diff --git a/camera.lua b/camera.lua
index 5eca200..19cd977 100644
--- a/camera.lua
+++ b/camera.lua
@@ -7,18 +7,6 @@ if utils.digilines_supported then
 
 
 
-local function is_drop (obj)
-	if obj then
-		local entity = obj.get_luaentity and obj:get_luaentity ()
-
-		return (entity and entity.name and entity.name == "__builtin:item")
-	end
-
-	return false
-end
-
-
-
 local function get_entity_dims (obj)
 	local dims = { -0.5, 0, -0.5, 0.5, 2, 0.5 }
 	local found = false
@@ -88,7 +76,7 @@ local function get_entity (pos)
 					end
 				end
 
-				if not is_drop (obj) then
+				if not utils.is_drop (obj) then
 					local epos =  vector.new (obj:get_pos ())
 					local dims = get_entity_dims (obj)
 
diff --git a/change.log b/change.log
index f4e9684..d2e384c 100644
--- a/change.log
+++ b/change.log
@@ -144,3 +144,12 @@ v0.1.24
 *	Fixed bug in utils.is_same_item ().
 *	Added force field generators.
 *	Removed immortal from cannon shells (shells test for same type of shell and ignore).
+
+
+v0.1.25
+*	Added hoppers.
+*	Added "inventory" message to conduits.
+*	Removed digilines or mesecons requirement for conduits.
+*	Improved unescaping item description.
+*	Fixed custom item output from storage.
+*	Added filtering to conduit forms.
diff --git a/conduit.lua b/conduit.lua
index a51f5f3..06cdf72 100644
--- a/conduit.lua
+++ b/conduit.lua
@@ -3,17 +3,13 @@ local S = utils.S
 
 
 
-if utils.digilines_supported or utils.mesecon_supported then
-
-
-
 local transfer_rate = 0.1
 local conduit_interval = 1.0
 local conduit_connections = utils.connections:new (mod_storage, "conduit_connections")
 
 
 -- forward declare
-local run_initialize_forward = nil
+local run_initialize = nil
 
 
 
@@ -55,6 +51,34 @@ end
 
 
 
+local function get_target_for_item (meta, inv, stack)
+	if meta then
+		if inv then
+			local slots = inv:get_size ("filter")
+
+			for slot = 1, slots, 1 do
+				local s = inv:get_stack ("filter", slot)
+
+				if s and not s:is_empty () and utils.is_same_item (s, stack) then
+					local target = meta:get_string ("target"..slot)
+
+					if target ~= "" then
+						return target
+					end
+				end
+			end
+		end
+
+		if meta:get_string ("target") ~= "" then
+			return meta:get_string ("target")
+		end
+	end
+
+	return nil
+end
+
+
+
 local function deliver_slot (pos, slot)
 	local meta = minetest.get_meta (pos)
 
@@ -222,7 +246,7 @@ local function add_to_send_list (pos, item, destpos, distance)
 
 			meta:set_string ("transfer_data", minetest.serialize (transfer_data))
 
-			run_initialize_forward (pos)
+			run_initialize (pos)
 		end
 	end
 end
@@ -235,9 +259,7 @@ local function send_to_target (pos, target, slot)
 	if meta then
 		local inv = meta:get_inventory ()
 
-		target = (target and tostring (target)) or meta:get_string ("target")
-
-		if inv and target:len () > 0 then
+		if inv then
 			if not slot then
 				local slots = inv:get_size ("main")
 
@@ -245,8 +267,10 @@ local function send_to_target (pos, target, slot)
 					local stack = inv:get_stack ("main", i)
 
 					if not stack:is_empty () and stack:get_count () > 0 then
-						slot = i
-						break
+						if target or get_target_for_item (meta, inv, stack) then
+							slot = i
+							break
+						end
 					end
 				end
 
@@ -275,11 +299,14 @@ local function send_to_target (pos, target, slot)
 			if slot then
 				local stack = inv:get_stack ("main", slot)
 
-				if not stack:is_empty () and stack:get_count () > 0 then
+				if stack and not stack:is_empty () then
 					local name = stack:get_name ()
 					local item = ItemStack (stack)
 
-					if item then
+					target = (target and tostring (target)) or
+								get_target_for_item (meta, inv, stack)
+
+					if item and target then
 						item:set_count (1)
 
 						local tpos, distance = conduit_connections:is_connected (pos, target)
@@ -311,32 +338,74 @@ end
 
 
 
+local function get_formspec (pos)
+	local meta = minetest.get_meta (pos)
+	local automatic = "false"
+	local filters = ""
+
+	if meta then
+		automatic = meta:get_string ("automatic")
+	end
+
+	for i = 1, 8, 1 do
+		filters = string.format ("%sfield[12.7,%0.2f;3.0,0.8;target%d;;${target%d}]"..
+										 "button[15.9,%0.2f;1.5,0.8;settarget%d;Set]",
+										 filters,
+										 (i * 1.25) + 0.35,
+										 i,
+										 i,
+										 (i * 1.25) + 0.35,
+										 i)
+	end
+
+	return
+		"formspec_version[3]"..
+		"size[18.4,12.25;true]"..
+		"field[1.0,1.5;3.0,0.8;channel;Channel;${channel}]"..
+		"button[4.2,1.5;1.5,0.8;setchannel;Set]"..
+		"field[1.0,3.0;3.0,0.8;target;Target;${target}]"..
+		"button[4.2,3.0;1.5,0.8;settarget;Set]"..
+		"checkbox[1.0,4.5;automatic;Automatic;"..automatic.."]"..
+		"list[context;main;6.0,1.0;4,4;]"..
+		"list[current_player;main;1.0,6.5;8,4;]"..
+		"listring[]"..
+		"label[11.5,1.25;Filter]"..
+		"list[context;filter;11.5,1.5;1,8;]"..
+		filters
+end
+
+
+
 local function run_conduit (pos, id)
 	local node = utils.get_far_node (pos)
 
-	if node and (node.name == "lwcomponents:conduit" or
-					 node.name == "lwcomponents:conduit_locked") then
-		local meta = minetest.get_meta (pos)
+	if node then
+		if node.name == "lwcomponents:conduit" or
+				node.name == "lwcomponents:conduit_locked" then
+			local meta = minetest.get_meta (pos)
 
-		if meta and id == meta:get_int ("conduit_id") then
-			local automatic = meta:get_string ("automatic") == "true"
+			if meta and id == meta:get_int ("conduit_id") then
+				local automatic = meta:get_string ("automatic") == "true"
 
-			if automatic then
-				send_to_target (pos)
-			end
-
-			if run_deliveries (pos) or automatic then
-				minetest.after (conduit_interval, run_conduit, pos, id)
-			else
-				meta:set_int ("run_active", 0)
+				if automatic then
+					send_to_target (pos)
+				end
+
+				if run_deliveries (pos) or automatic then
+					minetest.after (conduit_interval, run_conduit, pos, id)
+				else
+					meta:set_int ("run_active", 0)
+				end
 			end
+		else
+			conduit_connections:remove_node (pos)
 		end
 	end
 end
 
