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Laser Based Security Alarm System Using LDR & Buzzer | Arduino / Without Arduino
This video demonstrates a Laser Based Security Alarm System designed for door protection, home safety, shop security, and lab safety environments. When the laser beam is interrupted, the LDR detects the change in light and automatically activates the buzzer alarm. This project is simple, cost-effective, and suitable for Diploma, B.Tech, B.E, B ...
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