Arduino Metal Detection Alarm Using NPN Proximity Sensor | LED + Buzzer Project #shorts
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Arduino Metal Detection Alarm Using NPN Proximity Sensor | LED + Buzzer Project #shorts
Build a simple Arduino metal detection alarm using an NPN inductive proximity sensor (4mm). When a metal object comes near the sensor, the LED and buzzer turn ON automatically. Perfect for beginners learning Arduino and industrial sensors. Components Used: Arduino Uno NPN Inductive Proximity Sensor (5–36V DC) Active Buzzer LED This project is ...
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