 
 
-local function run_initialize (pos)
+run_initialize = function (pos)
 	local meta = minetest.get_meta (pos)
 
 	if meta then
@@ -346,29 +415,96 @@ local function run_initialize (pos)
 		end
 	end
 end
-run_initialize_forward = run_initialize
 
 
 
-local function get_formspec (pos)
-	local meta = minetest.get_meta (pos)
-	local automatic = "false"
+local function count_table_keys (t)
+	local count = 0
 
-	if meta then
-		automatic = meta:get_string ("automatic")
+	for k, v in pairs (t) do
+		count = count + 1
+	end
+
+	return count
+end
+
+
+
+local function send_inventory_message (pos)
+	if utils.digilines_supported then
+		local meta = minetest.get_meta (pos)
+		local inv = (meta and meta:get_inventory ()) or nil
+
+		if meta and inv then
+			local channel = meta:get_string ("channel")
+
+			if channel:len () > 0 then
+				local inventory = { }
+				local slots = inv:get_size ("main")
+
+				for slot = 1, slots, 1 do
+					local stack = inv:get_stack ("main", slot)
+
+					if stack and not stack:is_empty () then
+						local name = stack:get_name ()
+						local description = nil
+						local custom = false
+						local pallet_index = nil
+						local tstack = stack:to_table ()
+
+						if tstack and tstack.meta and count_table_keys (tstack.meta) > 0 then
+							custom = true
+
+							pallet_index = tstack.meta.palette_index
+						end
+
+						if stack:get_short_description () ~= "" then
+							description = stack:get_short_description ()
+						elseif stack:get_description () ~= "" then
+							description = stack:get_description ()
+						else
+							description = name
+
+							local def = utils.find_item_def (name)
+
+							if def then
+								if def.short_description then
+									description = def.short_description
+								elseif def.description then
+									description = def.description
+								end
+							end
+						end
+
+						inventory[slot] =
+						{
+							name = stack:get_name (),
+							description = utils.unescape_description (description),
+							count = stack:get_count (),
+							custom = custom,
+							pallet_index = pallet_index,
+						}
+					else
+						inventory[slot] =
+						{
+							name = "",
+							description = "",
+							count = 0,
+							custom = false,
+							pallet_index = nil,
+						}
+					end
+				end
+
+				utils.digilines_receptor_send (pos,
+														 utils.digilines_default_rules,
+														 channel,
+														 { action = "inventory",
+															inventory = inventory })
+			end
+		end
 	end
 
-	return
-		"formspec_version[3]\n"..
-		"size[11.75,12.25;true]\n"..
-		"field[1.0,1.5;3.0,0.8;channel;Channel;${channel}]\n"..
-		"button[4.2,1.5;1.5,0.8;setchannel;Set]\n"..
-		"field[1.0,3.0;3.0,0.8;target;Target;${target}]\n"..
-		"button[4.2,3.0;1.5,0.8;settarget;Set]\n"..
-		"checkbox[1.0,4.5;automatic;Automatic;"..automatic.."]\n"..
-		"list[context;main;6.0,1.0;4,4;]\n"..
-		"list[current_player;main;1.0,6.5;8,4;]\n"..
-		"listring[]"
 end
 
 
@@ -394,7 +530,7 @@ local function after_place_base (pos, placer, itemstack, pointed_thing)
 	"field[0.5,1.0;6.0,0.8;channel;Channel;${channel}]"..
 	"button[2.0,2.3;3.0,0.8;setchannel;Set]"
 
-	meta:set_string ("inventory", "{ main = { }, transfer = { } }")
+	meta:set_string ("inventory", "{ main = { }, transfer = { }, filter = { } }")
 	meta:set_string ("formspec", spec)
 	meta:set_string ("transfer_data", minetest.serialize({ }))
 	meta:set_string ("automatic", "false")
@@ -407,6 +543,9 @@ local function after_place_base (pos, placer, itemstack, pointed_thing)
 
 	inv:set_size ("transfer", 32)
 	inv:set_width ("transfer", 8)
+
+	inv:set_size ("filter", 8)
+	inv:set_width ("filter", 1)
 end
 
 
@@ -526,9 +665,25 @@ local function on_receive_fields (pos, formname, fields, sender)
 			meta:set_string ("automatic", fields.automatic)
 			meta:set_string ("formspec", get_formspec (pos))
 
+			if fields.automatic == "true" then
+				meta:set_int ("run_active", 0)
+			end
+
 			run_initialize (pos)
 		end
 	end
+
+	for i = 1, 8, 1 do
+		if fields[string.format ("settarget%d", i)] then
+			local meta = minetest.get_meta (pos)
+
+			if meta then
+				local name = string.format ("target%d", i)
+
+				meta:set_string (name, fields[name])
+			end
+		end
+	end
 end
 
 
@@ -622,6 +777,87 @@ end
 
 
 
+local function allow_metadata_inventory_put (pos, listname, index, stack, player)
+	if listname == "filter" then
+		local meta = minetest.get_meta (pos)
+
+		if meta then
+			local inv = meta:get_inventory ()
+
+			if inv then
+				inv:set_stack ("filter", index, ItemStack (stack:get_name ()))
+			end
+		end
+
+		return 0
+	end
+
+	return stack:get_stack_max ()
+end
+
+
+
+local function allow_metadata_inventory_take (pos, listname, index, stack, player)
+	if listname == "filter" then
+		local meta = minetest.get_meta (pos)
+
+		if meta then
+			local inv = meta:get_inventory ()
+
+			if inv then
+				inv:set_stack ("filter", index, nil)
+			end
+		end
+
+		return 0
+	end
+
+	return stack:get_stack_max ()
+end
+
+
+
+local function allow_metadata_inventory_move (pos, from_list, from_index,
+															 to_list, to_index, count, player)
+	local meta = minetest.get_meta (pos)
+
+	if meta then
+		local inv = meta:get_inventory ()
+
+		if inv then
+			if from_list == "filter" then
+				if to_list == "filter" then
+					return 1
+				end
+
+				inv:set_stack ("filter", from_index, nil)
+
+				return 0
+
+			elseif to_list == "filter" then
+				local stack = inv:get_stack (from_list, from_index)
+
+				if stack and not stack:is_empty () then
+					inv:set_stack ("filter", to_index, ItemStack (stack:get_name ()))
+				end
+
+				return 0
+
+			else
+				local stack = inv:get_stack (from_list, from_index)
+
+				if stack and not stack:is_empty () then
+					return stack:get_stack_max ()
+				end
+			end
+		end
+	end
+
+	return utils.settings.default_stack_max
+end
+
+
+
 local function digilines_support ()
 	if utils.digilines_supported then
 		return
@@ -655,6 +891,9 @@ local function digilines_support ()
 								elseif m[1] == "transfer" then
 									send_to_target (pos)
 
