diff --git a/README.md b/README.md
index 8d10dc7..89767b1 100644
--- a/README.md
+++ b/README.md
@@ -4,12 +4,13 @@
 
 ## Minetest goes Hyperloop!
 
-* It allows travelling from point point in seconds (900 km/h) :-)
+The fast and modern way of traveling.
+* Hyperloop allows travelling from point point in seconds (900 km/h) :-)
 * Hyperloop tubes can be build in teamwork together with other players
 * It can be used even on small servers (Raspberry PI) without lagging
 * No configuration or programming of the tube network is necessary (only the station names have to be entered)
 
-The mod includes many different blocks for the tubes, the junctions, the stations, the pod, the ticket/booking machine and the map tool. It also includes a WiFi tube block for very large distances (admin feature).
+The mod includes many different blocks for tubes, junctions, stations, elevators, ticket/booking machine, map tool, station builder, tube robot, and some signs and decoration blocks. It also includes WiFi tube blocks for very large distances (admin feature).
 
 
 Browse on: ![GitHub](https://github.com/joe7575/Minetest-Hyperloop)
@@ -19,12 +20,23 @@ Download: ![GitHub](https://github.com/joe7575/Minetest-Hyperloop/archive/master
 
 ## Introduction
 
-[Contruction Manual](https://github.com/joe7575/Minetest-Hyperloop/wiki)
+Hyperloop is passenger transportation system for travelling through evacuated tubes my means of passenger pods.
+The tubes system with all stations and pods have to be build by the players.
+
+The pods can reach a maximum speed of up to 900 km/h. This requires a tube system on one level. That means all stations from one network have to be on the same level. Therefore, Hyperloop provides an elevator system to reach the station in the underground or in the air, depending on the tube level.
+
+To build a first route with 2 station, craft and place two Hyperloop Station Blocks, add items to the Station Block to build  the Station Pod, place a Booking Machines nearby both stations, and connect the stations by means of Hyperloop Tube blocks. You can use the Hyperloop Tube Robot to simplify the job. 
+
+
+**Some additional facts:**
+
+The tube route is automatically protected. You can dig only the ends of a tube line (head blocks). The junction block / station has to be protected manually.
+
+Junction and Station Blocks can connect up to four tube lines. That means you can build complex networks of tube lines. Each junction/station can be reaches from each point with one trip.
 
 
 ## Still To Do
 
-* configuration settings
 * Admin tool to interrupt tube routes
 
 
diff --git a/description.txt b/description.txt
index 29e3131..e50a363 100644
--- a/description.txt
+++ b/description.txt
@@ -1 +1 @@
-Hyperloop Mod for faster traveling.
\ No newline at end of file
+Hyperloop Mod, the fast and modern way of traveling.
\ No newline at end of file
diff --git a/door.lua b/door.lua
index 46721cd..e72ba61 100644
--- a/door.lua
+++ b/door.lua
@@ -17,7 +17,6 @@
 local function door_on_punch(pos, node, puncher, pointed_thing)
 	local meta = minetest.get_meta(pos)
 	local key_str = meta:get_string("key_str")
-	print("punch  "..key_str)
 	if hyperloop.data.tAllStations[key_str] ~= nil then
 		local station_name = hyperloop.data.tAllStations[key_str].station_name
 		if station_name == nil then
diff --git a/elevator.lua b/elevator.lua
index 96e5689..3583a24 100644
--- a/elevator.lua
+++ b/elevator.lua
@@ -67,7 +67,6 @@ end
 local function remove_elevator_list(pos)
 	local spos = tostring(pos.x)..":"..tostring(pos.z)
 	hyperloop.data.tAllElevators[spos] = nil
-	--print(spos, dump(hyperloop.data.tAllElevators))
 end
 
