Using Ultrasonic Distance Sensor HC-SR04 with Buzzer, LED and Arduino
DIY Home Security - New Video:
In this Arduino Tutorial we will learn how the HC-SR04 Ultrasonic Sensor works and how...
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![[30min] Mouse Repellent Noise - Cat’s meows and ultrasonic sounds make mice flee from your home.](https://sun9-62.userapi.com/erEOAq0vE01oCQFmLTz4P3ydVx3Uu2AYqutu0g/f06f3mXuId8.jpg)
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