TA4 Energy Storage System added

2019-09-13 23:01:55 +02:00 · 2019-09-13 23:01:55 +02:00 · 2575976616
commit 2575976616
parent 232f41d2dd
17 changed files with 515 additions and 720 deletions
--- a/basis/node_states.lua
+++ b/basis/node_states.lua
@ -431,9 +431,9 @@ function NodeStates:on_receive_message(pos, topic, payload)
 	elseif topic == "state" then
 		local node = minetest.get_node(pos)
 		if node.name == "ignore" then  -- unloaded node?
-			return "blocked"
+			return "unloaded"
 		end
-		return self:get_state_string(tubelib2.get_mem(pos))
+		return techage.get_state_string(tubelib2.get_mem(pos))
 	elseif topic == "counter" then
 		return mem.techage_item_meter or 1
 	elseif topic == "clear_counter" then
--- a/coal_power_station/akkubox.lua
+++ b/coal_power_station/akkubox.lua
@ -18,7 +18,7 @@ local S = techage.S

 local CYCLE_TIME = 2
 local PWR_PERF = 10
-local PWR_CAPA = 3000
+local PWR_CAPA = 2000

 local Power = techage.ElectricCable
 local power = techage.power
@ -130,9 +130,13 @@ minetest.register_node("techage:ta3_akku", {
 	on_construct = tubelib2.init_mem,

 	after_place_node = function(pos, placer, itemstack)
+		local meta = M(pos)
 		-- secondary 'after_place_node', called by power. Don't use tubelib2.init_mem(pos)!!!
 		local mem = tubelib2.get_mem(pos)
-		State:node_init(pos, mem, "")
+		local own_num = techage.add_node(pos, "techage:ta3_akku")
+		meta:set_string("owner", placer:get_player_name())
+		meta:set_string("infotext", S("TA3 Akku Box").." "..own_num)
+		State:node_init(pos, mem, own_num)
 		mem.capa = get_capa(itemstack)
 		on_rightclick(pos)
 	end,
@ -159,6 +163,26 @@ techage.power.register_node({"techage:ta3_akku"}, {
 	power_network  = Power,
 })

+-- for logical communication
+techage.register_node({"techage:ta3_akku"}, {
+	on_recv_message = function(pos, src, topic, payload)
+		local mem = tubelib2.get_mem(pos)
+		if topic == "capa" then
+			return techage.power.percent(PWR_CAPA, mem.capa)
+		else
+			return State:on_receive_message(pos, topic, payload)
+		end
+	end,
+	on_node_load = function(pos)
+		local meta = M(pos)
+		if meta:get_string("node_number") == "" then
+			local own_num = techage.add_node(pos, "techage:ta3_akku")
+			meta:set_string("node_number", own_num)
+			meta:set_string("infotext", S("TA3 Akku Box").." "..own_num)
+		end
+	end,
+})
+
 techage.register_entry_page("ta3ps", "akku",
 	S("TA3 Akku Box"), 
 	S("Used to store electrical energy. Charged in about 10 min, provides energy for 10 min.@n"..
--- a/coal_power_station/power_terminal.lua
+++ b/coal_power_station/power_terminal.lua
@ -17,6 +17,8 @@ local P = minetest.string_to_pos
 local M = minetest.get_meta
 local S = techage.S

+local BLOCKING_TIME = 2
+
 local Param2ToDir = {
 	[0] = 6,
 	[1] = 5,
@ -57,6 +59,9 @@ local function formspec(pos)
 	"button[1.5,3.3;2,1;update;"..S("Update").."]"
 end

+local function update_formspec(pos)
+	M(pos):set_string("formspec", formspec(pos))
+end

 minetest.register_node("techage:ta3_power_terminal", {
 	description = S("TA3 Power Terminal"),
@ -81,16 +86,23 @@ minetest.register_node("techage:ta3_power_terminal", {
 		local node = minetest.get_node(pos)
 		local outdir = techage.side_to_outdir("B", node.param2)
 		local jpos = tubelib2.get_pos(pos, outdir)
+		local mem = tubelib2.init_mem(pos)
+		mem.blocked_until = 0
 		local meta = M(pos)
 		meta:set_string("junction_pos", minetest.serialize(jpos))
 		meta:set_string("formspec", formspec(pos))
 	end,
 	
 	on_receive_fields = function(pos, formname, fields, player)
-		if fields.update then
+		local mem = tubelib2.get_mem(pos)
+		mem.blocked_until = mem.blocked_until or minetest.get_gametime()
+		if fields.update and mem.blocked_until < minetest.get_gametime() then
 			M(pos):set_string("formspec", formspec(pos))
+			mem.blocked_until = minetest.get_gametime() + BLOCKING_TIME
+			minetest.after(BLOCKING_TIME + 1, update_formspec, pos)
 		end
 	end,
+	
 	on_rightclick = function(pos, node, clicker)
 		M(pos):set_string("formspec", formspec(pos))
 	end,
--- a/energy_storage/akkubox.lua
+++ b/energy_storage/akkubox.lua
@ -1,176 +0,0 @@
--[[
-
-	TechAge
-	=======
-
-	Copyright (C) 2019 Joachim Stolberg
-
-	GPL v3
-	See LICENSE.txt for more information
-	
-	TA3 Akku Box
-
-]]--
-
-- for lazy programmers
-local M = minetest.get_meta
-local S = techage.S
-
-local CYCLE_TIME = 2
-local PWR_PERF = 10
-local PWR_CAPA = 3000
-
-local Power = techage.ElectricCable
-local power = techage.power
-
-local function in_range(val, min, max)
-	if val < min then return min end
-	if val > max then return max end
-	return val
-end
-
-local function formspec(self, pos, mem)
-	return "size[5,3]"..
-		default.gui_bg..
-		default.gui_bg_img..
-		default.gui_slots..
-		"image[0,0.5;1,2;"..techage.power.formspec_power_bar(PWR_CAPA, mem.capa).."]"..
-		"label[0.2,2.5;Load]"..
-		"button[1.1,1;1.8,1;update;"..S("Update").."]"..
-		"image_button[3,1;1,1;".. self:get_state_button_image(mem) ..";state_button;]"..
-		"image[4,0.5;1,2;"..techage.power.formspec_load_bar(-(mem.delivered or 0), PWR_PERF).."]"..
-		"label[4.2,2.5;Flow]"
-end
-
-
-local function start_node(pos, mem, state)
-	mem.running = true
-	mem.delivered = 0
-	power.secondary_start(pos, mem, PWR_PERF, PWR_PERF)
-end
-
-local function stop_node(pos, mem, state)
-	mem.running = false
-	mem.delivered = 0
-	power.secondary_stop(pos, mem)
-end
-
-local State = techage.NodeStates:new({
-	node_name_passive = "techage:ta3_akku",
-	cycle_time = CYCLE_TIME,
-	standby_ticks = 0,
-	formspec_func = formspec,
-	start_node = start_node,
-	stop_node = stop_node,
-})
-
-local function node_timer(pos, elapsed)
-	local mem = tubelib2.get_mem(pos)
-	if mem.running then
-		mem.delivered = power.secondary_alive(pos, mem, mem.capa, PWR_CAPA)
-		mem.capa = mem.capa - mem.delivered
-		mem.capa = in_range(mem.capa, 0, PWR_CAPA)
-	end
-	return mem.running
-end
-
-local function on_receive_fields(pos, formname, fields, player)
-	if minetest.is_protected(pos, player:get_player_name()) then
-		return
-	end
-	local mem = tubelib2.get_mem(pos)
-	State:state_button_event(pos, mem, fields)
-	
-	if fields.update then
-		local mem = tubelib2.get_mem(pos)
-		M(pos):set_string("formspec", formspec(State, pos, mem))
-	end
-end
-
-local function on_rightclick(pos)
-	local mem = tubelib2.get_mem(pos)
-	M(pos):set_string("formspec", formspec(State, pos, mem))
-end
-
-local function get_capa(itemstack)
-	local meta = itemstack:get_meta()
-	if meta then
-		return in_range(meta:get_int("capa") * (PWR_CAPA/100), 0, 3000)
-	end
-	return 0
-end
-
-local function set_capa(pos, oldnode, digger, capa)
-	local node = ItemStack(oldnode.name)
-	local meta = node:get_meta()
-	capa = techage.power.percent(PWR_CAPA, capa)
-	capa = (math.floor((capa or 0) / 5)) * 5
-	meta:set_int("capa", capa)
-	local text = S("TA3 Akku Box").." ("..capa.." %)"
-	meta:set_string("description", text)
-	local inv = minetest.get_inventory({type="player", name=digger:get_player_name()})
-	local left_over = inv:add_item("main", node)
-	if left_over:get_count() > 0 then
-		minetest.add_item(pos, node)
-	end
-end
-
-minetest.register_node("techage:ta3_akku", {
-	description = S("TA3 Akku Box"),
-	tiles = {
-		-- up, down, right, left, back, front
-		"techage_filling_ta3.png^techage_frame_ta3_top.png",
-		"techage_filling_ta3.png^techage_frame_ta3.png",
-		"techage_filling_ta3.png^techage_frame_ta3.png^techage_appl_hole_electric.png",
-		"techage_filling_ta3.png^techage_frame_ta3.png^techage_appl_source.png",
-		"techage_filling_ta3.png^techage_frame_ta3.png^techage_appl_source.png",
-		"techage_filling_ta3.png^techage_frame_ta3.png^techage_appl_source.png",
-	},
-
-	on_construct = tubelib2.init_mem,
-
-	after_place_node = function(pos, placer, itemstack)
-		-- secondary 'after_place_node', called by power. Don't use tubelib2.init_mem(pos)!!!
-		local mem = tubelib2.get_mem(pos)
-		State:node_init(pos, mem, "")
-		mem.capa = get_capa(itemstack)
-		on_rightclick(pos)
-	end,
-	
-	after_dig_node = function(pos, oldnode, oldmetadata, digger)
-		local mem = tubelib2.get_mem(pos)
-		set_capa(pos, oldnode, digger, mem.capa)
-	end,
-	
-	on_receive_fields = on_receive_fields,
-	on_rightclick = on_rightclick,
-	on_timer = node_timer,
-
-	drop = "", -- don't remove, item will be added via 'set_capa'
-	paramtype2 = "facedir",
-	groups = {cracky=2, crumbly=2, choppy=2},
-	on_rotate = screwdriver.disallow,
-	is_ground_content = false,
-	sounds = default.node_sound_wood_defaults(),
-})
-
-techage.power.register_node({"techage:ta3_akku"}, {
-	conn_sides = {"R"},
-	power_network  = Power,
-})
-
-techage.register_entry_page("ta3ps", "akku",
-	S("TA3 Akku Box"), 
-	S("Used to store electrical energy. Charged in about 10 min, provides energy for 10 min.@n"..
-		"It take and deliver up to 10 units electrical power."), 
-	"techage:ta3_akku")
-
-
-minetest.register_craft({
-	output = "techage:ta3_akku",
-	recipe = {
-		{"default:tin_ingot", "default:tin_ingot", "default:wood"},
-		{"default:copper_ingot", "default:copper_ingot", "techage:electric_cableS"},
-		{"techage:iron_ingot", "techage:iron_ingot", "default:wood"},
-	},
-})
--- a/energy_storage/generator.lua
+++ b/energy_storage/generator.lua
@ -8,7 +8,7 @@
 	GPL v3
 	See LICENSE.txt for more information
 	
