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1.STM32F103RCT6最小系统板
2. JQC-3FF-S-Z5VDC继电器模
3.使用方法与点亮LED灯无异。
https://blog.csdn.net/zhenglu777999/article/details/124256688?spm=1001.2014.3001.5502https://blog.csdn.net/zhenglu777999/article/details/124256688?spm=1001.2014.3001.5502