This project uses an MQ2 gas sensor, relay module (for motor or exhaust fan), buzzer, and LEDs to create a complete gas leakage detection and alert system using Arduino. When gas concentration crosses ...

This project is a safety monitoring system designed to detect hazardous gas leaks using an MQ2 gas sensor interfaced with an Arduino UNO. The MQ2 sensor detects gases such as LPG, methane (CH₄), ...