-	TA4 Generator
+	TA4 Dummy Generator for the TES

 ]]--

@ -16,88 +16,29 @@
 local M = minetest.get_meta
 local S = techage.S

-local STANDBY_TICKS = 4
-local COUNTDOWN_TICKS = 4
 local CYCLE_TIME = 2
-local PWR_CAPA = 80

 local Cable = techage.ElectricCable
 local power = techage.power

-local function formspec(self, pos, mem)
-	return "size[8,7]"..
-		default.gui_bg..
-		default.gui_bg_img..
-		default.gui_slots..
-		"image[6,0.5;1,2;"..power.formspec_power_bar(PWR_CAPA, mem.provided).."]"..
-		"image_button[5,1;1,1;".. self:get_state_button_image(mem) ..";state_button;]"..
-		"button[2,1.5;2,1;update;"..S("Update").."]"..
-		"list[current_player;main;0,3;8,4;]"..
-		default.get_hotbar_bg(0, 3)
-end
-
-local function can_start(pos, mem, state)
-	return (mem.firebox_trigger or 0) > 0 -- by means of firebox
-end
-
-local function start_node(pos, mem, state)
-	mem.generating = true  -- needed for power distribution
-	power.generator_start(pos, mem, PWR_CAPA)
-end
-
-local function stop_node(pos, mem, state)
-	mem.generating = false
-	power.generator_stop(pos, mem)
-	mem.provided = 0
-end
-
-local State = techage.NodeStates:new({
-	node_name_passive = "techage:generator",
-	node_name_active = "techage:generator_on",
-	cycle_time = CYCLE_TIME,
-	standby_ticks = STANDBY_TICKS,
-	formspec_func = formspec,
-	infotext_name = S("TA3 Generator"),
-	can_start = can_start,
-	start_node = start_node,
-	stop_node = stop_node,
-})
-
-local function node_timer(pos, elapsed)
-	local mem = tubelib2.get_mem(pos)
-	if mem.generating then
-		mem.firebox_trigger = (mem.firebox_trigger or 0) - 1
-		if mem.firebox_trigger <= 0 then
-			State:nopower(pos, mem)
-			mem.generating = false
-			power.generator_stop(pos, mem)
-			mem.provided = 0
-		else
-			mem.provided = power.generator_alive(pos, mem)
-			State:keep_running(pos, mem, COUNTDOWN_TICKS)
-		end
-	end
-	return State:is_active(mem)
-end
-
-local function on_receive_fields(pos, formname, fields, player)
-	if minetest.is_protected(pos, player:get_player_name()) then
+local function swap_node(pos, name)
+	local node = minetest.get_node(pos)
+	if node.name == name then
 		return
 	end
-	local mem = tubelib2.get_mem(pos)
-	State:state_button_event(pos, mem, fields)
-	
-	if fields.update then
-		M(pos):set_string("formspec", formspec(State, pos, mem))
-	end
+	node.name = name
+	minetest.swap_node(pos, node)
 end

-local function on_rightclick(pos)
+-- to detect the missing turbine
+local function node_timer(pos, elapsed)
 	local mem = tubelib2.get_mem(pos)
-	M(pos):set_string("formspec", formspec(State, pos, mem))
-	if mem.generating then
-		minetest.get_node_timer(pos):start(CYCLE_TIME)
+	mem.remote_trigger = (mem.remote_trigger or 0) - 1
+	if mem.remote_trigger <= 0 then
+		swap_node(pos, "techage:ta4_generator")
+		mem.running = false
 	end
+	return true
 end

 minetest.register_node("techage:ta4_generator", {
@ -112,20 +53,13 @@ minetest.register_node("techage:ta4_generator", {
 		"techage_filling_ta4.png^techage_frame_ta4.png^techage_appl_generator.png^[transformFX]",
 	},
 	
-	on_construct = tubelib2.init_mem,
-	
 	after_place_node = function(pos, placer)
-		-- secondary 'after_place_node', called by power. Don't use tubelib2.init_mem(pos)!!!
-		local mem = tubelib2.get_mem(pos)
-		local number = techage.add_node(pos, "techage:generator")
-		State:node_init(pos, mem, number)
-		on_rightclick(pos)
+		local mem = tubelib2.init_mem(pos)
+		mem.running = false
+		mem.remote_trigger = 0
 	end,

-	on_receive_fields = on_receive_fields,
-	on_rightclick = on_rightclick,
 	on_timer = node_timer,
-
 	paramtype2 = "facedir",
 	groups = {cracky=2, crumbly=2, choppy=2},
 	on_rotate = screwdriver.disallow,
@ -163,10 +97,11 @@ minetest.register_node("techage:ta4_generator_on", {
 		},
 	},
 	
