torches

while true do
  turtle.forward()
  turtle.forward()
  turtle.forward()
  turtle.forward()
  turtle.forward()
  turtle.forward()
  turtle.forward()
  turtle.forward()
 sleep(1.5)
  turtle.placeDown()
 sleep(1)
  if turtle.detect() then
      print "There's a block in front of me!!"
  end
 end