Kitchen LPG Gas Alarm Pro Kit with Arduino Uno + Sensor
Kitchen LPG Gas Alarm Pro Kit with Arduino Uno — See Both Smoke and CO on One Screen
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Your kitchen can silently accumulate dangerous gases long before you smell them. This project brings industrial-grade dual monitoring to your home — a single Arduino Uno reads both an MQ-2 for LPG/smoke and an MQ-7 for carbon monoxide, then shows live ppm levels and automatic danger zones on a colour TFT while sounding an active buzzer if thresholds break. You’ll finish with a legit safety device that thinks in layers and warns in seconds.
What You'll Build
You’ll assemble a standalone gas alarm that continuously watches two independent sensors. The 1.8-inch TFT displays split readings for combustible gases and CO simultaneously, colour-coding the screen green, orange, or red based on concentration. When either sensor hits a dangerous level, a piercing buzzer fires and three red LEDs pulse — giving you physical, visual, and audible alert layers that could genuinely prevent a kitchen disaster.
What You'll Learn
- Calibrating MQ-series sensors to return meaningful parts-per-million values instead of just raw ADC numbers
- Multiplexing two analog sensors on one Arduino and handling asynchronous alert logic
- Driving an ST7735 TFT display with real-time graphics, colour zones, and numeric overlays
- Designing tiered alarm systems that pair a buzzer with visual warnings — the exact logic used in commercial safety panels
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| MQ-2 Gas Sensor | 1 |
| MQ-7 CO Sensor | 1 |
| 1.8in TFT ST7735 | 1 |
| Active Buzzer | 1 |
| 5mm Red LED | 3 |
| 220Ω Resistors | 5 |
| 10kΩ Resistors | 10 |
| 100nF Caps | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 25 |
| 9V Battery Snap | 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 is built for students who need a project that combines hardware, coding, and real‑world impact. CBSE Class 11–12 students tackling sensor‑based practicals, B.Tech ECE/EEE second‑year minors, Smart India Hackathon teams prototyping safety solutions, and ATL Tinkering Lab mentors looking for a ready‑to‑run workshop kit that demonstrates multi‑hazard detection all in one breadboard.
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 box to open your AI build companion — it knows this exact circuit and can walk you through wiring, code, and sensor calibration. WhatsApp and email support is also included.
Do I need to calibrate both sensors separately?
Yes, and the companion provides a calibration sketch that uses clean air and known thresholds. You'll follow a simple routine to get reliable ppm readouts for both MQ-2 and MQ-7 in under ten minutes.
What does the danger-zone display actually show?
The TFT splits the screen into two real‑time bars. Green means safe, orange means elevated, red means critical — and the threshold values are clearly stated in the code comments so you can adjust them for a school lab or a home kitchen.
Can I use this as a permanent kitchen safety device?
This kit is designed as an educational prototype, but the sensor logic and alarm layers are identical to what commercial units do. Many students house their final build in a 3D‑printed case and run it off a 9V adapter for long‑term kitchen use.
Kitchen Safety — MQ-2 and MQ-7 together monitor both smoke/LPG and carbon monoxide. TFT shows both readings with danger zones.
What's in this kit
Other projects you can build
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