test

function diguploop()
  turtle.dig()
  turtle.forward()
  turtle.digUp()
end

function dostuff()
  diguploop()

  turtle.turnLeft()

  diguploop()

  turtle.turnRight()
  turtle.turnRight()
  turtle.forward()
  diguploop()

  turtle.turnLeft()
  turtle.turnLeft()
  turtle.forward()
  turtle.turnRight()
end
function placeit()
  turtle.placeDown(1)
end

while true do
  dostuff()
  if turtle.detectDown() == false then
    placeit()
  elseif turtle.detectDown() == true then
    print ("[*] Bottom block detected")
end
end