group(stack:get_name(), "sign_bot_sign") ~= 1
 			and stack:get_name() ~= "default:book_written" then
 		return 0
 	end
@@ -66,7 +66,7 @@ end
 local function get_template_data(stack)
 	local name = stack:get_name()
 	local data = stack:get_meta():to_table().fields
-	
+
 	if name == "default:sign_user" or name == "signs_bot:sign_cmnd" then
 		return data.description, data.cmnd
 	end
@@ -92,7 +92,7 @@ local function move_to_output(pos)
 	local outp_stack = inv:get_stack("outp", 1)
 	local dest_item = get_dest_item(inp_stack)
 	local descr, cmnd = get_template_data(temp_stack)
-	
+
 	if dest_item and descr then
 		dest_item:set_count(inp_stack:get_count())
 		local meta = dest_item:get_meta()
@@ -131,11 +131,11 @@ minetest.register_node("signs_bot:duplicator", {
 		inv:set_size('outp', 1)
 		meta:set_string("formspec", formspec)
 	end,
-	
+
 	allow_metadata_inventory_put = allow_metadata_inventory_put,
 	allow_metadata_inventory_take = allow_metadata_inventory_take,
 	on_metadata_inventory_put = on_metadata_inventory_put,
-	
+
 	can_dig = function(pos, player)
 		if minetest.is_protected(pos, player:get_player_name()) then
 			return false
@@ -144,7 +144,7 @@ minetest.register_node("signs_bot:duplicator", {
 		local inv = meta:get_inventory()
 		return inv:is_empty("inp") and inv:is_empty("temp") and inv:is_empty("outp")
 	end,
-	
+
 	paramtype2 = "facedir",
 	is_ground_content = false,
 	groups = {cracky = 1},
@@ -200,7 +200,7 @@ minetest.register_node("signs_bot:sign_user", {
 		local text = nmeta:get_string("sign_name").."\n"..imeta:get_string("cmnd")
 		nmeta:set_string("formspec", formspec_user(text))
 	end,
-	
+
 	after_dig_node = lib.after_dig_sign_node,
 	drop = "",
 	on_rotate = screwdriver.disallow,
@@ -212,9 +212,9 @@ minetest.register_node("signs_bot:sign_user", {
 })
 
 signs_bot.register_sign({
-	name = "sign_blank", 
-	description = S('Sign "blank"'), 
-	commands = "", 
+	name = "sign_blank",
+	description = S('Sign "blank"'),
+	commands = "",
 	image = "signs_bot_sign_blank.png",
 })
 
@@ -234,13 +234,13 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:duplicator",
 			text = table.concat({
 				S("The Duplicator can be used to make copies of signs."),
-				S("1. Put one 'cmnd' sign to be used as template into the 'Template' inventory"), 
+				S("1. Put one 'cmnd' sign to be used as template into the 'Template' inventory"),
 				S("2. Add one or several 'blank signs' to the 'Input' inventory."),
 				S("3. Take the copies from the 'Output' inventory."),
 				"",
 				S("Written books [default:book_written] can alternatively be used as template"),
 				S("Already written signs can be used as input, too."),
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
@@ -250,7 +250,7 @@ if minetest.get_modpath("doc") then
 		name = S('Sign "blank"'),
 		data = {
 			item = "signs_bot:sign_blank",
-			text = S("Needed as input for the Duplicator.")		
+			text = S("Needed as input for the Duplicator.")
 		},
 	})
 end
diff --git a/signs_bot/extender.lua b/signs_bot/extender.lua
index 61c3063..fb4d64e 100644
--- a/signs_bot/extender.lua
+++ b/signs_bot/extender.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Sensor Extender
 	(passive node, the Sensor detects the extender)
 ]]--
@@ -21,7 +21,7 @@ local S = signs_bot.S
 
 local function update_infotext(pos, dest_pos, cmnd)
 	M(pos):set_string("infotext", S("Sensor Extender: Connected with").." "..P2S(dest_pos).." / "..cmnd)
-end	
+end
 
 minetest.register_node("signs_bot:sensor_extender", {
 	description = S("Sensor Extender"),
@@ -47,12 +47,12 @@ minetest.register_node("signs_bot:sensor_extender", {
 		"signs_bot_extender_side.png",
 		"signs_bot_extender_side.png",
 	},
-	
+
 	after_place_node = function(pos, placer)
 		local meta = M(pos)
 		meta:set_string("infotext", S("Sensor Extender: Not connected"))
 	end,
-	
+
 	update_infotext = update_infotext,
 	on_rotate = screwdriver.disallow,
 	paramtype = "light",
@@ -87,21 +87,21 @@ minetest.register_node("signs_bot:sensor_extender_on", {
 		"signs_bot_extender_side.png",
 		"signs_bot_extender_side.png",
 	},
-	
+
 	-- Called from the Sensor beside
 	after_place_node = function(pos)
 		minetest.get_node_timer(pos):start(1)
 		signs_bot.send_signal(pos)
 		signs_bot.lib.activate_extender_nodes(pos)
 	end,
-		
+
 	on_timer = function(pos)
 		local node = tubelib2.get_node_lvm(pos)
 		node.name = "signs_bot:sensor_extender"
 		minetest.swap_node(pos, node)
 		return false
 	end,
-	
+
 	update_infotext = update_infotext,
 	on_rotate = screwdriver.disallow,
 	paramtype = "light",
@@ -130,9 +130,9 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:sensor_extender",
 			text = table.concat({
 				S("With the Sensor Extender, sensor signals can be sent to more than one actuator."),
-				S("Place one or more extender nearby the sensor and connect each extender"), 
-				S("with one further actuator by means of the Connection Tool."), 
-			}, "\n")		
+				S("Place one or more extender nearby the sensor and connect each extender"),
+				S("with one further actuator by means of the Connection Tool."),
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/i18n.py b/signs_bot/i18n.py
old mode 100644
new mode 100755
diff --git a/signs_bot/init.lua b/signs_bot/init.lua
index e02652c..a1b25aa 100644
--- a/signs_bot/init.lua
+++ b/signs_bot/init.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	A robot controlled by signs
 
 ]]--
@@ -15,7 +15,7 @@
 signs_bot = {}
 
 -- Version for compatibility checks, see readme.md/history
-signs_bot.version = 1.09
+signs_bot.version = 1.12
 
 -- Test for MT 5.4 new string mode
 signs_bot.CLIP = minetest.features.use_texture_alpha_string_modes and "clip" or true
diff --git a/signs_bot/interpreter.lua b/signs_bot/interpreter.lua
index 0d58f98..7a8bd1a 100644
--- a/signs_bot/interpreter.lua
+++ b/signs_bot/interpreter.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Signs Bot: Command interpreter
 
 ]]--
@@ -20,7 +20,7 @@ local MAX_SIZE = 1000  -- max number of tokens
 local tCmdDef = {}
 local lCmdLookup = {}
 local tSymbolTbl = {}
-local CodeCache = {}	
+local CodeCache = {}
 
 local api = {}
 
@@ -92,7 +92,7 @@ local function tokenizer(script)
 	end
 	tokens[#tokens + 1] = "exit"
 	return tokens
-end	
+end
 
 local function pass1(tokens)
 	local pc = 1
@@ -125,7 +125,7 @@ local function compile(script)
 	local tokens = tokenizer(script)
 	pass1(tokens)
 	return pass2(tokens)
-end	
+end
 
 local function gen_string_cmnd(code, pc, num_param, script)
 	local tokens = tokenizer(script)
@@ -149,9 +149,9 @@ local function register_command(cmnd_name, num_param, cmnd_func, check_func)
 	assert(check_func or num_param == 0, cmnd_name..": check_func = "..dump(check_func))
 	lCmdLookup[#lCmdLookup + 1] = {num_param, cmnd_func, cmnd_name}
 	tCmdDef[cmnd_name] = {
-		num_param = num_param, 
-		cmnd = cmnd_func, 
-		name = cmnd_name, 
+		num_param = num_param,
+		cmnd = cmnd_func,
+		name = cmnd_name,
 		check = check_func,
 		opcode = #lCmdLookup,
 	}
@@ -167,7 +167,7 @@ register_command("repeat", 1,
 		cnt = tonumber(cnt) or 0
 		return cnt > 0 and cnt < 1000
 	end
-)	
+)
 
 register_command("end", 0,
 	function(base_pos, mem)
@@ -183,7 +183,7 @@ register_command("end", 0,
 		end
 		return api.DONE
 	end
-)	
+)
 
 register_command("call", 1,
 	function(base_pos, mem, addr)
@@ -197,7 +197,7 @@ register_command("call", 1,
 	function(addr)
 		return addr and tSymbolTbl[addr..":"]
 	end
-)	
+)
 
 register_command("return", 0,
 	function(base_pos, mem)
@@ -208,7 +208,7 @@ register_command("return", 0,
 		mem.Stack[#mem.Stack] = nil
 		return api.DONE
 	end
-)	
+)
 
 register_command("jump", 1,
 	function(base_pos, mem, addr)
@@ -218,7 +218,7 @@ register_command("jump", 1,
 	function(addr)
 		return addr and tSymbolTbl[addr..":"]
 	end
-)	
+)
 
 register_command("exit", 0,
 	function(base_pos, mem)
@@ -234,15 +234,20 @@ function api.register_command(cmnd_name, num_param, cmnd_func, check_func)
 	register_command(cmnd_name, num_param, cmnd_func, check_func)
 end
 
+function api.check_label(label)
+	return label and tSymbolTbl[label..":"] ~= nil
+end
+
+
 -- function returns: true/false, error_string, line-num
 function api.check_script(script)
 	local tbl = {}
 	local num_token = 0
-	
+
 	-- to fill the symbol table
 	local tokens = tokenizer(script)
 	pass1(tokens)
-	
+
 	for idx, cmnd, param1, param2, param3 in get_line_tokens(script) do
 		if tCmdDef[cmnd] then
 			num_token = num_token + 1 + tCmdDef[cmnd].num_param
@@ -270,7 +275,7 @@ function api.check_script(script)
 		return false, S("'end' missing"), 0
 	end
 	return true, S("Checked and approved"), 0
-end	
+end
 
 -- function returns: true/false, error-string
 -- default_cmnd is used for the 'cond_move'
@@ -283,7 +288,7 @@ function api.run_script(base_pos, mem)
 	local opcode = code[mem.pc]
 	if opcode then
 		local num_param, func = unpack(lCmdLookup[opcode])
-		
+
 		--dbg_out(opcode, num_param, code, mem.pc)
 		local res, err = func(base_pos, mem, code[mem.pc+1], code[mem.pc+2], code[mem.pc+3])
 		if res == api.DONE then
@@ -303,6 +308,7 @@ function api.reset_script(base_pos, mem)
 	CodeCache[hash] = nil
 	mem.pc = 1
 	mem.Stack = {}
+	mem.bot_falling = nil
 end
 
 return api
diff --git a/signs_bot/legacy.lua b/signs_bot/legacy.lua
index e0982e3..82b0e82 100644
--- a/signs_bot/legacy.lua
+++ b/signs_bot/legacy.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Registation of standard chests and furnace
 
 ]]--
@@ -29,14 +29,14 @@ signs_bot.register_inventory({"default:chest_locked", "default:chest_locked_open
 		allow_inventory_put = function(pos, stack, player_name)
 			local owner = M(pos):get_string("owner")
 			return owner == player_name
-		end, 
+		end,
 		listname = "main",
 	},
 	take = {
 		allow_inventory_take = function(pos, stack, player_name)
 			local owner = M(pos):get_string("owner")
 			return owner == player_name
-		end, 
+		end,
 		listname = "main",
 	},
 })
diff --git a/signs_bot/lib.lua b/signs_bot/lib.lua
index 9a82db1..2ff63e8 100644
--- a/signs_bot/lib.lua
+++ b/signs_bot/lib.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Signs Bot: Library with helper functions
 
 ]]--
@@ -33,13 +33,13 @@ function signs_bot.lib.register_node_to_be_dug(name)
 	NotSoSimpleNodes[name] = true
 end
 
--- Determine the next robot position based on the robot position, 
+-- Determine the next robot position based on the robot position,
 -- the robot param2.
 function signs_bot.lib.next_pos(pos, param2)
 	return vector.add(pos, Face2Dir[param2])
 end
 
--- Determine the destination position based on the robot position, 
+-- Determine the destination position based on the robot position,
 -- the robot param2, and a route table like : {0,0,3}
 -- 0 = forward, 1 = right, 2 = backward, 3 = left
 function signs_bot.lib.dest_pos(pos, param2, route)
@@ -62,7 +62,7 @@ local function poke_objects(pos, param2, objects)
 		pos1 = vector.add(pos1, vector.multiply(Face2Dir[param2], 0.2))
 		obj:move_to(pos1)
 	end
-end	
+end
 
 -- check if nodeA on posA == air-like and nodeB == solid and no player around
 function signs_bot.lib.check_pos(posA, nodeA, nodeB, param2)
@@ -124,7 +124,7 @@ function signs_bot.lib.is_simple_node(node)
 		return handle_drop(ndef.drop)
 	end
 	return ndef.drop or node.name
-end	
+end
 
 -- Check rights before node is dug or inventory is used
 function signs_bot.lib.not_protected(base_pos, pos)
@@ -148,7 +148,7 @@ end
 -- Search for items in the inventory and return the item_name or nil.
 function signs_bot.lib.peek_inv(inv, listname)
 	if inv:is_empty(listname) then return nil end
-	
+
 	local inv_size =  inv:get_size(listname)
 
 	for idx in signs_bot.random(inv_size) do
@@ -174,7 +174,7 @@ end
 --
 --  Place/dig signs
 --
-function signs_bot.lib.place_sign(pos, sign, param2)				
+function signs_bot.lib.place_sign(pos, sign, param2)
 	if sign:get_name() then
 		minetest.set_node(pos, {name=sign:get_name(), param2=param2})
 		local ndef = minetest.registered_nodes[sign:get_name()]
@@ -240,8 +240,8 @@ end
 
 local NestedCounter = 0
 function signs_bot.lib.activate_extender_nodes(pos, is_sensor)
-	if is_sensor then 
-		NestedCounter = 0 
+	if is_sensor then
+		NestedCounter = 0
 	else
 		NestedCounter = NestedCounter + 1
 		if NestedCounter >= 5 then
@@ -265,11 +265,11 @@ local function start_pos(robot_pos, robot_param2, x_size, lvl_offs)
 	else
 		return dest_pos(pos, robot_param2, {3})
 	end
-end	
+end
 
 --
 -- Return a table with all positions to copy
--- 
+--
 function signs_bot.lib.gen_position_table(robot_pos, robot_param2, x_size, z_size, lvl_offs)
 	local tbl = {}
 	if robot_pos and robot_param2 and x_size and z_size and lvl_offs then
diff --git a/signs_bot/locale/signs_bot.de.tr b/signs_bot/locale/signs_bot.de.tr
index 36d62ef..6564d53 100644
--- a/signs_bot/locale/signs_bot.de.tr
+++ b/signs_bot/locale/signs_bot.de.tr
@@ -25,6 +25,11 @@ The box inventory simulates the inventory of the bot.=Das Inventar der Box simul
 You will not be able to access the inventory, if the bot is running.=Du hast keinen Zugriff auf das Inventar, sofern der Roboter unterwegs ist.
 The bot can carry up to 8 stacks and 6 signs with it.=Der Roboter kann 8 Stapel von Blöcken und 6 Zeichen transportieren.
 
+### basis.lua ###
+### techage.lua ###
+
+charging=aufladen
+
 ### bot_flap.lua ###
 
 Exit=Beenden
@@ -41,11 +46,6 @@ Bot Sensor: Not connected=Bot Sensor: Nicht verbunden
 The Bot Sensor detects any bot and sends a signal, if a bot is nearby.=Der Roboter Sensor entdeckt jeden Roboter und sendet ein Signal, sofern ein Roboter in der Nähe ist.
 The sensor direction does not care.=Die Ausrichtung des Sensor spielt keine Rolle.
 
-### bot_sensor.lua ###
-### cart_sensor.lua ###
-
-the sensor range is one node/meter.=Der Sensorbereich ist einen Block/Meter groß.
-
 ### cart_sensor.lua ###
 
 Cart Sensor: Connected with=Wagen Sensor: Verbunden mit
@@ -54,6 +54,11 @@ Cart Sensor: Not connected=Wagen Sensor: Nicht verbunden
 The Cart Sensor detects and sends a signal, if a cart (Minecart) is nearby.=Der Wagen Sensor sendet ein Signal, sofern ein Wagen in der Nähe ist.
 The sensor has an active side (red) that must point to the rail/cart.=Der Sensor hat eine aktive Seite (rot), welche zu den Schienen zeigen muss.
 
+### cart_sensor.lua ###
+### bot_sensor.lua ###
+
+the sensor range is one node/meter.=Der Sensorbereich ist einen Block/Meter groß.
+
 ### changer.lua ###
 
 Signs:=Zeichen:
@@ -85,27 +90,28 @@ Sign 'farming'=Zeichen 'Farming'
 Used to harvest and seed a 3x3 field.=Benötigt um ein 3x3 Feld zu ernten und wieder zu sähen.
 The seed to be placed has to be in the first inventory slot of the bot.=Das Saatgut, dass gesät werden soll, muss sich an der 1. Position im Inventar befinden.
 
-### cmd_flowers.lua ###
-
-Cutting flowers, leaves and tree blocks@nin front of the robot@non a 3x3 field.=Schneide Blumen, Blätter und Baumblöcke@nin einem 3x3 großem Feld@nvor dem Roboter.
-Sign "flowers"=Zeichen "Blumen"
-Sign 'flowers'=Zeichen 'Blumen'
-Used to cut flowers on a 3x3 field.=Benötigt um ein 3x3 Blumenfeld zu ernten.
-
-### cmd_flowers.lua ###
 ### cmd_farming.lua ###
+### cmd_flowers.lua ###
 
 Place the sign in front of the field.=Platziere das Zeichen vor das Feld.
 When finished, the bot turns.=Der Roboter dreht um, wenn er fertig ist.
 
+### cmd_flowers.lua ###
+
+Cutting flowers, papyrus,@nleaves and tree blocks@nin front of the robot@non a 3x3 field.=Schneide Blumen, Papyrus,@nBlätter und Baumblöcke@nin einem 3x3 großem Feld@nvor dem Roboter.
+Sign "flowers"=Zeichen "Blumen"
+Sign 'flowers'=Zeichen 'Blumen'
+Used to cut flowers on a 3x3 field.=Benötigt um ein 3x3 Blumenfeld zu ernten.
+
 ### cmd_item.lua ###
 
-Take <num> items from a chest like node@nand put it into the item inventory.@n<slot> is the inventory slot (1..8) or 0 for any one=Nehme <num> Gegenstände aus der@nKiste oder dem Kisten-ähnlichen Block@nund tue diese in das eigene Inventar@nan der Position <slot>. Slot = (1..8)@noder 0 für irgend eine Position
-Add <num> items to a chest like node@ntaken from the item inventory.@n<slot> is the inventory slot (1..8) or 0 for any one=Lege <num> Gegenstände aus dem@neigenen Inventar in die andere Kiste.@n<slot> ist die Position im@neigenen Inventar (1--8).@noder 0 für irgend eine Position
-Add <num> fuel to a furnace like node@ntaken from the item inventory.@n<slot> is the inventory slot (1..8) or 0 for any one=Lege <num> Brennstoffe aus dem@neigenen Inventar in den anderen Block.@n<slot> ist die Position im@neigenen Inventar (1--8).@noder 0 für irgend eine Position
+Take <num> items from a chest like node@nand put it into the item inventory.@n<slot> is the bot inventory slot@n(1..8) or 0 for any one=Nehme <num> Gegenstände aus der@nKiste oder dem Kisten-ähnlichen Block@nund tue diese in das eigene Inventar@nan der Position <slot>. Slot = (1..8)@noder 0 für irgend eine Position
+Check if there are <num>@nitems in the chest like node.@nIf not, jump to <label>@n<slot> is the bot inventory slot@n(1..8) to specify the item, or 0 for any item=Prüfe, ob sich <num> Gegenstände@nin dem Kisten-ähnlichen Block befinden.@nWenn nicht, springe zu <label>@n<slot> ist der Bot-Inventar-Slot@n(1..8) um einen Gegenstand auszuwählen, oder 0 für irgendeinen Gegenstand
+Add <num> items to a chest like node@ntaken from the item inventory.@n<slot> is the bot inventory slot (1..8) or 0 for any one=Lege <num> Gegenstände aus dem@neigenen Inventar in die andere Kiste.@n<slot> ist die Position im@neigenen Inventar (1--8).@noder 0 für irgend eine Position
+Add <num> fuel to a furnace like node@ntaken from the item inventory.@n<slot> is the bot inventory slot (1..8) or 0 for any one=Lege <num> Brennstoffe aus dem@neigenen Inventar in den anderen Block.@n<slot> ist die Position im@neigenen Inventar (1--8).@noder 0 für irgend eine Position
 deprecated, use bot inventory configuration instead=veraltet, benutze stattdessen die Inventar Konfigurationsmöglichkeit
-Pick up all objects@nin a 3x3 field.@n<slot> is the inventory slot (1..8) or 0 for any one=Hebe alle Objekte in einem@n3x3 Blöcke großen Feld auf@nund lege diese in das eigene@nInventar an Position <slot> (1-8)@noder 0 für irgend eine Position
-Drop items in front of the bot.@n<slot> is the inventory slot (1..8) or 0 for any one=Lasse ein Objekt aus dem eigenen@nInventar vor dem Roboter fallen.@n<slot> ist die Position im@neigenen Inventar (1--8).@noder 0 für irgend eine Position
+Pick up all objects@nin a 3x3 field.@n<slot> is the bot inventory slot (1..8) or 0 for any one=Hebe alle Objekte in einem@n3x3 Blöcke großen Feld auf@nund lege diese in das eigene@nInventar an Position <slot> (1-8)@noder 0 für irgend eine Position
+Drop items in front of the bot.@n<slot> is the bot inventory slot (1..8) or 0 for any one=Lasse ein Objekt aus dem eigenen@nInventar vor dem Roboter fallen.@n<slot> ist die Position im@neigenen Inventar (1--8).@noder 0 für irgend eine Position
 Punch a rail cart to start it=Schlage den Wagen um ihn zu starten
 
 ### cmd_move.lua ###
@@ -116,6 +122,7 @@ Turn the robot to the right=Drehe den Roboter@nnach rechts
 Turn the robot around=Drehe den Roboter@num (180 Grad)
 Move the robot upwards=Bewege den Roboter@nnach oben
 Move the robot down=Bewege den Roboter@nnach unten
+Fall into a hole/chasm (up to 10 blocks)=Falle in ein Loch/Abgrund (bis zu 10 Blöcke)
 Stop the robot for <sec> seconds@n(1..9999)=Stoppe den Roboter@nfür <sec> Sekunden (1.9999)
 Stop the robot.=Stoppe den Roboter.
 Turn the robot off@nand put it back in the box.=Schalte den Roboter aus und@nsetze ihn damit zurück in@nseine Box.
@@ -151,6 +158,11 @@ Dig the block above the robot.@n<slot> is the inventory slot (1..8)=Entferne ein
 Rotate the block in front of the robot@n<lvl> is one of:  -1   0   +1@n<steps> is one of:  1   2   3=Rotiere den Block vor dem Roboter.@nFür <lvl> ist zulässig: -1   0   +1@nFür <steps> ist zulässig: 1   2   3
 Bot torch=Bot Fackel
 
+### cmd_place.lua ###
+### cmd_soup.lua ###
+
+Error: Position protected=Fehler: Position geschützt
+
 ### cmd_sign.lua ###
 
 Commands,Help=Kommandos,Hilfe
@@ -218,11 +230,6 @@ to prevent wooden sign from catching fire.=um zu verhindern, dass das Holzschild
   4 - empty bowl (from farming or xdecor mods)=  4 - Leere Schüssel (Von der Mod farming oder xdecor)
 The result is one bowl with vegetable soup in selected inventory slot.=Das Ergebnis ist eine Schüssel mit Gemüsesuppe an der ausgewählten Inventarposition.
 
-### cmd_soup.lua ###
-### cmd_place.lua ###
-
-Error: Position protected=Fehler: Position geschützt
-
 ### cmd_trees.lua ###
 
 Used to harvest an aspen or pine tree trunk=Wird verwendet, um einen Espen- oder Kiefernstamm zu ernten
@@ -244,8 +251,8 @@ call a subroutine (with 'return' statement)=Aufruf einer Unterfunktion (mit 'ret
 return from a subroutine=Rückkehr von einer Unterfunktion
 jump to a label=Sprung zu einer Marke
 Move the robot 1..999 steps forward@nwithout paying attention to any signs.@nUp and down movements also become@ncounted as steps.=Bewege den Roboter 1..999 Schritte@nvorwärts ohne auf Zeichen zu achten.@nAuf- und Ab-Bewegungen werden auch@nals Schritte gezählt.
-Walk until a sign or obstacle is@nreached. Then continue with the next command.@nWhen a sign has been reached, @nthe current program is ended@nand the bot executes the@nnew program from the sign=Gehe bis ein Zeichen oder Hindernis@nerreicht wurde. Führe dann das nächste@nKommando aus. @nWurde ein Zeichen erreicht, so arbeite@ndie Kommandos des Zeichens als@nUnter-Prozess ab
-Print given text as chat message.@nFor two or more words, use the '*' character @ninstead of spaces, like "Hello*world"=Gebe den angegebenen Text als Chat-Nachricht aus.@nFür zwei oder mehr Wörter verwende das Zeichen '*' @nanstelle von Leerzeichen, z. B. "Hallo*Welt".
+Walk until a sign or obstacle is@nreached. Then continue with the next command.@nWhen a sign has been reached,@nthe current program is ended@nand the bot executes the@nnew program from the sign=Gehe bis ein Zeichen oder Hindernis@nerreicht wurde. Führe dann das nächste@nKommando aus. @nWurde ein Zeichen erreicht, so arbeite@ndie Kommandos des Zeichens als@nUnter-Prozess ab
+Print given text as chat message.@nFor two or more words, use the '*' character@ninstead of spaces, like "Hello*world"=Gebe den angegebenen Text als Chat-Nachricht aus.@nFür zwei oder mehr Wörter verwende das Zeichen '*' @nanstelle von Leerzeichen, z. B. "Hallo*Welt".
 
