Gas Leak Shutoff System Kit with Arduino Uno + Sensor
Build a Professional Gas Leak Auto-Shutoff System with Arduino Uno + GSM Alerts
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 or lab where a gas leak automatically triggers not just an alarm, but also physically shuts the gas valve while sending an instant SMS. This kit lets you build that exact failsafe—a dual-sensor Arduino Uno system that monitors LPG and carbon monoxide levels continuously, then reacts before a leak becomes a disaster. The project is ideal for final-year engineering students, safety-conscious makers, and Smart India Hackathon participants who need a demonstrable, real-world safety prototype.
What You'll Build
You’ll assemble a compact monitoring unit that reads MQ-2 and MQ-7 sensor voltages, processes them on an Arduino Uno, and decides when to activate a 5V relay. That relay closes a 12V solenoid gas valve to cut the supply instantly, while a red LED array and a loud active buzzer provide on-site warnings. Simultaneously, the SIM800L GSM module sends a configurable SMS alert to a predefined number, ensuring remote notification even if no one is nearby.
What You'll Learn
- Calibrating MQ-2 and MQ-7 gas sensors for multi-gas threshold detection
- Driving a solenoid valve safely through a relay and external power stage
- Programming a SIM800L GSM module to send SMS alerts automatically
- Integrating visual, audible, and physical responses in a single embedded system
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| MQ-2 | 1 |
| MQ-7 CO Sensor | 1 |
| SIM800L GSM | 1 |
| 5V Relay Module | 1 |
| Active Buzzer | 1 |
| 5mm Red LED | 3 |
| LM2596 Buck Converter | 1 |
| 1000µF 25V Caps | 2 |
| 10kΩ Resistors | 5 |
| 220Ω Resistors | 5 |
| PCB Prototype Board | 2 |
| 12V Solenoid Gas Valve | 1 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This advanced kit suits B.Tech ECE / EEE students working on final-year projects or Smart India Hackathon submissions that demand a working safety prototype. It is equally valuable for ATL Tinkering Lab mentors running industrial safety modules and for IIT, NIT, VIT, or BITS students who need a reliable embedded system with actionable feedback. If you have basic Arduino programming experience and want to tackle real-world gas hazard mitigation, this kit delivers a hands-on, outcome-driven learning experience.
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.
What if I get stuck during the build?
Scan the QR on the kit box to access the AI companion, which has the complete circuit and code for this system. For real-time help, drop a WhatsApp message and we'll guide you through the exact step.
Does the kit include a SIM card for the GSM module?
No, the kit does not include a SIM card. You'll need a standard 2G-enabled SIM with SMS balance, easily available at any Indian mobile store.
Can I integrate this system with Wi‑Fi instead of GSM?
Yes, the logic is transferable. The AI companion includes notes on replacing the SIM800L with an ESP8266 or NodeMCU for internet-based alerts if you choose to upgrade later.
What gas threshold settings should I use?
The AI companion provides safe default code with adjustable analog thresholds. You can fine‑tune them based on your environment, and the companion guides you through sensor calibration using a lighter or gas source.
MQ-2 + MQ-7 sensors detect gas. Relay closes solenoid gas valve, triggers alarm and SIM800L sends SMS.
What's in this kit
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items