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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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US strikes ISIS targets
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Report: Gaza famine averted
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Mamdani appointee resigns
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NJ Transit trains collide
US sanctions more relatives
RU strikes UKR port
Bowen Yang to exit 'SNL'
Suspend radio broadcaster
US seizes another vessel
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