-	on_receive_fields = on_receive_fields,
-	on_rightclick = on_rightclick,
+	on_rightclick = function(pos)
+		minetest.get_node_timer(pos):start(CYCLE_TIME)
+	end,
+	
 	on_timer = node_timer,
-
 	drop = "",
 	paramtype2 = "facedir",
 	groups = {not_in_creative_inventory=1},
@ -179,50 +114,46 @@ minetest.register_node("techage:ta4_generator_on", {
 minetest.register_craft({
 	output = "techage:ta4_generator",
 	recipe = {
-		{"basic_materials:steel_bar", "dye:green", "default:wood"},
-		{"", "basic_materials:gear_steel", "techage:electric_cableS"},
-		{"default:wood", "techage:iron_ingot", "basic_materials:steel_bar"},
+		{"", "dye:blue", ""},
+		{"", "techage:generator", ""},
+		{"", "techage:ta4_wlanchip", ""},
 	},
 })

+-- need a dummy power connection
 techage.power.register_node({"techage:ta4_generator", "techage:ta4_generator_on"}, {
 	conn_sides = {"R"},
 	power_network = Cable,
 })

-- for logical communication
+-- controlled by the turbine
 techage.register_node({"techage:ta4_generator", "techage:ta4_generator_on"}, {
 	on_transfer = function(pos, in_dir, topic, payload)
 		local mem = tubelib2.get_mem(pos)
-		if topic == "power_level" then
-			local mem = tubelib2.get_mem(pos)
-			mem.power_level = payload
+		if topic == "power" then
+			mem.remote_trigger = 2
+			return techage.power.power_available(pos, mem, 0)
+		elseif topic == "start" then
+			mem.remote_trigger = 2
+			swap_node(pos, "techage:ta4_generator_on")
+			mem.running = true
+			minetest.get_node_timer(pos):start(CYCLE_TIME)
+			return true
+		elseif topic == "stop" then
+			swap_node(pos, "techage:ta4_generator")
+			mem.running = false
+			mem.remote_trigger = 0
+			minetest.get_node_timer(pos):stop()
+			return true
 		elseif topic == "trigger" then
-			mem.firebox_trigger = 3
-			mem.power_level = payload
-			if mem.generating then
-				return math.max((mem.provided or PWR_CAPA) / PWR_CAPA, 0.02)
-			else
-				return 0
-			end
+			mem.remote_trigger = 2
+			return true
 		end
 	end,
-	on_recv_message = function(pos, src, topic, payload)
-		local mem = tubelib2.get_mem(pos)
-		if topic == "load" then
-			return techage.power.percent(PWR_CAPA, mem.provided)
-		else
-			return State:on_receive_message(pos, topic, payload)
-		end
-	end,
-	on_node_load = function(pos)
-		State:on_node_load(pos)
-	end,
 })

 techage.register_entry_page("ta4es", "ta4_generator", 
-	S("TA3 Generator"), 
-	S("Part of the Power Station. Has to be placed side by side with the TA3 Turbine. "..
-		"Connect the Generator with your TA3 machines by means of Electric Cables and Junction Boxes@n"..
-		"(see TA3 Power Station)"), 
-	"techage:generator")
+	S("TA4 Generator"), 
+	S("Part of TA4 Energy Systems. Has to be placed side by side with the TA4 Turbine. "..
+		"Connect the Generator with your power network@n"), 
+	"techage:ta4_generator")
--- a/energy_storage/heatexchanger.lua
+++ b/energy_storage/heatexchanger.lua
@ -13,208 +13,189 @@
 ]]--

 -- for lazy programmers
-local P = minetest.string_to_pos
+local S2P = minetest.string_to_pos
+local P2S = minetest.pos_to_string
 local M = minetest.get_meta
 local S = techage.S

-local CYCLE_TIME = 4
-local STANDBY_TICKS = 2
-local COUNTDOWN_TICKS = 2
-local HEAT_STEP = 10
-local WATER_CONSUMPTION = 0.5
-local MAX_WATER = 10
-
-local Pipe = techage.BiogasPipe
-
-local Water = {
-	["bucket:bucket_river_water"] = true,
-	["bucket:bucket_water"] = true,
-	["bucket:bucket_empty"] = true,
+local CYCLE_TIME = 2
+local PWR_PERF = 60
+local GRVL_CAPA = 1333
+local PWR_CAPA = {
+	[3] = GRVL_CAPA * 3 * 3 * 3,  -- ~0.5 days
+	[4] = GRVL_CAPA * 5 * 5 * 5,  -- ~2.5 days
+	[5] = GRVL_CAPA * 7 * 7 * 7,  --   ~6 days
 }

+local Cable = techage.ElectricCable
+local Pipe = techage.BiogasPipe
+local power = techage.power
+
+local function in_range(val, min, max)
+	if val < min then return min end
+	if val > max then return max end
+	return val
+end
+
+-- commands for 'techage:heatexchanger1'
+local function turbine_cmnd(pos, cmnd)
+	return techage.transfer(
+		pos, 
+		"R",  -- outdir
+		cmnd,  -- topic
+		nil,  -- payload
+		Pipe,  -- Pipe
+		{"techage:ta4_turbine", "techage:ta4_turbine_on"})
+end
+
+local function heatexchanger3_cmnd(pos, cmnd)
+	return techage.transfer(
+		{x = pos.x, y = pos.y + 1, z = pos.z}, 
+		"U",  -- outdir
+		cmnd,  -- topic
+		nil,  -- payload
+		nil,  -- Pipe
+		{"techage:heatexchanger3"})
+end
+
+local function inlet_cmnd(pos, cmnd, payload)
+	return techage.transfer(
+		pos, 
+		"L",  -- outdir
+		cmnd,  -- topic
+		payload,  -- payload
+		Pipe,  -- Pipe
+		{"techage:ta4_pipe_inlet"})
+end
+
+local function play_sound(pos)
+	local mem = tubelib2.get_mem(pos)
+	if mem.running then
+		mem.handle = minetest.sound_play("techage_booster", {
+			pos = pos, 
+			gain = 0.5,
+			max_hear_distance = 10})
+	end
+end
+
+local function stop_sound(pos)
+	local mem = tubelib2.get_mem(pos)
+	if mem.running and mem.handle then
+		minetest.sound_stop(mem.handle)
+		mem.handle = nil
+	end
+end
+
+local function swap_node(pos, name)
+	local node = minetest.get_node(pos)
+	if node.name == name then
+		return
+	end
+	node.name = name
+	minetest.swap_node(pos, node)
+end
+
+local function charging(pos, mem, is_charging)
+	if mem.capa >= mem.capa_max then
+		return
+	end
+	if is_charging ~= mem.was_charging then
+		mem.was_charging = is_charging
+		if is_charging then
+			turbine_cmnd(pos, "stop")
+			play_sound(pos)
+		else
+			turbine_cmnd(pos, "start")
+			stop_sound(pos)
+		end
+	elseif is_charging then
+		play_sound(pos)
+	end
+end
+
+local function glowing(pos, mem, should_glow)
+	print("glowing", P2S(mem.win_pos), should_glow)
+	if mem.win_pos then
+		if should_glow then
+			swap_node(mem.win_pos, "techage:glow_gravel")
+		else
+			swap_node(mem.win_pos, "default:gravel")
+		end
+	end
+end
+
 local function formspec(self, pos, mem)
-	local temp = mem.temperature or 20
-	local ratio = mem.power_ratio or 0
-	return "size[8,7]"..
+	return "size[5,3]"..
 		default.gui_bg..
 		default.gui_bg_img..
 		default.gui_slots..
-		"image_button[0,0.2;1,1;techage_form_inventory.png;storage;;true;false;]"..
-		"list[context;water;1,0.2;1,1;]"..
-		"image_button[0,1.6;1,1;techage_form_input.png;input;;true;false;]"..
-		"list[context;input;1,1.6;1,1;]"..		
-		"image[1,1.6;1,1;bucket_water.png]"..
-		"image[1,1.6;1,1;techage_form_mask.png]"..
-		"image[2,0.5;1,2;techage_form_temp_bg.png^[lowpart:"..
-		temp..":techage_form_temp_fg.png]"..
-		"image[7,0.5;1,2;"..techage.power.formspec_power_bar(1, ratio).."]"..
-		"image_button[6,1;1,1;".. self:get_state_button_image(mem) ..";state_button;]"..
-		"button[3,1.5;2,1;update;"..S("Update").."]"..
-		"list[current_player;main;0,3;8,4;]"..
-		"listring[current_name;water]"..
-		"listring[current_player;main]"..
-		default.get_hotbar_bg(0, 3)
+		"image[0,0.5;1,2;"..techage.power.formspec_power_bar(mem.capa_max, mem.capa).."]"..
+		"label[0.2,2.5;Load]"..
+		"button[1.1,1;1.8,1;update;"..S("Update").."]"..
+		"image_button[3,1;1,1;".. self:get_state_button_image(mem) ..";state_button;]"..
+		"image[4,0.5;1,2;"..techage.power.formspec_load_bar(-(mem.delivered or 0), PWR_PERF).."]"..
+		"label[4.2,2.5;Flow]"
 end