 ### compost.lua ###
 
@@ -269,6 +276,11 @@ Signal Delayer=Signal Verzögerer
 Signals are forwarded delayed. Subsequent signals are queued.=Signale werden verzögert weitergeleitet. Nachfolgende Signale werden in die Warteschlange gestellt.
 The delay time can be configured.=Die Verzögerungszeit kann eingestellt werden.
 
+### delayer.lua ###
+### timer.lua ###
+
+Start=Start
+
 ### doc.lua ###
 
 After you have placed the Signs Bot Box, you can start the bot by means of the 'On' button in the box menu.=Nachdem du die Roboter-Kiste platziert hast, kannst du den Roboter über den "An" Button im Kistenmenü starten.
@@ -400,11 +412,6 @@ inputs=Eingängen
 Signal AND=Signal UND
 Signal is sent, if all input signals are received.=Signal wird gesendet, wenn all Eingangssignale empfangen wurden.
 
-### logic_and.lua ###
-### timer.lua ###
-
-Connected with=Verbunden mit
-
 ### node_sensor.lua ###
 
 Node Sensor: Connected with =Block Sensor: Verbunden mit 
@@ -447,13 +454,9 @@ The Bot takes items out of a minecart in front of it, pushes the cart and then t
 no power=kein Strom
 Ignite the techage charcoal lighter=Zünde den Holzkohle-Anzünder an
 Turns the bot off if the@nbattery power is below the@ngiven value in percent (1..99)=Schalte den Bot aus,@nwenn die Batterieladung kleiner@nist als der angegebene Wert@nin Prozent (1.99)
+Jump to <label> if the@nbattery power is below the@ngiven value in percent (1..99)=Springe zu <label> wenn die@nBatterieladung unter dem@ngegebenen Wert in Prozent (1..99) liegt
 fully charged=voll geladen
-Sends a techage command@nto a given node. @nReceiver is addressed by@nthe techage node number.@nFor commands with two or more @nwords, use the '*' character @ninstead of spaces, e.g.: @nsend_cmnd 3465 pull*default:dirt*2=Sende ein techage Kommando@nan einen Block mit der@nangegebenen Blocknummer.@nFür Kommandos mit zwei oder mehr @nWörtern verwende das Zeichen '*' @nanstelle des Leerzeichens, wie bspw.:@nsend_cmnd 3465 pull*default:dirt*2
-
-### techage.lua ###
-### basis.lua ###
-
-charging=aufladen
+Sends a techage command@nto a given node.@nReceiver is addressed by@nthe techage node number.@nFor commands with two or more@nwords, use the '*' character@ninstead of spaces, e.g.:@nsend_cmnd 3465 pull*default:dirt*2=Sende ein techage Kommando@nan einen Block mit der@nangegebenen Blocknummer.@nFür Kommandos mit zwei oder mehr @nWörtern verwende das Zeichen '*' @nanstelle des Leerzeichens, wie bspw.:@nsend_cmnd 3465 pull*default:dirt*2
 
 ### timer.lua ###
 
@@ -464,10 +467,11 @@ Special kind of sensor.=Spezielle Form eines Sensors.
 Can be programmed with a time in seconds, e.g. to start the bot cyclically.=Kann mit einer Zeit in Sekunden programmiert werden, um bspw. den Roboter zyklisch zu starten.
 
 ### timer.lua ###
-### delayer.lua ###
+### logic_and.lua ###
 
-Start=Start
+Connected with=Verbunden mit
 
 ### tool.lua ###
 
 Sensor Connection Tool=Sensor Verbindungswerkzeug
+
diff --git a/signs_bot/locale/template.txt b/signs_bot/locale/template.txt
index 75f90ec..511301a 100644
--- a/signs_bot/locale/template.txt
+++ b/signs_bot/locale/template.txt
@@ -25,6 +25,11 @@ The box inventory simulates the inventory of the bot.=
 You will not be able to access the inventory, if the bot is running.=
 The bot can carry up to 8 stacks and 6 signs with it.=
 
+### basis.lua ###
+### techage.lua ###
+
+charging=
+
 ### bot_flap.lua ###
 
 Exit=
@@ -41,11 +46,6 @@ Bot Sensor: Not connected=
 The Bot Sensor detects any bot and sends a signal, if a bot is nearby.=
 The sensor direction does not care.=
 
-### bot_sensor.lua ###
-### cart_sensor.lua ###
-
-the sensor range is one node/meter.=
-
 ### cart_sensor.lua ###
 
 Cart Sensor: Connected with=
@@ -54,6 +54,11 @@ Cart Sensor: Not connected=
 The Cart Sensor detects and sends a signal, if a cart (Minecart) is nearby.=
 The sensor has an active side (red) that must point to the rail/cart.=
 
+### cart_sensor.lua ###
+### bot_sensor.lua ###
+
+the sensor range is one node/meter.=
+
 ### changer.lua ###
 
 Signs:=
@@ -85,27 +90,28 @@ Sign 'farming'=
 Used to harvest and seed a 3x3 field.=
 The seed to be placed has to be in the first inventory slot of the bot.=
 
-### cmd_flowers.lua ###
-
-Cutting flowers, leaves and tree blocks@nin front of the robot@non a 3x3 field.=
-Sign "flowers"=
-Sign 'flowers'=
-Used to cut flowers on a 3x3 field.=
-
-### cmd_flowers.lua ###
 ### cmd_farming.lua ###
+### cmd_flowers.lua ###
 
 Place the sign in front of the field.=
 When finished, the bot turns.=
 
+### cmd_flowers.lua ###
+
+Cutting flowers, papyrus,@nleaves and tree blocks@nin front of the robot@non a 3x3 field.=
+Sign "flowers"=
+Sign 'flowers'=
+Used to cut flowers on a 3x3 field.=
+
 ### cmd_item.lua ###
 
-Take <num> items from a chest like node@nand put it into the item inventory.@n<slot> is the inventory slot (1..8) or 0 for any one=
-Add <num> items to a chest like node@ntaken from the item inventory.@n<slot> is the inventory slot (1..8) or 0 for any one=
-Add <num> fuel to a furnace like node@ntaken from the item inventory.@n<slot> is the inventory slot (1..8) or 0 for any one=
+Take <num> items from a chest like node@nand put it into the item inventory.@n<slot> is the bot inventory slot@n(1..8) or 0 for any one=
+Check if there are <num>@nitems in the chest like node.@nIf not, jump to <label>@n<slot> is the bot inventory slot@n(1..8) to specify the item, or 0 for any item=
+Add <num> items to a chest like node@ntaken from the item inventory.@n<slot> is the bot inventory slot (1..8) or 0 for any one=
+Add <num> fuel to a furnace like node@ntaken from the item inventory.@n<slot> is the bot inventory slot (1..8) or 0 for any one=
 deprecated, use bot inventory configuration instead=
-Pick up all objects@nin a 3x3 field.@n<slot> is the inventory slot (1..8) or 0 for any one=
-Drop items in front of the bot.@n<slot> is the inventory slot (1..8) or 0 for any one=
+Pick up all objects@nin a 3x3 field.@n<slot> is the bot inventory slot (1..8) or 0 for any one=
+Drop items in front of the bot.@n<slot> is the bot inventory slot (1..8) or 0 for any one=
 Punch a rail cart to start it=
 
 ### cmd_move.lua ###
@@ -116,6 +122,7 @@ Turn the robot to the right=
 Turn the robot around=
 Move the robot upwards=
 Move the robot down=
+Fall into a hole/chasm (up to 10 blocks)=
 Stop the robot for <sec> seconds@n(1..9999)=
 Stop the robot.=
 Turn the robot off@nand put it back in the box.=
@@ -151,6 +158,11 @@ Dig the block above the robot.@n<slot> is the inventory slot (1..8)=
 Rotate the block in front of the robot@n<lvl> is one of:  -1   0   +1@n<steps> is one of:  1   2   3=
 Bot torch=
 
+### cmd_place.lua ###
+### cmd_soup.lua ###
+
+Error: Position protected=
+
 ### cmd_sign.lua ###
 
 Commands,Help=
@@ -218,11 +230,6 @@ to prevent wooden sign from catching fire.=
   4 - empty bowl (from farming or xdecor mods)=
 The result is one bowl with vegetable soup in selected inventory slot.=
 
-### cmd_soup.lua ###
-### cmd_place.lua ###
-
-Error: Position protected=
-
 ### cmd_trees.lua ###
 
 Used to harvest an aspen or pine tree trunk=
@@ -244,8 +251,8 @@ call a subroutine (with 'return' statement)=
 return from a subroutine=
 jump to a label=
 Move the robot 1..999 steps forward@nwithout paying attention to any signs.@nUp and down movements also become@ncounted as steps.=
-Walk until a sign or obstacle is@nreached. Then continue with the next command.@nWhen a sign has been reached, @nthe current program is ended@nand the bot executes the@nnew program from the sign=
-Print given text as chat message.@nFor two or more words, use the '*' character @ninstead of spaces, like "Hello*world"=
+Walk until a sign or obstacle is@nreached. Then continue with the next command.@nWhen a sign has been reached,@nthe current program is ended@nand the bot executes the@nnew program from the sign=
+Print given text as chat message.@nFor two or more words, use the '*' character@ninstead of spaces, like "Hello*world"=
 
 ### compost.lua ###
 
@@ -269,6 +276,11 @@ Signal Delayer=
 Signals are forwarded delayed. Subsequent signals are queued.=
 The delay time can be configured.=
 
+### delayer.lua ###
+### timer.lua ###
+
+Start=
+
 ### doc.lua ###
 
 After you have placed the Signs Bot Box, you can start the bot by means of the 'On' button in the box menu.=
@@ -400,11 +412,6 @@ inputs=
 Signal AND=
 Signal is sent, if all input signals are received.=
 
-### logic_and.lua ###
-### timer.lua ###
-
-Connected with=
-
 ### node_sensor.lua ###
 
 Node Sensor: Connected with =
@@ -447,13 +454,9 @@ The Bot takes items out of a minecart in front of it, pushes the cart and then t
 no power=
 Ignite the techage charcoal lighter=
 Turns the bot off if the@nbattery power is below the@ngiven value in percent (1..99)=
+Jump to <label> if the@nbattery power is below the@ngiven value in percent (1..99)=
 fully charged=
-Sends a techage command@nto a given node. @nReceiver is addressed by@nthe techage node number.@nFor commands with two or more @nwords, use the '*' character @ninstead of spaces, e.g.: @nsend_cmnd 3465 pull*default:dirt*2=
-
-### techage.lua ###
-### basis.lua ###
-
-charging=
+Sends a techage command@nto a given node.@nReceiver is addressed by@nthe techage node number.@nFor commands with two or more@nwords, use the '*' character@ninstead of spaces, e.g.:@nsend_cmnd 3465 pull*default:dirt*2=
 
 ### timer.lua ###
 
@@ -464,9 +467,9 @@ Special kind of sensor.=
 Can be programmed with a time in seconds, e.g. to start the bot cyclically.=
 
 ### timer.lua ###
-### delayer.lua ###
+### logic_and.lua ###
 
-Start=
+Connected with=
 
 ### tool.lua ###
 
diff --git a/signs_bot/logic_and.lua b/signs_bot/logic_and.lua
index 3a8fcde..ad872ba 100644
--- a/signs_bot/logic_and.lua
+++ b/signs_bot/logic_and.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Signal AND.
 	Signal is sent, if all input signals are received.
 ]]--
@@ -25,7 +25,7 @@ local lib = signs_bot.lib
 local function inputs(tbl)
 	local out = {}
 	for _,v in ipairs(tbl) do
-		if v then 
+		if v then
 			out[#out + 1] = "1"
 		else
 			out[#out + 1] = "0"
@@ -33,7 +33,7 @@ local function inputs(tbl)
 	end
 	return table.concat(out, " ")
 end
-	
+
 local function update_infotext(pos, dest_pos, cmnd)
 	local mem = tubelib2.get_mem(pos)
 	local text = table.concat({
@@ -49,7 +49,7 @@ local function update_infotext(pos, dest_pos, cmnd)
 		inputs(mem.inputs or {})
 	}, " ")
 	M(pos):set_string("infotext", text)
-end	
+end
 
 local function all_inputs(mem)
 	mem.inputs = mem.inputs or {}
@@ -94,7 +94,7 @@ local function signs_bot_get_signal(pos, node)
 end
 
 -- switch to normal texture
-local function turn_off(pos)	
+local function turn_off(pos)
 	local node = minetest.get_node(pos)
 	if node.name == "signs_bot:and2" or node.name == "signs_bot:and3" then
 		node.name = "signs_bot:and1"
@@ -103,7 +103,7 @@ local function turn_off(pos)
 end
 
 -- switch to not zero texture
-local function not_zero(pos)	
+local function not_zero(pos)
 	local node = minetest.get_node(pos)
 	if node.name == "signs_bot:and1" or node.name == "signs_bot:and3" then
 		node.name = "signs_bot:and2"
@@ -133,7 +133,7 @@ local function signs_bot_on_signal(pos, node, signal)
 	signal = tonumber(signal) or 1
 	mem.inputs = mem.inputs or {}
 	mem.inputs[signal] = true
-	
+
 	if all_inputs(mem) then
 		send_signal(pos)
 	else
@@ -156,14 +156,14 @@ minetest.register_node("signs_bot:and1", {
 		"signs_bot_sensor2.png^signs_bot_and1.png",
 		"signs_bot_sensor2.png",
 	},
-	
+
 	after_place_node = function(pos, placer)
 		local meta = M(pos)
 		local mem = tubelib2.init_mem(pos)
 		mem.inputs = {}
 		infotext(pos)
 	end,
-	
+
 	signs_bot_get_signal = signs_bot_get_signal,
 	signs_bot_on_signal = signs_bot_on_signal,
 	update_infotext = update_infotext,
@@ -248,8 +248,8 @@ if minetest.get_modpath("doc") then
 		data = {
 			item = "signs_bot:and1",
 			text = table.concat({
-				S("Signal is sent, if all input signals are received."), 
-			}, "\n")		
+				S("Signal is sent, if all input signals are received."),
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/node_sensor.lua b/signs_bot/node_sensor.lua
index 519f4b3..716d96c 100644
--- a/signs_bot/node_sensor.lua
+++ b/signs_bot/node_sensor.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Node Sensor
 
 ]]--
@@ -25,7 +25,7 @@ local CYCLE_TIME = 2
 
 local function update_infotext(pos, dest_pos, cmnd)
 	M(pos):set_string("infotext", S("Node Sensor: Connected with ")..P2S(dest_pos).." / "..cmnd)
-end	
+end
 
 local function swap_node(pos, name)
 	local node = minetest.get_node(pos)
@@ -39,8 +39,8 @@ local function swap_node(pos, name)
 	end
 	return false
 end
-	
-	
+
+
 local DropdownValues = {
 	[S("added")] = 1,
 	[S("removed")] = 2,
@@ -69,12 +69,12 @@ local function any_node_changed(pos)
 		return false
 	end
 	local num = #minetest.find_nodes_in_area(mem.pos1, mem.pos2, {"air"})
-	
+
 	if mem.num ~= num then
-		if mem.mode == 1 and num < mem.num then 
+		if mem.mode == 1 and num < mem.num then
 			mem.num = num
 			return true
-		elseif mem.mode == 2 and num > mem.num then 
+		elseif mem.mode == 2 and num > mem.num then
 			mem.num = num
 			return true
 		elseif mem.mode == 3 then
@@ -131,7 +131,7 @@ minetest.register_node("signs_bot:node_sensor", {
 		"signs_bot_sensor1.png^[transformFXR90",
 		"signs_bot_sensor1.png^[transformFXR180",
 	},
-	
+
 	after_place_node = function(pos, placer)
 		local meta = M(pos)
 		local mem = tubelib2.init_mem(pos)
@@ -141,7 +141,7 @@ minetest.register_node("signs_bot:node_sensor", {
 		minetest.get_node_timer(pos):start(CYCLE_TIME)
 		any_node_changed(pos)
 	end,
-	
+
 	on_timer = node_timer,
 	update_infotext = update_infotext,
 	on_receive_fields = on_receive_fields,
@@ -173,7 +173,7 @@ minetest.register_node("signs_bot:node_sensor_on", {
 		"signs_bot_sensor1.png^[transformFXR90",
 		"signs_bot_sensor1.png^[transformFXR180",
 	},
-			
+
 	on_timer = node_timer,
 	update_infotext = update_infotext,
 	on_receive_fields = on_receive_fields,
@@ -220,9 +220,9 @@ if minetest.get_modpath("doc") then
 				S("The node sensor sends cyclical signals when it detects that nodes have appeared or disappeared,"),
 				S("but has to be configured accordingly."),
 				S("Valid nodes are all kind of blocks and plants."),
-				S("The sensor range is 3 nodes/meters in one direction."), 
+				S("The sensor range is 3 nodes/meters in one direction."),
 				S("The sensor has an active side (red) that must point to the observed area."),
-			}, "\n")		
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/nodes.lua b/signs_bot/nodes.lua
index 46cd452..c08c86e 100644
--- a/signs_bot/nodes.lua
+++ b/signs_bot/nodes.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Node information tables for the Bot
 
 ]]--
@@ -31,7 +31,7 @@ function signs_bot.register_farming_plant(inv_seed, plantlet, crop, trellis)
 end
 
 -- inv_sapling is the sapling inventory name
--- sapling is what has to be placed on the ground 
+-- sapling is what has to be placed on the ground
 -- t1/t2 is needed for trees which require the node timer
 function signs_bot.register_tree_saplings(inv_sapling, sapling, t1, t2)
 	signs_bot.TreeSaplings[inv_sapling] = {sapling = sapling, t1 = t1 or 300, t2 = t2 or 1500}
diff --git a/signs_bot/random.lua b/signs_bot/random.lua
index 0564ba9..e043c84 100644
--- a/signs_bot/random.lua
+++ b/signs_bot/random.lua
@@ -7,8 +7,8 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
-	Signs Bot: Random Series 
+
+	Signs Bot: Random Series
 
 ]]--
 
@@ -20,7 +20,7 @@ local function gen_serie(inv_size)
 		offs = offs + 1
 	end
 	local index = 1
-	
+
 	for n = 1, (inv_size*2) do
 		tbl[#tbl + 1] = index
 		index = ((index + offs) % inv_size) + 1
@@ -69,4 +69,4 @@ signs_bot.random = random
 --		tbl[#tbl + 1] = idx
 --	end
 --	print(table.concat(tbl, ", "))
---end
\ No newline at end of file
+--end
diff --git a/signs_bot/robot.lua b/signs_bot/robot.lua
index 55e501a..72ef3a2 100644
--- a/signs_bot/robot.lua
+++ b/signs_bot/robot.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Signs Bot: The Robot itself
 
 ]]--
@@ -15,7 +15,7 @@
 local lib = signs_bot.lib
 
 -- Called when robot is started
-function signs_bot.place_robot(pos1, pos2, param2)	
+function signs_bot.place_robot(pos1, pos2, param2)
 	local node1 = tubelib2.get_node_lvm(pos1)
 	local node2 = tubelib2.get_node_lvm(pos2)
 	if lib.check_pos(pos1, node1, node2, param2) then
@@ -24,7 +24,7 @@ function signs_bot.place_robot(pos1, pos2, param2)
 end
 
 -- Called when robot is removed
-function signs_bot.remove_robot(mem)	
+function signs_bot.remove_robot(mem)
 	local pos = mem.robot_pos
 	local node = tubelib2.get_node_lvm(pos)
 	if node.name == "signs_bot:robot" then
@@ -57,7 +57,7 @@ minetest.register_node("signs_bot:robot", {
 		"signs_bot_robot_left.png",
 		"signs_bot_robot_front.png",
 		"signs_bot_robot_back.png",
-		
+
 	},
 	drawtype = "nodebox",
 	node_box = {
diff --git a/signs_bot/signal.lua b/signs_bot/signal.lua
index 3c5e4db..2a3cdb7 100644
--- a/signs_bot/signal.lua
+++ b/signs_bot/signal.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Signal function
 
 ]]--
@@ -43,8 +43,8 @@ function signs_bot.get_signal(actuator_pos)
 		end
 	end
 end
-	
--- Used by the pairing tool	
+
+-- Used by the pairing tool
 function signs_bot.store_signal(sensor_pos, dest_pos, signal)
 	local meta = sensor_pos and M(sensor_pos)
 	if meta then
diff --git a/signs_bot/signs.lua b/signs_bot/signs.lua
index 2818dd9..a97a4c6 100644
--- a/signs_bot/signs.lua
+++ b/signs_bot/signs.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Signs Bot: Signs
 
 ]]--
@@ -116,9 +116,9 @@ signs_bot.register_signXL = register_signXL
 
 
 register_sign({
-	name = "sign_right", 
-	description = S('Sign "turn right"'), 
-	commands = "turn_right", 
+	name = "sign_right",
+	description = S('Sign "turn right"'),
+	commands = "turn_right",
 	image = "signs_bot_sign_right.png",
 })
 
@@ -132,9 +132,9 @@ minetest.register_craft({
 })
 
 register_sign({
-	name = "sign_left", 
-	description = S('Sign "turn left"'), 
-	commands = "turn_left", 
+	name = "sign_left",
+	description = S('Sign "turn left"'),
+	commands = "turn_left",
 	image = "signs_bot_sign_left.png",
 })
 
@@ -148,9 +148,9 @@ minetest.register_craft({
 })
 
 register_sign({
-	name = "sign_take", 
-	description = S('Sign "take item"'), 
-	commands = "take_item 99\nturn_around", 
+	name = "sign_take",
+	description = S('Sign "take item"'),
+	commands = "take_item 99\nturn_around",
 	image = "signs_bot_sign_take.png",
 })
 
@@ -164,9 +164,9 @@ minetest.register_craft({
 })
 
 register_sign({
-	name = "sign_add", 
-	description = S('Sign "add item"'), 
-	commands = "add_item 99\nturn_around", 
+	name = "sign_add",
+	description = S('Sign "add item"'),
+	commands = "add_item 99\nturn_around",
 	image = "signs_bot_sign_add.png",
 })
 
@@ -180,9 +180,9 @@ minetest.register_craft({
 })
 
 register_sign({
-	name = "sign_stop", 
-	description = S('Sign "stop"'), 
-	commands = "stop", 
+	name = "sign_stop",
+	description = S('Sign "stop"'),
+	commands = "stop",
 	image = "signs_bot_sign_stop.png",
 })
 
@@ -197,9 +197,9 @@ minetest.register_craft({
 
 if minetest.global_exists("minecart") then
 	register_sign({
-		name = "sign_add_cart", 
-		description = S('Sign "add to cart"'), 
-		commands = "drop_items 99 1\npunch_cart\nturn_around", 
+		name = "sign_add_cart",
+		description = S('Sign "add to cart"'),
+		commands = "drop_items 99 1\npunch_cart\nturn_around",
 		image = "signs_bot_sign_add_cart.png",
 	})
 
@@ -213,9 +213,9 @@ if minetest.global_exists("minecart") then
 	})
 
 	register_sign({
-		name = "sign_take_cart", 
-		description = S('Sign "take from cart"'), 
-		commands = "pickup_items 1\npunch_cart\nturn_around", 
+		name = "sign_take_cart",
+		description = S('Sign "take from cart"'),
+		commands = "pickup_items 1\npunch_cart\nturn_around",
 		image = "signs_bot_sign_take_cart.png",
 	})
 
@@ -234,14 +234,14 @@ if minetest.get_modpath("doc") then
 		name = S('Sign "turn right"'),
 		data = {
 			item = "signs_bot:sign_right",
-			text = S("The Bot turns right when it detects this sign in front of it.")		
+			text = S("The Bot turns right when it detects this sign in front of it.")
 		},
 	})
 	doc.add_entry("signs_bot", "sign_left", {
 		name = S('Sign "turn left"'),
 		data = {
 			item = "signs_bot:sign_left",
-			text = S("The Bot turns left when it detects this sign in front of it.")		
+			text = S("The Bot turns left when it detects this sign in front of it.")
 		},
 	})
 	doc.add_entry("signs_bot", "sign_take", {
@@ -250,8 +250,8 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:sign_take",
 			text = table.concat({
 				S("The Bot takes items out of a chest in front of it and then turns around."),
-				S("This sign has to be placed on top of the chest."), 
-			}, "\n")			
+				S("This sign has to be placed on top of the chest."),
+			}, "\n")
 		},
 	})
 	doc.add_entry("signs_bot", "sign_add", {
@@ -260,15 +260,15 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:sign_add",
 			text = table.concat({
 				S("The Bot puts items into a chest in front of it and then turns around."),
-				S("This sign has to be placed on top of the chest."), 
-			}, "\n")			
+				S("This sign has to be placed on top of the chest."),
+			}, "\n")
 		},
 	})
 	doc.add_entry("signs_bot", "sign_stop", {
 		name = S('Sign "stop"'),
 		data = {
 			item = "signs_bot:sign_stop",
-			text = S("The Bot will stop in front of this sign until the sign is removed or the bot is turned off.")		
+			text = S("The Bot will stop in front of this sign until the sign is removed or the bot is turned off.")
 		},
 	})
 end
@@ -280,8 +280,8 @@ if minetest.get_modpath("doc") and minetest.global_exists("minecart") then
 			item = "signs_bot:sign_add_cart",
 			text = table.concat({
 				S("The Bot puts items into a minecart in front of it, pushes the cart and then turns around."),
-				S("This sign has to be placed on top of the rail at the cart end position."), 
-			}, "\n")			
+				S("This sign has to be placed on top of the rail at the cart end position."),
+			}, "\n")
 		},
 	})
 	doc.add_entry("signs_bot", "sign_take_cart", {
@@ -290,8 +290,8 @@ if minetest.get_modpath("doc") and minetest.global_exists("minecart") then
 			item = "signs_bot:sign_take_cart",
 			text = table.concat({
 				S("The Bot takes items out of a minecart in front of it, pushes the cart and then turns around."),
-				S("This sign has to be placed on top of the rail at the cart end position."), 
-			}, "\n")			
+				S("This sign has to be placed on top of the rail at the cart end position."),
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/techage.lua b/signs_bot/techage.lua
index 006a29c..1671c99 100644
--- a/signs_bot/techage.lua
+++ b/signs_bot/techage.lua
@@ -7,7 +7,7 @@
 
