How to make a simple Laser Security System
4:19
YouTubeHani's Experiments
How to make a simple Laser Security System
This a simple laser security system anyone can make at home. This system can be installed in houses to protect from thieves. Things:- 1. laser 2. 9v battery 3. buzzer 4. 2.2k ohm resistor 5. BC547 transistor 6. LDR 7. 9v battery connector CIRCUIT DIAGRAM:- https://drive.google.com/drive/folders/1No1tHA0R9qPUZkbrvNzPWSd78O9wy2QE?usp=sharing My ...
379.1K viewsApr 17, 2020
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