 -- determine the elevator floor item or create one
@@ -84,7 +83,6 @@ end
 
 -- Add the given arguments to the elevator table
 local function add_to_elevator_list(pos, tArgs)
-	--print("add_to_elevator_list", dump(pos))
 	local floor = get_floor_item(pos)
 	for k,v in pairs(tArgs) do
 		floor[k] = v
@@ -110,7 +108,6 @@ local function floor_list(pos)
 		end)
 	-- check if elevator is complete
 	for idx,floor in ipairs(floors) do
-		--print(idx, #floors, floor.name, floor.up, floor.down)
 		if idx == 1 then
 			if floor.down == false then
 				return {}
@@ -182,7 +179,6 @@ local function remove_from_elevator_list(pos)
 	else
 		-- update all other elevator cars 
 		for _,floor in ipairs(get_elevator_list(pos)) do
-			print(_, floor.name)
 			if floor.name ~= "<unknown>" then
 				update_formspec(floor.pos)
 			end
@@ -193,7 +189,6 @@ end
 function hyperloop.update_elevator(pos)
 	local up = false
 	local down = false
-	--print("update y=", pos.y)
 	
 	pos.y = pos.y - 1
 	if string.find(minetest.get_node_or_nil(pos).name, "hyperloop:shaft") then
@@ -207,11 +202,9 @@ function hyperloop.update_elevator(pos)
 	
 	pos.y = pos.y - 2
 	add_to_elevator_list(pos, {up=up, down=down})
-	--dbg_out("update", pos)
 
 	-- update all elevator cars which are already named
 	for _,floor in ipairs(get_elevator_list(pos)) do
-		print(_, floor.name)
 		if floor.name ~= "<unknown>" then
 			update_formspec(floor.pos)
 		end
@@ -345,7 +338,6 @@ minetest.register_node("hyperloop:elevator_bottom", {
 		-- store floor_pos (lower car block) as meta data
 		set_floor_pos(pos, floor_pos)
 		pos.y = pos.y - 1
-		--dbg_out("after_place_node", pos)
 	end,
 
 	on_receive_fields = function(pos, formname, fields, player)
@@ -359,7 +351,6 @@ minetest.register_node("hyperloop:elevator_bottom", {
 			local floor_pos = get_floor_pos(pos)
 			add_to_elevator_list(floor_pos, {name=floor})
 			hyperloop.update_elevator(floor_pos)
-			--dbg_out("on_receive_fields", floor_pos)
 		-- destination selected?
 		elseif fields.button ~= nil then
 			local floor_pos = get_floor_pos(pos)
@@ -389,12 +380,9 @@ minetest.register_node("hyperloop:elevator_bottom", {
 			minetest.swap_node(pos, node)
 		end
 		pos.y = pos.y + 2
-		--print("pos.y="..pos.y)
 		minetest.remove_node(pos)
 		pos.y = pos.y - 1
 		remove_from_elevator_list(pos)
-		--local facedir = minetest.get_meta(pos):get_int("facedir")
-		--door_command(pos, facedir, "open")
 	end,
 
 })
@@ -470,7 +458,6 @@ minetest.register_node("hyperloop:elevator_door", {
 	on_rightclick = function(pos, node, clicker, itemstack, pointed_thing)
 		local floor_pos = get_floor_pos(pos)
 		local floor = get_floor_item(floor_pos)
-		print(dump(floor.pos), floor.facedir)
 		door_command(floor.pos, floor.facedir, "open")
 	end,
 	
@@ -480,31 +467,3 @@ minetest.register_node("hyperloop:elevator_door", {
 	groups = {snappy = 3, not_in_creative_inventory=1},
 })
 
--------------------------------------------------------
---[[
-local pos = {x=1, y=2, z=3}
-local spos = tostring(pos.x)..":"..tostring(pos.z)
-hyperloop.data.tAllElevators[spos].floors = nil
-
-local floor = get_floor_item(pos)
-dbg_out("1", pos)
-add_to_elevator_list(pos, {name="test1", up=false, down=false, facedir=1, pos=pos})
-dbg_out("2", pos)
-remove_from_elevator_list(pos)
-dbg_out("3", pos)
-add_to_elevator_list(pos, {name="test1", up=false, down=false, facedir=1, pos=pos})
-dbg_out("4", pos)
-add_to_elevator_list(pos, {up=true})
-dbg_out("5", pos)
-print("6: ", dump(floor_list(pos)))
-
-local pos2 = {x=1, y=5, z=3}
-add_to_elevator_list(pos2, {name="test2", up=true, down=true, facedir=1, pos=pos2})
-dbg_out("7", pos2)
-print("8: ", dump(floor_list(pos2)))
-
-local pos3 = {x=1, y=9, z=3}
-add_to_elevator_list(pos3, {name="test3", up=false, down=true, facedir=1, pos=pos3})
-dbg_out("9", pos3)
-print("10: ", dump(floor_list(pos3)))
-]]--
diff --git a/init.lua b/init.lua
index e7634c9..2256cfe 100755
--- a/init.lua
+++ b/init.lua
@@ -18,6 +18,7 @@
 	2017-07-16  v0.05  Doors can be opened manually
 	2017-07-24  v0.06  Tubes with limited slope, elevator and deco blocks added
 	2017-07-28  v0.07  Slope removed, Station auto-builder added
+	2017-07-29  v0.08  Signs added, tube robot added
 