 local function can_start(pos, mem, state)
-	return mem.temperature and mem.temperature > 80
+	print("can_start")
+	if turbine_cmnd(pos, "power") then
+		local radius = inlet_cmnd(pos, "radius")
+		print("radius = "..radius)
+		if radius then
+			mem.capa_max = PWR_CAPA[tonumber(radius)] or 0
+			local owner = M(pos):get_string("owner") or ""
+			return inlet_cmnd(pos, "volume", owner)
+		end
+	end
+	return false
 end

 local function start_node(pos, mem, state)
+	print("start_node", P2S(pos))
 	mem.running = true
-	mem.power_ratio = 0
+	mem.delivered = 0
+	mem.was_charging = true
+	play_sound(pos)
+	mem.win_pos = inlet_cmnd(pos, "window")
+	power.secondary_start(pos, mem, PWR_PERF, PWR_PERF)
 end

 local function stop_node(pos, mem, state)
 	mem.running = false
-	mem.power_ratio = 0
-end
-
-- check the positions above
-local function no_space(pos)
-	local node1 = minetest.get_node({x=pos.x, y=pos.y+1, z=pos.z})
-	local node2 = minetest.get_node({x=pos.x, y=pos.y+2, z=pos.z})
-	return node1.name ~= "air" or node2.name ~= "air"
+	mem.delivered = 0
+	turbine_cmnd(pos, "stop")
+	power.secondary_stop(pos, mem)
 end

 local State = techage.NodeStates:new({
-	node_name_passive = "techage:boiler2",
+	node_name_passive = "techage:heatexchanger1",
 	cycle_time = CYCLE_TIME,
-	standby_ticks = STANDBY_TICKS,
-	has_item_meter = false,
-	formspec_func = formspec,
+	standby_ticks = 0,
 	can_start = can_start,
 	start_node = start_node,
 	stop_node = stop_node,
 })

-local function get_water(pos)
-	local inv = M(pos):get_inventory()
-	local items = inv:get_stack("water", 1)
-	if items:get_count() > 0 then
-		local taken = items:take_item(1)
-		inv:set_stack("water", 1, items)
-		return true
-	end
-	return false
-end
-
-local function water_temperature(pos, mem)
-	mem.temperature = mem.temperature or 20
-	if mem.fire_trigger then
-		mem.temperature = math.min(mem.temperature + HEAT_STEP, 100)
-	else
-		mem.temperature = math.max(mem.temperature - HEAT_STEP, 20)
-	end
-	mem.fire_trigger = false
-	
-	if mem.water_level == 0 then
-		if get_water(pos) then
-			mem.water_level = 100
-		else
-			mem.temperature = 20
-		end
-	end
-	return mem.temperature
-end
-
-local function steaming(pos, mem, temp)
-	local wc = WATER_CONSUMPTION * (mem.power_ratio or 1)
-	mem.water_level = math.max((mem.water_level or 0) - wc, 0)
-	if temp >= 80 then
-		if mem.running then
-			State:keep_running(pos, mem, COUNTDOWN_TICKS)
-		else
-			State:fault(pos, mem)	
-		end
-	else
-		State:stop(pos, mem)
-		minetest.get_node_timer(pos):start(CYCLE_TIME)
-	end
-end
-
 local function node_timer(pos, elapsed)
+	print("node_timer1")
 	local mem = tubelib2.get_mem(pos)
-	local temp = water_temperature(pos, mem)
-	if State:is_active(mem) then
-		steaming(pos, mem, temp)
+	if mem.running and turbine_cmnd(pos, "power") then
+		mem.capa = mem.capa or 0
+		mem.capa_max = mem.capa_max or 0
+		mem.delivered = mem.delivered or 0
+		mem.delivered = power.secondary_alive(pos, mem, mem.capa, mem.capa_max)
+		mem.capa = mem.capa - mem.delivered
+		mem.capa = in_range(mem.capa, 0, mem.capa_max)
+		glowing(pos, mem, mem.capa > mem.capa_max * 0.8)
+		charging(pos, mem, mem.delivered < 0)
 	end
-	return mem.temperature > 20
-end
-
-local function on_receive_fields(pos, formname, fields, player)
-	if minetest.is_protected(pos, player:get_player_name()) then
-		return
-	end
-	local mem = tubelib2.get_mem(pos)
-	mem.temperature = mem.temperature or 20
-	State:state_button_event(pos, mem, fields)
-	
-	if fields.update then
-		if mem.temperature > 20 then
-			minetest.get_node_timer(pos):start(CYCLE_TIME)
-		end
-		M(pos):set_string("formspec", formspec(State, pos, mem))
-	end
-end
-
-		
-local function on_rightclick(pos)
-	local mem = tubelib2.get_mem(pos)
-	M(pos):set_string("formspec", formspec(State, pos, mem))
+	return mem.running
 end

 local function can_dig(pos, player)
-	local inv = M(pos):get_inventory()
 	local mem = tubelib2.get_mem(pos)
-	return inv:is_empty("input") and not mem.running
-end
-
-local function move_to_water(pos)
-	local inv = M(pos):get_inventory()
-	local water_stack = inv:get_stack("water", 1)
-	local input_stack = inv:get_stack("input", 1)
-	
-	if input_stack:get_name() == "bucket:bucket_empty" then
-		if input_stack:get_count() == 1 then
-			if water_stack:get_count() > 0 then
-				water_stack:set_count(water_stack:get_count() - 1)
-				input_stack = ItemStack("bucket:bucket_water")
-				inv:set_stack("water", 1, water_stack)
-				inv:set_stack("input", 1, input_stack)
-			end
-		end
-	elseif water_stack:get_count() < MAX_WATER then
-		if water_stack:get_count() == 0 then
-			water_stack = ItemStack("default:water_source")
-		else
-			water_stack:set_count(water_stack:get_count() + 1)
-		end
-		input_stack = ItemStack("bucket:bucket_empty")
-		inv:set_stack("water", 1, water_stack)
-		inv:set_stack("input", 1, input_stack)
-	end
-end
-
-
-local function allow_metadata_inventory_put(pos, listname, index, stack, player)
-	if minetest.is_protected(pos, player:get_player_name()) then
-		return 0
-	end
-	if listname == "input" and Water[stack:get_name()] then
-		return stack:get_count()
-	end
-	return 0
-end
-
-local function allow_metadata_inventory_take(pos, listname, index, stack, player)
-	if minetest.is_protected(pos, player:get_player_name()) then
-		return 0
-	end
-	if listname == "input" then
-		return stack:get_count()
-	end
-	return 0
+	return not mem.running
 end

