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按照追球小车视频做实验，测试car.py程序时，视频上程序写入开发板的内存后，连接电脑状态时，在IDE里点击开始，小车轮子是可以转动的，可以我点击运行，能听到小车有动一下，但是轮子是不转动的。
硬件是什么？如果是配套的小车应该不会有问题。