IR Sensor Module

My project is about an IR sensor module used to detect motion and control a relay. It’s a simple automation system that can turn on lights or alarms when someone passes by. I decided to make this project because I wanted to build a practical circuit that works without any coding or microcontroller, and can be useful in homes or offices for energy saving and security.

The IR sensor sends out infrared light, and when something passes in front of it, the light reflects back. The sensor detects this and sends a signal to activate the relay, which then turns on a connected device like a lamp or buzzer.

I built and tested the circuit using Proteus software, and it worked exactly as expected. It’s a great example of how simple electronics can create useful automation systems.