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## 整体思路
1、购买金属外壳机器人小车
https://mobile.yangkeduo.com/goods.html?goods_id=647254956695
2、树莓派配置红外遥控及关联python程序
https://blog.csdn.net/Better_man1/article/details/120569785
3、小智机器人获取用户的指令，比如：你离我近一点（前进20CM），你离我远一点（后退20CM），然后利用（2）中的python程序，复制小车的红外遥控信号，向小车发出指令。
