1TreeChopper

local function checkFuel()
    if turtle.getFuelLevel() == 0 then
        turtle.select(16)
                turtle.refuel(1)
    end --if turtle.getFuelLevel() == 0
end --local function checkFuel()


function start()
    while true do
        checkFuel()

            while turtle.detect() do
                turtle.dig()
                turtle.forward()
            end
            while turtle.detectUp() do
                turtle.digUp()
                turtle.up()
            end
            while turtle.down() do
            end
            turtle.turnRight()
            turtle.turnRight()
            turtle.forward()
            turtle.turnRight()
            turtle.turnRight()
            turtle.select(15)
            turtle.place()
    end
end

start()