+								elseif m[1] == "inventory" then
+									send_inventory_message (pos)
+
 								end
 
 							elseif type (msg) == "table" then
@@ -797,12 +1036,48 @@ end
 
 minetest.register_node("lwcomponents:conduit", {
 	description = S("Conduit"),
-	drawtype = "glasslike_framed",
-	tiles = { "lwconduit_edge.png", "lwconduit.png" },
+	tiles = { "lwconduit.png" },
+	drawtype = "nodebox",
+	node_box = {
+		type = "connected",
+		fixed = 				{ -0.375, -0.375, -0.375, 0.375, 0.375, 0.375 }, -- body
+		connect_top = 		{ -0.3125, 0.3125, -0.3125, 0.3125, 0.5, 0.3125 }, -- top
+		connect_bottom =	{-0.3125, -0.5, -0.3125, 0.3125, -0.3125, 0.3125}, -- down
+		connect_front = 	{ -0.3125, -0.3125, -0.5, 0.3125, 0.3125, -0.3125 }, -- front
+		connect_back =  	{ -0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125 }, -- back
+		connect_left =  	{ -0.5, -0.3125, -0.3125, -0.3125, 0.3125, 0.3125 }, -- left
+		connect_right = 	{ 0.3125, -0.3125, -0.3125, 0.5, 0.3125, 0.3125 }, -- right
+	},
+	connect_sides = { "top", "bottom", "front", "back", "left", "right" },
+	connects_to = { "lwcomponents:conduit", "lwcomponents:conduit_locked",
+						 "lwcomponents:hopper", "lwcomponents:hopper_horz",
+						 "hopper:hopper", "hopper:hopper_side",
+						 "group:tube", "pipeworks:filter", "pipeworks:mese_filter",
+						 "pipeworks:digiline_filter" },
+	selection_box = {
+		type = "connected",
+		fixed = 				{ -0.375, -0.375, -0.375, 0.375, 0.375, 0.375 }, -- body
+		connect_top = 		{ -0.3125, 0.3125, -0.3125, 0.3125, 0.5, 0.3125 }, -- top
+		connect_bottom =	{-0.3125, -0.5, -0.3125, 0.3125, -0.3125, 0.3125}, -- down
+		connect_front = 	{ -0.3125, -0.3125, -0.5, 0.3125, 0.3125, -0.3125 }, -- front
+		connect_back =  	{ -0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125 }, -- back
+		connect_left =  	{ -0.5, -0.3125, -0.3125, -0.3125, 0.3125, 0.3125 }, -- left
+		connect_right = 	{ 0.3125, -0.3125, -0.3125, 0.5, 0.3125, 0.3125 }, -- right
+	},
+	collision_box = {
+		type = "connected",
+		fixed = 				{ -0.375, -0.375, -0.375, 0.375, 0.375, 0.375 }, -- body
+		connect_top = 		{ -0.3125, 0.3125, -0.3125, 0.3125, 0.5, 0.3125 }, -- top
+		connect_bottom =	{-0.3125, -0.5, -0.3125, 0.3125, -0.3125, 0.3125}, -- down
+		connect_front = 	{ -0.3125, -0.3125, -0.5, 0.3125, 0.3125, -0.3125 }, -- front
+		connect_back =  	{ -0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125 }, -- back
+		connect_left =  	{ -0.5, -0.3125, -0.3125, -0.3125, 0.3125, 0.3125 }, -- left
+		connect_right = 	{ 0.3125, -0.3125, -0.3125, 0.5, 0.3125, 0.3125 }, -- right
+	},
 	is_ground_content = false,
 	groups = table.copy (conduit_groups),
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "none",
+	paramtype = "light",
 	param1 = 0,
 	paramtype2 = "none",
 	param2 = 0,
@@ -820,19 +1095,59 @@ minetest.register_node("lwcomponents:conduit", {
 	can_dig = can_dig,
 	after_dig_node = utils.pipeworks_after_dig,
 	on_blast = on_blast,
-	on_rightclick = on_rightclick
+	on_rightclick = on_rightclick,
+	allow_metadata_inventory_put = allow_metadata_inventory_put,
+	allow_metadata_inventory_take = allow_metadata_inventory_take,
+	allow_metadata_inventory_move = allow_metadata_inventory_move
+
 })
 
 
 
 minetest.register_node("lwcomponents:conduit_locked", {
 	description = S("Conduit (locked)"),
-	drawtype = "glasslike_framed",
-	tiles = { "lwconduit_edge.png", "lwconduit.png" },
+	tiles = { "lwconduit.png" },
+	drawtype = "nodebox",
+	node_box = {
+		type = "connected",
+		fixed = 				{ -0.375, -0.375, -0.375, 0.375, 0.375, 0.375 }, -- body
+		connect_top = 		{ -0.3125, 0.3125, -0.3125, 0.3125, 0.5, 0.3125 }, -- top
+		connect_bottom =	{-0.3125, -0.5, -0.3125, 0.3125, -0.3125, 0.3125}, -- down
+		connect_front = 	{ -0.3125, -0.3125, -0.5, 0.3125, 0.3125, -0.3125 }, -- front
+		connect_back =  	{ -0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125 }, -- back
+		connect_left =  	{ -0.5, -0.3125, -0.3125, -0.3125, 0.3125, 0.3125 }, -- left
+		connect_right = 	{ 0.3125, -0.3125, -0.3125, 0.5, 0.3125, 0.3125 }, -- right
+	},
+	connect_sides = { "top", "bottom", "front", "back", "left", "right" },
+	connects_to = { "lwcomponents:conduit", "lwcomponents:conduit_locked",
+						 "lwcomponents:hopper", "lwcomponents:hopper_horz",
+						 "hopper:hopper", "hopper:hopper_side",
+						 "group:tube", "pipeworks:filter", "pipeworks:mese_filter",
+						 "pipeworks:digiline_filter" },
+	selection_box = {
+		type = "connected",
+		fixed = 				{ -0.375, -0.375, -0.375, 0.375, 0.375, 0.375 }, -- body
+		connect_top = 		{ -0.3125, 0.3125, -0.3125, 0.3125, 0.5, 0.3125 }, -- top
+		connect_bottom =	{-0.3125, -0.5, -0.3125, 0.3125, -0.3125, 0.3125}, -- down
+		connect_front = 	{ -0.3125, -0.3125, -0.5, 0.3125, 0.3125, -0.3125 }, -- front
+		connect_back =  	{ -0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125 }, -- back
+		connect_left =  	{ -0.5, -0.3125, -0.3125, -0.3125, 0.3125, 0.3125 }, -- left
+		connect_right = 	{ 0.3125, -0.3125, -0.3125, 0.5, 0.3125, 0.3125 }, -- right
+	},
+	collision_box = {
+		type = "connected",
+		fixed = 				{ -0.375, -0.375, -0.375, 0.375, 0.375, 0.375 }, -- body
+		connect_top = 		{ -0.3125, 0.3125, -0.3125, 0.3125, 0.5, 0.3125 }, -- top
+		connect_bottom =	{-0.3125, -0.5, -0.3125, 0.3125, -0.3125, 0.3125}, -- down
+		connect_front = 	{ -0.3125, -0.3125, -0.5, 0.3125, 0.3125, -0.3125 }, -- front
+		connect_back =  	{ -0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125 }, -- back
+		connect_left =  	{ -0.5, -0.3125, -0.3125, -0.3125, 0.3125, 0.3125 }, -- left
+		connect_right = 	{ 0.3125, -0.3125, -0.3125, 0.5, 0.3125, 0.3125 }, -- right
+	},
 	is_ground_content = false,
 	groups = table.copy (conduit_groups),
 	sounds = default.node_sound_stone_defaults (),
-	paramtype = "none",
+	paramtype = "light",
 	param1 = 0,
 	paramtype2 = "none",
 	param2 = 0,
@@ -850,7 +1165,10 @@ minetest.register_node("lwcomponents:conduit_locked", {
 	can_dig = can_dig,
 	after_dig_node = utils.pipeworks_after_dig,
 	on_blast = on_blast,
-	on_rightclick = on_rightclick
+	on_rightclick = on_rightclick,
+	allow_metadata_inventory_put = allow_metadata_inventory_put,
+	allow_metadata_inventory_take = allow_metadata_inventory_take,
+	allow_metadata_inventory_move = allow_metadata_inventory_move
 })
 
