The main principle of the circuit is to provide security using PIR sensor. This can be used in the museums to protect the valuable things and also in defense applications to detect the humans in war ...

Let me introduce another simple microcontroller-based do-it-yourself circuit that detects motion and excites a light source in a flash. The “snooper” here is an ordinary passive infrared (PIR) motion ...

December 8, 2015 Add as a preferred source on Google Add as a preferred source on Google Alarm systems are complicated affairs. However, if you’re just looking to catch a sandwich thief at work or a ...