Garage Smoke Alarm Kit with Arduino Uno — Auto Ventilation and Flashing LED Alert

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

Picture this: toxic smoke from a forgotten car exhaust or a smoldering paint can fills your garage. With this kit, you'll build an automatic system that detects dangerous smoke levels, triggers a loud alarm, flashes warning lights, and activates an exhaust fan to vent the space — all controlled by an Arduino Uno. No more guessing if your garage is safe to enter; the system responds in seconds.

What You'll Build

You'll assemble a functional smoke alarm that continuously monitors air quality using an MQ-2 gas sensor. When smoke concentration exceeds a safe threshold, a buzzer sounds, three red LEDs flash, and a relay module switches on a 12V exhaust fan. The system resets automatically when the air clears, making garages safer for occupied spaces like workshops. Every component is plug-and-play on the breadboard, so you can test and iterate before final installation.

What You'll Learn

• Interfacing an MQ-2 gas sensor with Arduino and calibrating its analog output for real-world smoke detection.
• Using a relay module to control high-power devices like exhaust fans safely, with diode protection against flyback voltage.
• Programming threshold-based alarm logic with debouncing and hysteresis to prevent false triggers.
• Wiring multicolor LED warning indicators and active buzzers on a breadboard while managing current with resistors.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is ideal for CBSE Class 11–12 students tackling sensor-based alarm projects, B.Tech ECE/EEE undergraduates learning relay control and analog sensors, and ATL Tinkering Lab mentors guiding fire safety automation. Smart India Hackathon participants can prototype a garage fire ventilation system quickly, while IIT, NIT, VIT, and BITS hobbyists will appreciate the modular design for custom extensions.

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.