 
@@ -896,6 +1214,25 @@ local function convert_conduits ()
 						end
 					end
 				end
+
+				-- added v0.1.25 (2-3-22)
+				local tmeta = meta:to_table ()
+
+				if tmeta and tmeta.inventory then
+					if not tmeta.inventory.filter then
+						tmeta.inventory.filter =
+						{
+							[1] = "", [2] = "", [3] = "", [4] = "",
+							[5] = "", [6] = "", [7] = "", [8] = ""
+						}
+
+						meta:from_table (tmeta)
+
+						if meta:get_string ("channel") ~= "" then
+							meta:set_string ("formspec", get_formspec (data.pos))
+						end
+					end
+				end
 			end
 		end
 	end
@@ -912,7 +1249,7 @@ local function restart_conduits ()
 		local meta = minetest.get_meta (data.pos)
 
 		if meta and meta:get_int ("run_active") ~= 0 then
-			minetest.after (conduit_interval + (math.random (9) / 10),
+			minetest.after (conduit_interval + (math.random (10) / 10),
 								 run_conduit, data.pos, meta:get_int ("conduit_id"))
 		end
 	end
@@ -927,4 +1264,4 @@ end)
 
 
 
-end -- utils.digilines_supported or utils.mesecon_supported
+--
diff --git a/crafting.lua b/crafting.lua
index 7feaaa0..c09cffb 100644
--- a/crafting.lua
+++ b/crafting.lua
@@ -81,6 +81,26 @@ minetest.register_craft( {
 })
 
 
+minetest.register_craft( {
+	output = "lwcomponents:conduit 5",
+	recipe = {
+		{ "default:stone", "", "default:stone" },
+		{ "", "default:chest", "" },
+		{ "default:stone", "default:steel_ingot", "default:stone" },
+	},
+})
+
+
+minetest.register_craft( {
+	output = "lwcomponents:conduit_locked 5",
+	recipe = {
+		{ "default:stone", "", "default:stone" },
+		{ "", "default:chest_locked", "" },
+		{ "default:stone", "default:steel_ingot", "default:stone" },
+	},
+})
+
+
 minetest.register_craft( {
 	output = "lwcomponents:cannon_shell 10",
 	recipe = {
@@ -100,6 +120,7 @@ minetest.register_craft( {
 
 
 if minetest.global_exists ("fire") then
+
 minetest.register_craft( {
 	output = "lwcomponents:cannon_fire_shell 10",
 	recipe = {
@@ -107,6 +128,7 @@ minetest.register_craft( {
 		{ "default:iron_lump", "default:coalblock" },
 	},
 })
+
 end -- minetest.global_exists ("fire")
 
 
@@ -124,6 +146,18 @@ minetest.register_craft( {
 end -- utils.mesecon_supported
 
 
+if utils.hopper_supported then
+
+minetest.register_craft( {
+	output = "lwcomponents:hopper",
+	recipe = {
+		{ "default:stone", "default:steel_ingot", "default:stone" },
+		{ "", "default:stone", "" },
+	},
+})
+
+end
+
 
 if utils.digilines_supported or utils.mesecon_supported then
 
@@ -271,26 +305,6 @@ minetest.register_craft( {
 })
 