 local function orientate_node(pos, name)
@ -242,73 +223,10 @@ minetest.register_node("techage:heatexchanger3", {
 		"techage_filling_ta4.png^techage_frameT_ta4.png^techage_appl_ribsT.png",
 		"techage_filling_ta4.png^techage_frameT_ta4.png^techage_appl_ribsT.png",
 	},
+	
 	after_place_node = function(pos, placer)
 		return orientate_node(pos, "techage:heatexchanger2")
 	end,
-	paramtype2 = "facedir",
-	groups = {crumbly = 2, cracky = 2, snappy = 2},
-	--on_rotate = screwdriver.disallow,
-	is_ground_content = false,
-	sounds = default.node_sound_metal_defaults(),
-})
-
-- Middle
-minetest.register_node("techage:heatexchanger2", {
-	description = S("TA4 Heat Exchanger 2"),
-	tiles = {
-		-- up, down, right, left, back, front
-		"techage_hole_ta4.png",
-		"techage_hole_ta4.png",
-		"techage_filling_ta4.png^techage_frameM_ta4.png^techage_appl_tes_turb.png",
-		"techage_filling_ta4.png^techage_frameM_ta4.png^techage_appl_tes_core.png",
-		"techage_filling_ta4.png^techage_frameM_ta4.png^techage_appl_ribsM.png",
-		"techage_filling_ta4.png^techage_frameM_ta4.png^techage_appl_ribsM.png",
-	},
-	after_place_node = function(pos, placer)
-		return orientate_node(pos, "techage:heatexchanger1")
-	end,
-	paramtype2 = "facedir",
-	groups = {crumbly = 2, cracky = 2, snappy = 2},
-	--on_rotate = screwdriver.disallow,
-	is_ground_content = false,
-	sounds = default.node_sound_metal_defaults(),
-})
-
-minetest.register_node("techage:heatexchanger1", {
-	description = S("TA4 Heat Exchanger 1"),
-	tiles = {
-		-- up, down, right, left, back, front
-		"techage_hole_ta4.png",
-		"techage_filling_ta4.png^techage_frame_ta4.png",
-		"techage_filling_ta4.png^techage_frameB_ta4.png^techage_appl_hole_biogas.png",
-		"techage_filling_ta4.png^techage_frameB_ta4.png^techage_appl_hole_biogas.png",
-		"techage_filling_ta4.png^techage_frameB_ta4.png^techage_appl_ribsB.png",
-		"techage_filling_ta4.png^techage_frameB_ta4.png^techage_appl_ribsB.png",
-	},
-
-	on_construct = function(pos)
-		tubelib2.init_mem(pos)
-		local inv = M(pos):get_inventory()
-		inv:set_size('water', 1)
-		inv:set_size('input', 1)
-	end,
-	
-	after_place_node = function(pos, placer)
-		if no_space(pos) then
-			minetest.remove_node(pos)
-			return true
-		end
-		-- secondary 'after_place_node', called by power. Don't use tubelib2.init_mem(pos)!!!
-		local mem = tubelib2.get_mem(pos)
-		State:node_init(pos, mem, "")
-		local node = minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z})
-		if node.name == "techage:boiler1" then
-			on_rightclick(pos)
-		end
-	end,
-	
-	after_dig_node = function(pos)
-	end,
 	
 	paramtype2 = "facedir",
 	groups = {crumbly = 2, cracky = 2, snappy = 2},
@ -317,99 +235,137 @@ minetest.register_node("techage:heatexchanger1", {
 	sounds = default.node_sound_metal_defaults(),
 })

-techage.power.register_node({"techage:heatexchanger1", "techage:heatexchanger3"}, {
-	conn_sides = {"R", "L"},
-	power_network  = Pipe,
+-- Middle node with the formspec from the bottom node
+minetest.register_node("techage:heatexchanger2", {
+	description = S("TA4 Heat Exchanger 2"),
+	tiles = {
+		-- up, down, right, left, back, front
+		"techage_hole_ta4.png",
+		"techage_hole_ta4.png",
+		"techage_filling_ta4.png^techage_frameM_ta4.png^techage_appl_tes_turb.png",
+		"techage_filling_ta4.png^techage_frameM_ta4.png^techage_appl_tes_core.png",
+		"techage_filling_ta4.png^techage_frameM_ta4.png^techage_appl_ribsB.png",
+		"techage_filling_ta4.png^techage_frameM_ta4.png^techage_appl_ribsB.png",
+	},
+	
+	selection_box = {
+		type = "fixed",
+		fixed = {-1/2, -1.5/2, -1/2, 1/2, 1/2, 1/2},
+	},
+	
+	after_place_node = function(pos, placer)
+		if orientate_node(pos, "techage:heatexchanger1") then
+			return true
+		end
+		local pos1 = {x = pos.x, y = pos.y - 1, z = pos.z}
+		local mem = tubelib2.get_mem(pos1)
+		local own_num = M(pos1):get_string("node_number")
+		M(pos):set_string("formspec", formspec(State, pos1, mem))
+		M(pos):set_string("infotext", S("TA4 Heat Exchanger").." "..own_num)
+	end,
+	
+	on_rightclick = function(pos)
+		local pos1 = {x = pos.x, y = pos.y - 1, z = pos.z}
+		local mem = tubelib2.get_mem(pos1)
+		M(pos):set_string("formspec", formspec(State, pos1, mem))
+	end,
+	
+	on_receive_fields = function(pos, formname, fields, player)
+		if minetest.is_protected(pos, player:get_player_name()) then
+			return
+		end
+		local pos1 = {x = pos.x, y = pos.y - 1, z = pos.z}
+		local mem = tubelib2.get_mem(pos1)
+		State:state_button_event(pos1, mem, fields)
+		M(pos):set_string("formspec", formspec(State, pos1, mem))
+	end,
+
+	paramtype2 = "facedir",
+	groups = {crumbly = 2, cracky = 2, snappy = 2},
+	on_rotate = screwdriver.disallow,
+	is_ground_content = false,
+	sounds = default.node_sound_metal_defaults(),
+})
+
+-- Base
+minetest.register_node("techage:heatexchanger1", {
+	description = S("TA4 Heat Exchanger 1"),
+	tiles = {
+		-- up, down, right, left, back, front
+		"techage_hole_ta4.png",
+		"techage_filling_ta4.png^techage_frame_ta4.png",
+		"techage_filling_ta4.png^techage_frameB_ta4.png^techage_appl_hole_biogas.png",
+		"techage_filling_ta4.png^techage_frameB_ta4.png^techage_appl_hole_biogas.png",
+		"techage_filling_ta4.png^techage_frameB_ta4.png^techage_appl_hole_electric.png",
+		"techage_filling_ta4.png^techage_frameB_ta4.png^techage_appl_hole_electric.png",
+	},
+	
+	on_construct = tubelib2.init_mem,
+	
+	after_place_node = function(pos, placer)
+		-- secondary 'after_place_node', called by power. Don't use tubelib2.init_mem(pos)!!!
+		local mem = tubelib2.get_mem(pos)
+		local meta = M(pos)
+		local own_num = techage.add_node(pos, "techage:heatexchanger1")
+		meta:set_string("owner", placer:get_player_name())
+		State:node_init(pos, mem, own_num)
+		mem.capa = 0
+	end,
+	
+	on_timer = node_timer,
+	paramtype2 = "facedir",
+	groups = {crumbly = 2, cracky = 2, snappy = 2},
+	on_rotate = screwdriver.disallow,
+	is_ground_content = false,
+	sounds = default.node_sound_metal_defaults(),
+})
+
+techage.power.register_node({"techage:heatexchanger1"}, {
+	conn_sides = {"F", "B"},
+	power_network  = Cable,
+})
+
+Cable:add_secondary_node_names({"techage:heatexchanger1", "techage:heatexchanger3"})
+
+-- for logical communication
+techage.register_node({"techage:heatexchanger1"}, {
+	on_recv_message = function(pos, src, topic, payload)
+		local mem = tubelib2.get_mem(pos)
+		if topic == "capa" then
+			return mem.capa or 0
+		else
+			return State:on_receive_message(pos, topic, payload)
+		end
+	end,
 })


-- boiler2: Main part, needed as generator
--minetest.register_node("techage:heatexchanger3", {
--	description = S("TA4 Heat Exchanger"),
--	tiles = {"techage_boiler2.png"},
--	drawtype = "mesh",
--	mesh = "techage_boiler.obj",
--	selection_box = {
--		type = "fixed",
--		fixed = {-10/32, -48/32, -10/32, 10/32, 16/32, 10/32},
--	},
-	
--	can_dig = can_dig,
--	on_timer = node_timer,
--	allow_metadata_inventory_put = allow_metadata_inventory_put,
--	allow_metadata_inventory_take = allow_metadata_inventory_take,
--	allow_metadata_inventory_move = function(pos) return 0 end,
--	on_receive_fields = on_receive_fields,
--	on_rightclick = on_rightclick,
-	
--	on_construct = function(pos)
--		tubelib2.init_mem(pos)
--		local inv = M(pos):get_inventory()
--		inv:set_size('water', 1)
--		inv:set_size('input', 1)
--	end,
-	
--	after_place_node = function(pos, placer)
--		-- secondary 'after_place_node', called by power. Don't use tubelib2.init_mem(pos)!!!
--		local mem = tubelib2.get_mem(pos)
--		State:node_init(pos, mem, "")
--		local node = minetest.get_node({x=pos.x, y=pos.y-1, z=pos.z})
--		if node.name == "techage:boiler1" then
--			on_rightclick(pos)
--		end
--	end,
-	
--	on_metadata_inventory_put = function(pos)
--		minetest.after(0.5, move_to_water, pos)
--	end,
-	
--	groups = {cracky=1},
--	on_rotate = screwdriver.disallow,
--	is_ground_content = false,
--	sounds = default.node_sound_metal_defaults(),
--})
+minetest.register_craft({
+	output = "techage:heatexchanger1",
+	recipe = {
+		{"default:tin_ingot", "techage:electric_cableS", "default:steel_ingot"},
+		{"techage:ta4_pipeS", "basic_materials:gear_steel", "techage:ta4_pipeS"},
+		{"", "techage:baborium_ingot", ""},
+	},
+})