 	GPLv3
 	See LICENSE.txt for more information
-	
+
 	Signs Bot: interface for techage
 
 ]]--
@@ -19,7 +19,7 @@ local MAX_CAPA = signs_bot.MAX_CAPA
 local PWR_NEEDED = 8
 
 if minetest.get_modpath("techage") then
-	
+
 	local function on_power(pos)
 		local mem = tubelib2.get_mem(pos)
 		mem.power_available = true
@@ -35,15 +35,16 @@ if minetest.get_modpath("techage") then
 
 	local Cable = techage.ElectricCable
 	local power = networks.power
-	
+
 	signs_bot.register_inventory({"techage:chest_ta2", "techage:chest_ta3", "techage:chest_ta4",
-			"techage:ta3_silo", "techage:ta4_silo", "techage:ta4_sensor_chest"}, {
+			"techage:ta3_silo", "techage:ta4_silo", "techage:ta4_sensor_chest",
+			"techage:ta4_reactor"}, {
 		allow_inventory_put = function(pos, stack, player_name)
 			return not minetest.is_protected(pos, player_name)
-		end, 
+		end,
 		allow_inventory_take = function(pos, stack, player_name)
 			return not minetest.is_protected(pos, player_name)
-		end, 
+		end,
 		put = {
 			listname = "main",
 		},
@@ -54,10 +55,10 @@ if minetest.get_modpath("techage") then
 	signs_bot.register_inventory({"techage:meltingpot", "techage:meltingpot_active"}, {
 		allow_inventory_put = function(pos, stack, player_name)
 			return not minetest.is_protected(pos, player_name)
-		end, 
+		end,
 		allow_inventory_take = function(pos, stack, player_name)
 			return not minetest.is_protected(pos, player_name)
-		end, 
+		end,
 		put = {
 			listname = "src",
 		},
@@ -70,10 +71,10 @@ if minetest.get_modpath("techage") then
 			"techage:ta3_autocrafter_pas", "techage:ta3_autocrafter_act"}, {
 		allow_inventory_put = function(pos, stack, player_name)
 			return not minetest.is_protected(pos, player_name)
-		end, 
+		end,
 		allow_inventory_take = function(pos, stack, player_name)
 			return not minetest.is_protected(pos, player_name)
-		end, 
+		end,
 		put = {
 			listname = "src",
 		},
@@ -88,10 +89,10 @@ if minetest.get_modpath("techage") then
 			"techage:ta4_high_performance_distributor_pas", "techage:ta4_high_performance_distributor_act"}, {
 		allow_inventory_put = function(pos, stack, player_name)
 			return not minetest.is_protected(pos, player_name)
-		end, 
+		end,
 		allow_inventory_take = function(pos, stack, player_name)
 			return not minetest.is_protected(pos, player_name)
-		end, 
+		end,
 		put = {
 			listname = "src",
 		},
@@ -104,7 +105,7 @@ if minetest.get_modpath("techage") then
 		return math.min(math.ceil(((curr_val or 0) * 100.0) / (max_val or 1.0)), 100)
 	end
 	signs_bot.percent_value = percent_value
-	
+
 	function signs_bot.formspec_battery_capa(max_capa, current_capa)
 		local percent = percent_value(max_capa, current_capa)
 		return "image[0.1,0;0.5,1;signs_bot_form_level_bg.png^[lowpart:"..
@@ -113,7 +114,7 @@ if minetest.get_modpath("techage") then
 
 	signs_bot.register_botcommand("ignite", {
 		mod = "techage",
-		params = "",	
+		params = "",
 		num_param = 0,
 		description = S("Ignite the techage charcoal lighter"),
 		cmnd = function(base_pos, mem)
@@ -129,7 +130,7 @@ if minetest.get_modpath("techage") then
 
 	signs_bot.register_botcommand("low_batt", {
 		mod = "techage",
-		params = "<percent>",	
+		params = "<percent>",
 		num_param = 1,
 		description = S("Turns the bot off if the\nbattery power is below the\ngiven value in percent (1..99)"),
 		check = function(val)
@@ -147,17 +148,37 @@ if minetest.get_modpath("techage") then
 		end,
 	})
 
+	signs_bot.register_botcommand("jump_low_batt", {
+		mod = "techage",
+		params = "<percent> <label>",
+		num_param = 2,
+		description = S("Jump to <label> if the\nbattery power is below the\ngiven value in percent (1..99)"),
+		check = function(val, lbl)
+			val = tonumber(val) or 5
+			return val and val > 0 and val < 100 and signs_bot.check_label(lbl)
+		end,
+		cmnd = function(base_pos, mem, val, addr)
+			val = tonumber(val) or 5
+			local pwr = percent_value(signs_bot.MAX_CAPA, mem.capa)
+			if pwr < val then
+				mem.pc = addr - 3
+				return signs_bot.DONE
+			end
+			return signs_bot.DONE
+		end,
+	})
+
 	signs_bot.register_botcommand("send_cmnd", {
 		mod = "techage",
 		params = "<receiver> <command>",
 		num_param = 2,
 		description = S([[Sends a techage command
-to a given node. 
+to a given node.
 Receiver is addressed by
 the techage node number.
-For commands with two or more 
-words, use the '*' character 
-instead of spaces, e.g.: 
+For commands with two or more
+words, use the '*' character
+instead of spaces, e.g.:
 send_cmnd 3465 pull*default:dirt*2]]),
 		check = function(address, command)
 			address = tonumber(address)
@@ -173,12 +194,12 @@ send_cmnd 3465 pull*default:dirt*2]]),
 			return signs_bot.DONE
 		end,
 	})
-	
+
 
     -- Bot in the box
 	function signs_bot.while_charging(pos, mem)
 		mem.capa = mem.capa or 0
-		
+
 		if mem.capa < signs_bot.MAX_CAPA then
 			local consumed = power.consume_power(pos, Cable, nil, PWR_NEEDED)
 			mem.capa = mem.capa + consumed
@@ -192,7 +213,7 @@ send_cmnd 3465 pull*default:dirt*2]]),
 		end
 		return true
 	end
-	
+
 	power.register_nodes({"signs_bot:box"}, Cable, "con")
 
 	techage.register_node({"signs_bot:box"}, {
@@ -215,7 +236,7 @@ send_cmnd 3465 pull*default:dirt*2]]),
 			local inv = meta:get_inventory()
 			return techage.put_items(inv, "main", stack)
 		end,
-		
+
 		on_recv_message = function(pos, src, topic, payload)
 			local mem = tubelib2.get_mem(pos)
 			if topic == "state" then
@@ -254,7 +275,7 @@ send_cmnd 3465 pull*default:dirt*2]]),
 				return "unsupported"
 			end
 		end,
-	})	
+	})
 	techage.register_node({"signs_bot:chest"}, {
 		on_inv_request = function(pos, in_dir, access_type)
 			local meta = minetest.get_meta(pos)
@@ -275,7 +296,7 @@ send_cmnd 3465 pull*default:dirt*2]]),
 			local inv = meta:get_inventory()
 			return techage.put_items(inv, "main", stack)
 		end,
-	})	
+	})
 
 	techage.register_node_for_v1_transition({"signs_bot:box"}, function(pos, node)
 		power.update_network(pos, nil, Cable)
diff --git a/signs_bot/timer.lua b/signs_bot/timer.lua
index 7a09888..1446644 100644
--- a/signs_bot/timer.lua
+++ b/signs_bot/timer.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Bot Timer
 
 ]]--
@@ -34,7 +34,7 @@ local function update_infotext(pos, dest_pos, cmnd)
 		text = S("Bot Timer").." (-- min): "..S("Connected with")
 	end
 	meta:set_string("infotext", text.." "..P2S(dest_pos).." / "..(cmnd or "none").."    ")
-end	
+end
 
 local function update_infotext_local(pos)
 	local meta = M(pos)
@@ -45,7 +45,7 @@ local function update_infotext_local(pos)
 	local signal = meta:get_string("signal_data")
 	local text1 = " (-- min): "
 	local text2 = "Not connected"
-	
+
 	if dest_pos ~= "" and signal ~= "" then
 		text2 = S("Connected with").." "..dest_pos.." / "..signal
 	end
@@ -57,7 +57,7 @@ local function update_infotext_local(pos)
 		minetest.get_node_timer(pos):start(CYCLE_TIME)
 	end
 	meta:set_string("infotext", S("Bot Timer")..text1..text2.."    ")
-end	
+end
 
 
 local function formspec(meta)
@@ -72,7 +72,7 @@ local function formspec(meta)
 end
 
 -- switch to normal texture
-local function turn_off(pos)	
+local function turn_off(pos)
 	local node = minetest.get_node(pos)
 	node.name = "signs_bot:timer"
 	minetest.swap_node(pos, node)
@@ -145,13 +145,13 @@ minetest.register_node("signs_bot:timer", {
 		"signs_bot_sensor2.png^signs_bot_timer.png",
 		"signs_bot_sensor2.png",
 	},
-	
+
 	after_place_node = function(pos, placer)
 		local meta = M(pos)
 		meta:set_string("infotext", S("Bot Timer: Not connected"))
 		meta:set_string("formspec", formspec(meta))
 	end,
-	
+
 	on_receive_fields = on_receive_fields,
 	on_timer = node_timer,
 	update_infotext = update_infotext,
@@ -179,7 +179,7 @@ minetest.register_node("signs_bot:timer_on", {
 		"signs_bot_sensor2.png^signs_bot_timer_on.png",
 		"signs_bot_sensor2.png",
 	},
-			
+
 	on_timer = node_timer,
 	update_infotext = update_infotext,
 	on_rotate = screwdriver.disallow,
@@ -222,8 +222,8 @@ if minetest.get_modpath("doc") then
 			item = "signs_bot:timer",
 			text = table.concat({
 				S("Special kind of sensor."),
-				S("Can be programmed with a time in seconds, e.g. to start the bot cyclically."), 
-			}, "\n")		
+				S("Can be programmed with a time in seconds, e.g. to start the bot cyclically."),
+			}, "\n")
 		},
 	})
 end
diff --git a/signs_bot/tool.lua b/signs_bot/tool.lua
index 6a75214..0971561 100644
--- a/signs_bot/tool.lua
+++ b/signs_bot/tool.lua
@@ -7,7 +7,7 @@
 
 	GPL v3
 	See LICENSE.txt for more information
-	
+
 	Sensor/Actuator Connection Tool
 
 ]]--
@@ -31,7 +31,7 @@ local function get_stored_data(placer)
 		return minetest.string_to_pos(spos), name
 	end
 end
-	
+
 local function store_data(placer, pos, name)
 	local meta = placer:get_meta()
 	if pos then
@@ -61,7 +61,7 @@ local function use_tool(itemstack, placer, pointed_thing)
 	if pointed_thing.type == "node" then
 		local pos1,ntype1 = get_stored_data(placer)
 		local pos2,ntype2 = get_current_data(pointed_thing)
-		
+
 		if ntype1 == "actuator" and (ntype2 == "sensor" or ntype2 == "repeater") then
 			pairing(pos1, pos2)
 			store_data(placer, nil, nil)
@@ -88,7 +88,7 @@ local function use_tool(itemstack, placer, pointed_thing)
 		return
 	end
 end
-			
+
 
 minetest.register_node("signs_bot:connector", {
 	description = S("Sensor Connection Tool"),
diff --git a/ta4_paraglider/init.lua b/ta4_paraglider/init.lua
index 3ed81a2..45ee9cc 100644
--- a/ta4_paraglider/init.lua
+++ b/ta4_paraglider/init.lua
@@ -95,55 +95,57 @@ minetest.register_entity(
 
 			if self.attached ~= nil then
 				local player = minetest.get_player_by_name(self.attached)
-				local controls = player:get_player_control()
-				local hspeed = 5.0
-				local vspeed = -1
-				self.idle = (self.idle or 1) - 1
+				if player then
+					local controls = player:get_player_control()
+					local hspeed = 5.0
+					local vspeed = -1
+					self.idle = (self.idle or 1) - 1
 
-				if controls.up then
-					vspeed = -3
-					hspeed = 8
-					player:set_look_vertical(math.tan(-vspeed / hspeed))
-					set_player_yaw(self, player, yaw)
-					self.idle = 1
-				elseif controls.down then
-					vspeed = -0.25
-					hspeed = 2
-					player:set_look_vertical(math.tan(-vspeed / hspeed))
-					set_player_yaw(self, player, yaw)
-					self.idle = 1
-				end
+					if controls.up then
+						vspeed = -3
+						hspeed = 8
+						player:set_look_vertical(math.tan(-vspeed / hspeed))
+						set_player_yaw(self, player, yaw)
+						self.idle = 1
+					elseif controls.down then
+						vspeed = -0.25
+						hspeed = 2
+						player:set_look_vertical(math.tan(-vspeed / hspeed))
+						set_player_yaw(self, player, yaw)
+						self.idle = 1
+					end
 
-				if controls.right then
-					yaw = yaw - math.pi / 60
-					vspeed = -2
-					hspeed = 4
-					player:set_look_vertical(math.tan(-vspeed / hspeed))
-					set_player_yaw(self, player, yaw)
-					self.idle = 1
-				elseif controls.left then
-					yaw = yaw + math.pi / 60
-					vspeed = -2
-					hspeed = 4
-					player:set_look_vertical(math.tan(-vspeed / hspeed))
-					set_player_yaw(self, player, yaw)
-					self.idle = 1
-				end
+					if controls.right then
+						yaw = yaw - math.pi / 60
+						vspeed = -2
+						hspeed = 4
+						player:set_look_vertical(math.tan(-vspeed / hspeed))
+						set_player_yaw(self, player, yaw)
+						self.idle = 1
+					elseif controls.left then
+						yaw = yaw + math.pi / 60
+						vspeed = -2
+						hspeed = 4
+						player:set_look_vertical(math.tan(-vspeed / hspeed))
+						set_player_yaw(self, player, yaw)
+						self.idle = 1
+					end
 
-				if self.idle == 0 then
-					player:set_look_vertical(math.tan(-vspeed / hspeed))
-					set_player_yaw(self, player, yaw)
-				end
-				
-				self.object:set_yaw(yaw)
-				local vel = vector.multiply(minetest.yaw_to_dir(yaw), hspeed)
-				vel.y = vspeed
-				self.object:set_velocity(vel)
+					if self.idle == 0 then
+						player:set_look_vertical(math.tan(-vspeed / hspeed))
+						set_player_yaw(self, player, yaw)
+					end
+					
+					self.object:set_yaw(yaw)
+					local vel = vector.multiply(minetest.yaw_to_dir(yaw), hspeed)
+					vel.y = vspeed
+					self.object:set_velocity(vel)
 
-				if node_under.name ~= "air" then
-					default.player_attached[self.attached] = false
-					local player = minetest.get_player_by_name(self.attached)
-					player:get_meta():set_int("player_physics_locked", 0)
+					if node_under.name ~= "air" then
+						default.player_attached[self.attached] = false
+						local player = minetest.get_player_by_name(self.attached)
+						player:get_meta():set_int("player_physics_locked", 0)
+					end
 				end
 			else
 				self.object:remove()
@@ -155,7 +157,9 @@ minetest.register_entity(
 					default.player_attached[self.attached] = false
 					self.object:set_detach()
 					local player = minetest.get_player_by_name(self.attached)
-					player:get_meta():set_int("player_physics_locked", 0)
+					if player then
+						player:get_meta():set_int("player_physics_locked", 0)
+					end
 				end
 				self.object:remove()
 			end
diff --git a/techage/README.md b/techage/README.md
index 8fbab06..1e6fcd3 100644
--- a/techage/README.md
+++ b/techage/README.md
@@ -63,16 +63,24 @@ It is highly recommended that you install the following mods, too:
 * [autobahn](https://github.com/joe7575/autobahn): Street blocks and slopes with stripes for faster traveling
 * [[ta4_jetpack](https://github.com/joe7575/ta4_jetpack): A Jetpack with hydrogen as fuel and TA4 recipe
 
-For large servers with many player `lsqlite3` is recommended.
-The package has to be installed via [luarocks](https://luarocks.org/):
+For large servers with many players, the following packages are recommended:
 
-    luarocks install lsqlite3
+* lua-mashal for faster serialization/deserialization of data
+* lsqlite3 for storing node and network data
 
-To enable this `unsafe` package, add 'techage' to the list of trusted mods in minetest.conf:
+The packages have to be installed via [luarocks](https://luarocks.org/):
 
-    secure.trusted_mods = techage
+    luarocks --lua-version 5.1 install lsqlite3
+    luarocks --lua-version 5.1 install lua-marshal
 
-For the installation of 'luarocks' (if not already available), see [luarocks](https://luarocks.org/)
+To enable these `unsafe` packages, add 'techage' and 'lua-marshal'
+to the list of trusted mods in `minetest.conf`:
+
+    secure.trusted_mods = techage,lua-marshal
+
+and add the following line to your `world.mt` or `minetest.conf`:
+
+    techage_use_sqlite = true
 
 Available worlds will be converted to 'lsqlite3', but there is no way back, so:
 
@@ -81,6 +89,10 @@ Available worlds will be converted to 'lsqlite3', but there is no way back, so:
 
 ### History
 
+**2022-09-03  V1.09**
+- Change the way items are pushed
+- Add "Flow Limiter" mode to TA4 pump and TA4 pusher
+
 **2022-06-06  V1.08**
 - Native support for the mod Beduino added
 
diff --git a/techage/basic_machines/consumer.lua b/techage/basic_machines/consumer.lua
index ff2eb18..1268d6e 100644
--- a/techage/basic_machines/consumer.lua
+++ b/techage/basic_machines/consumer.lua
@@ -230,6 +230,8 @@ function techage.register_consumer(base_name, inv_name, tiles, tNode, validState
 				on_metadata_inventory_put = tNode.on_metadata_inventory_put,
 				on_metadata_inventory_take = tNode.on_metadata_inventory_take,
 				ta_rotate_node = tNode.ta_rotate_node,
+				ta3_formspec = stage == 3 and tNode.ta3_formspec,
+				ta4_formspec = stage == 4 and tNode.ta4_formspec,
 
 				paramtype = tNode.paramtype,
 				paramtype2 = "facedir",
@@ -271,6 +273,8 @@ function techage.register_consumer(base_name, inv_name, tiles, tNode, validState
 				on_metadata_inventory_put = tNode.on_metadata_inventory_put,
 				on_metadata_inventory_take = tNode.on_metadata_inventory_take,
 				ta_rotate_node = tNode.ta_rotate_node,
+				ta3_formspec = stage == 3 and tNode.ta3_formspec,
+				ta4_formspec = stage == 4 and tNode.ta4_formspec,
 
 				paramtype = tNode.paramtype,
 				paramtype2 = "facedir",
diff --git a/techage/basic_machines/distributor.lua b/techage/basic_machines/distributor.lua
index 66dd51c..44785e9 100644
--- a/techage/basic_machines/distributor.lua
+++ b/techage/basic_machines/distributor.lua
@@ -277,10 +277,17 @@ local function push_item(pos, base_filter, itemstack, num_items, nvm)
 		num_of_trials = num_of_trials + 1
 		local push_dir = filter[idx]
 		local num_to_push = math.min(amount, num_items - num_pushed)
-		if techage.push_items(pos, push_dir, itemstack:peek_item(num_to_push)) then
-			num_pushed = num_pushed + num_to_push
-			nvm.port_counter[push_dir] = (nvm.port_counter[push_dir] or 0) + num_to_push
+		local leftover = techage.push_items(pos, push_dir, itemstack:peek_item(num_to_push))
+		local pushed
+		if not leftover then
+			pushed = 0
+		elseif leftover ~= true then
+			pushed = num_to_push - leftover:get_count()
+		else -- leftover == true
+			pushed = num_to_push
 		end
+		num_pushed = num_pushed + pushed
+		nvm.port_counter[push_dir] = (nvm.port_counter[push_dir] or 0) + pushed
 		-- filter start offset
 		idx = idx + 1
 		if idx > num_ports then
diff --git a/techage/basic_machines/itemsource.lua b/techage/basic_machines/itemsource.lua
index ae28a40..cb93602 100644
--- a/techage/basic_machines/itemsource.lua
+++ b/techage/basic_machines/itemsource.lua
@@ -73,11 +73,17 @@ minetest.register_node("techage:itemsource", {
 		local stack = inv:get_stack('main', 1)
 		if stack:get_count() > 0 then
 			local push_dir = meta:get_int("push_dir")
-			if techage.push_items(pos, push_dir, stack) then
-				local cnt = meta:get_int("counter") + stack:get_count()
-				meta:set_int("counter", cnt)
-				meta:set_string("infotext", "Techage Item Source: "..cnt)
+			local leftover = techage.push_items(pos, push_dir, stack)
+			local pushed
+			if not leftover then
+				pushed = 0
+			elseif leftover ~= true then
+				pushed = stack:get_count() - leftover:get_count()
+			else -- leftover == true
+				pushed = stack:get_count()
 			end
+			meta:set_int("counter", pushed)
+			meta:set_string("infotext", "Techage Item Source: "..pushed)
 		end
 		return true
 	end,
diff --git a/techage/basic_machines/pusher.lua b/techage/basic_machines/pusher.lua
index bc5d147..70883b7 100644
--- a/techage/basic_machines/pusher.lua
+++ b/techage/basic_machines/pusher.lua
@@ -34,6 +34,16 @@ local STANDBY_TICKS = 2
 local COUNTDOWN_TICKS = 4
 local CYCLE_TIME = 2
 
+local WRENCH_MENU = {
+	{
+		type = "number",
+		name = "limit",
+		label = S("Number of items"),
+		tooltip = S("Number of items that are allowed to be pushed"),
+		default = "0",
+	},
+}
+
 local function ta4_formspec(self, pos, nvm)
 	if CRD(pos).stage == 4 then -- TA4 node?
 		return "size[8,7.2]"..
@@ -42,7 +52,8 @@ local function ta4_formspec(self, pos, nvm)
 			default.gui_slots..
 			"box[0,-0.1;7.8,0.5;#c6e8ff]"..
 			"label[3,-0.1;"..minetest.colorize("#000000", S("Pusher")).."]"..
-			techage.question_mark_help(8, S("Optionally configure\nthe pusher with one item"))..
+			techage.question_mark_help(7.5, S("Optionally configure\nthe pusher with one item"))..
+			techage.wrench_image(7.4, -0.05) ..
 			"list[context;main;3.5,0.8;1,1;]"..
 			"image_button[3.5,2;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
 			"tooltip[3.5,2;1,1;"..self:get_state_tooltip(nvm).."]"..
@@ -87,30 +98,71 @@ local function allow_metadata_inventory_take(pos, listname, index, stack, player
 	return 0
 end
 
-local function pushing(pos, crd, meta, nvm)
-	local pull_dir = meta:get_int("pull_dir")
-	local push_dir = meta:get_int("push_dir")
-	local num = nvm.item_count or nvm.num_items or crd.num_items
+local function set_limit(pos, nvm, val)
+	val = tonumber(val) or 0
+	if val > 0 then
+		nvm.limit = val
+		nvm.num_items = 0
+		M(pos):set_int("limit", val)
+	else
+		nvm.limit = nil
+		nvm.num_items = nil
+		M(pos):set_string("limit", "")
+	end
+end
+
+-- Function returns the number of pushed items
+local function push(pos, crd, meta, nvm, pull_dir, push_dir, num)
 	local items = techage.pull_items(pos, pull_dir, num, nvm.item_name)
 	if items ~= nil then
-		if techage.push_items(pos, push_dir, items) ~= true then
+		local taken = items:get_count()
+		local leftover = techage.push_items(pos, push_dir, items)
+		if not leftover then
 			-- place item back
 			techage.unpull_items(pos, pull_dir, items)
 			crd.State:blocked(pos, nvm)
-			return
+			return 0
+		elseif leftover ~= true then
+			-- place item back
+			techage.unpull_items(pos, pull_dir, leftover)
+			crd.State:blocked(pos, nvm)
+			return taken - leftover:get_count()
 		end
-		if nvm.item_count then  -- remote job?
-			nvm.item_count = nil
-			nvm.item_name = nil
-			crd.State:stop(pos, nvm)
-			local number = M(pos):get_string("node_number")
-			techage.send_single(number, nvm.rmt_num, "off")
-		else
-			crd.State:keep_running(pos, nvm, COUNTDOWN_TICKS)
-		end
-		return
+		return taken
 	end
 	crd.State:idle(pos, nvm)
+	return 0
+end
+
+local function pushing(pos, crd, meta, nvm)
+	local pull_dir = meta:get_int("pull_dir")
+	local push_dir = meta:get_int("push_dir")
+
+	if not nvm.limit then
+		local num = nvm.item_count or nvm.num_items or crd.num_items
+		num = push(pos, crd, meta, nvm, pull_dir, push_dir, num)
+		if num > 0 then
+			if nvm.item_count then
+				nvm.item_count = nvm.item_count - num
+				if nvm.item_count <= 0 then
+					crd.State:stop(pos, nvm)
+					nvm.item_count = nil
+				end
+			end
+			crd.State:keep_running(pos, nvm, COUNTDOWN_TICKS)
+		end
+	elseif nvm.num_items < nvm.limit then
+		local num = math.min(crd.num_items, nvm.limit - nvm.num_items)
+		num = push(pos, crd, meta, nvm, pull_dir, push_dir, num)
+		if num > 0 then
+			nvm.num_items = nvm.num_items + num
+			if nvm.num_items >= nvm.limit then
+				crd.State:stop(pos, nvm)
+			else
+				crd.State:keep_running(pos, nvm, COUNTDOWN_TICKS)
+			end
+		end
+	end
 end
 
 local function keep_running(pos, elapsed)
@@ -180,6 +232,18 @@ local function can_start(pos, nvm, state)
 	return true
 end
 
