Vacuum

rednet.open("left")

local function move()
  if turtle.detect() then
    turtle.up()
    turtle.forward()
  else
    if turtle.detectDown() then
    else
    turtle.down()
    end
  turtle.suck()
  turtle.forward()
  end
end

local function turnRight()
  turtle.turnRight()
  turtle.forward()
  turtle.turnRight()
end

local function turnLeft()
  turtle.turnLeft()
  turtle.forward()
  turtle.turnLeft()
end

local function row8()
  i = 9
  repeat
	 move()
	 i = i - 1
  until i < 1
end


repeat

  local senderId, message, distance = rednet.receive()
  print("Beginning in 2 min")
  sleep(120)
  row8()
  turnRight()
  row8()
  turnLeft()
  row8()
  turnRight()
  row8()
  turnLeft()
  row8()
  turnRight()
  row8()
  turnLeft()
  row8()
  turnRight()
  row8()
  turnLeft()
  row8()
  turnRight()
  sleep(120)

until redstone.getInput("right")