RE: RE: 使用香蕉派M3驱动无源蜂鸣器
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RE: 使用香蕉派M3驱动无源蜂鸣器

oflyhigh(86)
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#cn
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7y

哇，专家来啦
用2K、4K频率试了一下，效果还是不佳😳
不过这样的蜂鸣器用Arduino的硬件PWM驱动，声音就好听多啦（以前弄过）

cn
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