+local function ta_after_formspec(pos, fields, playername)
+	local nvm = techage.get_nvm(pos)
+	set_limit(pos, nvm, fields.limit)
+end
+
+local function on_state_change(pos, old_state, new_state)
+	if old_state == techage.STOPPED and new_state == techage.RUNNING then
+		local nvm = techage.get_nvm(pos)
+		set_limit(pos, nvm,  M(pos):get_int("limit"))
+	end
+end
+
 local function config_item(pos, payload)
 	if type(payload) == "string" then
 		if payload == "" then
@@ -247,43 +311,56 @@ local tubing = {
 	is_pusher = true, -- is a pulling/pushing node
 
 	on_recv_message = function(pos, src, topic, payload)
-		if topic == "pull" then
+		if topic == "pull" then -- Deprecated command, use config/limit/start instead
 			local nvm = techage.get_nvm(pos)
 			CRD(pos).State:stop(pos, nvm)
 			nvm.item_count = math.min(config_item(pos, payload), 12)
 			nvm.rmt_num = src
 			CRD(pos).State:start(pos, nvm)
 			return true
-		elseif topic == "config" then
+		elseif topic == "config" then  -- Set item type
 			local nvm = techage.get_nvm(pos)
 			CRD(pos).State:stop(pos, nvm)
 			config_item(pos, payload)
-			CRD(pos).State:start(pos, nvm)
 			return true
+		elseif topic == "limit" then  -- Set push limit
+			local nvm = techage.get_nvm(pos)
+			CRD(pos).State:stop(pos, nvm)
+			set_limit(pos, nvm, payload)
+			return true
+		elseif topic == "count" then  -- Get number of push items
+			local nvm = techage.get_nvm(pos)
+			return nvm.num_items or 0
 		else
 			return CRD(pos).State:on_receive_message(pos, topic, payload)
 		end
 	end,
 	on_beduino_receive_cmnd = function(pos, src, topic, payload)
-		if topic == 64 then -- Start pusher
-			local nvm = techage.get_nvm(pos)
-			CRD(pos).State:stop(pos, nvm)
-			nvm.item_count = math.min(config_item(pos, payload), 12)
-			nvm.rmt_num = src
-			CRD(pos).State:start(pos, nvm)
-			return 0
-		elseif topic == 65 then -- Config Pusher
+		if topic == 65 then  -- Set item type
 			local nvm = techage.get_nvm(pos)
 			CRD(pos).State:stop(pos, nvm)
 			config_item(pos, payload)
-			CRD(pos).State:start(pos, nvm)
+			return 0
+		elseif topic == 68 then  -- Set push limit
+			local nvm = techage.get_nvm(pos)
+			CRD(pos).State:stop(pos, nvm)
+			set_limit(pos, nvm, payload[1])
 			return 0
 		else
+			local nvm = techage.get_nvm(pos)
+			if nvm.limit then
+				nvm.num_items = 0
+			end
 			return CRD(pos).State:on_beduino_receive_cmnd(pos, topic, payload)
 		end
 	end,
 	on_beduino_request_data = function(pos, src, topic, payload)
-		return CRD(pos).State:on_beduino_request_data(pos, topic, payload)
+		if topic == 150 then  -- Get number of pushed items
+			local nvm = techage.get_nvm(pos)
+			return 0, {nvm.num_items or 0}
+		else
+			return CRD(pos).State:on_beduino_request_data(pos, topic, payload)
+		end
 	end,
 }
 
@@ -294,6 +371,7 @@ local node_name_ta2, node_name_ta3, node_name_ta4 =
 		formspec = ta4_formspec,
 		tubing = tubing,
 		can_start = can_start,
+		on_state_change = on_state_change,
 		after_place_node = function(pos, placer)
 			local meta = M(pos)
 			local node = minetest.get_node(pos)
@@ -321,6 +399,8 @@ local node_name_ta2, node_name_ta3, node_name_ta4 =
 		node_timer = keep_running,
 		on_rotate = screwdriver.disallow,
 		tubelib2_on_update2 = tubelib2_on_update2,
+		ta4_formspec = WRENCH_MENU,
+		ta_after_formspec = ta_after_formspec,
 
 		groups = {choppy=2, cracky=2, crumbly=2},
 		is_ground_content = false,
diff --git a/techage/basic_machines/ta4_chest.lua b/techage/basic_machines/ta4_chest.lua
index 49bdb83..cb5b7e9 100644
--- a/techage/basic_machines/ta4_chest.lua
+++ b/techage/basic_machines/ta4_chest.lua
@@ -133,7 +133,7 @@ local function doesItemStackMatchNvmStack(itemstack, nvmstack)
 
 	-- The following seems to be the most reliable approach to compare meta.
 	local nvm_meta = ItemStack():get_meta()
-	nvm_meta:from_table(minetest.deserialize(nvmstack.meta))
+	nvm_meta:from_table(minetest.deserialize(nvmstack.meta or ""))
 	if not nvm_meta:equals(itemstack:get_meta()) then
 		return false, "Mismatching meta"
 	end
@@ -197,7 +197,7 @@ local function take_from_chest(pos, idx, output_stack, max_total_count, keep_ass
 		count = count,
 		wear = nvm_stack.wear,
 	}))
-	output_stack:get_meta():from_table(minetest.deserialize(nvm_stack.meta))
+	output_stack:get_meta():from_table(minetest.deserialize(nvm_stack.meta or ""))
 	nvm_stack.count = nvm_stack.count - count
 	if nvm_stack.count == 0 then
 		gen_stack(nvm.inventory or {}, idx)
@@ -210,21 +210,14 @@ local function tube_add_to_chest(pos, input_stack)
 	local nvm = techage.get_nvm(pos)
 	nvm.inventory = nvm.inventory or {}
 
-	-- Backup some values needed for restoring the old
-	-- state if items can't fully be added to chest.
-	local orig_count = input_stack:get_count()
-	local backup = table.copy(nvm.inventory)
-
 	for idx = 1,8 do
 		input_stack:take_item(add_to_chest(pos, input_stack, idx))
 	end
 
 	if input_stack:get_count() > 0 then
-		nvm.inventory = backup -- Restore old nvm inventory
-		input_stack:set_count(orig_count) -- Restore input_stack
-		return false -- No items were added to chest
+		return input_stack -- Not all items were added to chest
 	else
-		return true -- Items were added successfully
+		return true -- All items were added
 	end
 end
 
diff --git a/techage/basis/command.lua b/techage/basis/command.lua
index 11246a5..1ae41e8 100644
--- a/techage/basis/command.lua
+++ b/techage/basis/command.lua
@@ -460,7 +460,7 @@ function techage.push_items(pos, out_dir, stack, idx)
 		minetest.add_item(npos, stack)
 		return true
 	end
-	return false
+	return stack
 end
 
 -- Check for recursion and too long distances
@@ -485,7 +485,7 @@ function techage.safe_push_items(pos, out_dir, stack, idx)
 			end
 		end
 	end
-	return false
+	return stack
 end
 
 function techage.unpull_items(pos, out_dir, stack)
@@ -496,37 +496,6 @@ function techage.unpull_items(pos, out_dir, stack)
 	return false
 end
 
--------------------------------------------------------------------
--- Client side Push/Pull item functions for hopper like nodes
--- (nodes with no tube support)
--------------------------------------------------------------------
-
-function techage.neighbour_pull_items(pos, out_dir, num)
-	local res, npos, in_dir, name = get_next_node(pos, out_dir)
-	if res and NodeDef[name] and NodeDef[name].on_pull_item then
-		return NodeDef[name].on_pull_item(npos, in_dir, num)
-	end
-end
-
-function techage.neighbour_push_items(pos, out_dir, stack)
-	local res, npos, in_dir, name = get_next_node(pos, out_dir)
-	if res and NodeDef[name] and NodeDef[name].on_push_item then
-		return NodeDef[name].on_push_item(npos, in_dir, stack)
-	elseif name == "air" then
-		minetest.add_item(npos, stack)
-		return true
-	end
-	return false
-end
-
-function techage.neighbour_unpull_items(pos, out_dir, stack)
-	local res, npos, in_dir, name = get_next_node(pos, out_dir)
-	if res and NodeDef[name] and NodeDef[name].on_unpull_item then
-		return NodeDef[name].on_unpull_item(npos, in_dir, stack)
-	end
-	return false
-end
-
 -------------------------------------------------------------------
 -- Server side helper functions
 -------------------------------------------------------------------
@@ -554,23 +523,33 @@ function techage.get_items(pos, inv, listname, num)
 	return nil
 end
 
--- Put the given stack into the given ItemList.
--- Function returns false if ItemList is full.
+-- Put the given stack into the given ItemList/inventory.
+-- Function returns:
+--  - true, if all items are moved
+--  - false, if no item is moved
+--  - leftover, if less than all items are moved
+-- (true/false is the legacy mode and can't be removed)
 function techage.put_items(inv, listname, item, idx)
+	local leftover
 	if idx and inv and idx <= inv:get_size(listname) then
 		local stack = inv:get_stack(listname, idx)
-		if stack:item_fits(item) then
-			stack:add_item(item)
-			inv:set_stack(listname, idx, stack)
-			return true
-		end
+		leftover = stack:add_item(item)
+		inv:set_stack(listname, idx, stack)
+	elseif inv then
+		leftover = inv:add_item(listname, item)
 	else
-		if inv and inv:room_for_item(listname, item) then
-			inv:add_item(listname, item)
-			return true
-		end
+		return false
 	end
-	return false
+
+	local cnt = leftover:get_count()
+	if cnt == item:get_count() then
+		return false
+	elseif cnt == 0 then
+		return true
+	else
+		return leftover
+	end
+
 end
 
 -- Return "full", "loaded", or "empty" depending
diff --git a/techage/basis/conf_inv.lua b/techage/basis/conf_inv.lua
index f64aca6..1117ada 100644
--- a/techage/basis/conf_inv.lua
+++ b/techage/basis/conf_inv.lua
@@ -76,16 +76,22 @@ function inv_lib.allow_conf_inv_move(pos, from_list, from_index, to_list, to_ind
 end
 
 function inv_lib.put_items(pos, inv, listname, item, stacks, idx)
+	local name = item:get_name()
+	local count = item:get_count()
 	for _, i in ipairs(stacks or {}) do
 		if not idx or idx == i then
 			local stack = inv:get_stack(listname, i)
-			if stack:item_fits(item) then
-				stack:add_item(item)
-				inv:set_stack(listname, i, stack)
+			local leftover = stack:add_item({name = name, count = count})
+			count = leftover:get_count()
+			inv:set_stack(listname, i, stack)
+			if count == 0 then
 				return true
 			end
 		end
 	end
+	if count > 0 then
+		return ItemStack({name = name, count = count})
+	end
 	return false
 end
 
diff --git a/techage/basis/fly_lib.lua b/techage/basis/fly_lib.lua
index c05d36a..00ec087 100644
--- a/techage/basis/fly_lib.lua
+++ b/techage/basis/fly_lib.lua
@@ -75,14 +75,15 @@ function flylib.distance(v)
 	return math.abs(v.x) + math.abs(v.y) + math.abs(v.z)
 end
 
-function flylib.to_vector(s)
+function flylib.to_vector(s, max_dist)
 	local x,y,z = unpack(string.split(s, ","))
+	x = tonumber(x) or 0
+	y = tonumber(y) or 0
+	z = tonumber(z) or 0
 	if x and y and z then
-		return {
-			x=tonumber(x) or 0,
-			y=tonumber(y) or 0,
-			z=tonumber(z) or 0,
-		}
+		if not max_dist or (math.abs(x) + math.abs(y) + math.abs(z)) <= max_dist then
+			return {x = x, y = y, z = z}
+		end
 	end
 end
 
@@ -101,7 +102,7 @@ function flylib.to_path(s, max_dist)
 					tPath = tPath or {}
 					tPath[#tPath + 1] = v
 				else
-					return tPath, S("Error: Max. length of the flight route exceeded !!")
+					return tPath, S("Error: Max. length of the flight route exceeded by @1 blocks !!", dist - max_dist)
 				end
 			else
 				return tPath, S("Error: Invalid path !!")
@@ -676,11 +677,11 @@ local function move_nodes2(pos, meta, lpos1, line, max_speed, height)
 
 	local lpos2 = {}
 	for idx = 1, #lpos1 do
-		
+
 		local pos1 = lpos1[idx]
 		local pos2 = vector.add(lpos1[idx], line)
 		lpos2[idx] = pos2
-		
+
 		if not minetest.is_protected(pos1, owner) and not minetest.is_protected(pos2, owner) then
 			if is_simple_node(pos1) and is_valid_dest(pos2) then
 				move_node(pos, idx, pos1, {line}, max_speed, height, false, false)
@@ -700,7 +701,7 @@ local function move_nodes2(pos, meta, lpos1, line, max_speed, height)
 			return false, lpos1
 		end
 	end
-	
+
 	meta:set_string("status", "")
 	return true, lpos2
 end
@@ -794,14 +795,14 @@ end
 function flylib.exchange_node(pos, name, param2)
 	local meta = M(pos)
 	local move_block
-	
+
 	-- consider stored "objects"
 	if meta:contains("ta_move_block") then
 		move_block = meta:get_string("ta_move_block")
 	end
-	
+
 	minetest.swap_node(pos, {name = name, param2 = param2})
-	
+
 	if move_block then
 		meta:set_string("ta_move_block", move_block)
 	end
@@ -810,14 +811,14 @@ end
 function flylib.remove_node(pos)
 	local meta = M(pos)
 	local move_block
-	
+
 	-- consider stored "objects"
 	if meta:contains("ta_move_block") then
 		move_block = meta:get_string("ta_move_block")
 	end
-	
+
 	minetest.remove_node(pos)
-	
+
 	if move_block then
 		local node = minetest.deserialize(move_block)
 		minetest.add_node(pos, node)
diff --git a/techage/basis/lib.lua b/techage/basis/lib.lua
index 6311bc5..899cc41 100644
--- a/techage/basis/lib.lua
+++ b/techage/basis/lib.lua
@@ -288,7 +288,7 @@ function techage.can_dig_node(name, ndef)
 	if SimpleNodes[name] ~= nil then
 		return SimpleNodes[name]
 	end
-	
+
 	if ndef.groups and ndef.groups.techage_door == 1 then
 		SimpleNodes[name] = true
 		return true
diff --git a/techage/basis/node_store.lua b/techage/basis/node_store.lua
index dfa44f2..f22c554 100644
--- a/techage/basis/node_store.lua
+++ b/techage/basis/node_store.lua
@@ -97,8 +97,8 @@ minetest.register_globalstep(function(dtime)
 	SystemTime = SystemTime + dtime
 	local key = pop()
 	if key and NvmStore[key] then
---		minetest.log("warning", 
---			string.format("[TA Storage] SystemTime = %.3f, #JobQueue = %d, in_use = %s", 
+--		minetest.log("warning",
+--			string.format("[TA Storage] SystemTime = %.3f, #JobQueue = %d, in_use = %s",
 --			SystemTime, last - first, NvmStore[key].in_use))
 		local t = minetest.get_us_time()
 		if NvmStore[key].in_use then
diff --git a/techage/basis/nodedata_meta.lua b/techage/basis/nodedata_meta.lua
index 875ce6d..7141a41 100644
--- a/techage/basis/nodedata_meta.lua
+++ b/techage/basis/nodedata_meta.lua
@@ -65,6 +65,7 @@ function api.store_mapblock_data(key, mapblock_data)
 			if pos then
 				item._POS_ = nil
 				local data = serialize(item)
+				item._POS_ = pos
 				local meta = M(pos)
 				meta:set_string("ta_data", data)
 				meta:mark_as_private("ta_data")
diff --git a/techage/basis/nodedata_sqlite.lua b/techage/basis/nodedata_sqlite.lua
index e5c15b5..dcc9cfa 100644
--- a/techage/basis/nodedata_sqlite.lua
+++ b/techage/basis/nodedata_sqlite.lua
@@ -72,7 +72,7 @@ end
 local api = {}
 
 function api.store_mapblock_data(key, mapblock_data)
-	if use_marshal then 
+	if use_marshal then
 		set_block(key, marshal.encode(mapblock_data))
 	else
 		set_block(key, minetest.serialize(mapblock_data))
diff --git a/techage/basis/recipe_lib.lua b/techage/basis/recipe_lib.lua
index 4d98ee7..e583c71 100644
--- a/techage/basis/recipe_lib.lua
+++ b/techage/basis/recipe_lib.lua
@@ -169,6 +169,14 @@ function techage.recipes.get_recipe(name)
 	return NormalizedRecipes[name]
 end
 
+function techage.recipes.set_recipe(pos, rtype, idx)
+	local nvm = techage.get_nvm(pos)
+	if not nvm.running then
+		local recipes = Recipes[rtype] or {}
+		idx = tonumber(idx) or 1
+		nvm.recipe_idx = range(idx, 1, #recipes)
+	end
+end
 
 function techage.recipes.get_default_group_item_name(item_name)
 	if item_name and item_name:sub(1, 6) == "group:" then
diff --git a/techage/basis/submenu.lua b/techage/basis/submenu.lua
index 1aa0d63..8bd88dc 100644
--- a/techage/basis/submenu.lua
+++ b/techage/basis/submenu.lua
@@ -16,8 +16,8 @@ local S = techage.S
 techage.menu = {}
 
 local function index(list, x)
-	for idx, v in ipairs(list) do
-		if v == x then return idx end
+	for idx, v in ipairs(list or {}) do
+		if tostring(v) == x then return idx end
 	end
 	return nil
 end
@@ -99,7 +99,6 @@ local function generate_formspec_substring(pos, meta, form_def, player_name)
 				end
 				tbl[#tbl+1] = "label[4.75," .. offs .. ";" .. val .. "]"
 			elseif elem.type == "dropdown" then
-				local l = elem.choices:split(",")
 				if nvm.running or techage.is_running(nvm) then
 					local val = elem.default or ""
 					if meta:contains(elem.name) then
@@ -120,7 +119,13 @@ local function generate_formspec_substring(pos, meta, form_def, player_name)
 					if meta:contains(elem.name) then
 						val = meta:get_string(elem.name) or ""
 					end
-					local idx = index(l, val) or 1
+					local idx
+					if elem.values then
+						idx = index(elem.values, val) or 1
+					else
+						local l = elem.choices:split(",")
+						idx = index(l, val) or 1
+					end
 					tbl[#tbl+1] = "dropdown[4.72," .. (offs) .. ";5.5,1.4;" .. elem.name .. ";" .. elem.choices .. ";" .. idx .. "]"
 				end
 			elseif elem.type == "items" then  -- inventory
@@ -137,9 +142,9 @@ local function generate_formspec_substring(pos, meta, form_def, player_name)
 	return player_inv_needed, table.concat(tbl, "")
 end
 
-local function value_check(elem, value)
+local function value_check(elem, value, player_name)
 	if elem.check then
-		return elem.check(value)
+		return elem.check(value, player_name)
 	end
 	return value ~= nil
 end
@@ -159,7 +164,7 @@ local function evaluate_data(pos, meta, form_def, fields, player_name)
 						meta:set_string(elem.name, "")
 					elseif fields[elem.name]:find("^[%d ]+$") then
 						local val = tonumber(fields[elem.name])
-						if value_check(elem, val) then
+						if value_check(elem, val, player_name) then
 							meta:set_int(elem.name, val)
 							--print("set_int", elem.name, val)
 						else
@@ -173,7 +178,8 @@ local function evaluate_data(pos, meta, form_def, fields, player_name)
 				if fields[elem.name] then
 					if fields[elem.name] == "" then
 						meta:set_string(elem.name, "")
-					elseif fields[elem.name]:find("^[%d ]+$") and value_check(elem, fields[elem.name]) then
+					elseif fields[elem.name]:find("^[%d ]+$") and
+							value_check(elem, fields[elem.name], player_name) then
 						meta:set_string(elem.name, fields[elem.name])
 					else
 						res = false
@@ -184,7 +190,7 @@ local function evaluate_data(pos, meta, form_def, fields, player_name)
 					meta:set_string(elem.name, "")
 				elseif fields[elem.name] then
 					local val = tonumber(fields[elem.name])
-					if val and value_check(elem, val) then
+					if val and value_check(elem, val, player_name) then
 						meta:set_string(elem.name, val)
 					else
 						res = false
@@ -194,7 +200,7 @@ local function evaluate_data(pos, meta, form_def, fields, player_name)
 				if fields[elem.name] == ""then
 					meta:set_string(elem.name, "")
 				elseif fields[elem.name] then
-					if value_check(elem, fields[elem.name]) then
+					if value_check(elem, fields[elem.name], player_name) then
 						meta:set_string(elem.name, fields[elem.name])
 					else
 						res = false
@@ -202,7 +208,14 @@ local function evaluate_data(pos, meta, form_def, fields, player_name)
 				end
 			elseif elem.type == "dropdown" then
 				if fields[elem.name] ~= nil then
-					meta:set_string(elem.name, fields[elem.name])
+					if elem.values then
+						local l = elem.choices:split(",")
+						local idx = index(l, fields[elem.name]) or 1
+						local text = elem.values[idx]
+						meta:set_string(elem.name, text)
+					else
+						meta:set_string(elem.name, fields[elem.name])
+					end
 				end
 			elseif elem.type == "items" and player_name then
 				local inv_name = minetest.formspec_escape(player_name) .. "_techage_wrench_menu"
diff --git a/techage/chemistry/ta4_doser.lua b/techage/chemistry/ta4_doser.lua
index 316a3c6..ca99fb9 100644
--- a/techage/chemistry/ta4_doser.lua
+++ b/techage/chemistry/ta4_doser.lua
@@ -358,7 +358,12 @@ liquid.register_nodes({"techage:ta4_doser", "techage:ta4_doser_on"}, Pipe, "pump
 
 techage.register_node({"techage:ta4_doser", "techage:ta4_doser_on"}, {
 	on_recv_message = function(pos, src, topic, payload)
-		return State:on_receive_message(pos, topic, payload)
+		if topic == "recipe" then
+			techage.recipes.set_recipe(pos, "ta4_doser", payload)
+			return true
+		else
+			return State:on_receive_message(pos, topic, payload)
+		end
 	end,
 	on_beduino_receive_cmnd = function(pos, src, topic, payload)
 		return State:on_beduino_receive_cmnd(pos, topic, payload)
diff --git a/techage/chemistry/ta4_reactor.lua b/techage/chemistry/ta4_reactor.lua
index 2736091..6b2108d 100644
--- a/techage/chemistry/ta4_reactor.lua
+++ b/techage/chemistry/ta4_reactor.lua
@@ -168,6 +168,28 @@ minetest.register_node("techage:ta4_reactor", {
 	sounds = default.node_sound_metal_defaults(),
 })
 
