PIR Motion Sensor Explained | DIY Arduino Project | Hobitronics

Ever seen lights turn on automatically when someone walks in? That’s the magic of a PIR Motion Sensor!
In this quick project demo, we’ll show you how PIR sensors detect human or animal movement using infrared — and how you can use them in Arduino projects like alarms, smart lights, and more!

Perfect for beginners, students, and anyone into electronics. Build your own motion-based tech today!

Advantages of PIR Motion Sensors:
Low power consumption
Cost-effective and easy to use
No physical contact needed
Reliable for indoor and outdoor use
Works in complete darkness too

Applications You Can Build:
Motion-activated lights
Burglar alarms
Pet monitoring systems
Energy-saving automation
Smart home security systems

Build this full project now on: https://github.com/Hobitronics/sensor-based-arduino-projects/blob/main/code/pir_sensor.ino
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