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PIR Sensor Arduino Alarm

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In this simple project, we’ll build a motion-sensing Arduino alarm using a PIR (passive infrared) sensor and an Arduino microcontroller. This is a great way to learn the basics of using digital input (from the sensor) and output (in this case, to a noisy buzzer) on your Arduino. This Arduino alarm is handy for booby traps and practical jokes, and it’s just what you’ll need to detect a zombie invasion! Plus, it’s all built on a breadboard, so no soldering required!

Courtesy: Make:

Project information: click here


 

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