--techage.power.register_node({"techage:boiler2"}, {
--	conn_sides = {"U"},
--	power_network  = Pipe,
--})
+minetest.register_craft({
+	output = "techage:heatexchanger2",
+	recipe = {
+		{"default:tin_ingot", "", "default:steel_ingot"},
+		{"", "techage:ta4_wlanchip", ""},
+		{"", "techage:baborium_ingot", ""},
+	},
+})

--techage.register_node({"techage:boiler2"}, {
--	on_transfer = function(pos, in_dir, topic, payload)
--		if topic == "trigger" then
--			local mem = tubelib2.get_mem(pos)
--			mem.fire_trigger = true
--			if not minetest.get_node_timer(pos):is_started() then
--				minetest.get_node_timer(pos):start(CYCLE_TIME)
--			end
--			if mem.running then
--				mem.power_ratio = techage.transfer(pos, 6, "trigger", nil, Pipe, {
--						"techage:cylinder", "techage:cylinder_on"}) or 0
--				return mem.power_ratio
--			else
--				return 0
--			end
--		end
--	end
--})
-
--minetest.register_craft({
--	output = "techage:boiler1",
--	recipe = {
--		{"techage:iron_ingot", "", "techage:iron_ingot"},
--		{"default:bronze_ingot", "", "default:bronze_ingot"},
--		{"techage:iron_ingot", "default:bronze_ingot", "techage:iron_ingot"},
--	},
--})
-
--minetest.register_craft({
--	output = "techage:boiler2",
--	recipe = {
--		{"techage:iron_ingot", "techage:steam_pipeS", "techage:iron_ingot"},
--		{"default:bronze_ingot", "", "default:bronze_ingot"},
--		{"techage:iron_ingot", "", "techage:iron_ingot"},
--	},
--})
+minetest.register_craft({
+	output = "techage:heatexchanger3",
+	recipe = {
+		{"default:tin_ingot", "dye:blue", "default:steel_ingot"},
+		{"techage:ta4_pipeS", "basic_materials:gear_steel", "techage:ta4_pipeS"},
+		{"", "techage:baborium_ingot", ""},
+	},
+})

 --techage.register_entry_page("ta2", "boiler1",
 --	S("TA2 Boiler Base"), 
--- a/energy_storage/help.lua
+++ b/energy_storage/help.lua
@ -22,27 +22,23 @@ local PN090 = "techage_gaspipe_knee.png^[transformR90"
 local PN180 = "techage_gaspipe_knee.png^[transformR180"
 local PN270 = "techage_gaspipe_knee.png^[transformR270"
 local HEXR1 = "techage_filling_ta4.png^techage_frameT_ta4.png^techage_appl_ribsT.png"
-local HEXR2 = "techage_filling_ta4.png^techage_frameM_ta4.png^techage_appl_ribsM.png"
-local HEXR3 = "techage_filling_ta4.png^techage_frameB_ta4.png^techage_appl_ribsB.png"
+local HEXR2 = "techage_filling_ta4.png^techage_frameM_ta4.png^techage_appl_ribsB.png"
+local HEXR3 = "techage_filling_ta4.png^techage_frameB_ta4.png^techage_appl_hole_electric.png"
 local TURBN = "techage_filling_ta4.png^techage_appl_turbine.png^techage_frame_ta4.png"
 local GENER = "techage_filling_ta4.png^techage_frame_ta4.png^techage_appl_generator.png^[transformFX]"
 local GRAVL = "default_gravel.png"
-local FAN   = "techage_filling_ta4.png^techage_appl_compressor.png^techage_frame_ta4.png"
-local COREE = "techage_tes_core_elem.png"
-local INLET = "techage_tes_inlet_help.png"
-local CPI00 = "basic_materials_concrete_block.png^techage_gaspipe.png"
-local CPI90 = "basic_materials_concrete_block.png^techage_gaspipe.png^[transformR90"
+local INLET = "basic_materials_concrete_block.png^techage_gaspipe.png^[transformR90"
+local GLASS = "default_obsidian_glass.png"

 local Images = {
-	{false, false, false, false, false, false, false, false, false, false, false, false},
-	{CONCR, CONCR, CONCR, CONCR, CONCR, CONCR, CONCR, false, false, false, false, false},
-	{CONCR, GRAVL, GRAVL, GRAVL, GRAVL, GRAVL, CONCR, false, false, false, false, false},
-	{CONCR, GRAVL, GRAVL, PN000, PIPEH, PIPEH, CPI00, PIPEH, HEXR1, PIPEH, PN270, false},
-	{CONCR, GRAVL, GRAVL, COREE, GRAVL, GRAVL, CONCR, false, HEXR2, false, PIPEV, false},
-	{CONCR, GRAVL, GRAVL, PN090, PIPEH, PIPEH, CPI00, PIPEH, HEXR3, PIPEH, TURBN, GENER},
-	{CONCR, GRAVL, GRAVL, INLET, GRAVL, GRAVL, CONCR, false, false, false, false, false},
-	{CONCR, CONCR, CONCR, CPI90, CONCR, CONCR, CONCR, false, PN000, FAN,   false, false},
-	{false, false, false, PN090, PIPEH, PIPEH, PIPEH, PIPEH, PN180, false, false, false},
+	{false, false, false, false, false, false, false, false, false, false, false},
+	{false, false, false, PN000, PIPEH, PIPEH, PN270, false, false, false, false},
+	{false, CONCR, CONCR, INLET, CONCR, CONCR, PIPEV, false, false, false, false},
+	{false, CONCR, GRAVL, GRAVL, GRAVL, CONCR, PN090, HEXR1, PIPEH, PN270, false},
+	{false, GLASS, GRAVL, GRAVL, GRAVL, CONCR, false, HEXR2, false, PIPEV, false},
+	{false, CONCR, GRAVL, GRAVL, GRAVL, CONCR, PN000, HEXR3, PIPEH, TURBN, GENER},
+	{false, CONCR, CONCR, INLET, CONCR, CONCR, PIPEV, false, false, false, false},
+	{false, false, false, PN090, PIPEH, PIPEH, PN180, false, false, false, false},
 }

 techage.register_category_page("ta4es",
--- a/energy_storage/inlet.lua
+++ b/energy_storage/inlet.lua
@ -106,6 +106,25 @@ local function check_volume(pos, in_dir, owner)
 	return true
 end

+-- provide position behind the obsidian_glass
+local function check_window(pos, in_dir)
+	local radius = get_radius(pos, in_dir)
+	if radius then
+		local dir = tubelib2.Dir6dToVector[in_dir]
+		local cpos = vector.add(pos, vector.multiply(dir, radius))
+		-- calculate size
+		local pos1 = {x = cpos.x - radius, y = cpos.y - radius, z = cpos.z - radius}
+		local pos2 = {x = cpos.x + radius, y = cpos.y + radius, z = cpos.z + radius}
+		local poses,_ = minetest.find_nodes_in_area(pos1, pos2, {"default:obsidian_glass"})
+		if #poses == 1 then
+			local ndir = vector.direction(poses[1], cpos)
+			ndir = vector.normalize(ndir)
+			local npos = vector.add(poses[1], ndir)
+			return npos
+		end
+	end
+end
+
 -- for logical communication
 techage.register_node({"techage:ta4_pipe_inlet"}, {
 	on_transfer = function(pos, in_dir, topic, payload)
@ -113,6 +132,8 @@ techage.register_node({"techage:ta4_pipe_inlet"}, {
 			return get_radius(pos, in_dir)
 		elseif topic == "volume" then
 			return check_volume(pos, in_dir, payload)
+		elseif topic == "window" then
+			return check_window(pos, in_dir)
 		end
 		return false
 	end
--- a/energy_storage/nodes.lua
+++ b/energy_storage/nodes.lua
@ -8,7 +8,7 @@
 	GPL v3
 	See LICENSE.txt for more information
 	
