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How to Make a Laser Security Alarm System at Home Using BC547 & LDR #diy #diyprojects
In this video, learn how to make a Laser Security Alarm System at Home using simple components like BC547 transistor, LDR, Laser Module, Resistors, Buzzer, and a 9V Battery. This DIY laser tripwire project is perfect for home safety, science exhibitions, and fun electronics experiments. 🔧 What You'll Learn: How a laser and LDR can detect ...
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