 
-minetest.register_craft( {
-	output = "lwcomponents:conduit 5",
-	recipe = {
-		{ "default:stone", "", "default:stone" },
-		{ "", "default:chest", "" },
-		{ "default:stone", "default:steel_ingot", "default:stone" },
-	},
-})
-
-
-minetest.register_craft( {
-	output = "lwcomponents:conduit_locked 5",
-	recipe = {
-		{ "default:stone", "", "default:stone" },
-		{ "", "default:chest_locked", "" },
-		{ "default:stone", "default:steel_ingot", "default:stone" },
-	},
-})
-
-
 minetest.register_craft({
 	output = "lwcomponents:piston 2",
 	recipe = {
diff --git a/dummy_player.lua b/dummy_player.lua
new file mode 100644
index 0000000..2a30631
--- /dev/null
+++ b/dummy_player.lua
@@ -0,0 +1,438 @@
+
+
+local function get_dummy_player (as_player, name, pos, look_dir, controls, velocity,
+											hp, armor_groups, properties, nametag, breath)
+	local obj_as_player = as_player ~= false
+	local obj_name = name or ""
+	local obj_pos = vector.new (pos or { x = 0, y = 0, z = 0 })
+	local obj_look_dir = vector.new (look_dir or { x = 0, y = 0, z = 0 })
+	local obj_controls = table.copy (controls or { })
+	local obj_velocity = vector.new (velocity or { x = 0, y = 0, z = 0 })
+	local obj_hp = hp or 20
+	local obj_armor_groups = table.copy (armor_groups or { })
+	local obj_properties = table.copy (properties or { })
+	local obj_nametag = table.copy (nametag or { })
+	local obj_breath = breath or 20
+
+	local object = { }
+
+	-- common
+	object.get_pos = function (self)
+		return vector.new (obj_pos)
+	end
+
+
+	object.set_pos = function (self, pos)
+		obj_pos = vector.new (pos)
+	end
+
+
+	object.get_velocity = function (self)
+		return vector.new (obj_velocity)
+	end
+
+
+	object.add_velocity = function (self, vel)
+		obj_velocity = vector.add (obj_velocity, vel)
+	end
+
+
+	object.move_to = function (self, pos, continuous)
+		obj_pos = vector.new (pos)
+	end
+
+
+	object.punch = function (self, puncher, time_from_last_punch, tool_capabilities, direction)
+	end
+
+
+	object.right_click = function (self, clicker)
+	end
+
+
+	object.get_hp = function (self)
+		return obj_hp
+	end
+
+
+	object.set_hp = function (self, hp, reason)
+		obj_hp = hp
+	end
+
+
+	object.get_inventory = function (self)
+		return nil
+	end
+
+
+	object.get_wield_list = function (self)
+		return nil
+	end
+
+
+	object.get_wield_index = function (self)
+		return nil
+	end
+
+
+	object.get_wielded_item = function (self)
+		return nil
+	end
+
+
+	object.set_wielded_item = function (self, item)
+	end
+
+
+	object.set_armor_groups = function (self, groups)
+		obj_armor_groups = groups
+	end
+
+
+	object.get_armor_groups = function (self)
+		return table.copy (obj_armor_groups)
+	end
+
+
+	object.set_animation = function (self, frame_range, frame_speed, frame_blend, frame_loop)
+	end
+
+
+	object.get_animation = function (self)
+		return { x = 1, y = 1 }, 15.0, 0.0, true
+	end
+
+
+	object.set_animation_frame_speed = function (self, frame_speed)
+	end
+
+
+	object.set_attach = function (self, parent, bone, position, rotation, forced_visible)
+	end
+
+
+	object.get_attach = function (self)
+		return nil
+	end
+
+
+	object.get_children = function (self)
+		return { }
+	end
+
+
+	object.set_detach = function (self)
+	end
+
+
+	object.set_bone_position = function (self, bone, position, rotation)
+	end
+
+
+	object.get_bone_position = function (self)
+		return nil
+	end
+
+
+	object.set_properties = function (self, properties)
+		obj_properties = table.copy (properties or { })
+	end
+
+
+	object.get_properties = function (self)
+		return table.copy (obj_properties)
+	end
+
+
+	object.is_player = function (self)
+		return obj_as_player
+	end
+
+
+	object.get_nametag_attributes = function (self)
+		return obj_nametag
+	end
+
+
+	object.set_nametag_attributes = function (self, attributes)
+		obj_nametag = table.copy (attributes)
+	end
+
+
+
+	-- player
+	object.get_player_name = function (self)
+		return obj_name
+	end
+
+
+	object.get_player_velocity = function (self)
+		return table.copy (obj_velocity)
+	end
+
+
+	object.add_player_velocity = function (self, vel)
+		obj_velocity =  vector.add (obj_velocity, vel)
+	end
+
+
+	object.get_look_dir = function (self)
+		return table.copy (obj_look_dir)
+	end
+
+
+	object.get_look_vertical = function (self)
+		return vector.dir_to_rotation (obj_look_dir, { x = 0, y = 1, z = 0 }).x
+	end
+
+
+	object.get_look_horizontal = function (self)
+		return vector.dir_to_rotation (obj_look_dir, { x = 0, y = 1, z = 0 }).y
+	end
+
+
+	object.set_look_vertical = function (self, radians)
+		obj_look_dir = vector.new ({ x = radians, y = obj_look_dir.y, z = obj_look_dir.z })
+	end
+
+
+	object.set_look_horizontal = function (self, radians)
+		obj_look_dir = vector.new ({ x = obj_look_dir.x, y = radians, z = obj_look_dir.z })
+	end
+
+
+	object.get_look_pitch = function (self)
+		return vector.dir_to_rotation (obj_look_dir, { x = 0, y = 1, z = 0 }).x
+	end
+
+
+	object.get_look_yaw = function (self)
+		return vector.dir_to_rotation (obj_look_dir, { x = 0, y = 1, z = 0 }).y
+	end
+
+
+	object.set_look_pitch = function (self, radians)
+		obj_look_dir = vector.new ({ x = radians, y = obj_look_dir.y, z = obj_look_dir.z })
+	end
+
+
+	object.set_look_yaw = function (self, radians)
+		obj_look_dir = vector.new ({ x = obj_look_dir.x, y = radians, z = obj_look_dir.z })
+	end
+
+
+	object.get_breath = function (self)
+		return obj_breath
+	end
+
+
+	object.set_breath = function (self, value)
+		obj_breath = value
+	end
+
+
+	object.get_fov = function (self)
+		return 0, false, 0
+	end
+
+
+	object.set_fov = function (self, fov, is_multiplier, transition_time)
+		obj_breath = value
+	end
+
+
+	object.get_attribute = function (self, attribute)
+		return nil
+	end
+
+
+	object.set_attribute = function (self, attribute, value)
+	end
+
+
+	object.get_meta = function (self)
+		return nil
+	end
+
+
+	object.set_inventory_formspec = function (self, formspec)
+	end
+
+
+	object.get_inventory_formspec = function (self)
+		return ""
+	end
+
+
+	object.set_formspec_prepend = function (self, formspec)
+	end
+
+
+	object.get_formspec_prepend = function (self)
+		return ""
+	end
+
+
+	object.get_player_control = function (self)
+		return table.copy (obj_controls)
+	end
+
+
+	object.set_physics_override = function (self, override_table)
+	end
+
+
+	object.get_physics_override = function (self)
+		return { }
+	end
+
+
+	object.hud_add = function (self, definition)
+		return nil
+	end
+
+
+	object.hud_remove = function (self, id)
+	end
+
+
+	object.hud_change = function (self, id, stat, value)
+	end
+
+
+	object.hud_get = function (self, id)
+		return nil
+	end
+
+
+	object.hud_set_flags = function (self, flags)
+	end
+
+
+	object.hud_get_flags = function (self)
+		return { }
+	end
+
+
+	object.hud_set_hotbar_itemcount = function (self, count)
+	end
+
+
+	object.hud_get_hotbar_itemcount = function (self)
+		return 0
+	end
+
+
+	object.hud_set_hotbar_image = function (self, texturename)
+	end
+
+
+	object.hud_get_hotbar_image = function (self)
+		return ""
+	end
+
+
+	object.hud_set_hotbar_selected_image = function (self, texturename)
+	end
+
+
+	object.hud_get_hotbar_selected_image = function (self)
+		return ""
+	end
+
+
+	object.set_minimap_modes = function (self, modes, selected_mode)
+	end
+
+
+	object.set_sky = function (self, sky_parameters)
+	end
+
+
+	object.get_sky = function (self)
+		return nil
+	end
+
+
+	object.get_sky_color = function (self)
+		return nil
+	end
+
+
+	object.set_sun = function (self, sun_parameters)
+	end
+
+
+	object.get_sun = function (self)
+		return { }
+	end
+
+
+	object.set_moon = function (self, moon_parameters)
+	end
+
+
+	object.get_moon = function (self)
+		return { }
+	end
+
+
+	object.set_stars = function (self, star_parameters)
+	end
+
+
+	object.get_stars = function (self)
+		return { }
+	end
+
+
+	object.set_clouds = function (self, cloud_parameters)
+	end
+
+
+	object.get_clouds = function (self)
+		return { }
+	end
+
+
+	object.override_day_night_ratio = function (self, ratio)
+	end
+
+
+	object.get_day_night_ratio = function (self)
+		return nil
+	end
+
+
+	object.set_local_animation = function (self, idle, walk, dig, walk_while_dig, frame_speed)
+	end
+
+
+	object.get_local_animation = function (self)
+		return { x = 0, y = 0 }, { x = 0, y = 0 }, { x = 0, y = 0 }, { x = 0, y = 0 }, 30
+	end
+
+
+	object.set_eye_offset = function (self, firstperson, thirdperson)
+	end
+
+
+	object.get_eye_offset = function (self)
+		return { x = 0, y = 0, z = 0 }, { x = 0, y = 0, z = 0 }
+	end
+
+
+	object.send_mapblock = function (self, blockpos)
+		return false
+	end
+
+
+	return object
+end
+
+
+
+return get_dummy_player
+
+
+--
diff --git a/force_field.lua b/force_field.lua
index c725dfe..c2e32c6 100644
--- a/force_field.lua
+++ b/force_field.lua
@@ -232,18 +232,6 @@ end
 