-	TA4 Heat Exchanger
+	TA4 Nodes

 ]]--

@ -17,10 +17,8 @@ local P = minetest.string_to_pos
 local M = minetest.get_meta
 local S = techage.S

-local Pipe = techage.BiogasPipe
-
 minetest.register_node("techage:glow_gravel", {
-	description = "Techage Gravel",
+	description = S("Techage Gravel"),
 	tiles = {{
 		name = "techage_gravel4.png",
 		animation = {
@ -37,16 +35,3 @@ minetest.register_node("techage:glow_gravel", {
 	drop = "",
 })

-minetest.register_node("techage:ta4_tes_coreelem", {
-	description = S("TA4 TES Core Element"),
-	tiles = {
-		-- up, down, right, left, back, front
-		"techage_tes_core_elem_top.png",
-		"techage_tes_core_elem_top.png",
-		"techage_tes_core_elem.png",
-	},
-	groups = {crumbly = 2, cracky = 2, snappy = 2},
-	is_ground_content = false,
-	sounds = default.node_sound_metal_defaults(),
-})
-
--- a/energy_storage/turbine.lua
+++ b/energy_storage/turbine.lua
@ -16,12 +16,9 @@
 local M = minetest.get_meta
 local S = techage.S

-local Pipe = techage.SteamPipe
+local CYCLE_TIME = 2

-local function transfer_generator(pos, topic, payload)
-	return techage.transfer(pos, "R", topic, payload, nil, 
-			{"techage:ta4_generator", "techage:ta4_generator_on"})
-end
+local Pipe = techage.BiogasPipe

 local function swap_node(pos, name)
 	local node = minetest.get_node(pos)
@ -37,9 +34,8 @@ local function play_sound(pos)
 	if mem.running then
 		mem.handle = minetest.sound_play("techage_turbine", {
 			pos = pos, 
-			gain = 1,
-			max_hear_distance = 15})
-		minetest.after(2, play_sound, pos)
+			gain = 0.5,
+			max_hear_distance = 10})
 	end
 end

@ -51,27 +47,48 @@ local function stop_sound(pos)
 	end
 end

-- called with any pipe change
-local function after_tube_update(node, pos, out_dir, peer_pos, peer_in_dir)
-	local mem = tubelib2.get_mem(pos)
-	swap_node(pos, "techage:ta4_turbine")
-	mem.running = false
-	stop_sound(pos)
+local function generator_cmnd(pos, cmnd)
+	return techage.transfer(
+		pos, 
+		"R",  -- outdir
+		cmnd,  -- topic
+		nil,  -- payload
+		nil,  -- network
+		{"techage:ta4_generator", "techage:ta4_generator_on"})
 end

+-- to detect the missing "steam pressure"
+local function node_timer(pos, elapsed)
+	local mem = tubelib2.get_mem(pos)
+	mem.remote_trigger = (mem.remote_trigger or 0) - 1
+	if mem.remote_trigger <= 0 then
+		swap_node(pos, "techage:ta4_turbine")
+		stop_sound(pos)
+		mem.running = false
+	end
+	play_sound(pos)
+	return true
+end
+
+
 minetest.register_node("techage:ta4_turbine", {
 	description = S("TA4 Turbine"),
 	tiles = {
 		-- up, down, right, left, back, front
-		"techage_filling_ta4.png^techage_frame_ta4_top.png^techage_steam_hole.png",
+		"techage_filling_ta4.png^techage_frame_ta4_top.png^techage_appl_hole_biogas.png",
 		"techage_filling_ta4.png^techage_frame_ta4.png",
 		"techage_filling_ta4.png^techage_appl_open.png^techage_frame_ta4.png",
-		"techage_filling_ta4.png^techage_frame_ta4.png^techage_steam_hole.png",
+		"techage_filling_ta4.png^techage_frame_ta4.png^techage_appl_hole_biogas.png",
 		"techage_filling_ta4.png^techage_appl_turbine.png^techage_frame_ta4.png",
 		"techage_filling_ta4.png^techage_appl_turbine.png^techage_frame_ta4.png",
 	},
-	on_construct = tubelib2.init_mem,
+	after_place_node = function(pos, placer)
+		local mem = tubelib2.init_mem(pos)
+		mem.running = false
+		mem.remote_trigger = 0
+	end,

+	on_timer = node_timer,
 	paramtype2 = "facedir",
 	groups = {cracky=2, crumbly=2, choppy=2},
 	on_rotate = screwdriver.disallow,
@ -82,10 +99,10 @@ minetest.register_node("techage:ta4_turbine", {
 minetest.register_node("techage:ta4_turbine_on", {
 	tiles = {
 		-- up, down, right, left, back, front
-		"techage_filling_ta4.png^techage_frame_ta4_top.png^techage_steam_hole.png",
+		"techage_filling_ta4.png^techage_frame_ta4_top.png^techage_appl_hole_biogas.png",
 		"techage_filling_ta4.png^techage_frame_ta4.png",
 		"techage_filling_ta4.png^techage_appl_open.png^techage_frame_ta4.png",
-		"techage_filling_ta4.png^techage_frame_ta4.png^techage_steam_hole.png",
+		"techage_filling_ta4.png^techage_frame_ta4.png^techage_appl_hole_biogas.png",
 		{
 			image = "techage_filling4_ta4.png^techage_appl_turbine4.png^techage_frame4_ta4.png",
 			backface_culling = false,
@ -107,8 +124,13 @@ minetest.register_node("techage:ta4_turbine_on", {
 			},
 		},
 	},
-	after_tube_update = after_tube_update,
 	
+	on_rightclick = function(pos)
+		minetest.get_node_timer(pos):start(CYCLE_TIME)
+	end,
+	
+	on_timer = node_timer,
+	drop = "",
 	paramtype2 = "facedir",
 	groups = {not_in_creative_inventory=1},
 	diggable = false,
@ -127,30 +149,26 @@ techage.power.register_node({"techage:ta4_turbine", "techage:ta4_turbine_on"}, {
 techage.register_node({"techage:ta4_turbine", "techage:ta4_turbine_on"}, {
 	on_transfer = function(pos, in_dir, topic, payload)
 		local mem = tubelib2.get_mem(pos)
-		if topic == "trigger" then
-			return transfer_generator(pos, topic, payload)
+		if topic == "power" then
+			mem.remote_trigger = 2
+			return generator_cmnd(pos, topic)
 		elseif topic == "start" then
-			if transfer_cooler(pos, topic, payload) then
-				swap_node(pos, "techage:ta4_turbine_on")
-				mem.running = true
-				play_sound(pos)
-				return true
-			end
-			return false
-		elseif topic == "running" then
-			if not transfer_cooler(pos, topic, payload) then
-				swap_node(pos, "techage:ta4_turbine")
-				mem.running = false
-				stop_sound(pos)
-				return false
-			end
-			return true
+			mem.remote_trigger = 2
+			swap_node(pos, "techage:ta4_turbine_on")
+			mem.running = true
+			minetest.get_node_timer(pos):start(CYCLE_TIME)
+			play_sound(pos)
+			return generator_cmnd(pos, topic)
 		elseif topic == "stop" then
-			transfer_cooler(pos, topic, payload)
 			swap_node(pos, "techage:ta4_turbine")
 			mem.running = false
+			mem.remote_trigger = 0
+			minetest.get_node_timer(pos):stop()
 			stop_sound(pos)
-			return true
+			return generator_cmnd(pos, topic)
+		elseif topic == "trigger" then
+			mem.remote_trigger = 2
+			return generator_cmnd(pos, topic)
 		end
 	end
 })
@ -158,24 +176,13 @@ techage.register_node({"techage:ta4_turbine", "techage:ta4_turbine_on"}, {
 minetest.register_craft({
 	output = "techage:ta4_turbine",
 	recipe = {
-		{"basic_materials:steel_bar", "techage:steam_pipeS", "default:wood"},
-		{"techage:steam_pipeS", "basic_materials:gear_steel", ""},
-		{"default:wood", "techage:iron_ingot", "basic_materials:steel_bar"},
+		{"", "dye:blue", ""},
+		{"", "techage:turbine", ""},
+		{"", "techage:ta4_wlanchip", ""},
 	},
 })

 techage.register_entry_page("ta4es", "turbine",
-	S("TA3 Turbine"), 
-	S("Part of the Power Station. Has to be placed side by side with the TA3 Generator.@n"..
-		"(see TA3 Power Station)"), 
+	S("TA4 Turbine"), 
+	S("Part of TA4 Energy Systems. Has to be placed side by side with the TA4 Generator.@n"), 
 	"techage:ta4_turbine")
-
-minetest.register_lbm({
-	label = "[techage] Turbine sound",
-	name = "techage:power_station",
-	nodenames = {"techage:ta4_turbine_on"},
-	run_at_every_load = true,
-	action = function(pos, node)
-		play_sound(pos)
-	end
-})
--- a/init.lua
+++ b/init.lua
@ -194,11 +194,11 @@ else
 	dofile(MP.."/wind_turbine/signallamp.lua")
 	
