collector

function tunnel()
  for i=1,10,1 do
    turtle.dig()
    turtle.forward()
  end
  for i=1,3,1 do
    turtle.digUp()
    turtle.up()
  end
end

function reverseTunnel()
  for i=1,3,1 do
    turtle.digDown()
    turtle.down()
  end
  for i=1,10,1 do
    turtle.dig()
    turtle.forward()
  end
end

function dump()
  turtle.turnRight()
  for i=1,16,1 do
    turtle.select(i)
    turtle.drop()
  end
end

function collect()
  dump()
  turtle.turnRight()
  reverseTunnel()
  sucked = true
  while sucked == true do
    sucked = turtle.suck()
  end
  turtle.turnRight()
  turtle.turnRight()
  tunnel()
  os.sleep(900)
  collect()
end

collect()