 ]]--
 
@@ -32,12 +33,11 @@ hyperloop = {
 	}
 }
 
-hyperloop.debugging = true
+hyperloop.debugging = false
 
 dofile(minetest.get_modpath("hyperloop") .. "/utils.lua")
 dofile(minetest.get_modpath("hyperloop") .. "/tube.lua")
 dofile(minetest.get_modpath("hyperloop") .. "/booking.lua")
---dofile(minetest.get_modpath("hyperloop") .. "/junction.lua")
 dofile(minetest.get_modpath("hyperloop") .. "/station.lua")
 dofile(minetest.get_modpath("hyperloop") .. "/map.lua")
 dofile(minetest.get_modpath("hyperloop") .. "/door.lua")
diff --git a/map.lua b/map.lua
index 8b65de6..c7ed8ac 100644
--- a/map.lua
+++ b/map.lua
@@ -30,8 +30,8 @@ local function station_list_as_string(pos)
 		print("tAllStations="..dump(sortedList))
 		print("tWifi="..dump(hyperloop.data.tWifi))
 	end
-	--local tRes = {"(player distance: station name (position) seat/machine/owner  =>  directly connected with)\n\n"}
-	local tRes = {"size[12,10]label[0,0;Dist.]label[0.9,0;Station]label[2.5,0;Position]label[4.2,0;State]label[5.6,0;Owner]label[7.1,0;Connected with]"}
+	local tRes = {"label[0,0;Dist.]label[0.9,0;Station/Junction]label[2.7,0;Position]"..
+		          "label[4.7,0;State]label[6.2,0;Owner]label[7.8,0;Directly connected with]"}
 	local state, owner
 	for idx,dataSet in ipairs(sortedList) do
 		if idx == 18 then
@@ -39,10 +39,13 @@ local function station_list_as_string(pos)
 		end
 		local ypos = 0.2 + idx * 0.4
 		if dataSet.station_name ~= nil then
-			state = "completed"
+			state = "Station"
+		elseif dataSet.junction == true then
+			dataSet.station_name = "<no name>"
+			state = "Junction"
 		else
-			dataSet.station_name = ""
-			state = "no Booking M."
+			dataSet.station_name = "<no name>"
+			state = "No Booking M."
 		end
 		if dataSet.owner ~= nil then
 			owner = dataSet.owner
@@ -51,12 +54,16 @@ local function station_list_as_string(pos)
 		end
 		tRes[#tRes+1] = "label[0,"..ypos..";"..dataSet.distance.." m]"
 		tRes[#tRes+1] = "label[0.9,"..ypos..";"..dataSet.station_name.."]"
-		tRes[#tRes+1] = "label[2.5,"..ypos..";"..minetest.pos_to_string(dataSet.pos).."]"
-		tRes[#tRes+1] = "label[4.2,"..ypos..";"..state.."]"
-		tRes[#tRes+1] = "label[5.6,"..ypos..";"..owner.."]"
-		tRes[#tRes+1] = "label[7.1,"..ypos..";"
-		for _,s in ipairs(hyperloop.get_connections(dataSet.key_str)) do
-			tRes[#tRes + 1] = s
+		tRes[#tRes+1] = "label[2.7,"..ypos..";"..minetest.pos_to_string(dataSet.pos).."]"
+		tRes[#tRes+1] = "label[4.7,"..ypos..";"..state.."]"
+		tRes[#tRes+1] = "label[6.2,"..ypos..";"..owner.."]"
+		tRes[#tRes+1] = "label[7.8,"..ypos..";"
+		for _,key_str in ipairs(hyperloop.get_connections(dataSet.key_str)) do
+			if hyperloop.data.tAllStations[key_str].station_name ~= nil then
+				tRes[#tRes + 1] = hyperloop.data.tAllStations[key_str].station_name
+			else
+				tRes[#tRes + 1] = key_str
+			end
 			tRes[#tRes + 1] = ", "
 		end
 		tRes[#tRes] = "]"
@@ -70,11 +77,11 @@ local function map_on_use(itemstack, user)
 	--local pos = user:get_pos()
 	local pos = user:getpos()
 	local sStationList = station_list_as_string(pos)
-	local formspec = "size[10,8]" .. default.gui_bg ..
+	local formspec = "size[12,10]" .. default.gui_bg ..
 	default.gui_bg_img ..
 	"textarea[0.5,0.5;9.5,8;text;Station List:;" ..
 	sStationList .. "]" ..
-	"button_exit[4,7.5;2,1;close;Close]"
+	"button_exit[5,9.5;2,1;close;Close]"
 
