boiler and turbine monitor

boiler = peripheral.wrap("solid_fueled_boiler_firebox_0")
turbine = peripheral.wrap("steam_turbine_housing_1")
mon = peripheral.wrap("left")

function roundNum(val, decimal)
  if decimal then
      return math.floor(((val * 10^decimal) + 0.5) / (10^decimal))
  end
end

while true do

local connected = turbine.isAddedToEnergyNet()
local help = turbine.needsMaintenance()

local temp = roundNum(boiler.getTemperature(), 0)

mon.setTextScale(2)
local x,y = mon.getSize()
mon.clear()
if temp < 100 or boiler.needsFuel() == true then
  mon.setTextColor(colors.red)

elseif temp < 400 then
  mon.setTextColor(colors.orange)

elseif temp > 400 then
  mon.setTextColor(colors.lime)
end

local fuel = boiler.needsFuel()
mon.setCursorPos(1,1)
if fuel == true then
  mon.write("FUEL LOW")
end


mon.setCursorPos(x/2-1,2)
mon.write("HEAT%")
mon.setCursorPos(x/2-1,3)
mon.write(temp / 5 .. " %")


if help=="true" then
    mon.setTextColor(colors.red)
    mon.setCursorPos(x/2-1,y-2)
    mon.write("POWER")
    mon.setCursorPos(x/2-2,y-1)
    mon.write("OFFLINE")
end
if help=="false" then
    mon.setTextColor(colors.lime)
    mon.setCursorPos(x/2-1,y-2)
    mon.write("POWER")
    mon.setCursorPos(x/2-1,y-1)
    mon.write("ONLINE")
end

sleep(0.2)
sleep(0)

end