wjqok 发表于 2024-11-14 13:27
你怀疑厂家搞错了还是线路断了?
joyb 发表于 2024-11-14 15:00
按键接电源的正极负极都可以,程序不一样,都必须接限流电阻,单片机最大灌电流 ...
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