 	minetest.show_formspec(player_name, "hyperloop:station_map", formspec)
 	return itemstack
diff --git a/robot.lua b/robot.lua
index b2b0444..169d40d 100644
--- a/robot.lua
+++ b/robot.lua
@@ -44,7 +44,9 @@ local function place_tube(pos, name, facedir, placer)
 	if minetest.is_protected(pos, placer:get_player_name()) then
 		hyperloop.chat(placer, "Area is protected!")
 		return false
-	elseif minetest.get_node_or_nil(pos).name ~= "air" and minetest.get_node_or_nil(pos).name ~= "default:water_source" then
+	elseif minetest.get_node_or_nil(pos).name ~= "air" and 
+		   minetest.get_node_or_nil(pos).name ~= "default:water_source" and
+		   minetest.get_node_or_nil(pos).name ~= "default:water_flowing" then
 		return false
 	end
 	if hyperloop.scan_neighbours(pos) ~= 1 then
@@ -56,25 +58,24 @@ local function place_tube(pos, name, facedir, placer)
 end
 
 local function move_robot(pos, inv, facedir, placer)
-	print("move_robot")
-	if get_inventory_item(inv) then
-		print("get_inventory_item")
-		-- remve robot and replace through tube
-		local stack = get_inventory(pos)
-		minetest.dig_node(pos)
-		place_tube(pos, "hyperloop:tube1", facedir, placer)
-		-- place robot on the new position
-		pos = hyperloop.new_pos(pos, facedir, "1F", 0)
-		if place_tube(pos, "hyperloop:robot", facedir, placer) then
-			inv = set_inventory(pos, stack)
-			print("set_inventory")
-			minetest.after(1, move_robot, pos, inv, facedir, placer)
-		else
-			pos = hyperloop.new_pos(pos, facedir, "1B", 0)
-			minetest.dig_node(pos)
-			place_tube(pos, "hyperloop:robot", facedir, placer)
-			stack:add_item("src", ItemStack("hyperloop:tube0"))
-			set_inventory(pos, stack)
+	if minetest.get_meta(pos):get_int("stopped") ~= 1 then
+		if get_inventory_item(inv) then
+			-- remve robot and replace through tube
+			local stack = get_inventory(pos)
+			minetest.remove_node(pos)
+			place_tube(pos, "hyperloop:tube1", facedir, placer)
+			-- place robot on the new position
+			pos = hyperloop.new_pos(pos, facedir, "1F", 0)
+			if place_tube(pos, "hyperloop:robot", facedir, placer) then
+				inv = set_inventory(pos, stack)
+				minetest.after(1, move_robot, pos, inv, facedir, placer)
+			else
+				pos = hyperloop.new_pos(pos, facedir, "1B", 0)
+				minetest.remove_node(pos)
+				place_tube(pos, "hyperloop:robot", facedir, placer)
+				stack:add_item("src", ItemStack("hyperloop:tube0"))
+				set_inventory(pos, stack)
+			end
 		end
 	end
 end
@@ -93,12 +94,12 @@ minetest.register_node("hyperloop:robot", {
 	description = "Hyperloop Tube Robot",
 	tiles = {
 		-- up, down, right, left, back, front
-		"hyperloop_robot.png^[transformR90]",
-		"hyperloop_robot.png^[transformR90]",
-		"hyperloop_robot.png",
-		"hyperloop_robot.png",
 		"hyperloop_robot.png",
 		"hyperloop_robot.png",
+		"hyperloop_robot2.png",
+		"hyperloop_robot2.png",
+		"hyperloop_robot2.png",
+		"hyperloop_robot2.png",
 	},
 		
