Overview
Build a gas leak detection system that monitors air quality using an MQ-2 sensor, sounds a local buzzer alarm when gas concentration is dangerous, and pushes readings to a free cloud IoT dashboard (ThingSpeak) for remote monitoring.
How It Works
The MQ-2 sensor outputs an analog voltage that rises with the concentration of combustible gases (LPG, methane, smoke). The ESP32 reads this voltage via its ADC, compares it against a configurable threshold, and triggers a buzzer and LED when the level is too high. Simultaneously, the ESP32 connects to Wi-Fi and posts the sensor readings to ThingSpeak every 15 seconds, allowing you to view a live graph from any browser.
What You Will Build
A complete, working gas detector using real ESP32 hardware, sensors, and motors. You will take it home once the course is complete.
Hardware Components
Project Details
Full Build Guide
Wiring diagrams, step-by-step build instructions, full code, and troubleshooting — available after enrollment.
Book a DemoBook 30-min Consult