mods that hopefully work for a TechAge-based pack
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--[[
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TechAge
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=======
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Copyright (C) 2019-2025 Joachim Stolberg
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AGPL v3
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See LICENSE.txt for more information
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TA3 CRT Monitor
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]]--
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local S = techage.S
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local M = minetest.get_meta
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local MENU = {
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{
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type = "dropdown",
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choices = "16x8,20x10,24x12,28x14,32x16,36x18,40x20",
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name = "resolution",
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label = S("Resolution"),
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tooltip = S("Select resolution of the monitor in characters x lines"),
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default = "8",
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values = {8,10,12,14,16,18,20},
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},
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{
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type = "dropdown",
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choices = "green,amber,yellow,white",
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name = "color",
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label = S("Color"),
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tooltip = S("Select color of the screen text"),
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default = "#2DD204",
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values = {"#2DD204","#F8C800","#DFD700","#CCCCCC"},
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},
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}
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local function update(pos, objref)
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pos = vector.round(pos)
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local nvm = techage.get_nvm(pos)
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-- local t = core.get_us_time()
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lcdlib.on_mono_display_update(pos, objref, nvm.text or {})
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-- t = core.get_us_time() - t
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-- print("time =", t)
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end
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local function on_timer(pos)
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local mem = techage.get_mem(pos)
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mem.ticks = mem.ticks or 0
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if mem.ticks > 0 then
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lcdlib.update_entities(pos)
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mem.ticks = mem.ticks - 1
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end
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return true
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end
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minetest.register_node("techage:ta3_monitor", {
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description = S("TA3 CRT Monitor"),
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tiles = {-- up, down, right, left, back, front
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'techage_monitor_top.png',
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'techage_monitor_top.png',
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'techage_monitor_side.png^[transformFX',
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'techage_monitor_side.png',
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'techage_monitor_back.png',
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'techage_monitor_front.png',
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},
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drawtype = "nodebox",
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paramtype2 = "facedir",
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node_box = {
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type = "fixed",
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fixed = {
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{-16/32, -16/32, -15/32, 16/32, 16/32, 8/32},
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{-10/32, -10/32, 8/32, 10/32, 10/32, 12/32},
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},
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},
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paramtype = "light",
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use_texture_alpha = techage.CLIP,
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sunlight_propagates = true,
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light_source = 8,
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ta3_formspec = MENU,
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ta_after_formspec = function(pos, fields, playername)
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if fields.save then
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lcdlib.update_entities(pos)
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local resolution = M(pos):get_int("resolution")
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local cycle_time = resolution * resolution / 64
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print("cycle_time =", cycle_time)
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minetest.get_node_timer(pos):start(cycle_time)
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end
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end,
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display_entities = {
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["techage:monitor_entity"] = {
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depth = -0.48,
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yoffs = 0.025,
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size = {x=0.90, y=0.90},
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on_display_update = update
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},
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},
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after_place_node = function(pos, placer)
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local number = techage.add_node(pos, "techage:ta3_monitor")
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local meta = M(pos)
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meta:set_string("number", number)
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meta:set_int("resolution", 8)
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meta:set_string("color", "#33FF00")
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meta:set_string("infotext", S("TA3 CRT Monitor no:") .. " " .. number)
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local nvm = techage.get_nvm(pos)
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nvm.text = {"My", "Techage","TA3", "CRT Monitor", "No: " .. number}
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lcdlib.update_entities(pos)
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minetest.get_node_timer(pos):start(1)
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end,
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after_dig_node = function(pos, oldnode, oldmetadata)
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techage.remove_node(pos, oldnode, oldmetadata)
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techage.del_mem(pos)
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end,
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on_timer = on_timer,
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on_destruct = lcdlib.on_destruct,
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on_rotate = lcdlib.on_rotate,
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groups = {cracky=2, crumbly=2},
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is_ground_content = false,
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sounds = default.node_sound_glass_defaults(),
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})
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minetest.register_craft({
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output = "techage:ta3_monitor",
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recipe = {
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{"", "", ""},
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{"techage:basalt_glass_thin", "dye:green", ""},
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{"techage:vacuum_tube", "default:copper_ingot", "techage:vacuum_tube"},
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},
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})
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local function add_line(pos, payload, cycle_time)
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local nvm = techage.get_nvm(pos)
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local mem = techage.get_mem(pos)
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local num_rows = M(pos):get_int("resolution") or 8
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nvm.text = nvm.text or {}
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mem.ticks = mem.ticks or 0
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local str = tostring(payload) or "oops"
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if mem.ticks == 0 then
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mem.ticks = cycle_time
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end
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while #nvm.text >= num_rows do
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table.remove(nvm.text, 1)
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end
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table.insert(nvm.text, str)
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end
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local function write_row(pos, payload, cycle_time, beduino)
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local nvm = techage.get_nvm(pos)
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local mem = techage.get_mem(pos)
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local num_rows = M(pos):get_int("resolution") or 8
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local str, row
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nvm.text = nvm.text or {}
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mem.ticks = mem.ticks or 0
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if beduino or type(payload) == "string" then
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-- split string into row and text on the first blank
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words = string.split(payload, " ", false, 1, false)
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row = tonumber(words[1] or "1") or 1
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str = words[2] or "oops"
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else
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str = tostring(payload.get("str")) or "oops"
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row = tonumber(payload.get("row")) or 1
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end
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if mem.ticks == 0 then
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mem.ticks = cycle_time
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end
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if row < 1 then row = 1 end
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if row > num_rows then row = num_rows end
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while #nvm.text < row do
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table.insert(nvm.text, "")
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end
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nvm.text[row] = str
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end
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local function clear_screen(pos, cycle_time)
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local nvm = techage.get_nvm(pos)
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local mem = techage.get_mem(pos)
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mem.ticks = mem.ticks or 0
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if mem.ticks == 0 then
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mem.ticks = cycle_time
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end
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nvm.text = {}
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end
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techage.register_node({"techage:ta3_monitor"}, {
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on_recv_message = function(pos, src, topic, payload)
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if topic == "add" then -- add one line and scroll if necessary
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add_line(pos, payload, 1)
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elseif topic == "set" then -- overwrite the given row
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write_row(pos, payload, 1)
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elseif topic == "clear" then -- clear the screen
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clear_screen(pos, 1)
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end
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end,
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on_beduino_receive_cmnd = function(pos, src, topic, payload)
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if topic == 67 then -- add one line and scroll if necessary
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add_line(pos, payload, 1)
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elseif topic == 68 then -- overwrite the given row
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write_row(pos, payload, 1, true)
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elseif topic == 17 then -- clear the screen
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clear_screen(pos, 1)
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else
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return 2
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end
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return 0
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end,
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on_node_load = function(pos)
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lcdlib.update_entities(pos)
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end,
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})
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lcdlib.register_display_entity("techage:monitor_entity")
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