 
 
-local function is_drop (obj)
-	if obj then
-		local entity = obj.get_luaentity and obj:get_luaentity ()
-
-		return (entity and entity.name and entity.name == "__builtin:item")
-	end
-
-	return false
-end
-
-
-
 local function run_zap (pos)
 	minetest.sound_play ("lwforce_field_zap", { pos = pos, max_hear_distance = 10, gain = 1.0 })
 
@@ -290,7 +278,7 @@ local function run_field (pos, elapsed)
 			local obj_pos = (obj.get_pos and obj:get_pos ()) or nil
 
 			if obj_pos and not obj:get_armor_groups ().immortal then
-				if not is_drop (obj) and not minetest.is_protected (obj_pos, owner) then
+				if not utils.is_drop (obj) and not minetest.is_protected (obj_pos, owner) then
 
 					if obj:is_player () then
 						if not exclude[obj:get_player_name ()] then
diff --git a/hopper.lua b/hopper.lua
new file mode 100644
index 0000000..89543a9
--- /dev/null
+++ b/hopper.lua
@@ -0,0 +1,425 @@
+local utils, mod_storage = ...
+local S = utils.S
+
+
+
+if utils.hopper_supported then
+
+
+
+local hopper_interval = 1.0
+
+
+
+local hopper_list = minetest.deserialize (mod_storage:get_string ("hopper_list"))
+if type (hopper_list) ~= "table" then
+	hopper_list = {}
+end
+
+
+
+local function add_hopper_to_list (pos)
+	hopper_list[minetest.pos_to_string (pos, 0)] = true
+
+	mod_storage:set_string ("hopper_list", minetest.serialize (hopper_list))
+end
+
+
+
+local function remove_hopper_from_list (pos)
+	hopper_list[minetest.pos_to_string (pos, 0)] = nil
+
+	mod_storage:set_string ("hopper_list", minetest.serialize (hopper_list))
+end
+
+
+
+local input_dir =
+{
+	[0] = { x = 0, y = 1, z = 0 },
+	{ x = 0, y = 0, z = 1 },
+	{ x = 0, y = 0, z = -1 },
+	{ x = 1, y = 0, z = 0 },
+	{ x = -1, y = 0, z = 0 },
+	{ x = 0, y = -1, z = 0 }
+}
+
+local function get_input_dir (node)
+	return input_dir[math.floor (node.param2 / 4)]
+end
+
+
+
+local function get_output_dir (node)
+	if node then
+		if node.name == "lwcomponents:hopper" then
+			return vector.multiply (get_input_dir (node), -1)
+		elseif node.name == "lwcomponents:hopper_horz" then
+			return minetest.facedir_to_dir (node.param2)
+		end
+	end
+
+	return nil
+end
+
+
+
+local function get_drop (pos)
+	local objs = minetest.get_objects_inside_radius (pos, 1)
+
+	for _, obj in pairs (objs) do
+		local obj_pos = (obj.get_pos and obj:get_pos ())
+
+		if obj_pos and utils.is_drop (obj) then
+			obj_pos = vector.round (obj_pos)
+
+			if vector.equals (pos, obj_pos) then
+				local stack = ItemStack (obj:get_luaentity ().itemstring)
+
+				if stack and not stack:is_empty () then
+					stack:set_count (1)
+
+					return stack, obj
+				end
+			end
+		end
+	end
+end
+
+
+
+local function take_drop (obj)
+	if utils.is_drop (obj) then
+		local stack = ItemStack (obj:get_luaentity ().itemstring)
+
+		if stack and not stack:is_empty () then
+			stack:set_count (stack:get_count () - 1)
+
+			if stack:is_empty () then
+				obj:get_luaentity().itemstring = ""
+				obj:remove()
+			else
+				obj:get_luaentity().itemstring = stack:to_string ()
+			end
+		end
+	end
+end
+
+
+
+local function next_item_to_take (src_pos, src_node, src_inv_name)
+	if not src_inv_name or not minetest.registered_nodes[src_node.name] then
+		return
+	end
+
+	local src_meta = minetest.get_meta (src_pos)
+	local src_inv = (src_meta and src_meta:get_inventory ()) or nil
+
+	if src_inv then
+		local slots = src_inv:get_size (src_inv_name)
+
+		for slot = 1, slots, 1 do
+			local stack = src_inv:get_stack (src_inv_name, slot)
+
+			if stack and not stack:is_empty () then
+				stack:set_count (1)
+
+				return stack, slot
+			end
+		end
+	end
+end
+
+
+
+local function take_item (src_pos, src_inv_name, slot)
+	local src_meta = minetest.get_meta (src_pos)
+	local src_inv = (src_meta and src_meta:get_inventory ()) or nil
+
+	if src_inv then
+		local stack = src_inv:get_stack (src_inv_name, slot)
+
+		if stack and not stack:is_empty () then
+			stack:set_count (stack:get_count () - 1)
+
+			src_inv:set_stack (src_inv_name, slot, stack)
+		end
+	end
+end
+
+
+
+local function place_item (dest_pos, dest_node, dest_inv_name, stack, placer)
+	local dest_def = minetest.registered_nodes[dest_node.name]
+
+	if not dest_inv_name or not dest_def then
+		return
+	end
+
+	local dest_meta = minetest.get_meta (dest_pos)
+	local dest_inv = (dest_meta and dest_meta:get_inventory ()) or nil
+
+	if dest_inv then
+		local slots = dest_inv:get_size (dest_inv_name)
+
+		-- find existing stack
+		for slot = 1, slots, 1 do
+			local inv_stack = dest_inv:get_stack (dest_inv_name, slot)
+
+			if inv_stack and not inv_stack:is_empty () and
+				utils.is_same_item (inv_stack, stack) and
+				inv_stack:get_count () < inv_stack:get_stack_max () and
+				(dest_def.allow_metadata_inventory_put == nil or
+				 placer == nil or
+				 dest_def.allow_metadata_inventory_put(dest_pos, dest_inv_name, slot, stack, placer) > 0) then
+
+				inv_stack:set_count (inv_stack:get_count () + 1)
+				dest_inv:set_stack (dest_inv_name, slot, inv_stack)
+
+				if dest_def.on_metadata_inventory_put and placer then
+					dest_def.on_metadata_inventory_put (dest_pos, dest_inv_name, slot, stack, placer)
+				end
+
+				return true
+			end
+		end
+
+		-- find empty slot
+		for slot = 1, slots, 1 do
+			local inv_stack = dest_inv:get_stack (dest_inv_name, slot)
+
+			if not inv_stack or inv_stack:is_empty () and
+				(dest_def.allow_metadata_inventory_put == nil or
+				 placer == nil or
+				 dest_def.allow_metadata_inventory_put(dest_pos, dest_inv_name, slot, stack, placer) > 0) then
+
+				dest_inv:set_stack (dest_inv_name, slot, stack)
+
+				if dest_def.on_metadata_inventory_put and placer then
+					dest_def.on_metadata_inventory_put (dest_pos, dest_inv_name, slot, stack, placer)
+				end
+
+				return true
+			end
+		end
+	end
+
+	return false
+end
+
+
+
+local function run_hopper_action (pos)
+	local node = utils.get_far_node (pos)
+	local dest_dir = get_output_dir (node)
+
+	if dest_dir then
+		local dest_pos = vector.add (pos, dest_dir)
+		local dest_node = utils.get_far_node (dest_pos)