+techage.register_node({"techage:ta4_reactor"}, {
+	on_inv_request = function(pos, in_dir, access_type)
+		local meta = minetest.get_meta(pos)
+		return meta:get_inventory(), "main"
+	end,
+	on_pull_item = function(pos, in_dir, num, item_name)
+		local meta = minetest.get_meta(pos)
+		local inv = meta:get_inventory()
+		return techage.get_items(pos, inv, "main", num)
+	end,
+	on_push_item = function(pos, in_dir, stack)
+		local meta = minetest.get_meta(pos)
+		local inv = meta:get_inventory()
+		return techage.put_items(inv, "main", stack)
+	end,
+	on_unpull_item = function(pos, in_dir, stack)
+		local meta = minetest.get_meta(pos)
+		local inv = meta:get_inventory()
+		return techage.put_items(inv, "main", stack)
+	end,
+})
+
 minetest.register_craft({
 	output = 'techage:ta4_reactor',
 	recipe = {
diff --git a/techage/coal_power_station/firebox.lua b/techage/coal_power_station/firebox.lua
index 1b732cd..ebf716f 100644
--- a/techage/coal_power_station/firebox.lua
+++ b/techage/coal_power_station/firebox.lua
@@ -86,7 +86,7 @@ minetest.register_node("techage:coalfirebox", {
 
 	after_place_node = function(pos, placer)
 		if firebox.is_free_position(pos, placer:get_player_name()) then
-			techage.add_node(pos, "techage:coalfirebox")
+			techage.add_node(pos, "techage:coalfirebox", true)
 			local nvm = techage.get_nvm(pos)
 			nvm.running = false
 			nvm.burn_cycles = 0
diff --git a/techage/coal_power_station/oilfirebox.lua b/techage/coal_power_station/oilfirebox.lua
index b2cc309..7fd7ad2 100644
--- a/techage/coal_power_station/oilfirebox.lua
+++ b/techage/coal_power_station/oilfirebox.lua
@@ -88,7 +88,7 @@ minetest.register_node("techage:oilfirebox", {
 
 	after_place_node = function(pos, placer)
 		if firebox.is_free_position(pos, placer:get_player_name()) then
-			techage.add_node(pos, "techage:oilfirebox")
+			techage.add_node(pos, "techage:oilfirebox", true)
 			local nvm = techage.get_nvm(pos)
 			nvm.running = false
 			nvm.burn_cycles = 0
diff --git a/techage/doc/manual_DE.lua b/techage/doc/manual_DE.lua
index de9f2d1..1268fc7 100644
--- a/techage/doc/manual_DE.lua
+++ b/techage/doc/manual_DE.lua
@@ -229,6 +229,7 @@ techage.manual_DE.aTitel = {
   "3,TA4 Elektronikfabrik / Electronic Fab",
   "3,TA4 Injektor / Injector",
   "3,TA4 Recycler",
+  "3,TA4 Item Durchlaufbegrenzer / Item Flow Limiter",
   "1,TA5: Zukunft",
   "2,Energiequellen",
   "3,TA5 Fusionsreaktor",
@@ -1042,7 +1043,7 @@ techage.manual_DE.aText = {
   "\n"..
   "\n",
   "Der Taster/Schalter sendet 'on'/'off' Kommandos zu den Blöcken\\, die über die Nummern konfiguriert wurden.\n"..
-  "Der Taster/Schalter kann als Taster (button) oder Schalter (switch) konfiguriert werden. Wird er als Taster konfiguriert\\, so kann die Zeit zwischen den 'on' und 'off' Kommandos eingestellt werden.\n"..
+  "Der Taster/Schalter kann als Taster (button) oder Schalter (switch) konfiguriert werden. Wird er als Taster konfiguriert\\, so kann die Zeit zwischen den 'on' und 'off' Kommandos eingestellt werden. Mit der Betriebsart \"on button\" wird nur ein 'on' und kein 'off' Kommandos gesendet.\n"..
   "\n"..
   "Über die Checkbox \"public\" kann eingestellt werden\\, ob den Taster von jedem (gesetzt)\\, oder nur vom Besitzer selbst (nicht gesetzt) genutzt werden darf.\n"..
   "\n"..
@@ -1125,7 +1126,9 @@ techage.manual_DE.aText = {
   "\n"..
   "\n",
   "Die Signallampe kann mit 'on'/'off' Kommando ein- bzw. ausgeschaltet werden. Diese Lampe braucht keinen Strom und\n"..
-  "kann mit der Spritzpistole aus der Mod \"Unified Dyes\" farbig gemacht werden.\n"..
+  "kann mit der Spritzpistole aus der Mod \"Unified Dyes\" und über Lua/Beduino Kommandos eingefärbt werden.\n"..
+  "\n"..
+  "Mit dem Chat-Kommando '/ta_color' wird die Farbpalette mit den Werten für die Lua/Beduino Kommandos angezeigt und mit '/ta_send color <num>' kann die Farbe geändert werden.\n"..
   "\n"..
   "\n"..
   "\n",
@@ -1630,7 +1633,7 @@ techage.manual_DE.aText = {
   "\n"..
   "\n",
   "",
-  "Beim TA4 Taster/Schalter hat sich nur das Aussehen geändert. Die Funktionalität ist gleich wie beim TA3 Taster/Schalter.\n"..
+  "Beim TA4 Taster/Schalter hat sich nur das Aussehen geändert. Die Funktionalität ist gleich wie beim TA3 Taster/Schalter. Mit dem Schraubenschlüssel-Menü können die Daten aber nachträglich geändert werden.\n"..
   "\n"..
   "\n"..
   "\n",
@@ -1696,6 +1699,8 @@ techage.manual_DE.aText = {
   "\n"..
   "Das 'goto' Kommando wird nur angenommen\\, wenn der Sequenzer gestoppt ist.\n"..
   "\n"..
+  "Über das Gabelschlüssel-Menü kann beim Sequenzer die Zykluszeit (normal: 100 ms) geändert werden. \n"..
+  "\n"..
   "\n"..
   "\n",
   "",
@@ -1705,7 +1710,7 @@ techage.manual_DE.aText = {
   "Anleitung:\n"..
   "\n"..
   "  - Controller setzen und die Blöcke\\, die bewegt werden sollen\\, über das Menü an-trainieren (Es können bis zu 16 Blöcke an-trainiert werden)\n"..
-  "  - die \"Flugstrecke\" muss über eine x\\,y\\,z Angabe (relativ) eingegeben werden (die maximale Distanz beträgt 100 m)\n"..
+  "  - die \"Flugstrecke\" muss über eine x\\,y\\,z Angabe (relativ) eingegeben werden (die maximale Distanz (x+y+z) beträgt 200 m)\n"..
   "  - mit den Menü-Tasten \"Bewege A-B\" sowie \"Bewege B-A\" kann die Bewegung getestet werden\n"..
   "  - man kann auch durch Wände oder andere Blöcke fliegen\n"..
   "  - auch die Zielposition für die Blöcke kann belegt sein. Die Blöcke werden in diesem Falle \"unsichtbar\" gespeichert. Dies ist für Schiebetüren und ähnliches gedacht\n"..
@@ -1892,7 +1897,13 @@ techage.manual_DE.aText = {
   "\n",
   "Siehe TA3 Pumpe.\n"..
   "\n"..
-  "Die TA4 Pumpe pumpt 8 Einheiten Flüssigkeit alle zwei Sekunden. Zusätzlich unterstützt die Pumpe das Kommando 'flowrate'. Damit kann die Gesamtdurchflussmenge durch die Pumpe abgefragt werden.\n"..
+  "Die TA4 Pumpe pumpt 8 Einheiten Flüssigkeit alle zwei Sekunden. \n"..
+  "\n"..
+  "In der Betriebsart \"Durchflussbegrenzer\" kann die Anzahl der Einheiten\\, die von der Pumpe gepumpt werden\\, begrenzt werden. Die Betriebsart Durchflussbegrenzer kann über das Gabelschlüssel-Menü aktiviert werden\\, indem im Menü die Anzahl an Einheiten konfiguriert wird. Sobald die  konfigurierte Anzahl an Einheiten gepumpt wurden\\, schaltet sich die Pumpe ab. Wird die Pumpe wieder eingeschaltet\\, pumpt sie wieder die konfigurierte Anzahl an Einheiten und schaltet sich dann ab.\n"..
+  "\n"..
+  "Der Durchflussbegrenzer kann auch per Lua- oder Beduino Controller konfiguriert und gestartet werden.\n"..
+  "\n"..
+  "Zusätzlich unterstützt die Pumpe das Kommando 'flowrate'. Damit kann die Gesamtdurchflussmenge durch die Pumpe abgefragt werden.\n"..
   "\n"..
   "\n"..
   "\n",
@@ -1918,10 +1929,14 @@ techage.manual_DE.aText = {
   "Die Funktion entspricht grundsätzlich der von TA2/TA3. Zusätzlich kann aber über ein Menü konfiguriert werden\\, welche Gegenstände aus einer TA4 Kiste geholt und weiter transportiert werden sollen.\n"..
   "Die Verarbeitungsleistung beträgt 12 Items alle 2 s\\, sofern auf beiden Seiten TA4 Röhren verwendet werden. Anderenfalls sind es nur 6 Items alle 2 s.\n"..
   "\n"..
-  "Der TA4 Schieber besitzt zwei zusätzliche Kommandos für den Lua Controller:\n"..
+  "In der Betriebsart \"Durchlaufbegrenzer\" kann die Anzahl der Items\\, die von dem Schieber bewegt werden\\, begrenzt werden. Die Betriebsart Durchlaufbegrenzer kann über das Gabelschlüssel-Menü aktiviert werden\\, indem im Menü die Anzahl an Items konfiguriert wird. Sobald die  konfigurierte Anzahl an Items bewegt wurden\\, schaltet sich der Schieber ab. Wird der Schieber wieder eingeschaltet\\, bewegt er wieder die konfigurierte Anzahl an Items und schaltet sich dann ab.\n"..
+  "\n"..
+  "Der TA4 Schieber kann auch per Lua- oder Beduino Controller konfiguriert und gestartet werden.\n"..
+  "\n"..
+  "Hier die zusätzlichen Kommandos für den Lua Controller:\n"..
   "\n"..
   "  - 'config' dient zur Konfiguration des Schiebers\\, analog zum manuellen Konfiguration über das Menü.\nBeispiel:  '$send_cmnd(1234\\, \"config\"\\, \"default:dirt\")'\nMit '$send_cmnd(1234\\, \"config\"\\, \"\")' wird die Konfiguration gelöscht\n"..
-  "  - 'pull' dient zum Absetzen eines Auftrags an den Schieber:\nBeispiel: '$send_cmnd(1234\\, \"pull\"\\, \"default:dirt 8\")'\nAls Nummer sind Werte von 1 bis 12 zulässig. Danach geht der Schieber wieder in den 'stopped' Mode und sendet ein \"off\" Kommando zurück an den Sender des \"pull\" Kommandos.\n"..
+  "  - 'limit' dient zum Setzen der Anzahl der Items für die Durchlaufbegrenzer Betriebsart:\nBeispiel: '$send_cmnd(1234\\, \"init\"\\, 7)'\n"..
   "\n"..
   "\n"..
   "\n",
@@ -2007,6 +2022,10 @@ techage.manual_DE.aText = {
   "\n"..
   "\n"..
   "\n",
+  "Die Funktion entspricht der von TA3.  \n"..
+  "\n"..
+  "\n"..
+  "\n",
   "Maschinen zur Überwindung von Raum und Zeit\\, neue Energiequellen und andere Errungenschaften prägen dein Leben. \n"..
   "\n"..
   "Für die Herstellung und Nutzung von TA5 Maschinen und Blöcken sind Erfahrungspunkte (experience points) notwendig. Diese können nur über den Teilchenbeschleuniger aus TA4 erarbeitet werden.\n"..
@@ -2358,6 +2377,7 @@ techage.manual_DE.aItemName = {
   "ta4_electronicfab",
   "ta4_injector",
   "ta4_recycler",
+  "ta4_item_flow_limiter_pas",
   "techage_ta5",
   "",
   "",
@@ -2615,6 +2635,7 @@ techage.manual_DE.aPlanTable = {
   "",
   "",
   "",
+  "",
   "ta5_fusion_reactor",
   "",
   "",
diff --git a/techage/doc/manual_EN.lua b/techage/doc/manual_EN.lua
index 52553da..7f582b8 100644
--- a/techage/doc/manual_EN.lua
+++ b/techage/doc/manual_EN.lua
@@ -135,6 +135,7 @@ techage.manual_EN.aTitel = {
   "3,TA3 Gravel Rinser",
   "3,TA3 Grinder",
   "3,TA3 Injector",
+  "3,TA3 Item Flow Limiter",
   "2,Tools",
   "3,Techage Info Tool",
   "3,TechAge Programmer",
@@ -229,6 +230,7 @@ techage.manual_EN.aTitel = {
   "3,TA4 Electronic Fab",
   "3,TA4 Injector",
   "3,TA4 Recycler",
+  "3,TA4 Item Flow Limiter",
   "1,TA5: Future",
   "2,Energy Sources",
   "3,TA5 Fusion Reactor",
@@ -1044,7 +1046,7 @@ techage.manual_EN.aText = {
   "\n"..
   "\n",
   "The button/switch sends 'on' / 'off' commands to the blocks that have been configured via the numbers.\n"..
-  "The button/switch can be configured as a button or a switch. If it is configured as a button\\, the time between the 'on' and 'off' commands can be set.\n"..
+  "The button/switch can be configured as a button or a switch. If it is configured as a button\\, the time between the 'on' and 'off' commands can be set. With the operating mode \"on button\" only an 'on' and no 'off' command is sent.\n"..
   "\n"..
   "The checkbox \"public\" can be used to set whether the button can be used by everyone (set) or only by the owner himself (not set).\n"..
   "\n"..
@@ -1126,8 +1128,9 @@ techage.manual_EN.aText = {
   "\n"..
   "\n"..
   "\n",
-  "The signal lamp can be switched on or off with the 'on' / 'off' command. This lamp does not need electricity and\n"..
-  "can be colored with the airbrush tool of the mod Unified Dyes.\n"..
+  "The signal lamp can be switched on or off with the 'on' / 'off' command. This lamp does not need electricity and can be colored with the airbrush tool from the mod Unified Dyes\" and via Lua/Beduino commands.\n"..
+  "\n"..
+  "With the chat command '/ta_color' the color palette with the values for the Lua/Beduino commands is displayed and with '/ta_send color <num>' the color can be changed.\n"..
   "\n"..
   "\n"..
   "\n",
@@ -1264,6 +1267,16 @@ techage.manual_EN.aText = {
   "\n"..
   "\n"..
   "\n",
+  "The Flow Limiter limits the number of items that can be pushed through by using a slider. This allows the number of items that are put into an oven\\, for example\\, to be precisely adapted to the recipe.\n"..
+  "\n"..
+  "The Flow Limiter must be configured via the menu and then started. If the configured number of items has been passed\\, the block switches off. The next time the Flow Limiter is switched on\\, it again transmits the configured number of items.\n"..
+  "\n"..
+  "*Note: The Flow Limiter must be placed behind the pusher.*\n"..
+  "\n"..
+  "The Flow Limiter can also be configured and started using a Lua or Beduino controller.\n"..
+  "\n"..
+  "\n"..
+  "\n",
   "",
   "The Techage Info Tool (open-ended wrench) has several functions. It shows the time\\, position\\, temperature and biome when an unknown block is clicked on.\n"..
   "If you click on a TechAge block with command interface\\, all available data will be shown (see also \"Logic / switching blocks\").\n"..
@@ -1626,7 +1639,7 @@ techage.manual_EN.aText = {
   "\n"..
   "\n",
   "",
-  "Only the appearance of the TA4 button/switch has changed. The functionality is the same as with the TA3 button/switch.\n"..
+  "Only the appearance of the TA4 button/switch has changed. The functionality is the same as with the TA3 button/switch. With the wrench menu\\, however\\, the data can be changed later.\n"..
   "\n"..
   "\n"..
   "\n",
@@ -1692,6 +1705,8 @@ techage.manual_EN.aText = {
   "\n"..
   "The 'goto' command is only accepted when the sequencer is stopped.\n"..
   "\n"..
+  "The cycle time (default: 100 ms) can be changed for the sequencer via the open-end wrench menu.\n"..
+  "\n"..
   "\n"..
   "\n",
   "",
@@ -1701,7 +1716,7 @@ techage.manual_EN.aText = {
   "Instructions:\n"..
   "\n"..
   "  - Set the controller and train the blocks to be moved via the menu (up to 16 blocks can be trained)\n"..
-  "  - the \"flight route\" must be entered via an x\\, y\\, z specification (relative) (the maximum distance is 100 m)\n"..
+  "  - the \"flight route\" must be entered via an x\\, y\\, z specification (relative) (the maximum distance (x+y+z) is 200 m)\n"..
   "  - The movement can be tested with the menu buttons \"Move A-B\" and \"Move B-A\"\n"..
   "  - you can also fly through walls or other blocks\n"..
   "  - The target position for the blocks can also be occupied. In this case\\, the blocks are saved \"invisibly\". This is intended for sliding doors and the like\n"..
@@ -1888,7 +1903,13 @@ techage.manual_EN.aText = {
   "\n",
   "See TA3 pump.\n"..
   "\n"..
-  "The TA4 pump pumps 8 units of liquid every two seconds. The pump also supports the 'flowrate' command. This means that the total flow rate through the pump can be queried. \n"..
+  "The TA4 pump pumps 8 units of liquid every two seconds. \n"..
+  "\n"..
+  "In the \"Flow limiter\" mode\\, the number of units pumped by the pump can be limited. The flow limiter mode can be activated via the open-end wrench menu by configuring the number of units in the menu. Once the configured number of units have been pumped\\, the pump will turn off. When the pump is turned on again\\, it will pump the configured number of units again and then turn off.\n"..
+  "\n"..
+  "The flow limiter can also be configured and started using a Lua or Beduino controller.\n"..
+  "\n"..
+  "The pump also supports the 'flowrate' command. This allows the total flow rate through the pump to be queried.\n"..
   "\n"..
   "\n"..
   "\n",
@@ -1914,10 +1935,14 @@ techage.manual_EN.aText = {
   "The function basically corresponds to that of TA2 / TA3. In addition\\, a menu can be used to configure which objects should be taken from a TA4 chest and transported further.\n"..
   "The processing power is 12 items every 2 s\\, if TA4 tubes are used on both sides. Otherwise there are only 6 items every 2 s.\n"..
   "\n"..
-  "The TA4 pusher has two additional commands for the Lua controller:\n"..
+  "In the \"flow limiter\" mode\\, the number of items that are moved by the pusher can be limited. The flow limiter mode can be activated via the open-end wrench menu by configuring the number of items in the menu. As soon as the configured number of items have been moved\\, the pusher switches off. If the pusher is switched on again\\, it moves the configured number of items again and then switches off.\n"..
   "\n"..
-  "  - 'config' is used to configure the pusher\\, analogous to manual configuration via the menu.\nExample: '$send_cmnd(1234\\, \"config\"\\, \"default: dirt\")'\nWith '$send_cmnd(1234\\, \"config\"\\, \"\")' the configuration is deleted\n"..
-  "  - 'pull' is used to send an order to the pusher:\nExample: '$send_cmnd(1234\\, \"pull\"\\, \"default: dirt 8\")'\nValues ​​from 1 to 12 are permitted as numbers. Then the pusher goes back to 'stopped' mode and sends an\" off \"command back to the transmitter of the\" pull \"command.\n"..
+  "The TA4 pusher can also be configured and started using a Lua or Beduino controller.\n"..
+  "\n"..
+  "Here are the additional commands for the Lua controller:\n"..
+  "\n"..
+  "  - 'config' is used to configure the pusher\\, analogous to manual configuration via the menu.\n Example: '$send_cmnd(1234\\, \"config\"\\, \"default:dirt\")'\n With '$send_cmnd(1234\\, \"config\"\\, \"\")' the configuration is deleted\n"..
+  "  - 'limit' is used to set the number of items for the flow limiter mode:\n Example: '$send_cmnd(1234\\, \"init\"\\, 7)'\n"..
   "\n"..
   "\n"..
   "\n",
@@ -2004,6 +2029,10 @@ techage.manual_EN.aText = {
   "\n"..
   " \n"..
   "\n",
+  "The function corresponds to that of TA3.\n"..
+  "\n"..
+  "\n"..
+  "\n",
   "Machines to overcome space and time\\, new sources of energy and other achievements shape your life.\n"..
   "\n"..
   "Experience points are required for the manufacture and use of TA5 machines and blocks. These can only be worked out using the collider from TA4.\n"..
@@ -2259,6 +2288,7 @@ techage.manual_EN.aItemName = {
   "ta3_gravelrinser",
   "ta3_grinder",
   "ta3_injector",
+  "ta3_item_flow_limiter_pas",
   "",
   "ta3_end_wrench",
   "ta3_programmer",
@@ -2353,6 +2383,7 @@ techage.manual_EN.aItemName = {
   "ta4_electronicfab",
   "ta4_injector",
   "ta4_recycler",
+  "ta4_item_flow_limiter_pas",
   "techage_ta5",
   "",
   "",
@@ -2520,6 +2551,7 @@ techage.manual_EN.aPlanTable = {
   "",
   "",
   "",
+  "",
   "ta4_windturbine",
   "",
   "",
@@ -2609,6 +2641,7 @@ techage.manual_EN.aPlanTable = {
   "",
   "",
   "",
+  "",
   "ta5_fusion_reactor",
   "",
   "",
diff --git a/techage/furnace/firebox.lua b/techage/furnace/firebox.lua
index e3678db..03483bb 100644
--- a/techage/furnace/firebox.lua
+++ b/techage/furnace/firebox.lua
@@ -105,7 +105,7 @@ minetest.register_node("techage:furnace_firebox", {
 
 	on_construct = function(pos)
 		local nvm = techage.get_nvm(pos)
-		techage.add_node(pos, "techage:furnace_firebox")
+		techage.add_node(pos, "techage:furnace_firebox", true)
 		nvm.running = false
 		nvm.burn_cycles = 0
 		nvm.liquid = {}
diff --git a/techage/init.lua b/techage/init.lua
index 3863a85..b6d0287 100644
--- a/techage/init.lua
+++ b/techage/init.lua
@@ -36,8 +36,8 @@ elseif minetest.global_exists("lcdlib") and lcdlib.version < 1.01 then
 elseif minetest.global_exists("safer_lua") and safer_lua.version < 1.01 then
 	minetest.log("error", "[techage] Techage requires safer_lua version 1.01 or newer!")
 	return
-elseif minetest.global_exists("networks") and networks.version < 0.10 then
-	minetest.log("error", "[techage] Techage requires networks version 0.10 or newer!")
+elseif minetest.global_exists("networks") and networks.version < 0.12 then
+	minetest.log("error", "[techage] Techage requires networks version 0.12 or newer!")
 	return
 elseif minetest.global_exists("hyperloop") and hyperloop.version < 2.07 then
 	minetest.log("error", "[techage] Techage requires hyperloop version 2.07 or newer!")
diff --git a/techage/iron_age/gravelsieve.lua b/techage/iron_age/gravelsieve.lua
index 2ef5446..94aadf5 100644
--- a/techage/iron_age/gravelsieve.lua
+++ b/techage/iron_age/gravelsieve.lua
@@ -86,7 +86,7 @@ local function on_punch(pos, node, puncher, pointed_thing)
 		if inv:room_for_item("src", stack) then
 			inv:add_item("src", stack)
 			minetest.swap_node(pos, {name = "techage:sieve0"})
-			minetest.get_node_timer(pos):start(1)
+			minetest.get_node_timer(pos):start(1.5)
 			local w = puncher:get_wielded_item()
 			if not(minetest.setting_getbool("creative_mode")) then
 				w:take_item(1)
@@ -163,7 +163,7 @@ techage.register_node({"techage:sieve0", "techage:sieve1", "techage:sieve2", "te
 		local inv = meta:get_inventory()
 		if inv:room_for_item("src", stack) then
 			inv:add_item("src", stack)
-			minetest.get_node_timer(pos):start(1)
+			minetest.get_node_timer(pos):start(1.5)
 			return true
 		end
 		return false
diff --git a/techage/iron_age/hopper.lua b/techage/iron_age/hopper.lua
index 6f6db01..745b301 100644
--- a/techage/iron_age/hopper.lua
+++ b/techage/iron_age/hopper.lua
@@ -22,7 +22,7 @@ minetest.register_alias("techage:hopper_ta1", "minecart:hopper")
 minecart.register_inventory(
 	{
 		"techage:chest_ta2", "techage:chest_ta3", "techage:chest_ta4",
-		"techage:meltingpot", "techage:meltingpot_active",
+		"techage:meltingpot", "techage:meltingpot_active", "techage:ta4_reactor",
 	},
 	{
 		put = {
@@ -68,7 +68,7 @@ minecart.register_inventory(
 				local meta = minetest.get_meta(pos)
 				local inv = meta:get_inventory()
 				if inv:is_empty("src") then
-					minetest.get_node_timer(pos):start(1)
+					minetest.get_node_timer(pos):start(2)
 					return true
 				end
 			end,
diff --git a/techage/items/registered_nodes.lua b/techage/items/registered_nodes.lua
index bf29591..81d9aa9 100644
--- a/techage/items/registered_nodes.lua
+++ b/techage/items/registered_nodes.lua
@@ -67,4 +67,4 @@ techage.register_mobs_mods("mobf_trader")
 techage.register_mobs_mods("ts_vehicles_cars")
 
 -- Used as e.g. crane cable
-techage.register_simple_nodes({"techage:power_lineS"}, true)
\ No newline at end of file
+techage.register_simple_nodes({"techage:power_lineS"}, true)
diff --git a/techage/liquids/pump.lua b/techage/liquids/pump.lua
index 99f0b51..b56cf47 100644
--- a/techage/liquids/pump.lua
+++ b/techage/liquids/pump.lua
@@ -25,12 +25,21 @@ local COUNTDOWN_TICKS = 4
 local CYCLE_TIME = 2
 local CAPA = 4
 
-local WRENCH_MENU =	{{
-	type = "output",
-	name = "flowrate",
-	label = S("Total flow rate"),
-	tooltip = S("Total flow rate in liquid units"),
-}}
+local WRENCH_MENU = {
+	{
+		type = "output",
+		name = "flowrate",
+		label = S("Total flow rate"),
+		tooltip = S("Total flow rate in liquid units"),
+	},
+	{
+		type = "number",
+		name = "limit",
+		label = S("Number of units"),
+		tooltip = S("Number of liquid units that are allowed to be pumped"),
+		default = "0",
+	},
+}
 
 local State3 = techage.NodeStates:new({
 	node_name_passive = "techage:t3_pump",
@@ -48,11 +57,9 @@ local State4 = techage.NodeStates:new({
 	standby_ticks = STANDBY_TICKS,
 })
 
-local function pumping(pos, nvm, state, capa)
-	local mem = techage.get_mem(pos)
-	mem.dbg_cycles = (mem.dbg_cycles or 0) - 1
-	local outdir = M(pos):get_int("outdir")
-	local taken, name = liquid.take(pos, Pipe, Flip[outdir], nil, capa, mem.dbg_cycles > 0)
+-- Function returns the number of pumped units
+local function pump(pos, mem, nvm, state, outdir, units)
+	local taken, name = liquid.take(pos, Pipe, Flip[outdir], nil, units, mem.dbg_cycles > 0)
 	if taken > 0 then
 		local leftover = liquid.put(pos, Pipe, outdir, name, taken, mem.dbg_cycles > 0)
 		if leftover and leftover > 0 then
@@ -66,13 +73,39 @@ local function pumping(pos, nvm, state, capa)
 				state:blocked(pos, nvm)
 				return 0
 			end
-			state:keep_running(pos, nvm, COUNTDOWN_TICKS)
 			return taken - leftover
 		end
-		state:keep_running(pos, nvm, COUNTDOWN_TICKS)
 		return taken
+	else
+		state:idle(pos, nvm)
+		return 0
+	end
+end
+
+local function pumping(pos, nvm, state, capa)
+	local mem = techage.get_mem(pos)
+	mem.dbg_cycles = (mem.dbg_cycles or 0) - 1
+	local outdir = M(pos):get_int("outdir")
+
+	if not nvm.limit then
+		local num = pump(pos, mem, nvm, state, outdir, capa)
+		if num > 0 then
+			state:keep_running(pos, nvm, COUNTDOWN_TICKS)
+		end
+		return num
+	elseif nvm.num_items < nvm.limit then
+		local num = math.min(capa, nvm.limit - nvm.num_items)
+		num = pump(pos, mem, nvm, state, outdir, num)
+		if num > 0 then
+			nvm.num_items = nvm.num_items + num
+			if nvm.num_items >= nvm.limit then
+				state:stop(pos, nvm)
+			else
+				state:keep_running(pos, nvm, COUNTDOWN_TICKS)
+			end
+		end
+		return num
 	end
-	state:idle(pos, nvm)
 	return 0
 end
 
