Build a Kitchen LPG Gas & Flame Alarm System with Arduino Uno

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 single device that stands guard over your kitchen, sniffing out dangerous LPG leaks and spotting the flicker of a flame before it spreads. This kit puts that power in your hands. You’ll wire up MQ-2 and KY-026 sensors to an Arduino Uno, program responsive logic, and drive two independent relays that can activate an exhaust fan, shut a gas valve, or set off a piercing alarm. By the end, you’ll have a real safety tool—not just a blinking demo—that mirrors the kind of systems used in home-automation and IoT safety projects across India.

What You'll Build

You’ll assemble a complete dual‑hazard alarm on a breadboard. The MQ‑2 continuously monitors for LPG, butane, and smoke; the KY‑026 watches for infrared flame signatures. When gas exceeds a threshold, one relay clicks on (for a fan or solenoid), the buzzer pulses, and a red LED flashes. When flame is detected, the second relay and another LED take over with a distinct alert pattern. The final module sits in a neat breadboard layout you can mount behind a kitchen door—exactly what CBSE and B.Tech students prototype when they tackle real‑world safety challenges.

What You'll Learn

• How to interface the MQ‑2 gas sensor with Arduino and understand its analog concentration curve
• Reading both analog and digital signals from the KY‑026 flame sensor
• Designing relay driver circuits with 1N4007 flyback diodes to control high‑voltage appliances safely
• Programming multi‑condition alarm logic that distinguishes between gas and fire hazards

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This is an intermediate‑level kit built for CBSE Class 11–12 students tackling sensor‑integration projects, first‑year B.Tech ECE/EEE students who need a tangible safety prototype, and participants in Smart India Hackathon or ATL Tinkering Lab challenges. Hobbyists looking to add a practical kitchen alarm without hunting for compatible parts will also find it a neat, complete package.

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.