+
+		if dest_node then
+			local registered_dest_invs = hopper.get_registered_inventories_for (dest_node.name)
+
+			if registered_dest_invs then
+				local meta = minetest.get_meta (pos)
+				local placer_name = (meta and meta:get_string ("placer_name")) or nil
+				local placer = (placer_name and minetest.get_player_by_name (placer_name)) or
+									utils.get_dummy_player (true, placer_name or "<unknown>")
+				local src_pos = vector.add (pos, get_input_dir (node))
+				local drop = nil
+				local stack = nil
+				local slot = nil
+				local src_inv_name = nil
+
+				stack, drop = get_drop (src_pos)
+
+				if not stack then
+					local src_node = utils.get_far_node (src_pos)
+
+					if src_node then
+						local registered_src_invs = hopper.get_registered_inventories_for (src_node.name)
+
+						if registered_src_invs then
+							src_inv_name = registered_src_invs["top"]
+							stack, slot = next_item_to_take (src_pos, src_node, src_inv_name)
+						end
+					end
+				end
+
+				if stack then
+					local dest_side = (node.name == "lwcomponents:hopper" and "bottom") or "side"
+					local dest_inv_name = registered_dest_invs[dest_side]
+
+					if place_item (dest_pos, dest_node, dest_inv_name, stack, placer) then
+						if drop then
+							take_drop (drop)
+						else
+							take_item (src_pos, src_inv_name, slot)
+						end
+					end
+				end
+			end
+		end
+	end
+end
+
+
+
+local function on_construct (pos)
+	add_hopper_to_list (pos)
+end
+
+
+
+local function on_destruct (pos)
+	remove_hopper_from_list (pos)
+end
+
+
+
+local function after_place_node (pos, placer, itemstack, pointed_thing)
+	local meta = minetest.get_meta (pos)
+
+	meta:set_string ("placer_name", (placer and placer:get_player_name ()) or "")
+
+	-- If return true no item is taken from itemstack
+	return false
+end
+
+
+
+local function on_place (itemstack, placer, pointed_thing)
+	if pointed_thing and pointed_thing.type == "node" then
+		local stack = ItemStack (itemstack)
+		local dir = vector.direction (pointed_thing.above, pointed_thing.under)
+
+		if dir.y == 0 then
+			minetest.item_place (ItemStack ("lwcomponents:hopper_horz"), placer, pointed_thing)
+
+			if not utils.is_creative (placer) then
+				stack:set_count (stack:get_count () - 1)
+			end
+
+			return stack
+		end
+	end
+
+	return minetest.item_place (itemstack, placer, pointed_thing)
+end
+
+
+
+minetest.register_node ("lwcomponents:hopper", {
+   description = S("Hopper"),
+   tiles = { "lwcomponents_hopper_top.png", "lwcomponents_hopper_vert_spout.png",
+				 "lwcomponents_hopper_side.png", "lwcomponents_hopper_side.png",
+				 "lwcomponents_hopper_side.png", "lwcomponents_hopper_side.png" },
+   drawtype = "nodebox",
+   node_box = {
+      type = "fixed",
+		fixed = {
+			{-0.3125, -0.5, -0.3125, 0.3125, -0.25, 0.3125}, -- spout_vert
+			{-0.375, -0.375, -0.375, 0.375, 0.3125, 0.375}, -- body
+			{-0.5, 0, -0.5, -0.3125, 0.5, 0.5}, -- funnel_1
+			{-0.5, 0, 0.3125, 0.5, 0.5, 0.5}, -- funnel_2
+			{-0.5, 0, -0.5, 0.5, 0.5, -0.3125}, -- funnel_3
+			{0.3125, 0, -0.5, 0.5, 0.5, 0.5}, -- funnel_4
+		}
+   },
+   selection_box = {
+      type = "fixed",
+		fixed = {
+			{-0.3125, -0.5, -0.3125, 0.3125, -0.25, 0.3125}, -- spout_vert
+			{-0.375, -0.375, -0.375, 0.375, 0.3125, 0.375}, -- body
+			{-0.5, 0, -0.5, 0.5, 0.5, 0.5}, -- funnel
+		}
+   },
+   collision_box = {
+      type = "fixed",
+		fixed = {
+			{-0.375, -0.375, -0.375, 0.375, 0.3125, 0.375}, -- body
+			{-0.5, 0, -0.5, 0.5, 0.5, 0.5}, -- funnel
+			{-0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125}, -- spout_side
+		}
+   },
+	paramtype = "light",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 0,
+	drop = "lwcomponents:hopper",
+	groups = { cracky = 3 },
+	sounds = default.node_sound_stone_defaults (),
+
+   on_construct = on_construct,
+   on_destruct = on_destruct,
+	after_place_node = after_place_node,
+	on_place = on_place,
+})
+
+
+
+minetest.register_node ("lwcomponents:hopper_horz", {
+   description = S("Hopper"),
+   tiles = { "lwcomponents_hopper_top.png", "lwcomponents_hopper_bottom.png",
+				 "lwcomponents_hopper_side.png", "lwcomponents_hopper_side.png",
+				 "lwcomponents_hopper_side_spout.png", "lwcomponents_hopper_side.png" },
+   drawtype = "nodebox",
+   node_box = {
+      type = "fixed",
+		fixed = {
+			{-0.375, -0.375, -0.375, 0.375, 0.3125, 0.375}, -- body
+			{-0.5, 0, -0.5, -0.3125, 0.5, 0.5}, -- funnel_1
+			{-0.5, 0, 0.3125, 0.5, 0.5, 0.5}, -- funnel_2
+			{-0.5, 0, -0.5, 0.5, 0.5, -0.3125}, -- funnel_3
+			{0.3125, 0, -0.5, 0.5, 0.5, 0.5}, -- funnel_4
+			{-0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125}, -- spout_side
+		}
+   },
+   selection_box = {
+      type = "fixed",
+		fixed = {
+			{-0.375, -0.375, -0.375, 0.375, 0.3125, 0.375}, -- body
+			{-0.5, 0, -0.5, 0.5, 0.5, 0.5}, -- funnel
+			{-0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125}, -- spout_side
+		}
+   },
+   collision_box = {
+      type = "fixed",
+		fixed = {
+			{-0.375, -0.375, -0.375, 0.375, 0.3125, 0.375}, -- body
+			{-0.5, 0, -0.5, 0.5, 0.5, 0.5}, -- funnel
+			{-0.3125, -0.3125, 0.5, 0.3125, 0.3125, 0.3125}, -- spout_side
+		}
+   },
+	paramtype = "light",
+	param1 = 0,
+	paramtype2 = "facedir",
+	param2 = 0,
+	drop = "lwcomponents:hopper",
+	groups = { cracky = 3, not_in_creative_inventory = 1 },
+	sounds = default.node_sound_stone_defaults (),
+
+   on_construct = on_construct,
+   on_destruct = on_destruct,
+	after_place_node = after_place_node,
+})
+
+
+
+local function run_hoppers ()
+	for spos, _ in pairs (hopper_list) do
+		run_hopper_action (minetest.string_to_pos (spos))
+	end
+
+	minetest.after (hopper_interval, run_hoppers)
+end
+
+
+
+minetest.register_on_mods_loaded (function ()
+	minetest.after (3.0, run_hoppers)
+end)
+
+
+
+end -- utils.hopper_supported
diff --git a/init.lua b/init.lua
index d5b4e48..3ae1c3d 100644
--- a/init.lua
+++ b/init.lua
@@ -16,6 +16,7 @@ local utils = { }
 local modpath = minetest.get_modpath ("lwcomponents")
 
