mainProgram

function paintMon(side, color)
  local mon = peripheral.wrap(side)
  term.redirect(mon)
  local x,y = term.getSize()

  for i=0, x do
    for j=0, y do
      paintutils.drawPixel(i,j,color)
    end
  end

  term.restore()
end

while true do
  local input = redstone.getInput("back")
  term.setCursorBlink(false)
  term.clear()
  term.setCursorPos(3,3)
  term.write("Aux power: ")
  if input==true then
    term.setTextColor(colors.red)
    paintMon("left",colors.red)
    term.write("OFF")
  else
    paintMon("left",colors.green)
    term.setTextColor(colors.green)
    term.write("ON")
  end
  term.setTextColor(colors.white)

  local event, key = os.pullEvent("key")

  if key==keys.enter or key==keys.space then
    if input==true then
      redstone.setOutput("back",false)
    else
      redstone.setOutput("back",true)
    end
  end
end