 	-- TA4 Energy Storage
--	dofile(MP.."/energy_storage/heatexchanger.lua")
--	dofile(MP.."/energy_storage/generator.lua")
--	dofile(MP.."/energy_storage/turbine.lua")
--	dofile(MP.."/energy_storage/inlet.lua")
--	dofile(MP.."/energy_storage/nodes.lua")
--	dofile(MP.."/energy_storage/help.lua")
+	dofile(MP.."/energy_storage/heatexchanger.lua")
+	dofile(MP.."/energy_storage/generator.lua")
+	dofile(MP.."/energy_storage/turbine.lua")
+	dofile(MP.."/energy_storage/inlet.lua")
+	dofile(MP.."/energy_storage/nodes.lua")
+	dofile(MP.."/energy_storage/help.lua")
 	
 end
--- a/power/junction.lua
+++ b/power/junction.lua
@ -67,7 +67,7 @@ function techage.register_junction(name, size, boxes, network, node, index)
 		ndef.paramtype = "light" 
 		ndef.sunlight_propagates = true 
 		ndef.is_ground_content = false 
-		ndef.drop = name.."0" 
+		ndef.drop = name..(index or "0")
 		minetest.register_node(name..idx, ndef)
 		-- Register in addition for power distribution
 		techage.power.register_node({name..idx}, {power_network = network})
--- a/power/power.lua
+++ b/power/power.lua
@ -508,7 +508,8 @@ end

 -- Power terminal function
 function techage.power.power_accounting(pos, mem)
-	if mem.pwr_master_pos then
+	if mem.pwr_master_pos and (mem.pwr_power_provided_cnt or 0) > 0 then
+		mem.pwr_power_provided_cnt = (mem.pwr_power_provided_cnt or 0) - 1
 		mem = tubelib2.get_mem(mem.pwr_master_pos)
 		return {
 			prim_available = mem.mst_available1 or 0,
--- a/power/power_line.lua
+++ b/power/power_line.lua
@ -163,8 +163,7 @@ minetest.register_node("techage:power_lineA", {
 })

 minetest.register_node("techage:power_pole", {
-	description = S("TA Power Pole Top 4"),
-	--tiles = {"techage_power_pole.png"},
+	description = S("TA Power Pole Top (for up to 6 connections)"),
 	tiles = {
 		"default_wood.png^techage_power_pole_top.png",
 		"default_wood.png^techage_power_pole_top.png",
@ -191,7 +190,43 @@ minetest.register_node("techage:power_pole", {
 			minetest.remove_node(pos)
 			return true
 		end
+		local node = minetest.get_node(pos)
+		node.name = "techage:power_pole_conn"
+		minetest.swap_node(pos, node)
 	end,
+	
+	on_rotate = screwdriver.disallow, -- important!
+	paramtype = "light",
+	sunlight_propagates = true,
+	is_ground_content = false,
+	groups = {cracky=2, crumbly=2, choppy=2},
+})
+
+minetest.register_node("techage:power_pole_conn", {
+	description = S("TA Power Pole Top 4 conn"),
+	tiles = {
+		"default_wood.png^techage_power_pole_top.png",
+		"default_wood.png^techage_power_pole_top.png",
+		"default_wood.png^techage_power_pole.png"
+	},
+	
+	paramtype2 = "facedir", -- important!
+	drawtype = "nodebox",
+	node_box = {
+		type = "connected",
+		fixed = {{ -4/32, -16/32,  -4/32,   4/32, 16/32,   4/32}},
+		
+		connect_left = {{-16/32, -6/32, -1/32,  1/32,  -4/32, 1/32},	
+			{-16/32, -4/32, -2/32, -12/32, 4/32, 2/32}},
+		connect_right = {{ -1/32, -6/32, -1/32,  16/32, -4/32, 1/32},	
+			{12/32, -4/32, -2/32,  16/32, 4/32, 2/32}},
+		connect_back = {{-1/32, -6/32,  -1/32,  1/32, -4/32, 16/32},
+			{-2/32, -4/32, 12/32, 2/32, 4/32, 16/32}},
+		connect_front = {{-1/32, -6/32, -16/32,  1/32, -4/32, 1/32},
+			{-2/32, -4/32, -16/32,  2/32, 4/32, -12/32}},
+	},
+	connects_to = {"techage:power_line", "techage:power_lineS", "techage:power_lineA"},
+
 	can_dig = function(pos, digger)
 		local meta = minetest.get_meta(pos)
 		if meta:get_string("owner") == digger:get_player_name() then
@ -203,17 +238,17 @@ minetest.register_node("techage:power_pole", {
 		return false
 	end,
 	
+	drop = "techage:power_pole",
 	on_rotate = screwdriver.disallow, -- important!
 	paramtype = "light",
 	sunlight_propagates = true,
 	is_ground_content = false,
-	groups = {cracky=2, crumbly=2, choppy=2},
+	groups = {cracky=2, crumbly=2, choppy=2, not_in_creative_inventory = 1},
 	sounds = default.node_sound_defaults(),
 })

 minetest.register_node("techage:power_pole2", {
-	description = S("TA Power Pole Top 2"),
-	--tiles = {"techage_power_pole.png"},
+	description = S("TA Power Pole Top 2 (for landlines)"),
 	tiles = {
 		"default_wood.png^techage_power_pole_top.png",
 		"default_wood.png^techage_power_pole_top.png",
@ -296,7 +331,7 @@ minetest.register_node("techage:power_pole3", {
 	sounds = default.node_sound_defaults(),
 })

-techage.power.register_node({"techage:power_pole"}, {
+techage.power.register_node({"techage:power_pole", "techage:power_pole_conn"}, {
 	power_network  = Cable,
 })

--- a/textures/techage_appl_tes_core.png
+++ b/textures/techage_appl_tes_core.png
--- a/tools/repairkit.lua
+++ b/tools/repairkit.lua
@ -72,9 +72,9 @@ local function read_state(itemstack, user, pointed_thing)
 				if load and load ~= "" and load ~= "unsupported" then
 					minetest.chat_send_player(user:get_player_name(), ndef.description.." "..number..": load = "..load.." %    ")
 				end
-				local power = techage.send_single("0", number, "power", nil)
-				if power and power ~= "" and power ~= "unsupported" then
-					minetest.chat_send_player(user:get_player_name(), ndef.description.." "..number..": power = "..power.." %    ")
+				local capa = techage.send_single("0", number, "capa", nil)
+				if capa and capa ~= "" and capa ~= "unsupported" then
+					minetest.chat_send_player(user:get_player_name(), ndef.description.." "..number..": capa = "..capa.." %    ")
 				end
 				local owner = M(pos):get_string("owner") or ""
 				if owner ~= "" then
--- a/wind_turbine/rotor.lua
+++ b/wind_turbine/rotor.lua
@ -235,8 +235,11 @@ techage.power.register_node({"techage:ta4_wind_turbine"}, {
 techage.register_node({"techage:ta4_wind_turbine"}, {	
 	on_recv_message = function(pos, src, topic, payload)
 		local mem = tubelib2.get_mem(pos)
-		print("on_recv_message", topic)
 		if topic == "state" then
+			local node = minetest.get_node(pos)
+			if node.name == "ignore" then  -- unloaded node?
+				return "unloaded"
+			end
 			if mem.error then
 				return "error"
 			elseif mem.running and mem.providing then