 loadfile (modpath.."/settings.lua") (utils)
+utils.get_dummy_player = loadfile (modpath.."/dummy_player.lua") ()
 loadfile (modpath.."/utils.lua") (utils, mod_storage)
 loadfile (modpath.."/explode.lua") (utils)
 loadfile (modpath.."/api.lua") (utils)
@@ -32,6 +33,7 @@ loadfile (modpath.."/breaker.lua") (utils)
 loadfile (modpath.."/deployer.lua") (utils)
 loadfile (modpath.."/fan.lua") (utils)
 loadfile (modpath.."/conduit.lua") (utils, mod_storage)
+loadfile (modpath.."/hopper.lua") (utils, mod_storage)
 loadfile (modpath.."/cannon.lua") (utils)
 loadfile (modpath.."/cannon_shell.lua") (utils)
 loadfile (modpath.."/pistons.lua") (utils)
diff --git a/screenshot.png b/screenshot.png
index f77650e..5eb753b 100644
Binary files a/screenshot.png and b/screenshot.png differ
diff --git a/storage.lua b/storage.lua
index a599f7e..15ef75c 100644
--- a/storage.lua
+++ b/storage.lua
@@ -200,20 +200,6 @@ local consolidation_interval = 20
 
 
 
-local function unescape_description (description)
-	if description:sub (1, 4) == string.char (27, 40, 84, 64) then
-		local last = description:find (")", 5, true)
-
-		if last then
-			description = description:sub (last + 1, -1)
-		end
-	end
-
-	return description:gsub (string.char (27, 70), ""):gsub (string.char (27, 69), "")
-end
-
-
-
 local function unit_inventory (pos, owner, inv_list)
 	local node = utils.get_far_node (pos)
 
@@ -333,15 +319,14 @@ local function get_stock_list (pos)
 
 		if tstack and tstack.meta and count_table_keys (tstack.meta) > 0 then
 			custom = true
-
-			if stack:get_meta ():get_string ("description") ~= "" then
-				description = stack:get_meta ():get_string ("description")
-			end
-
 			pallet_index = tstack.meta.palette_index
 		end
 
-		if not description then
+		if stack:get_short_description () ~= "" then
+			description = stack:get_short_description ()
+		elseif stack:get_description () ~= "" then
+			description = stack:get_description ()
+		else
 			description = name
 
 			local def = utils.find_item_def (name)
@@ -358,7 +343,7 @@ local function get_stock_list (pos)
 		list[#list + 1] =
 		{
 			name = stack:get_name (),
-			description = unescape_description (description),
+			description = utils.unescape_description (description),
 			id = k,
 			count = v.count,
 			custom = custom,
@@ -721,8 +706,11 @@ local function get_formspec_list (pos)
 		local stack = ItemStack (k)
 		local smeta = stack:get_meta ()
 
-		if smeta and smeta:get_string ("description") ~= "" then
-			description = smeta:get_string ("description")
+
+		if stack:get_short_description () ~= "" then
+			description = stack:get_short_description ()
+		elseif stack:get_description () ~= "" then
+			description = stack:get_description ()
 		else
 			local def = utils.find_item_def (stack:get_name ())
 
@@ -738,7 +726,7 @@ local function get_formspec_list (pos)
 		list[#list + 1] =
 		{
 			item = k,
-			description = unescape_description (description),
+			description = utils.unescape_description (description),
 			count = v.count
 		}
 	end
diff --git a/utils.lua b/utils.lua
index e38f187..b834722 100644
--- a/utils.lua
+++ b/utils.lua
@@ -225,6 +225,40 @@ end
 
 
 
+function utils.table_equal (t1, t2)
+	for k, v in pairs (t1) do
+		if type (t2[k]) ~= type (v) then
+			return false
+		end
+
+		if type (v) == "table" then
+			if not utils.table_equal (v, t2[k]) then
+				return false
+			end
+		elseif v ~= t2[k] then
+			return false
+		end
+	end
+
+	for k, v in pairs (t2) do
+		if type (t1[k]) ~= type (v) then
+			return false
+		end
+
+		if type (v) == "table" then
+			if not utils.table_equal (v, t1[k]) then
+				return false
+			end
+		elseif v ~= t1[k] then
+			return false
+		end
+	end
+
+	return true
+end
+
+
+
 function utils.is_same_item (item1, item2)
 	local copy1 = ItemStack (item1)
 	local copy2 = ItemStack (item2)
@@ -233,7 +267,42 @@ function utils.is_same_item (item1, item2)
 		copy1:set_count (1)
 		copy2:set_count (1)
 
-		return copy1:to_string () == copy2:to_string ()
+		return utils.table_equal (copy1:to_table (), copy2:to_table ())
+	end
+
+	return false
+end
+
+
+
+function utils.unescape_description (description)
+	description = description:gsub (string.char (27, 70), ""):
+									  gsub (string.char (27, 69), ""):
+									  gsub ("\n", " ")
+
+	local first = description:find (string.char (27, 40, 84, 64), 1, true)
+	while first do
+		local last = description:find (")", first + 4, true)
+
+		if not last then
+			last = first + 3
+		end
+
+		description = description:sub (1, first - 1)..description:sub (last + 1)
+
+		first = description:find (string.char (27, 40, 84, 64), 1, true)
+	end
+
+	return description
+end
+
+
+
+function utils.is_drop (obj)
+	if obj then
+		local entity = obj.get_luaentity and obj:get_luaentity ()
+
+		return (entity and entity.name and entity.name == "__builtin:item")
 	end
 
 	return false