MQ-2 Smoke & Gas Sensor Starter Kit with Arduino Uno — Build Your Own Air Safety Alarm

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 building a device that keeps your kitchen safe by detecting LPG leaks or cigarette smoke, flashing a red LED and sounding an alarm while showing exact gas concentration on an LCD. With this kit, you'll assemble exactly that — a real-time air quality monitor that could one day prevent a disaster. No prior electronics experience needed; just curiosity and a few hours.

What You'll Build

You'll build a functional gas leak detector that senses LPG, smoke, and combustible vapours, triggering a loud buzzer and bright LED when levels exceed a safe threshold. The 16x2 LCD displays the live sensor reading in parts per million (PPM), so you can see exactly how polluted the air is. It's a working prototype of the kind of system used in homes, hotels, and factories across India.

What You'll Learn

• How to interface an MQ-2 analog sensor with Arduino and read gas concentrations.
• Programming conditional logic to trigger alerts when danger levels are detected.
• Displaying real-time sensor data on an I2C LCD.
• Building a complete electronic circuit on a breadboard without soldering.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is ideal for students preparing CBSE Class 9–10 science projects on gas leak detection, young innovators at ATL Tinkering Labs, or hobbyists prototyping home safety alarms. With adult help, children as young as 8 can assemble the circuit. B.Tech ECE students also use it to demonstrate analog sensor interfacing.

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