 	after_place_node = function(pos, placer, itemstack, pointed_thing)
@@ -126,12 +127,25 @@ minetest.register_node("hyperloop:robot", {
 		local meta = minetest.get_meta(pos)
 		local inv = meta:get_inventory()
 		local facedir = meta:get_int("facedir")
+		meta:set_int("stopped", 0)
 		minetest.after(1, move_robot, pos, inv, facedir, player)
 	end,
 	
+	on_punch = function(pos, node, puncher, pointed_thing)
+		if minetest.is_protected(pos, puncher:get_player_name()) then
+			return
+		end
+		local meta = minetest.get_meta(pos)
+		meta:set_int("stopped", 1)
+	end,
+		
 	on_dig = function(pos, node, puncher, pointed_thing)
+		if minetest.is_protected(pos, puncher:get_player_name()) then
+			return
+		end
 		local meta = minetest.get_meta(pos)
 		local inv = meta:get_inventory()
+		meta:set_int("stopped", 1)
 		if inv:is_empty("src") then
 			minetest.node_dig(pos, node, puncher, pointed_thing)
 		end
diff --git a/seat.lua b/seat.lua
index d4a812a..d8046d0 100644
--- a/seat.lua
+++ b/seat.lua
@@ -11,10 +11,6 @@
 ]]--
 
 
-----------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------
-
-
 local function enter_display(tStation, text)
     -- determine position
     local lcd_pos = hyperloop.new_pos(tStation.pos, tStation.facedir, "1F", 2)
@@ -46,7 +42,6 @@ local function on_open_door(tArrival)
 	minetest.after(5.0, on_final_close_door, tArrival, tArrival.facedir)
 end
 
-----------------------------------------------------------------------------------------------------
 local function on_arrival(tDeparture, tArrival, player, snd)
 	-- activate display
 	local text = " | Welcome at | | "..string.sub(tArrival.station_name, 1, 13)
@@ -75,7 +70,6 @@ local function on_arrival(tDeparture, tArrival, player, snd)
 	minetest.after(6.0, on_open_door, tArrival)
 end
 
-----------------------------------------------------------------------------------------------------
 local function on_travel(tDeparture, tArrival, player, atime)
 	-- play sound and switch door state
 	local snd = minetest.sound_play("normal2", {
@@ -89,7 +83,6 @@ local function on_travel(tDeparture, tArrival, player, atime)
 	minetest.after(atime, on_final_close_door, tDeparture)
 end
 
-----------------------------------------------------------------------------------------------------
 local function display_timer(pos, elapsed)
 	-- update display with trip data
 	local meta = minetest.get_meta(pos)
@@ -119,14 +112,12 @@ local function meter_to_km(dist)
 	end
 end
 
-----------------------------------------------------------------------------------------------------
 -- place the player, close the door, activate display
 local function on_start_travel(pos, node, clicker)
 	-- departure data
 	local meta = minetest.get_meta(pos)
 	local key_str = meta:get_string("key_str")
 	local tDeparture = hyperloop.get_station_data(key_str)
-	print("tDeparture: "..dump(tDeparture))
 	-- arrival data
 	key_str = hyperloop.data.booking[tDeparture.key_str]
 	if key_str == nil then
@@ -134,7 +125,6 @@ local function on_start_travel(pos, node, clicker)
 		return
 	end
 	local tArrival = hyperloop.get_station_data(key_str)
-	print("tArrival: "..dump(tArrival))
 	-- delete booking
 	hyperloop.data.booking[tDeparture.key_str] = nil
 	if tArrival == nil then
@@ -180,9 +170,6 @@ local function on_start_travel(pos, node, clicker)
 	minetest.after(4.9, on_travel, tDeparture, tArrival, clicker, atime)
 end
 