@@ -119,6 +152,14 @@ local function on_rightclick(pos, node, clicker)
 	elseif node.name == "techage:t4_pump" then
 		local mem = techage.get_mem(pos)
 		mem.dbg_cycles = 5
+		local val = M(pos):get_int("limit")
+		if val and val > 0 then
+			nvm.limit = val
+			nvm.num_items = 0
+		else
+			nvm.limit = nil
+			nvm.num_items = nil
+		end
 		State4:start(pos, nvm)
 	elseif node.name == "techage:t4_pump_on" then
 		State4:stop(pos, nvm)
@@ -277,7 +318,24 @@ techage.register_node({"techage:t3_pump", "techage:t3_pump_on"}, {
 
 techage.register_node({"techage:t4_pump", "techage:t4_pump_on"}, {
 	on_recv_message = function(pos, src, topic, payload)
-		if topic == "flowrate" then
+		if topic == "limit" then  -- Set pump limit
+			local nvm = techage.get_nvm(pos)
+			State4:stop(pos, nvm)
+			local val = tonumber(payload) or 0
+			if val and val > 0 then
+				nvm.limit = val
+				nvm.num_items = 0
+				M(pos):set_int("limit", val)
+			else
+				nvm.limit = nil
+				nvm.num_items = nil
+				M(pos):set_string("limit", "")
+			end
+			return true
+		elseif topic == "count" then  -- Get number of pumped units
+			local nvm = techage.get_nvm(pos)
+			return nvm.num_items or 0
+		elseif topic == "flowrate" then  -- Get total number of pumped units
 			local nvm = techage.get_nvm(pos)
 			return nvm.flowrate or 0
 		else
@@ -285,12 +343,34 @@ techage.register_node({"techage:t4_pump", "techage:t4_pump_on"}, {
 		end
 	end,
 	on_beduino_receive_cmnd = function(pos, src, topic, payload)
-		return State4:on_beduino_receive_cmnd(pos, topic, payload)
+		if topic == 69 and payload then  -- Set pump limit
+			local nvm = techage.get_nvm(pos)
+			State4:stop(pos, nvm)
+			if payload[1] > 0 then
+				nvm.limit = payload[1]
+				nvm.num_items = 0
+				M(pos):set_int("limit", payload[1])
+			else
+				nvm.limit = nil
+				nvm.num_items = nil
+				M(pos):set_string("limit", "")
+			end
+			return 0
+		else
+			local nvm = techage.get_nvm(pos)
+			if nvm.limit then
+				nvm.num_items = 0
+			end
+			return State4:on_beduino_receive_cmnd(pos, topic, payload)
+		end
 	end,
 	on_beduino_request_data = function(pos, src, topic, payload)
-		if topic == 137 then  -- Total Flow Rate
+		if topic == 137 then  -- Get total number of pumped units
 			local nvm = techage.get_nvm(pos)
 			return 0, {nvm.flowrate or 0}
+		elseif topic == 151 then  -- Get number of pumped units
+			local nvm = techage.get_nvm(pos)
+			return 0, {nvm.num_items or 0}
 		else
 			return State4:on_beduino_request_data(pos, topic, payload)
 		end
diff --git a/techage/locale/techage.de.tr b/techage/locale/techage.de.tr
index 6ce7269..22a49a6 100644
--- a/techage/locale/techage.de.tr
+++ b/techage/locale/techage.de.tr
@@ -114,7 +114,11 @@ TA3 Booster=TA3 Gebläse
 ### button.lua ###
 
 Access:=Zugriff:
+Button or switch=Taster oder Schalter
+Change the block name (infotext)=Ändere den Blocknamen
 Command to be sent=Zu sendender Befehl 
+Destination block number(s)=Zielblocknummer
+Infotext=Infotext
 TA3 Button/Switch=TA3 Taster/Schalter
 TA4 Button/Switch=TA4 Schalter/Taster
 
@@ -122,7 +126,11 @@ TA4 Button/Switch=TA4 Schalter/Taster
 ### button_2x.lua ###
 ### button_4x.lua ###
 
+Access=Zugriff
+Button protection=Tastenschutz
 Command=Kommando
+Number=Nummer
+Type=Typ
 
 ### button.lua ###
 ### cart_detector.lua ###
@@ -154,14 +162,10 @@ TA4 2x Button=TA4 2x Taster
 ### button_2x.lua ###
 ### button_4x.lua ###
 
-Access=Zugriff
-Button protection=Tastenschutz
 Command to be sent (ignored for switches)=Zu sendender Befehl (wird für Schalter ignoriert)
 Destination block number=Zielblocknummer 
 Label for the button=Beschriftung für die Taste
 Momentary button or on/off switch=Taster oder Ein-/Ausschalter
-Number=Nummer
-Type=Typ
 
 ### button_2x.lua ###
 ### button_4x.lua ###
@@ -446,7 +450,7 @@ Firebox=Feuerkasten
 ### fly_lib.lua ###
 
 Destination position is protected=Zielposition ist geschützt
-Error: Max. length of the flight route exceeded !!=Fehler: Max. Flugstreckenlänge überschritten !!
+Error: Max. length of the flight route exceeded by @1 blocks !!=Fehler: max. Länge der Flugstrecke um @1 Blöcke überschritten !!
 No valid destination position=Keine gültige Zielposition
 No valid node at the start position=Kein gültiger Block an der Startposition
 Start position is protected=Startposition ist geschützt
@@ -460,7 +464,6 @@ Error: Invalid path !!=Fehler: Ungültiger Pfad !!
 
 Error: Recording is missing !!=Fehler: Aufzeichnung fehlt !!
 Flight route (A to B)=Flug Route (A nach B)
-Move=Bewege
 See chat output=Siehe chat Ausgabe
 TA5 Fly Controller=TA5 Flug Controller
 Test=Test
@@ -480,6 +483,7 @@ Store=Speichern
 Click on all blocks that shall be moved=Klicke auf alle Blöcke, die verschoben werden sollen
 Maximum Speed=Maximalgeschwindigkeit
 Maximum speed for moving blocks=Maximale Geschwindigkeit für bewegliche Blöcke
+Move=Bewege
 Move A-B=Bewege A-B
 Move B-A=Bewege B-A
 Move block height=Move Block Höhe
@@ -495,7 +499,6 @@ TA2 Flywheel=TA2 Schwungrad
 
 Area already loaded or max. number of Forceload Blocks reached!=Bereich bereits geladen oder maximale Anzahl von Forceload Blöcken erreicht!
 List of your Forceload Blocks:=Liste der Forceload Blöcke
-Priv missing=Rechte fehlen
 Punch the block to make the area visible.=Schlage auf den Bock um den Bereich anzuzeigen.
 Show all forceload blocks in a 64x64x64 range=Zeige alle Forceload Blöcke im Umkreis von 64x64x64 Blöcken
 Techage Forceload Block=Techage Forceload Block
@@ -870,15 +873,27 @@ TA1 Pine Wood Board=TA1 Kiefernholzbrett
 
 TA4 Streetlamp Solar Cell=TA4 Straßenlampen-Solarzelle
 
+### minichest.lua ###
+
+Test Chest=
+
+### minitank.lua ###
+
+Test Mini Tank=
+
 ### movecontroller.lua ###
 
 Error: Invalid distance !!=Fehler: Ungültige Entfernung !!
 Handover to A=Übergabe an A
 Handover to B=Übergabe an B
+Move distance=Entfernung
 Move distance (A to B)=Entfernung (A nach B)
 Number of the next movecontroller=Nummer des nächsten Move Controllers
 Number of the previous movecontroller=Nummer des vorhergehenden Move Controllers
 Object offset=Objekt Offset
+Operational mode=Betriebsmodus
+Reset=Rücksetzen
+Switch to the remote controlled 'move xyz' mode=Wechseln in den ferngesteuerten 'move xyz'-Modus
 TA4 Move Controller=TA4 Move Controller
 Y-offset for non-player objects like vehicles (-0.5 to 0.5)=Y-Offset für Nicht-Spieler Objekte wie Fahrzeuge (-0.5 bis 0.5)
 
@@ -1010,6 +1025,8 @@ Allow to dig/place Techage power lines nearby power poles=Erlaubt TODO
 
 ### pump.lua ###
 
+Number of liquid units that are allowed to be pumped=Anzahl der Flüssigkeitseinheiten, die gepumpt werden dürfen
+Number of units=Anzahl der Einheiten
 TA3 Pump=TA3 Pumpe
 TA4 Pump=TA4 Pumpe
 
@@ -1029,7 +1046,9 @@ no oil=Kein Öl
 
 ### pusher.lua ###
 
-Optionally configure@nthe pusher with one item=Der Schieber kann optional@nmit einem Gegenstand@nkonfiguriert werden
+Number of items=Anzahl der Elemente
+Number of items that are allowed to be pushed=Anzahl der Elemente, die verschoben werden dürfen
+Optionally configure@nthe pusher with one item=Der Schieber kann optional@nmit einem Elemente@nkonfiguriert werden
 Pusher=Schieber
 
 ### quarry.lua ###
@@ -1083,6 +1102,8 @@ Biome=Biom
 Node owner=Blockbesitzer
 Position=Position
 Position temperature=Positionstemperatur
+Pump connected to no/empty tank(s).=Pumpe an keine/leere Tank(s) angeschlossen.
+Pump connected to tank(s) with: @1=Pumpe an Tank(s) angeschlossen mit: @1
 TechAge Info Tool (use @= read status info)=TechAge Info Werkzeug
 TechAge Repair Kit=TechAge Reparaturset
 
@@ -1120,6 +1141,7 @@ stopped=gestoppt
 ### sequencer2.lua ###
 
  - 'goto <num>'  (jump to another line)@n= - 'goto <num>'  (springe zu einer anderen Zeile)@n
+ - 'nop' (do nothing)@n= - 'nop' (mache nichts)@n
  - 'send <node num> <cmnd>' (techage command)@n= - 'send <node num> <cmnd>' (techage Kommando)@n
  - 'stop' (stop the execution)@n= - 'stop' (stoppe die Ausführung)@n
  - 1 corresponds to 100 ms@n= - 1 entspricht 100 ms@n
@@ -1152,7 +1174,7 @@ TA5 Fusion Reactor Shell=TA5 Fusionsreaktor Hülle
 
 TA4 Wind Turbine Signal Lamp=TA4 Windkraftanlagenlampe
 TechAge Signal Lamp=TechAge Signallampe
-TechAge Signal Lamp (can be colored)=TechAge Signallampe (kann gefärbt werden)
+TechAge Signal Lamp 2 =TechAge Signallampe 2
 
 ### signallamp_2x.lua ###
 
@@ -1466,3 +1488,8 @@ Remove detector=Entferne Detektor
 TA4 Collider Detector Worker=TA4 Collider Detektor Worker
 [TA4] Detector is being built!=[TA4] Detektor wird gebaut! 
 [TA4] Detector is being removed!=[TA4] Detektor wird  entfernt!
+
+
+##### not used anymore #####
+
+Error: Max. length of the flight route exceeded !!=Fehler: Max. Flugstreckenlänge überschritten !!
diff --git a/techage/locale/template.txt b/techage/locale/template.txt
index 6067446..4a2676e 100644
--- a/techage/locale/template.txt
+++ b/techage/locale/template.txt
@@ -114,7 +114,11 @@ TA3 Booster=
 ### button.lua ###
 
 Access:=
+Button or switch=
+Change the node name (infotext)=
 Command to be sent=
+Destination block number(s)=
+Infotext=
 TA3 Button/Switch=
 TA4 Button/Switch=
 
@@ -122,7 +126,11 @@ TA4 Button/Switch=
 ### button_2x.lua ###
 ### button_4x.lua ###
 
+Access=
+Button protection=
 Command=
+Number=
+Type=
 
 ### button.lua ###
 ### cart_detector.lua ###
@@ -154,14 +162,10 @@ TA4 2x Button=
 ### button_2x.lua ###
 ### button_4x.lua ###
 
-Access=
-Button protection=
 Command to be sent (ignored for switches)=
 Destination block number=
 Label for the button=
 Momentary button or on/off switch=
-Number=
-Type=
 
 ### button_2x.lua ###
 ### button_4x.lua ###
@@ -446,7 +450,7 @@ Firebox=
 ### fly_lib.lua ###
 
 Destination position is protected=
-Error: Max. length of the flight route exceeded !!=
+Error: Max. length of the flight route exceeded by @1 blocks !!=
 No valid destination position=
 No valid node at the start position=
 Start position is protected=
@@ -460,7 +464,6 @@ Error: Invalid path !!=
 
 Error: Recording is missing !!=
 Flight route (A to B)=
-Move=
 See chat output=
 TA5 Fly Controller=
 Test=
@@ -480,6 +483,7 @@ Store=
 Click on all blocks that shall be moved=
 Maximum Speed=
 Maximum speed for moving blocks=
+Move=
 Move A-B=
 Move B-A=
 Move block height=
@@ -495,7 +499,6 @@ TA2 Flywheel=
 
 Area already loaded or max. number of Forceload Blocks reached!=
 List of your Forceload Blocks:=
-Priv missing=
 Punch the block to make the area visible.=
 Show all forceload blocks in a 64x64x64 range=
 Techage Forceload Block=
@@ -870,15 +873,27 @@ TA1 Pine Wood Board=
 
 TA4 Streetlamp Solar Cell=
 
+### minichest.lua ###
+
+Test Chest=
+
+### minitank.lua ###
+
+Test Mini Tank=
+
 ### movecontroller.lua ###
 
 Error: Invalid distance !!=
 Handover to A=
 Handover to B=
+Move distance=
 Move distance (A to B)=
 Number of the next movecontroller=
 Number of the previous movecontroller=
 Object offset=
+Operational mode=
+Reset=
+Switch to the remote controlled 'move xyz' mode=
 TA4 Move Controller=
 Y-offset for non-player objects like vehicles (-0.5 to 0.5)=
 
@@ -1010,6 +1025,8 @@ Allow to dig/place Techage power lines nearby power poles=
 
 ### pump.lua ###
 
+Number of liquid units that are allowed to be pumped=
+Number of units=
 TA3 Pump=
 TA4 Pump=
 
@@ -1029,6 +1046,8 @@ no oil=
 
 ### pusher.lua ###
 
+Number of items=
+Number of items that are allowed to be pushed=
 Optionally configure@nthe pusher with one item=
 Pusher=
 
@@ -1083,6 +1102,8 @@ Biome=
 Node owner=
 Position=
 Position temperature=
+Pump connected to no/empty tank(s).=
+Pump connected to tank(s) with: @1=
 TechAge Info Tool (use @= read status info)=
 TechAge Repair Kit=
 
@@ -1120,6 +1141,7 @@ stopped=
 ### sequencer2.lua ###
 
  - 'goto <num>'  (jump to another line)@n=
+ - 'nop' (do nothing)@n=
  - 'send <node num> <cmnd>' (techage command)@n=
  - 'stop' (stop the execution)@n=
  - 1 corresponds to 100 ms@n=
@@ -1152,7 +1174,7 @@ TA5 Fusion Reactor Shell=
 
 TA4 Wind Turbine Signal Lamp=
 TechAge Signal Lamp=
-TechAge Signal Lamp (can be colored)=
+TechAge Signal Lamp 2 =
 
 ### signallamp_2x.lua ###
 
diff --git a/techage/logic/button.lua b/techage/logic/button.lua
index c04d1f3..e677b29 100644
--- a/techage/logic/button.lua
+++ b/techage/logic/button.lua
@@ -20,6 +20,22 @@ local NDEF = function(pos) return (minetest.registered_nodes[techage.get_node_lv
 local logic = techage.logic
 
 local WRENCH_MENU = {
+	{
+		type = "dropdown",
+		choices = "switch,on button,button 1s,button 2s,button 4s,button 8s,button 16s,button 32s",
+		name = "type",
+		label = S("Type"),
+		tooltip = S("Button or switch"),
+		default = "1",
+	},
+	{
+		type = "numbers",
+		name = "numbers",
+		label = S("Number"),
+		tooltip = S("Destination block number(s)"),
+		default = "",
+		check = techage.check_numbers,
+	},
 	{
 		type = "ascii",
 		name = "command",
@@ -27,6 +43,21 @@ local WRENCH_MENU = {
 		tooltip = S("Command to be sent"),
 		default = "on",
 	},
+	{
+		type = "dropdown",
+		choices = "private,protected,public",
+		name = "access",
+		label = S("Access"),
+		tooltip = S("Button protection"),
+		default = "1",
+	},
+	{
+		type = "ascii",
+		name = "decription",
+		label = S("Infotext"),
+		tooltip = S("Change the block name (infotext)"),
+		default = "",
+	},
 }
 
 local function switch_on(pos)
@@ -56,7 +87,8 @@ local function switch_off(pos, is_button)
 		logic.swap_node(pos, "techage:ta4_button_off")
 	end
 	local meta = M(pos)
-	if not meta:contains("command") or meta:get_string("command") == "on" then
+	if meta:get_string("off_command") ~= "true" and 
+			(not meta:contains("command") or meta:get_string("command") == "on") then
 		logic.send_off(pos, M(pos))
 	end
 	if not is_button then
@@ -74,22 +106,18 @@ local function formspec(meta)
 	if idx == 0 then idx = 1 end
 	local access_idx = meta:get_string("public") == "true" and 3 or meta:get_string("protected") == "true" and 2 or 1
 	return "size[7.5,6]"..
-		"dropdown[0.2,0;3;type;switch,button 1s,button 2s,button 4s,button 8s,button 16s,button 32s;"..idx.."]"..
+		"dropdown[0.2,0;3;type;switch,on button,button 1s,button 2s,button 4s,button 8s,button 16s,button 32s;"..idx.."]"..
 		"field[0.5,2;7,1;numbers;"..S("Insert destination node number(s)")..";"..numbers.."]" ..
 		"label[0.2,3;"..S("Access:").."]"..
 		"dropdown[3,3;4;access;private,protected,public;"..access_idx.."]"..
 		"button_exit[2,4;3,1;exit;"..S("Save").."]"
 end
 
-local function on_receive_fields(pos, formname, fields, player)
-	if minetest.is_protected(pos, player:get_player_name()) then
-		return
-	end
+local function store_fields_data(pos, fields)
 	local meta = M(pos)
-	if not techage.check_numbers(fields.numbers, player:get_player_name()) then
-		return
-	end
 	meta:set_string("numbers", fields.numbers)
+	meta:set_string("off_command", "")
+	
 	if fields.access == "protected" then
 		meta:set_string("protected", "true")
 		meta:set_string("public", "")
@@ -106,28 +134,46 @@ local function on_receive_fields(pos, formname, fields, player)
 	if fields.type == "switch" then
 		meta:set_int("cycle_idx", 1)
 		cycle_time = 0
-	elseif fields.type == "button 1s" then
+	elseif fields.type == "on button" then
 		meta:set_int("cycle_idx", 2)
+		meta:set_string("off_command", "true")
+		cycle_time = 1
+	elseif fields.type == "button 1s" then
+		meta:set_int("cycle_idx", 3)
 		cycle_time = 1
 	elseif fields.type == "button 2s" then
-		meta:set_int("cycle_idx", 3)
+		meta:set_int("cycle_idx", 4)
 		cycle_time = 2
 	elseif fields.type == "button 4s" then
-		meta:set_int("cycle_idx", 4)
+		meta:set_int("cycle_idx", 5)
 		cycle_time = 4
 	elseif fields.type == "button 8s" then
-		meta:set_int("cycle_idx", 5)
+		meta:set_int("cycle_idx", 6)
 		cycle_time = 8
 	elseif fields.type == "button 16s" then
-		meta:set_int("cycle_idx", 6)
+		meta:set_int("cycle_idx", 7)
 		cycle_time = 16
 	elseif fields.type == "button 32s" then
-		meta:set_int("cycle_idx", 7)
+		meta:set_int("cycle_idx", 8)
 		cycle_time = 32
 	end
 	if cycle_time ~= nil then
 		meta:set_int("cycle_time", cycle_time)
 	end
+	meta:set_string("access", fields.access)
+	meta:set_string("type", fields.type)
+end
+
+local function on_receive_fields(pos, formname, fields, player)
+	if minetest.is_protected(pos, player:get_player_name()) then
+		return
+	end
+	if not techage.check_numbers(fields.numbers, player:get_player_name()) then
+		return
+	end
+	store_fields_data(pos, fields)
+
+	local meta = M(pos)
 	logic.infotext(meta, NDEF(pos).description)
 	if fields.exit then
 		meta:set_string("formspec", nil)
@@ -137,6 +183,16 @@ local function on_receive_fields(pos, formname, fields, player)
 	end
 end
 
+local function ta_after_formspec(pos, fields, playername)
+	store_fields_data(pos, fields)
+	local meta = M(pos)
+	if fields.decription ~= "" then
+		logic.infotext(meta, fields.decription)
+	else
+		logic.infotext(meta, NDEF(pos).description)
+	end
+end
+
 local function can_access(pos, player)
 	local meta = M(pos)
 	local public = meta:get_string("public") == "true"
@@ -269,6 +325,7 @@ minetest.register_node("techage:ta4_button_off", {
 	end,
 
 	ta4_formspec = WRENCH_MENU,
+	ta_after_formspec = ta_after_formspec,
 	on_receive_fields = on_receive_fields,
 	on_rightclick = on_rightclick_on,
 	techage_set_numbers = techage_set_numbers,
@@ -305,6 +362,8 @@ minetest.register_node("techage:ta4_button_on", {
 		},
 	},
 
+	ta4_formspec = WRENCH_MENU,
+	ta_after_formspec = ta_after_formspec,
 	on_rightclick = on_rightclick_off,
 	on_timer = switch_off,
 	on_rotate = screwdriver.disallow,
diff --git a/techage/logic/button_2x.lua b/techage/logic/button_2x.lua
index 82a1579..c79f2bd 100644
--- a/techage/logic/button_2x.lua
+++ b/techage/logic/button_2x.lua
@@ -55,6 +55,7 @@ local WRENCH_MENU = {
 		label = S("Number") .. " 1",
 		tooltip = S("Destination block number"),
 		default = "",
+		check = techage.check_numbers,
 	},
 	{
 		type = "ascii",
@@ -76,6 +77,7 @@ local WRENCH_MENU = {
 		label = S("Number") .. " 2",
 		tooltip = S("Destination block number"),
 		default = "",
+		check = techage.check_numbers,
 	},
 	{
 		type = "ascii",
diff --git a/techage/logic/button_4x.lua b/techage/logic/button_4x.lua
index 609cba1..9dbb892 100644
--- a/techage/logic/button_4x.lua
+++ b/techage/logic/button_4x.lua
@@ -59,6 +59,7 @@ local WRENCH_MENU = {
 		label = S("Number") .. " 1",
 		tooltip = S("Destination block number"),
 		default = "",
+		check = techage.check_numbers,
 	},
 	{
 		type = "ascii",
@@ -80,6 +81,7 @@ local WRENCH_MENU = {
 		label = S("Number") .. " 2",
 		tooltip = S("Destination block number"),
 		default = "",
+		check = techage.check_numbers,
 	},
 	{
 		type = "ascii",
@@ -101,6 +103,7 @@ local WRENCH_MENU = {
 		label = S("Number") .. " 3",
 		tooltip = S("Destination block number"),
 		default = "",
+		check = techage.check_numbers,
 	},
 	{
 		type = "ascii",
@@ -122,6 +125,7 @@ local WRENCH_MENU = {
 		label = S("Number") .. " 4",
 		tooltip = S("Destination block number"),
 		default = "",
+		check = techage.check_numbers,
 	},
 	{
 		type = "ascii",
diff --git a/techage/logic/detector.lua b/techage/logic/detector.lua
index a7f66d0..937b49a 100644
--- a/techage/logic/detector.lua
+++ b/techage/logic/detector.lua
@@ -249,12 +249,13 @@ minetest.register_craft({
 
 techage.register_node({"techage:ta3_detector_off", "techage:ta3_detector_on"}, {
 	on_push_item = function(pos, in_dir, stack)
-		if techage.safe_push_items(pos, in_dir, stack) then
+		local leftover = techage.safe_push_items(pos, in_dir, stack)
+		if leftover then
 			local inv =  minetest.get_inventory({type = "node", pos = pos})
 			if not inv or inv:is_empty("cfg") or inv:contains_item("cfg", ItemStack(stack:get_name())) then
 				switch_on(pos)
 			end
-			return true
+			return leftover
 		end
 		return false
 	end,
@@ -263,11 +264,19 @@ techage.register_node({"techage:ta3_detector_off", "techage:ta3_detector_on"}, {
 
 techage.register_node({"techage:ta4_detector_off", "techage:ta4_detector_on"}, {
 	on_push_item = function(pos, in_dir, stack)
-		if techage.safe_push_items(pos, in_dir, stack) then
-			switch_on(pos)
-			local nvm = techage.get_nvm(pos)
-			nvm.counter = (nvm.counter or 0) + stack:get_count()
-			return true
+		local leftover = techage.safe_push_items(pos, in_dir, stack)
+		if leftover then
+			local inv =  minetest.get_inventory({type = "node", pos = pos})
+			if not inv or inv:is_empty("cfg") or inv:contains_item("cfg", ItemStack(stack:get_name())) then
+				switch_on(pos)
+				local nvm = techage.get_nvm(pos)
+				if leftover == true then
+					nvm.counter = (nvm.counter or 0) + stack:get_count()
+				else
+					nvm.counter = (nvm.counter or 0) + stack:get_count() - leftover:get_count()
+				end
+			end
+			return leftover
 		end
 		return false
 	end,
diff --git a/techage/logic/sequencer2.lua b/techage/logic/sequencer2.lua
index 0151863..b861779 100644
--- a/techage/logic/sequencer2.lua
+++ b/techage/logic/sequencer2.lua
@@ -38,6 +38,27 @@ local HELP = S("Syntax:\n") ..
 	" [30] send 1234 b2a\n" ..
 	" [60] goto 1 -- keep going"
 
+local WRENCH_MENU = {
+	{
+		type = "dropdown",
+		choices = "100ms,200ms,500ms,1s,2s",
+		name = "cycletime",
+		label = S("Cycle time"),
+		tooltip = S("Timer cycle time (default: 100 ms)"),
+		default = "1",
+		values = {0.1, 0.2, 0.5, 1.0, 2.0}
+	},
+}
+
+local function cycle_time(pos)
+	local mem = techage.get_mem(pos)
+	if not mem.cycletime then
+		mem.cycletime = tonumber(M(pos):get_string("cycletime")) or 0.1
+	end
+	return mem.cycletime
+end
+
+
 local function strsplit(text)
 	text = text:gsub("\r\n", "\n")
 	text = text:gsub("\r", "\n")
@@ -169,12 +190,12 @@ local function formspec_help(meta)
 		"background[0.1,0.3;9.8,8.0;techage_form_mask.png]"
 end
 
