Скачать или смотреть Ultrasonic Sensor with Buzzer Alert | Arduino Security Project

In this project, we’ve used an ultrasonic sensor to detect objects within 10 cm.  

When anything comes close, the buzzer automatically turns ON — perfect for basic security or alert systems.


Project Highlights:

Distance detection using HC-SR04 sensor  

Buzzer alert system using Arduino UNO  

Easy and simple DIY project  


🎯 Best for beginners and school projects!  

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