Arduino Night Security Alarm with PIR Sensor. January 31, 2014 by T.K. Hareendran Comments 7. Advertisement. In the microcontroller era today, Arduino is more than just a tool to accomplish hobby ...

However, if you’re just looking to catch a sandwich thief at work or a cat spilling over all you water bottles, then Make shows you how to build an alarm system with an Arduino and a USB camera.