function tanken()
	turtle.select(3)
	turtle.suckUp(1)
	turtle.refuel(1)
end

function redstone()
	turtle.select(2)
	turtle.suckDown(1)
end

function abbau()
	turtle.select(1)
	sleep(0.5)
	turtle.dig()
	turtle.select(2)
	turtle.place()
	sleep(0.5)
	turtle.select(1)
	turtle.dropDown(1)
end




while true do
	tank = turtle.getFuelLevel()
	if tank < 10 then
		tanken()
	end
	redstone()
	sleep(0.5)
	abbau()
end