launch_bay_door

term.clear()

while true do
  while turtle.detectUp() do
    term.clear()
    print("Bay doors open.")
    redstone.setOutput("bottom", false)
    os.sleep(30)
  end
  term.clear()
  print("Bay doors opening sequence activated.")
  os.sleep(40)

  while not turtle.detectUp() do
    term.clear()
    print("Bay doors closed.")
    redstone.setOutput("bottom", true)
    os.sleep(5)
  end
end