DIY Intruder Alarm with LDR Sensor | Arduino Security Project
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DIY Intruder Alarm with LDR Sensor | Arduino Security Project
Click CC to select English, Malay, Indonesian, Filipino, and Hindi subtitles! In this project, we’ll build a simple light-based alarm system using an LDR sensor and an Arduino Uno. When light is blocked—like someone walking past or breaking a beam—the system triggers an LED alert, just like a basic laser tripwire. Perfect for beginners ...
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