startup

rednet.open("right")

print("My ears are open.")

local id, msg, proto = rednet.receive()

if msg == "open" then
  for x=4,1,-1 do
    peripheral.call("back","move",0,false,true)
    sleep(1.5)
  end
end

if msg == "close" then
  for y=4,1,-1 do
    peripheral.call("back","move",1,false,true)
    sleep(1.5)
  end
end

os.reboot()