-	
-
-
 -- Hyperloop Seat
 minetest.register_node("hyperloop:seat", {
 	description = "Hyperloop Pod Seat",
diff --git a/station.lua b/station.lua
index fda3137..2336ce1 100644
--- a/station.lua
+++ b/station.lua
@@ -56,12 +56,6 @@
 		- booking_pos = nil
 		- booking_info = nil
 		
-	Once a day:
-		for key,item in tAllStations
-			if node(item(pos)) ~= station
-				del item
-				
-			
 ]]--
 
 -- Station Pod Assembly Plan
@@ -143,7 +137,6 @@ function hyperloop.get_station_data(key_str)
 	return nil
 end
 
--- used for station and junction blocks
 local function store_station(pos, placer)
 	local key_str = hyperloop.get_key_str(pos)
 	local facedir = hyperloop.get_facedir(placer)
@@ -159,6 +152,17 @@ local function store_station(pos, placer)
 	}
 end
 
+local function store_junction(pos, placer)
+	local key_str = hyperloop.get_key_str(pos)
+	hyperloop.data.tAllStations[key_str] = {
+		version=2,							-- for version checks
+		pos=pos, 							-- station/junction block
+		routes={}, 							-- will be calculated later
+		owner=placer:get_player_name(), 
+		junction=true,
+	}
+end
+
 -- used for station and junction blocks
 local function delete_station(pos)
 	local key_str = hyperloop.get_key_str(pos)
@@ -361,14 +365,6 @@ minetest.register_node("hyperloop:station", {
 		hyperloop.data.change_counter = hyperloop.data.change_counter + 1
 	end,
 
---	on_punch = function(pos, node, puncher, pointed_thing)
---		local meta = minetest.get_meta(pos)
---		local inv = meta:get_inventory()
---		if inv:is_empty("src") and meta:get_int("built") ~= 1 then
---			minetest.node_punch(pos, node, puncher, pointed_thing)
---		end
---	end,
-
 	on_dig = function(pos, node, puncher, pointed_thing)
 		local meta = minetest.get_meta(pos)
 		local inv = meta:get_inventory()
@@ -416,7 +412,7 @@ minetest.register_node("hyperloop:junction", {
 		hyperloop.check_network_level(pos, placer)
 		local meta = minetest.get_meta(pos)
 		meta:set_string("infotext", "Position "..hyperloop.get_key_str(pos))
-		store_station(pos, placer)
+		store_junction(pos, placer)
 		store_routes(pos)
 		hyperloop.data.change_counter = hyperloop.data.change_counter + 1
 	end,
diff --git a/textures/hyperloop_robot.png b/textures/hyperloop_robot.png
index 7e85e7e..892e141 100644
Binary files a/textures/hyperloop_robot.png and b/textures/hyperloop_robot.png differ
diff --git a/tube.lua b/tube.lua
index 9011220..9be9d3f 100644
--- a/tube.lua
+++ b/tube.lua
@@ -76,7 +76,7 @@ end
 
 -- Degrade one node.
 -- Needed when a new node is placed nearby.
-function hyperloop.degrade_tupe_node(node)
+function hyperloop.degrade_tupe_node(node, new_node_pos)
 	if node.name == "hyperloop:tube0" then
 		node.name = "hyperloop:tube1"
 	elseif node.name == "hyperloop:tube1" then
@@ -86,6 +86,9 @@ function hyperloop.degrade_tupe_node(node)
 	else
 		return
 	end
+	-- determine the correct tube facedir
+	local dir = vector.subtract(node.pos, new_node_pos)
+	node.param2 = minetest.dir_to_facedir(dir)
 	minetest.swap_node(node.pos, node)
 end
 
