Build an LPG Gas Leak Alarm with Arduino Uno – Home Safety Project Kit

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Imagine a kitchen where the faint smell of LPG triggers an instant, loud buzzer, red lights flash, and an exhaust fan roars to life—all before you even notice. This kit lets you build exactly that, transforming Arduino Uno, an MQ-2 sensor, and a few basic components into a responsive gas-leak alarm with active ventilation. Beyond a school project, it’s a genuine safety upgrade for homes, tinkering labs, and hostel rooms.

What You'll Build

You’ll assemble a fully functional gas leak alarm that monitors LPG, propane, and methane levels using an MQ-2 sensor. When the gas concentration exceeds a safe threshold, the buzzer blares, red LEDs flash, and a relay activates a connected exhaust fan to ventilate the room. The system uses Arduino Uno to process analog data and control all outputs—a real-world embedded systems project.

What You'll Learn

• How to interface a MQ-2 gas sensor with Arduino Uno and read analog ppm values
• Writing threshold-based conditional logic in Arduino C to trigger alarms and relays
• Using a 5V relay module to control high-voltage AC appliances like exhaust fans
• Building a reliable circuit on a breadboard with LEDs, buzzers, and protective diodes

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is designed for CBSE Class 11–12 students building a physics or computer science project, first-year B.Tech ECE/EEE students doing mini projects, and ATL Tinkering Lab mentors looking for a ready-made home automation experiment. It also works for Smart India Hackathon safety-themed ideas, giving a dependable hardware base to extend.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.