baum

function fell()
  while(turtle.forward()==false) do
    turtle.dig()
  end
  while(turtle.detectUp()) do
    turtle.digUp()
    turtle.up()
  end
  while(turtle.down()) do end
  while(turtle.back()==false) do end
end

function place()
  turtle.select(2)
  turtle.place()
 turtle.select(1)
end

function collect()
  turtle.suck()
  while(turtle.down()==false) do end
  turtle.suckDown()
  while(turtle.up()==false) do end
end

while(true) do
  if(turtle.compare()) then
    fell()
    place()
    sleep(5)
    collect()
  end
end