RCturtle

modem = peripheral.wrap("left")
modem.open(5)
turtle.refuel()
while true do
    local event, modemSide, senderChannel, replyChannel, message, senderDistance = os.pullEvent("modem_message")

    if message == "forward" then turtle.forward()
    print("going forward")
    end

    if message == "left" then turtle.turnLeft()
        print("turning left")
    end

    if message == "right" then turtle.turnRight()
        print("turning right")
    end

    if message == "backwards" then turtle.back()
        print("going backwards")
    end

end