-local function restart_timer(pos, time)
+local function restart_timer(pos, ticks)
 	local timer = minetest.get_node_timer(pos)
 	if timer:is_started() then
 		timer:stop()
 	end
-	timer:start(time / 10)
+	timer:start(ticks * cycle_time(pos))
 end
 
 local function node_timer(pos, elapsed)
@@ -240,7 +261,8 @@ local function on_receive_fields(pos, formname, fields, player)
 				meta:set_string("text", fields.text or "")
 				mem.code = nil
 				mem.idx = nil
-				minetest.get_node_timer(pos):start(0.5)
+				mem.cycletime = nil
+				restart_timer(pos, 1)
 				logic.infotext(meta, S("TA4 Sequencer"), S("running"))
 			end
 		end
@@ -274,6 +296,7 @@ minetest.register_node("techage:ta4_sequencer", {
 	end,
 
 	on_timer = node_timer,
+	ta4_formspec = WRENCH_MENU,
 
 	paramtype2 = "facedir",
 	groups = {choppy=2, cracky=2, crumbly=2},
@@ -300,7 +323,7 @@ techage.register_node({"techage:ta4_sequencer"}, {
 			local mem = techage.get_mem(pos)
 			nvm.running = true
 			mem.idx = tonumber(payload or 1) or 1
-			restart_timer(pos, 0.1)
+			restart_timer(pos, 1)
 			logic.infotext(M(pos), S("TA4 Sequencer"), S("running"))
 		elseif topic == "stop" or topic == "off" then
 			nvm.running = false
@@ -319,7 +342,7 @@ techage.register_node({"techage:ta4_sequencer"}, {
 				local mem = techage.get_mem(pos)
 				nvm.running = true
 				mem.idx = tonumber(payload or 1) or 1
-				restart_timer(pos, 0.1)
+				restart_timer(pos, 1)
 				logic.infotext(M(pos), S("TA4 Sequencer"), S("running"))
 				return 0
 			elseif payload[1] == 0 then
diff --git a/techage/logic/signallamp.lua b/techage/logic/signallamp.lua
index 982bde2..485fc83 100644
--- a/techage/logic/signallamp.lua
+++ b/techage/logic/signallamp.lua
@@ -8,7 +8,7 @@
 	AGPL v3
 	See LICENSE.txt for more information
 
-	Colored Signal Lamp (requires unifieddyes)
+	Colored Signal Lamps (with unifieddyes support)
 
 ]]--
 
@@ -20,127 +20,215 @@ local logic = techage.logic
 
 local COLORED = minetest.get_modpath("unifieddyes") and minetest.global_exists("unifieddyes")
 
+local LampsOff = {}
+local LampsOn = {}
 
-local function switch_on(pos, node)
-	node.name = "techage:signal_lamp_on"
-	minetest.swap_node(pos, node)
+local function switch_on(pos, node, player, color)
+	if player and minetest.is_protected(pos, player:get_player_name()) then
+		return
+	end
+	color = tonumber(color) or node.param2
+	if LampsOff[node.name] then
+		node.name = LampsOff[node.name]
+		node.param2 = color
+		minetest.swap_node(pos, node)
+	elseif LampsOn[node.name] and color ~= node.param2 then
+		node.param2 = color
+		minetest.swap_node(pos, node)
+	end
 end
 
-local function switch_off(pos, node)
-	node.name = "techage:signal_lamp_off"
-	minetest.swap_node(pos, node)
+local function switch_off(pos, node, player)
+	if player and minetest.is_protected(pos, player:get_player_name()) then
+		return
+	end
+	if LampsOn[node.name] then
+		node.name = LampsOn[node.name]
+		minetest.swap_node(pos, node)
+	end
 end
 
-minetest.register_node("techage:signal_lamp_off", {
-	description = S("TechAge Signal Lamp (can be colored)"),
-	tiles = {"techage_signal_lamp.png^[colorize:#000000:100"},
-	drawtype = "nodebox",
-    node_box = {
+local function register_signallamp(name, description, tiles_off, tiles_on, node_box)
+	LampsOff[name .. "_off"] = name .. "_on"
+	LampsOn[name .. "_on"] = name .. "_off"
+
+	minetest.register_node(name .. "_off", {
+		description = description,
+		tiles = tiles_off,
+		drawtype = node_box and "nodebox",
+		node_box = node_box,
+
+		after_place_node = function(pos, placer, itemstack, pointed_thing)
+			logic.after_place_node(pos, placer, name .. "_off", description)
+			logic.infotext(M(pos), description)
+			if COLORED then
+				unifieddyes.recolor_on_place(pos, placer, itemstack, pointed_thing)
+			else
+				local node = minetest.get_node(pos)
+				node.param2 = 35
+				minetest.swap_node(pos, node)
+			end
+		end,
+
+		on_rightclick = switch_on,
+
+		after_dig_node = function(pos, oldnode, oldmetadata, digger)
+			techage.remove_node(pos, oldnode, oldmetadata)
+			if COLORED then
+				unifieddyes.after_dig_node(pos, oldnode, oldmetadata, digger)
+			end
+		end,
+
+		on_construct = COLORED and unifieddyes.on_construct or nil,
+		on_dig = COLORED and unifieddyes.on_dig or nil,
+
+		paramtype = "light",
+		paramtype2 = "color",
+		--palette = "techage_palette256.png",
+		palette = COLORED and "unifieddyes_palette_extended.png" or "techage_palette256.png",
+		place_param2 = 240,
+		sunlight_propagates = true,
+		sounds = default.node_sound_glass_defaults(),
+		groups = {choppy=2, cracky=1, ud_param2_colorable = 1},
+		is_ground_content = false,
+		drop = name .. "_off"
+	})
+
+	minetest.register_node(name .. "_on", {
+		description = description,
+		tiles = tiles_on,
+		drawtype = node_box and "nodebox",
+		node_box = node_box,
+
+		on_rightclick = switch_off,
+
+		paramtype = "light",
+		paramtype2 = "color",
+		--palette = "techage_palette256.png",
+		palette = COLORED and "unifieddyes_palette_extended.png" or "techage_palette256.png",
+		groups = {choppy=2, cracky=1, not_in_creative_inventory=1, ud_param2_colorable = 1},
+
+		after_dig_node = function(pos, oldnode, oldmetadata, digger)
+			techage.remove_node(pos, oldnode, oldmetadata)
+			if COLORED then
+				unifieddyes.after_dig_node(pos, oldnode, oldmetadata, digger)
+			end
+		end,
+
+		on_dig = COLORED and unifieddyes.on_dig or nil,
+		light_source = 10,
+		is_ground_content = false,
+		drop = name .. "_off"
+	})
+
+	techage.register_node({name .. "_off", name .. "_on"}, {
+		on_recv_message = function(pos, src, topic, payload)
+			if topic == "on" then
+				local node = techage.get_node_lvm(pos)
+				switch_on(pos, node)
+				return true
+			elseif topic == "off" then
+				local node = techage.get_node_lvm(pos)
+				switch_off(pos, node)
+				return true
+			elseif topic == "color" then
+				local node = techage.get_node_lvm(pos)
+				switch_on(pos, node, nil, payload)
+				return true
+			else
+				return "unsupported"
+			end
+		end,
+		on_beduino_receive_cmnd = function(pos, src, topic, payload)
+			if topic == 1 and payload[1] == 1 then
+				local node = techage.get_node_lvm(pos)
+				switch_on(pos, node)
+				return 0
+			elseif topic == 1 and payload[1] == 0 then
+				local node = techage.get_node_lvm(pos)
+				switch_off(pos, node)
+				return 0
+			elseif topic == 70 then
+				local node = techage.get_node_lvm(pos)
+				switch_on(pos, node, nil, payload[1])
+				return 0
+			else
+				return 2
+			end
+		end,
+	})
+end
+
+minetest.register_chatcommand("ta_color", {
+	description = minetest.formspec_escape(
+			"Output the color palette and the numbers for Lua/Beduino color commands"),
+
+	func = function(name, param)
+		local tbl = {}
+		if COLORED then
+			tbl[1] = "size[14,7]"
+			tbl[2] = "background[0,0;14,7;unifieddyes_palette_extended.png]"
+			for i = 0, 10 do
+				local y = i * 0.64
+				tbl[#tbl + 1] = "label[0," .. y .. ";" .. (i * 24 +  0) .. "]"
+				tbl[#tbl + 1] = "label[7," .. y .. ";" .. (i * 24 + 12) .. "]"
+			end
+		else
+			tbl[1] = "size[10,7.5]"
+			tbl[2] = "background[0,0;10,7.5;techage_palette256.png]"
+			for i = 0, 13 do
+				local y = i * 0.5
+				tbl[#tbl + 1] = "label[0," .. y .. ";" .. (i * 18 + 0) .. "]"
+				tbl[#tbl + 1] = "label[5," .. y .. ";" .. (i * 18 + 9) .. "]"
+			end
+		end
+		minetest.show_formspec(name, ";techage:color_form", table.concat(tbl, ""))
+		return true
+    end
+})
+
+-- Register callback
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+    if formname ~= "techage:color_form" then
+        return false
+    end
+    return true
+end)
+
+
+register_signallamp("techage:signal_lamp",
+	S("TechAge Signal Lamp"),
+	{"techage_signal_lamp.png^[colorize:#000000:80"},
+	{"techage_signal_lamp.png"},
+	{
 		type = "fixed",
 		fixed = {
 			{-6/16, -6/16, -6/16,  6/16, 6/16, 6/16},
 			{-4/16, -10/16, -4/16,  4/16, -6/16, 4/16},
-		},
-	},
+		}
+	}
+)
 
-	after_place_node = function(pos, placer, itemstack, pointed_thing)
-		logic.after_place_node(pos, placer, "techage:signal_lamp_off", S("TechAge Signal Lamp"))
-		logic.infotext(M(pos), S("TechAge Signal Lamp"))
-		if COLORED then
-			unifieddyes.recolor_on_place(pos, placer, itemstack, pointed_thing)
-		end
-	end,
-
-	on_rightclick = switch_on,
-
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		techage.remove_node(pos, oldnode, oldmetadata)
-		if COLORED then
-			unifieddyes.after_dig_node(pos, oldnode, oldmetadata, digger)
-		end
-	end,
-
-	on_construct = COLORED and unifieddyes.on_construct or nil,
-	on_dig = COLORED and unifieddyes.on_dig or nil,
-
-	paramtype = "light",
-	paramtype2 = "color",
-	palette = COLORED and "unifieddyes_palette_extended.png" or 'techage_color16.png',
-	place_param2 = 241,
-	sunlight_propagates = true,
-	sounds = default.node_sound_stone_defaults(),
-	groups = {choppy=2, cracky=1, ud_param2_colorable = 1},
-	is_ground_content = false,
-	drop = "techage:signal_lamp_off"
-})
-
-
-minetest.register_node("techage:signal_lamp_on", {
-	description = S("TechAge Signal Lamp"),
-	tiles = {"techage_signal_lamp.png"},
-	drawtype = "nodebox",
-    node_box = {
-		type = "fixed",
-		fixed = {
-			{-6/16, -6/16, -6/16,  6/16, 6/16, 6/16},
-			{-4/16, -10/16, -4/16,  4/16, -6/16, 4/16},
-		},
-	},
-	on_rightclick = switch_off,
-
-	paramtype = "light",
-	paramtype2 = "color",
-	palette = COLORED and "unifieddyes_palette_extended.png" or 'techage_color16.png',
-	groups = {choppy=2, cracky=1, not_in_creative_inventory=1, ud_param2_colorable = 1},
-
-	on_construct = COLORED and unifieddyes.on_construct or nil,
-	after_place_node = COLORED and unifieddyes.recolor_on_place or nil,
-
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		techage.remove_node(pos, oldnode, oldmetadata)
-		if COLORED then
-			unifieddyes.after_dig_node(pos, oldnode, oldmetadata, digger)
-		end
-	end,
-
-	on_dig = COLORED and unifieddyes.on_dig or nil,
-	light_source = 10,
-	is_ground_content = false,
-	drop = "techage:signal_lamp_off"
-})
-
-techage.register_node({"techage:signal_lamp_off", "techage:signal_lamp_on"}, {
-	on_recv_message = function(pos, src, topic, payload)
-		if topic == "on" then
-			local node = techage.get_node_lvm(pos)
-			switch_on(pos, node)
-		elseif topic == "off" then
-			local node = techage.get_node_lvm(pos)
-			switch_off(pos, node)
-		else
-			return "unsupported"
-		end
-	end,
-	on_beduino_receive_cmnd = function(pos, src, topic, payload)
-		if topic == 1 and payload[1] == 1 then
-			local node = techage.get_node_lvm(pos)
-			switch_on(pos, node)
-			return 0
-		elseif topic == 1 and payload[1] == 0 then
-			local node = techage.get_node_lvm(pos)
-			switch_off(pos, node)
-			return 0
-		else
-			return 2
-		end
-	end,
-})
+register_signallamp("techage:signal_lamp2",
+	S("TechAge Signal Lamp 2 "),
+	{"techage_signallamp2.png^[colorize:#000000:80"},
+	{"techage_signallamp2.png"}
+)
 
 minetest.register_craft({
-	output = "techage:signal_lamp_off",
-	recipe = {
-		{"", "wool:white", ""},
-		{"", "default:torch", ""},
-		{"", "techage:vacuum_tube", ""},
-	},
-})
+		output = "techage:signal_lamp_off",
+		recipe = {
+			{"", "wool:white", ""},
+			{"", "default:torch", ""},
+			{"", "techage:vacuum_tube", ""},
+		},
+	})
+
+minetest.register_craft({
+		output = "techage:signal_lamp2_off",
+		recipe = {
+			{"", "default:glass", ""},
+			{"", "default:torch", ""},
+			{"", "techage:vacuum_tube", ""},
+		},
+	})
diff --git a/techage/manuals/manual_ta3_DE.md b/techage/manuals/manual_ta3_DE.md
index 4ccfcd2..975b34a 100644
--- a/techage/manuals/manual_ta3_DE.md
+++ b/techage/manuals/manual_ta3_DE.md
@@ -527,7 +527,7 @@ Dieser Status und weitere Informationen werden auch ausgegeben, wenn mit dem Sch
 ### TA3 Taster/Schalter / Button/Switch
 
 Der Taster/Schalter sendet `on`/`off` Kommandos zu den Blöcken, die über die Nummern konfiguriert wurden.
-Der Taster/Schalter kann als Taster (button) oder Schalter (switch) konfiguriert werden. Wird er als Taster konfiguriert, so kann die Zeit zwischen den `on` und `off` Kommandos eingestellt werden.
+Der Taster/Schalter kann als Taster (button) oder Schalter (switch) konfiguriert werden. Wird er als Taster konfiguriert, so kann die Zeit zwischen den `on` und `off` Kommandos eingestellt werden. Mit der Betriebsart "on button" wird nur ein `on` und kein `off` Kommandos gesendet.
 
 Über die Checkbox "public" kann eingestellt werden, ob den Taster von jedem (gesetzt), oder nur vom Besitzer selbst (nicht gesetzt) genutzt werden darf.
 
@@ -631,7 +631,9 @@ Im privaten Modus (private) kann das Terminal nur von Spielern verwendet werden,
 ### TechAge Signallampe / Signal Lamp
 
 Die Signallampe kann mit `on`/`off` Kommando ein- bzw. ausgeschaltet werden. Diese Lampe braucht keinen Strom und
-kann mit der Spritzpistole aus der Mod "Unified Dyes" farbig gemacht werden.
+kann mit der Spritzpistole aus der Mod "Unified Dyes" und über Lua/Beduino Kommandos eingefärbt werden.
+
+Mit dem Chat-Kommando `/ta_color` wird die Farbpalette mit den Werten für die Lua/Beduino Kommandos angezeigt und mit `/ta_send color <num>` kann die Farbe geändert werden.
 
 [ta3_signallamp|image]
 
diff --git a/techage/manuals/manual_ta3_EN.md b/techage/manuals/manual_ta3_EN.md
index 5e45494..713bd71 100644
--- a/techage/manuals/manual_ta3_EN.md
+++ b/techage/manuals/manual_ta3_EN.md
@@ -526,7 +526,7 @@ This status and other information is also output when the wrench is clicked on t
 
 ### TA3 Button / Switch
 The button/switch sends `on` / `off` commands to the blocks that have been configured via the numbers.
-The button/switch can be configured as a button or a switch. If it is configured as a button, the time between the `on` and `off` commands can be set.
+The button/switch can be configured as a button or a switch. If it is configured as a button, the time between the `on` and `off` commands can be set. With the operating mode "on button" only an `on` and no `off` command is sent.
 
 The checkbox "public" can be used to set whether the button can be used by everyone (set) or only by the owner himself (not set).
 
@@ -629,8 +629,9 @@ In public mode, all players can use the preconfigured keys.
 
 ### TechAge Signal Lamp
 
-The signal lamp can be switched on or off with the `on` / `off` command. This lamp does not need electricity and
-can be colored with the airbrush tool of the mod Unified Dyes.
+The signal lamp can be switched on or off with the `on` / `off` command. This lamp does not need electricity and can be colored with the airbrush tool from the mod Unified Dyes" and via Lua/Beduino commands.
+
+With the chat command `/ta_color` the color palette with the values for the Lua/Beduino commands is displayed and with `/ta_send color <num>` the color can be changed.
 
 [ta3_signallamp|image]
 
@@ -826,6 +827,18 @@ The processing power is up to 8 times one item every 4 seconds.
 [ta3_injector|image]
 
 
+### TA3 Item Flow Limiter
+
+The Flow Limiter limits the number of items that can be pushed through by using a slider. This allows the number of items that are put into an oven, for example, to be precisely adapted to the recipe.
+
+The Flow Limiter must be configured via the menu and then started. If the configured number of items has been passed, the block switches off. The next time the Flow Limiter is switched on, it again transmits the configured number of items.
+
+**Note: The Flow Limiter must be placed behind the pusher.**
+
+The Flow Limiter can also be configured and started using a Lua or Beduino controller.
+
+[ta3_item_flow_limiter_pas|image]
+
 
 
 ## Tools
diff --git a/techage/manuals/manual_ta4_DE.md b/techage/manuals/manual_ta4_DE.md
index ea5ef7b..e12d10c 100644
--- a/techage/manuals/manual_ta4_DE.md
+++ b/techage/manuals/manual_ta4_DE.md
@@ -467,7 +467,7 @@ Das Terminal dient zur Ein-/Ausgabe für den Lua Controller.
 
 ### TA4 Taster/Schalter / Button/Switch
 
-Beim TA4 Taster/Schalter hat sich nur das Aussehen geändert. Die Funktionalität ist gleich wie beim TA3 Taster/Schalter.
+Beim TA4 Taster/Schalter hat sich nur das Aussehen geändert. Die Funktionalität ist gleich wie beim TA3 Taster/Schalter. Mit dem Schraubenschlüssel-Menü können die Daten aber nachträglich geändert werden.
 
 [ta4_button|image]
 
@@ -554,6 +554,8 @@ Der TA4 Sequenzer unterstützt folgende techage Kommandos:
 
 Das `goto` Kommando wird nur angenommen, wenn der Sequenzer gestoppt ist.
 
+Über das Gabelschlüssel-Menü kann beim Sequenzer die Zykluszeit (normal: 100 ms) geändert werden. 
+
 [ta4_sequencer|image]
 
 
@@ -569,7 +571,7 @@ Da die bewegten Blöcke Spieler und Mobs mitnehmen können, die auf dem Block st
 Anleitung:
 
 - Controller setzen und die Blöcke, die bewegt werden sollen, über das Menü an-trainieren (Es können bis zu 16 Blöcke an-trainiert werden)
-- die "Flugstrecke" muss über eine x,y,z Angabe (relativ) eingegeben werden (die maximale Distanz beträgt 100 m)
+- die "Flugstrecke" muss über eine x,y,z Angabe (relativ) eingegeben werden (die maximale Distanz (x+y+z) beträgt 200 m)
 - mit den Menü-Tasten "Bewege A-B" sowie "Bewege B-A" kann die Bewegung getestet werden
 - man kann auch durch Wände oder andere Blöcke fliegen
 - auch die Zielposition für die Blöcke kann belegt sein. Die Blöcke werden in diesem Falle "unsichtbar" gespeichert. Dies ist für Schiebetüren und ähnliches gedacht
@@ -804,7 +806,13 @@ In einen TA4 Tank passen 2000 Einheiten oder 200 Fässer einer Flüssigkeit.
 
 Siehe TA3 Pumpe.
 
-Die TA4 Pumpe pumpt 8 Einheiten Flüssigkeit alle zwei Sekunden. Zusätzlich unterstützt die Pumpe das Kommando `flowrate`. Damit kann die Gesamtdurchflussmenge durch die Pumpe abgefragt werden.
+Die TA4 Pumpe pumpt 8 Einheiten Flüssigkeit alle zwei Sekunden. 
+
+In der Betriebsart "Durchflussbegrenzer" kann die Anzahl der Einheiten, die von der Pumpe gepumpt werden, begrenzt werden. Die Betriebsart Durchflussbegrenzer kann über das Gabelschlüssel-Menü aktiviert werden, indem im Menü die Anzahl an Einheiten konfiguriert wird. Sobald die  konfigurierte Anzahl an Einheiten gepumpt wurden, schaltet sich die Pumpe ab. Wird die Pumpe wieder eingeschaltet, pumpt sie wieder die konfigurierte Anzahl an Einheiten und schaltet sich dann ab.
+
+Der Durchflussbegrenzer kann auch per Lua- oder Beduino Controller konfiguriert und gestartet werden.
+
+Zusätzlich unterstützt die Pumpe das Kommando `flowrate`. Damit kann die Gesamtdurchflussmenge durch die Pumpe abgefragt werden.
 
 [ta4_pump|image]
 
@@ -840,14 +848,18 @@ Aber: TA4 Schieber und TA4 Verteiler erreichen ihre volle Leistungsfähigkeit nu
 Die Funktion entspricht grundsätzlich der von TA2/TA3. Zusätzlich kann aber über ein Menü konfiguriert werden, welche Gegenstände aus einer TA4 Kiste geholt und weiter transportiert werden sollen.
 Die Verarbeitungsleistung beträgt 12 Items alle 2 s, sofern auf beiden Seiten TA4 Röhren verwendet werden. Anderenfalls sind es nur 6 Items alle 2 s.
 
-Der TA4 Schieber besitzt zwei zusätzliche Kommandos für den Lua Controller:
+In der Betriebsart "Durchlaufbegrenzer" kann die Anzahl der Items, die von dem Schieber bewegt werden, begrenzt werden. Die Betriebsart Durchlaufbegrenzer kann über das Gabelschlüssel-Menü aktiviert werden, indem im Menü die Anzahl an Items konfiguriert wird. Sobald die  konfigurierte Anzahl an Items bewegt wurden, schaltet sich der Schieber ab. Wird der Schieber wieder eingeschaltet, bewegt er wieder die konfigurierte Anzahl an Items und schaltet sich dann ab.
+
+Der TA4 Schieber kann auch per Lua- oder Beduino Controller konfiguriert und gestartet werden.
+
+Hier die zusätzlichen Kommandos für den Lua Controller:
 
 - `config` dient zur Konfiguration des Schiebers, analog zum manuellen Konfiguration über das Menü.
   Beispiel:  `$send_cmnd(1234, "config", "default:dirt")`
   Mit `$send_cmnd(1234, "config", "")` wird die Konfiguration gelöscht
-- `pull` dient zum Absetzen eines Auftrags an den Schieber:
-  Beispiel: `$send_cmnd(1234, "pull", "default:dirt 8")`
-  Als Nummer sind Werte von 1 bis 12 zulässig. Danach geht der Schieber wieder in den `stopped` Mode und sendet ein "off" Kommando zurück an den Sender des "pull" Kommandos.
+- `limit` dient zum Setzen der Anzahl der Items für die Durchlaufbegrenzer Betriebsart:
+  Beispiel: `$send_cmnd(1234, "init", 7)`
+  
 
 [ta4_pusher|image]
 
@@ -957,3 +969,8 @@ Die Verarbeitungsleistung beträgt ein Item alle 8 s. Der Block benötigt hierf
 
 [ta4_recycler|image]
 
+### TA4 Item Durchlaufbegrenzer / Item Flow Limiter
+
+Die Funktion entspricht der von TA3.  
+
+[ta4_item_flow_limiter_pas|image]
\ No newline at end of file
diff --git a/techage/manuals/manual_ta4_EN.md b/techage/manuals/manual_ta4_EN.md
index a8ffd10..e6ef62b 100644
--- a/techage/manuals/manual_ta4_EN.md
+++ b/techage/manuals/manual_ta4_EN.md
@@ -459,7 +459,7 @@ The terminal is used for input / output for the Lua controller.
 
 ### TA4 Button/Switch
 
-Only the appearance of the TA4 button/switch has changed. The functionality is the same as with the TA3 button/switch.
+Only the appearance of the TA4 button/switch has changed. The functionality is the same as with the TA3 button/switch. With the wrench menu, however, the data can be changed later.
 
 [ta4_button|image]
 
@@ -546,6 +546,8 @@ The TA4 sequencer supports the following techage commands:
 
 The `goto` command is only accepted when the sequencer is stopped.
 
+The cycle time (default: 100 ms) can be changed for the sequencer via the open-end wrench menu.
+
 [ta4_sequencer|image]
 
 
@@ -560,7 +562,7 @@ Since the moving blocks can take players and mobs standing on the block with the
 Instructions:
 
 - Set the controller and train the blocks to be moved via the menu (up to 16 blocks can be trained)
-- the "flight route" must be entered via an x, y, z specification (relative) (the maximum distance is 100 m)
+- the "flight route" must be entered via an x, y, z specification (relative) (the maximum distance (x+y+z) is 200 m)
 - The movement can be tested with the menu buttons "Move A-B" and "Move B-A"
 - you can also fly through walls or other blocks
 - The target position for the blocks can also be occupied. In this case, the blocks are saved "invisibly". This is intended for sliding doors and the like
@@ -796,7 +798,13 @@ A TA4 tank can hold 2000 units or 200 barrels of liquid.
 
