Mini Cable Detector. In this video, I show you how I built an electric cable detector using just two transistors, an LED, and a buzzer, all powered by a simple power bank. It’s a very easy but highly functional circuit, perfect for quickly detecting the presence of electrical wires inside walls or in areas where you can’t see them. Save this video if you enjoy useful DIY electronics projects. Share it with anyone who works with home repairs or wants to learn how to build practical tools. #DIYEle
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