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基于PIR传感器的安全警报
在这个简单的 DIY 项目中,我将向您展示如何设计和实现基于 PIR传感器的安全警报系统。我设计的这个电路使用 Arduino 作为主控制器,当然还有 PIR传感器本身。此外,我还使用了UM3561IC(警报器发生器IC),通过扬声器产生必要的警报声。 通常,在家庭、商店 ...
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'Top Gun' actor dies
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Epstein victims to get $72.5M
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MO Rep. Graves to retire
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Leaving NBC News
CA bans officials from betting
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Trump names NLRB chair
Found guilty of 25 violations
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On US ground troops in Iran
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Houthis strike Israel
Ordered better attorney access
CBS cancels ‘Watson' & ‘DMV’
Scoffs at retirement talk
Tennessee school bus crash
Famed forensic scientist dies
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