 See TA3 pump.
 
-The TA4 pump pumps 8 units of liquid every two seconds. The pump also supports the `flowrate` command. This means that the total flow rate through the pump can be queried. 
+The TA4 pump pumps 8 units of liquid every two seconds. 
+
+In the "Flow limiter" mode, the number of units pumped by the pump can be limited. The flow limiter mode can be activated via the open-end wrench menu by configuring the number of units in the menu. Once the configured number of units have been pumped, the pump will turn off. When the pump is turned on again, it will pump the configured number of units again and then turn off.
+
+The flow limiter can also be configured and started using a Lua or Beduino controller.
+
+The pump also supports the `flowrate` command. This allows the total flow rate through the pump to be queried.
 
 [ta4_pump|image]
 
@@ -832,14 +840,17 @@ But: TA4 pushers and TA4 distributors only achieve their full performance when u
 The function basically corresponds to that of TA2 / TA3. In addition, a menu can be used to configure which objects should be taken from a TA4 chest and transported further.
 The processing power is 12 items every 2 s, if TA4 tubes are used on both sides. Otherwise there are only 6 items every 2 s.
 
-The TA4 pusher has two additional commands for the Lua controller:
+In the "flow limiter" mode, the number of items that are moved by the pusher can be limited. The flow limiter mode can be activated via the open-end wrench menu by configuring the number of items in the menu. As soon as the configured number of items have been moved, the pusher switches off. If the pusher is switched on again, it moves the configured number of items again and then switches off.
+
+The TA4 pusher can also be configured and started using a Lua or Beduino controller.
+
+Here are the additional commands for the Lua controller:
 
 - `config` is used to configure the pusher, analogous to manual configuration via the menu.
-  Example: `$send_cmnd(1234, "config", "default: dirt")`
-  With `$send_cmnd(1234, "config", "")` the configuration is deleted
-- `pull` is used to send an order to the pusher:
-  Example: `$send_cmnd(1234, "pull", "default: dirt 8")`
-  Values ​​from 1 to 12 are permitted as numbers. Then the pusher goes back to `stopped` mode and sends an" off "command back to the transmitter of the" pull "command.
+   Example: `$send_cmnd(1234, "config", "default:dirt")`
+   With `$send_cmnd(1234, "config", "")` the configuration is deleted
+- `limit` is used to set the number of items for the flow limiter mode:
+   Example: `$send_cmnd(1234, "init", 7)`
 
 [ta4_pusher|image]
 
@@ -949,3 +960,10 @@ The machine can disassemble pretty much any Techage and Hyperloop blocks. But no
 The processing power is one item every 8 s.  The block requires 16 ku of electricity for this.
 
 [ta4_recycler|image] 
+
+### TA4 Item Flow Limiter
+
+The function corresponds to that of TA3.
+
+[ta4_item_flow_limiter_pas|image]
+
diff --git a/techage/manuals/markdown2formspec.py b/techage/manuals/markdown2formspec.py
index 86bb605..230dfe6 100644
--- a/techage/manuals/markdown2formspec.py
+++ b/techage/manuals/markdown2formspec.py
@@ -5,7 +5,7 @@
 import re
 import sys
 import pprint
-import mistune
+import mistune  # must be v0.8.4
 
 def formspec_escape(text):
     text = text.replace("\\", "")
diff --git a/techage/manuals/ta4_lua_controller_EN.md b/techage/manuals/ta4_lua_controller_EN.md
index a9c3315..5387272 100644
--- a/techage/manuals/ta4_lua_controller_EN.md
+++ b/techage/manuals/ta4_lua_controller_EN.md
@@ -372,6 +372,8 @@ Please note, that this is not a technical distinction, only a logical.
 | "stacks"     | Array with up to 4 Stores with the inventory content (see example) | Only for Sensor Chests                                       |
 | "count"      | number                                                       | Read the item counter of the TA4 Item Detector block         |
 | "count"      | number of items                                              | Read the total amount of TA4 chest items. An optional  number as `add_data` is used to address only one inventory slot (1..8, from left to right). |
+| "count"      | number of items                                              | Read the number of pushed items for a TA4 Pusher in "flow limiter" mode |
+| "count"      | number of units                                              | Read the number of pumped liquid units for a TA4 Pump in "flow limiter" mode |
 | "itemstring" | item string of the given slot                                | Specific command for the TA4 8x2000 Chest to read the item type (technical name) of one chest slot, specified via `add_data` (1..8).<br />Example: s = $send_cmnd("223", "itemstring", 1) |
 | "output"     | recipe output string, <br />e.g.: "default:glass"            | Only for the Industrial Furnace. If no recipe is active, the command returns "unknown" |
 | "input"      | \<index>                                                     | Read a recipe from the TA4 Recipe Block. `<index>` is the number of the recipe. The block return a list of recipe items. |
@@ -395,7 +397,8 @@ Please note, that this is not a technical distinction, only a logical.
 | "config" | "\<slot> \<item list>" | Configure a Distributor filter slot, like: "red default:dirt dye:blue" |
 | "text"                           | text string  | Text to be used for the Sensor Chest menu                    |
 | "reset"                          | nil          | Reset the item counter of the TA4 Item Detector block        |
-| "pull"                           | item  string | Start the TA4 pusher to pull/push items.<br /> Example: `default:dirt 8` |
+| "limit"                       | number | Configure a TA4 Pusher with the number of items that are allowed to be pushed ("flow limiter" mode)<br />limit = 0 turns off the "flow limiter" mode |
+| "limit" | number | Configure a TA4 Pump with the number of liquid units that are allowed to be pumped ("flow limiter" mode)<br />limit = 0 turns off the "flow limiter" mode |
 | "config"                         | item  string | Configure the TA4 pusher.<br />Example: `wool:blue`          |
 | "exchange" | inventory slot number | TA3 Door Controller II (techage:ta3_doorcontroller2)<br />Exchange a block<br />*idx* is the inventory slot number (1..n) of/for the block to be exchanged |
 | "set" | inventory slot number | TA3 Door Controller II (techage:ta3_doorcontroller2)<br />Set/add a block<br />*idx* is the inventory slot number (1..n) with the block to be set |
@@ -414,6 +417,7 @@ Please note, that this is not a technical distinction, only a logical.
 | "stop" | nil | Stop command for the TA4 Sequencer. |
 | "gain" | volume | Set volume of the sound block (`volume` is a value between 0 and 1.0) |
 | "sound" | index | Select sound sample of the sound block |
+| "color" | \<color> | Set the color of the TechAge Signal Lamp and TechAge Signal Lamp 2 (color = 0..255) |
 
 ### Server and Terminal Functions
 
diff --git a/techage/manuals/ta4_lua_controller_EN.pdf b/techage/manuals/ta4_lua_controller_EN.pdf
index c030a4b..33a11a0 100644
Binary files a/techage/manuals/ta4_lua_controller_EN.pdf and b/techage/manuals/ta4_lua_controller_EN.pdf differ
diff --git a/techage/manuals/toc_DE.md b/techage/manuals/toc_DE.md
index 7d02fb9..075b6aa 100644
--- a/techage/manuals/toc_DE.md
+++ b/techage/manuals/toc_DE.md
@@ -228,6 +228,7 @@
         - [TA4 Elektronikfabrik / Electronic Fab](./manual_ta4_DE.md#ta4-elektronikfabrik--electronic-fab)
         - [TA4 Injektor / Injector](./manual_ta4_DE.md#ta4-injektor--injector)
         - [TA4 Recycler](./manual_ta4_DE.md#ta4-recycler)
+        - [TA4 Item Durchlaufbegrenzer / Item Flow Limiter](./manual_ta4_DE.md#ta4-item-durchlaufbegrenzer--item-flow-limiter)
 - [TA5: Zukunft](./manual_ta5_DE.md#ta5:-zukunft)
     - [Energiequellen](./manual_ta5_DE.md#energiequellen)
         - [TA5 Fusionsreaktor](./manual_ta5_DE.md#ta5-fusionsreaktor)
diff --git a/techage/manuals/toc_EN.md b/techage/manuals/toc_EN.md
index bb5becf..1e9d6d9 100644
--- a/techage/manuals/toc_EN.md
+++ b/techage/manuals/toc_EN.md
@@ -134,6 +134,7 @@
         - [TA3 Gravel Rinser](./manual_ta3_EN.md#ta3-gravel-rinser)
         - [TA3 Grinder](./manual_ta3_EN.md#ta3-grinder)
         - [TA3 Injector](./manual_ta3_EN.md#ta3-injector)
+        - [TA3 Item Flow Limiter](./manual_ta3_EN.md#ta3-item-flow-limiter)
     - [Tools](./manual_ta3_EN.md#tools)
         - [Techage Info Tool](./manual_ta3_EN.md#techage-info-tool)
         - [TechAge Programmer](./manual_ta3_EN.md#techage-programmer)
@@ -228,6 +229,7 @@
         - [TA4 Electronic Fab](./manual_ta4_EN.md#ta4-electronic-fab)
         - [TA4 Injector](./manual_ta4_EN.md#ta4-injector)
         - [TA4 Recycler](./manual_ta4_EN.md#ta4-recycler)
+        - [TA4 Item Flow Limiter](./manual_ta4_EN.md#ta4-item-flow-limiter)
 - [TA5: Future](./manual_ta5_EN.md#ta5:-future)
     - [Energy Sources](./manual_ta5_EN.md#energy-sources)
         - [TA5 Fusion Reactor](./manual_ta5_EN.md#ta5-fusion-reactor)
diff --git a/techage/mod.conf b/techage/mod.conf
index cd7e53a..2d39f99 100644
--- a/techage/mod.conf
+++ b/techage/mod.conf
@@ -1,4 +1,4 @@
 name = techage
 depends = default,doors,flowers,tubelib2,networks,basic_materials,bucket,stairs,screwdriver,minecart,lcdlib,safer_lua
-optional_depends = unified_inventory,wielded_light,unifieddyes,moreores,ethereal,mesecon,digtron,bakedclay,moreblocks,i3,creative,craftguide
+optional_depends = unified_inventory,wielded_light,unifieddyes,moreores,ethereal,mesecons,digtron,bakedclay,moreblocks,i3,creative,craftguide
 description = Techage, go through 5 tech ages in search of wealth and power!
diff --git a/techage/move_controller/flycontroller.lua b/techage/move_controller/flycontroller.lua
index 4f1c7ed..36354ff 100644
--- a/techage/move_controller/flycontroller.lua
+++ b/techage/move_controller/flycontroller.lua
@@ -46,7 +46,8 @@ local WRENCH_MENU = {
 
 local function formspec(nvm, meta)
 	local status = meta:get_string("status")
-	local path = meta:contains("path") and meta:get_string("path") or "0,3,0"
+	local path = meta:contains("fs_path") and meta:get_string("fs_path") or
+		meta:contains("path") and meta:get_string("path") or "0,3,0"
 	return "size[8,6.7]" ..
 		"style_type[textarea;font=mono;textcolor=#FFFFFF;border=true]" ..
 		"box[0,-0.1;7.2,0.5;#c6e8ff]" ..
@@ -107,6 +108,7 @@ minetest.register_node("techage:ta5_flycontroller", {
 			local pos_list = mark.get_poslist(name)
 			local _, err = fly.to_path(fields.path, MAX_DIST)
 			if not err then
+				meta:set_string("fs_path", fields.path)
 				meta:set_string("path", fields.path)
 			end
 			nvm.running = nil
@@ -120,8 +122,11 @@ minetest.register_node("techage:ta5_flycontroller", {
 			local _, err = fly.to_path(fields.path, MAX_DIST)
 			if not err then
 				meta:set_string("path", fields.path)
+				meta:set_string("fs_path", fields.path)
 				meta:set_string("status", S("Stored"))
 			else
+				meta:set_string("path", "0,0,0")
+				meta:set_string("fs_path", fields.path)
 				meta:set_string("status", err)
 			end
 			meta:set_string("formspec", formspec(nvm, meta))
diff --git a/techage/move_controller/movecontroller.lua b/techage/move_controller/movecontroller.lua
index 9607ea3..2f795f3 100644
--- a/techage/move_controller/movecontroller.lua
+++ b/techage/move_controller/movecontroller.lua
@@ -22,7 +22,7 @@ local MP = minetest.get_modpath("techage")
 local fly  = dofile(MP .. "/basis/fly_lib.lua")
 local mark = dofile(MP .. "/basis/mark_lib.lua")
 
-local MAX_DIST = 100
+local MAX_DIST = 200
 local MAX_BLOCKS = 16
 
 local WRENCH_MENU = {
@@ -40,6 +40,7 @@ local WRENCH_MENU = {
 		label = S("Handover to B"),
 		tooltip = S("Number of the next movecontroller"),
 		default = "",
+		check = techage.check_numbers,
 	},
 	{
 		type = "number",
@@ -47,6 +48,7 @@ local WRENCH_MENU = {
 		label = S("Handover to A"),
 		tooltip = S("Number of the previous movecontroller"),
 		default = "",
+		check = techage.check_numbers,
 	},
 	{
 		type = "float",
@@ -183,7 +185,7 @@ minetest.register_node("techage:ta4_movecontroller", {
 			if fly.to_vector(fields.path or "", MAX_DIST) then
 				meta:set_string("path", fields.path)
 			end
-			local line = fly.to_vector(meta:get_string("path"))
+			local line = fly.to_vector(meta:get_string("path"), MAX_DIST)
 			if line then
 				nvm.running = true
 				fly.move_to(pos, line)
@@ -235,12 +237,12 @@ techage.register_node({"techage:ta4_movecontroller"}, {
 			nvm.moveBA = false
 			nvm.running = true
 			return fly.move_to_other_pos(pos, true)
-		elseif move_xyz and topic == "move" then
+		elseif not move_xyz and topic == "move" then
 			nvm.moveBA = nvm.moveBA == false
 			nvm.running = true
 			return fly.move_to_other_pos(pos, nvm.moveBA == false)
 		elseif move_xyz and topic == "move2" then
-			local line = fly.to_vector(payload)
+			local line = fly.to_vector(payload, MAX_DIST)
 			if line then
 				nvm.running = true
 				nvm.controller_mode = true
diff --git a/techage/power/power_line.lua b/techage/power/power_line.lua
index bd4fbf1..780552d 100644
--- a/techage/power/power_line.lua
+++ b/techage/power/power_line.lua
@@ -20,7 +20,7 @@ local Cable = techage.ElectricCable
 local power = networks.power
 
 local function can_dig(pos, digger)
-	if digger and digger:is_player() then 
+	if digger and digger:is_player() then
 		if M(pos):get_string("owner") == digger:get_player_name() then
 			return true
 		end
diff --git a/techage/ta2_energy_storage/ta2_winch.lua b/techage/ta2_energy_storage/ta2_winch.lua
index 00a7b54..d682df8 100644
--- a/techage/ta2_energy_storage/ta2_winch.lua
+++ b/techage/ta2_energy_storage/ta2_winch.lua
@@ -57,7 +57,7 @@ end
 local function add_chest_entity(pos, nvm)
 	local mem = techage.get_mem(pos)
 	local length
-	
+
 	if not nvm.capa or nvm.capa == 0 then
 		length = (nvm.length or MAX_ROPE_LEN) * (1 - (nvm.load or 0))
 	else
diff --git a/techage/teleport/teleport_tube.lua b/techage/teleport/teleport_tube.lua
index d1e278a..2f3c993 100644
--- a/techage/teleport/teleport_tube.lua
+++ b/techage/teleport/teleport_tube.lua
@@ -158,11 +158,14 @@ techage.register_node({"techage:ta5_tele_tube"}, {
 				local rmt_nvm = techage.get_nvm(rmt_pos)
 				if techage.is_operational(rmt_nvm) then
 					local tube_dir = M(rmt_pos):get_int("tube_dir")
-					if techage.push_items(rmt_pos, tube_dir, stack) then
+					local leftover = techage.push_items(rmt_pos, tube_dir, stack)
+					-- Moved any items
+					if leftover then
 						State:keep_running(pos, nvm, COUNTDOWN_TICKS)
 						State:keep_running(rmt_pos, rmt_nvm, COUNTDOWN_TICKS)
 						return true
 					end
+					return leftover
 				else
 					State:blocked(pos, nvm, S("Remote block error"))
 				end
diff --git a/techage/textures/generate.py b/techage/textures/generate.py
new file mode 100755
index 0000000..7103ade
--- /dev/null
+++ b/techage/textures/generate.py
@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Script to generate the palette PNG file.
+#
+# Copyright (C) 2022 Joachim Stolberg
+# LGPLv2.1+
+
+from PIL import Image
+
+MainColors = [
+  0x000080, 0x008000, 0x800000, 0x008080, 0x808000, 0x800080,
+  0x0000FF, 0x00FF00, 0xFF0000, 0x00FFFF, 0xFFFF00, 0xFF00FF,
+  0x0080FF, 0x8000FF, 0x80FF00, 0x00FF80, 0xFF8000, 0xFF0080,
+]
+
+def generate():
+    img = Image.new("RGB", (18, 15), color='#000000')
+
+    # Main colors
+    for x in range(0,18):
+      img.putpixel((x, 0), MainColors[x])
+
+    # Grey scale
+    for x in range(0,18):
+      img.putpixel((x, 1), (x * 15, x * 15, x * 15))
+
+    # 216 colors palette
+    idx = 36
+    for r in range(0,6):
+      for g in range(0,6):
+        for b in range(0,6):
+          x = idx % 18
+          y = int(idx / 18)
+          img.putpixel((x, y), (r * 0x33, g * 0x33, b * 0x33))
+          idx += 1
+
+    img.save("techage_palette256.png", "PNG")
+
+generate()
diff --git a/techage/textures/techage_palette256.png b/techage/textures/techage_palette256.png
new file mode 100644
index 0000000..6880d05
Binary files /dev/null and b/techage/textures/techage_palette256.png differ
diff --git a/techage/textures/techage_signallamp2.png b/techage/textures/techage_signallamp2.png
new file mode 100644
index 0000000..93d5f07
Binary files /dev/null and b/techage/textures/techage_signallamp2.png differ
diff --git a/techage/tools/repairkit.lua b/techage/tools/repairkit.lua
index 58ba18c..fab6f38 100644
--- a/techage/tools/repairkit.lua
+++ b/techage/tools/repairkit.lua
@@ -115,6 +115,16 @@ local function read_state(itemstack, user, pointed_thing)
 				if owner ~= "" then
 					minetest.chat_send_player(user:get_player_name(), S("Node owner")..": "..owner.."    ")
 				end
+				if ndef and ndef.networks and ndef.networks.pipe2 and ndef.networks.pipe2.ntype == "pump" then
+					local tbl = networks.liquid.get_liquids(pos, Pipe2)
+					if #tbl > 0 then
+						local names = table.concat(tbl, ",  ")
+						minetest.chat_send_player(user:get_player_name(), S("Pump connected to tank(s) with: @1", names))
+					else
+						minetest.chat_send_player(user:get_player_name(), S("Pump connected to no/empty tank(s)."))
+					end
+				end
+
 				minetest.chat_send_player(user:get_player_name(), S("Position")..": "..minetest.pos_to_string(pos).."    ")
 				itemstack:add_wear(65636/200)
 				return itemstack
diff --git a/unified_inventory/bags.lua b/unified_inventory/bags.lua
index 14ac875..876b1a5 100644
--- a/unified_inventory/bags.lua
+++ b/unified_inventory/bags.lua
@@ -114,6 +114,8 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 	end
 end)
 
+-- Player slots are preserved when unified_inventory is disabled. Do not allow modification.
+-- Fix: use a detached inventory and store the data separately.
 local function save_bags_metadata(player, bags_inv)
 	local is_empty = true
 	local bags = {}
@@ -163,7 +165,7 @@ local function load_bags_metadata(player, bags_inv)
 		save_bags_metadata(player, bags_inv)
 	end
 
-	-- Clean up deprecated garbage after saving
+	-- Legacy: Clean up old player lists
 	for i = 1, 4 do
 		local bag = "bag" .. i
 		player_inv:set_size(bag, 0)
@@ -172,46 +174,29 @@ end
 
 minetest.register_on_joinplayer(function(player)
 	local player_name = player:get_player_name()
-	local bags_inv = minetest.create_detached_inventory(player_name .. "_bags",{
+	local bags_inv = minetest.create_detached_inventory(player_name .. "_bags", {
+		allow_put = function(inv, listname, index, stack, player)
+			local new_slots = stack:get_definition().groups.bagslots
+			if not new_slots then
+				return 0 -- ItemStack is not a bag.
+			end
+
+			-- The execution order of `allow_put`/`allow_take` is not defined.
+			-- We do not know the replacement ItemStack if the items are swapped.
+			-- Hence, bag slot upgrades and downgrades are not possible with the
+			-- current API.
+
+			if not player:get_inventory():is_empty(listname .. "contents") then
+				-- Legacy: in case `allow_take` is not executed on old Minetest versions.
+				return 0
+			end
+			return 1
+		end,
 		on_put = function(inv, listname, index, stack, player)
 			player:get_inventory():set_size(listname .. "contents",
 					stack:get_definition().groups.bagslots)
 			save_bags_metadata(player, inv)
 		end,
-		allow_put = function(inv, listname, index, stack, player)
-			local new_slots = stack:get_definition().groups.bagslots
-			if not new_slots then
-				return 0
-			end
-			local player_inv = player:get_inventory()
-			local old_slots = player_inv:get_size(listname .. "contents")
-
-			if new_slots >= old_slots then
-				return 1
-			end
-
-			-- using a smaller bag, make sure it fits
-			local old_list = player_inv:get_list(listname .. "contents")
-			local new_list = {}
-			local slots_used = 0
-			local use_new_list = false
-
-			for i, v in ipairs(old_list) do
-				if v and not v:is_empty() then
-					slots_used = slots_used + 1
-					use_new_list = i > new_slots
-					new_list[slots_used] = v
-				end
-			end
-			if new_slots >= slots_used then
-				if use_new_list then
-					player_inv:set_list(listname .. "contents", new_list)
-				end
-				return 1
-			end
-			-- New bag is smaller: Disallow inserting
-			return 0
-		end,
 		allow_take = function(inv, listname, index, stack, player)
 			if player:get_inventory():is_empty(listname .. "contents") then
 				return stack:get_count()
@@ -230,6 +215,20 @@ minetest.register_on_joinplayer(function(player)
 	load_bags_metadata(player, bags_inv)
 end)
 
+
+minetest.register_allow_player_inventory_action(function(player, action, inventory, info)
+	-- From detached inventory -> player inventory: put & take callbacks
+	if action ~= "put" or not info.listname:find("bag%dcontents") then
+		return
+	end
+	if info.stack:get_definition().groups.bagslots then
+		-- Problem 1: empty bags could be moved into their own slots
+		-- Problem 2: cannot reliably keep track of ItemStack ownership due to
+		--> Disallow all external bag movements into this list
+		return 0
+	end
+end)
+
 -- register bag tools
 minetest.register_tool("unified_inventory:bag_small", {
 	description = S("Small Bag"),
diff --git a/unified_inventory/locale/unified_inventory.de.tr b/unified_inventory/locale/unified_inventory.de.tr
index 474049c..f1b1670 100644
--- a/unified_inventory/locale/unified_inventory.de.tr
+++ b/unified_inventory/locale/unified_inventory.de.tr
@@ -7,17 +7,17 @@ Bag @1=Tasche @1
 Small Bag=Kleine Tasche
 Medium Bag=Mittelgroße Tasche
 Large Bag=Große Tasche
-All Items=
-Misc. Items=
-Plant Life=
-Building Materials=
-Tools=
-Minerals and Metals=
-Environment and Worldgen=
-Lighting=
+All Items=Alle Gegenstände
+Misc. Items=Sonstige Gegenstände
+Plant Life=Pfanzenwelt
+Building Materials=Baumaterialien
+Tools=Werkzeuge
+Minerals and Metals=Minerale und Metalle
+Environment and Worldgen=Umwelt und Welterstellung
+Lighting=Beleuchtung
  and = und 
-Scroll categories left=
-Scroll categories right=
+Scroll categories left=Kategorien nach links blättern
+Scroll categories right=Kategorien nach rechts blättern
 Search=Suchen
 Reset search and display everything=Suche zurücksetzen und alles anzeigen
 First page=Erste Seite
@@ -76,10 +76,10 @@ Waypoints=Wegpunkte
 Select Waypoint #@1=Wegpunkt Nr. @1 auswählen
 Waypoint @1=Wegpunkt Nr. @1
 Set waypoint to current location=Setze Wegpunkt zur derzeitigen Position
-Hide waypoint=
-Show waypoint=
-Hide coordinates=
-Show coordinates=
+Hide waypoint=Wegpunkt verstecken
+Show waypoint=Wegpunkt zeigen
+Hide coordinates=Koordinaten verstecken
+Show coordinates=Koordinaten zeigen
 Change color of waypoint display=Farbe der Darstellung der Wegpunkte ändern
 Edit waypoint name=Name des Wegpunkts ändern
 Waypoint active=Wegpunkt aktiv
diff --git a/unified_inventory/register.lua b/unified_inventory/register.lua
index 8dc20f0..1f72bfe 100644
--- a/unified_inventory/register.lua
+++ b/unified_inventory/register.lua
@@ -207,11 +207,9 @@ ui.register_page("craft", {
 
 local function stack_image_button(x, y, w, h, buttonname_prefix, item)
 	local name = item:get_name()
-	local count = item:get_count()
-	local wear = item:get_wear()
 	local description = item:get_meta():get_string("description")
 	local show_is_group = false
-	local displayitem = name.." "..count.." "..wear
+	local displayitem = item:to_string()
 	local selectitem = name
 	if name:sub(1, 6) == "group:" then
 		local group_name = name:sub(7)
@@ -245,6 +243,9 @@ local function stack_image_button(x, y, w, h, buttonname_prefix, item)
 	return button
 end
 
+-- The recipe text contains parameters, hence they can yet not be translated.
+-- Instead, use a dummy translation call so that it can be picked up by the
+-- static parsing of the translation string update script
 local recipe_text = {
 	recipe = NS("Recipe @1 of @2"),
 	usage = NS("Usage @1 of @2"),