CC Oxygen Monitor

local title        = "Spawn Oxygen"
local monitorSide  = "right"
local redstoneSide = "left"

function pullRedstone()
  os.pullEvent("redstone")
end

function sleepASec()
  sleep(1)
end

while (true) do
  mon = peripheral.wrap(monitorSide)
  mon.clear()
  sizeX,sizeY = mon.getSize()
  titlePos = math.floor(sizeX/2) - math.floor(#title / 2)
  if (titlePos < 1) then
    titlePos = 1
  end
  if (redstone.getInput(redstoneSide)) then
    oxyStatus = colors.lightBlue
  else
    oxyStatus = colors.red
  end

  mon.setCursorPos(titlePos+1,1)
  mon.write(title)

  mon.setBackgroundColor(oxyStatus)
  for x = 2, sizeX - 1, 1 do
    for y = 3, sizeY - 1, 1 do
      mon.setCursorPos(x,y)
      mon.write(" ")
    end
  end
  mon.setBackgroundColor(colors.black)

  parallel.waitForAny(sleepASec, pullRedstone)
end