@@ -150,7 +153,7 @@ local function head_node(node, old_head)
 	node.param2 = minetest.dir_to_facedir(dir)
 	minetest.swap_node(node.pos, node)
 	-- degrade old head
-	hyperloop.degrade_tupe_node(old_head)
+	hyperloop.degrade_tupe_node(old_head, node.pos)
 	return true
 end
 
@@ -171,8 +174,8 @@ local function link_node(node, node1, node2)
 		node.diggable = true
 		minetest.swap_node(node.pos, node)
 		-- degrade both nodes
-		hyperloop.degrade_tupe_node(node1)
-		hyperloop.degrade_tupe_node(node2)
+		hyperloop.degrade_tupe_node(node1, node.pos)
+		hyperloop.degrade_tupe_node(node2, node.pos)
 		return true
 	end
 	return false
diff --git a/utils.lua b/utils.lua
index d8443c2..38e1cca 100644
--- a/utils.lua
+++ b/utils.lua
@@ -41,39 +41,6 @@ function hyperloop.chat(player, text)
 	end
 end
 
---function hyperloop.rad_to_placedir(yaw)
---	-- radiant (0..2*PI) to my placedir (0..3) from N, W, S, E
---	return math.floor((yaw + PI/4) / PI * 2) % 4
---end
-
---function hyperloop.placedir_to_rad(placedir)
---	-- my placedir (0..3) from N, W, S, E to radiant (0..2*PI)
---	return placedir / 2 * PI
---end
-
---function hyperloop.placedir_to_dir(placedir)
---	-- my placedir (0..3) from N, W, S to E to dir vector
---	local tbl = {
---		[0] = { x=0,  y=0, z=1},
---		[1] = { x=-1, y=0, z=0},
---		[2] = { x=0,  y=0, z=-1},
---		[3] = { x=1,  y=0, z=0},
---	}
---	return tbl[placedir % 4]
---end
-
----- switch from original facedir to radiant oriented placedir
---function hyperloop.facedir_to_placedir(facedir)
---	local tbl = {[0]=0, [1]=3, [2]=2, [3]=1}
---	return tbl[facedir]
---end
-
----- switch from radiant oriented placedir to original facedir
---function hyperloop.placedir_to_facedir(placedir)
---	local tbl = {[0]=0, [1]=3, [2]=2, [3]=1}
---	return tbl[placedir]
---end
-
 function hyperloop.get_facedir(placer)
 	local lookdir = placer:get_look_dir()
 	return core.dir_to_facedir(lookdir)
@@ -84,7 +51,7 @@ function hyperloop.facedir_to_rad(facedir)
 	return tbl[facedir] / 2 * PI
 end
 
--- calculate the new pos based on the given pos, the players facedir
+-- calculate the new pos based on the given pos, the players facedir, the y-offset
 -- and the given walk path like "3F2L" (F-orward, L-eft, R-ight, B-ack).
 function hyperloop.new_pos(pos, facedir, path, y_offs)
 	local _pos = table.copy(pos)
@@ -294,7 +261,6 @@ function hyperloop.is_blocked(key_str)
 		return false
 	else
 		local t = hyperloop.data.tAllStations[key_str].time_blocked or 0
-		print(t, minetest.get_gametime())
 		return t > minetest.get_gametime()
 	end
 end
@@ -316,7 +282,6 @@ local function convert_station_list(tAllStations)
 				item.station_name = key
 			end
 			key = hyperloop.get_key_str(pos)
-			print(key.." = "..dump(item))
 		end
 		if item.version == 2 then
 			item.version = 3
diff --git a/wifi.lua b/wifi.lua
index 496ad3a..4fbbb42 100644
--- a/wifi.lua
+++ b/wifi.lua
@@ -125,7 +125,7 @@ local function place_wifi_node(pos, head_node)
 	-- update peer
 	hyperloop.update_head_node(peer_pos, minetest.pos_to_string(pos))
 	-- degrade head tube to link tube
-	hyperloop.degrade_tupe_node(head_node)
+	hyperloop.degrade_tupe_node(head_node, pos)
 	if hyperloop.debugging then
 		print("wifi meta="..dump(minetest.get_meta(pos):to_table()))
 	end