Gas Detector Using Arduino 🔥 | MQ135 Sensor with Buzzer Alarm | Simple DIY Project

This project shows how to make a simple gas detection alarm using the MQ-135 gas sensor and Arduino UNO, with only the analog pin connection. Whenever the sensor detects harmful gases or smoke, a buzzer automatically starts beeping, warning about the gas leak or air pollution. GitHub Link: https://github.com/patelsp-sourav/MQ1... Project Features: Uses MQ-135 analog output only Detects CO₂, CO, LPG, Smoke, and Ammonia gases Buzzer alarm when gas crosses threshold Easy to build for beginners Components Used: Arduino UNO MQ135 Gas Sensor Module Buzzer (5V active) Jumper wires and breadboard Watch till end to see real testing and how the sensor reacts to gas exposure 💨 #Arduino #MQ135 #GasDetector #ElectronicsProject #DIY #TechProject #BuzzerAlarm #AirQuality #ArduinoProjects #IoT #SensorProject #shorts