Gas Chromatography Proxy Multi-Gas Array Kit with Arduino Mega
Master Gas Chromatography Concepts with the Arduino Mega Multi-Gas Sensor Array Kit
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
This kit transforms an Arduino Mega into a four-channel gas array that separates volatile signatures—just like a chromatography column. By sampling MQ-2, MQ-7, MQ-135, and MQ-4 simultaneously and running PCA, you’ll classify gas mixtures without needing a lab-grade chromatograph. Perfect for environmental monitoring stations, engineering capstone projects, and sensor fusion research.
What You'll Build
You’ll construct a standing gas-sensing instrument with a 1.8-inch color TFT display, real-time clock-stamped SD logging, and a multivariate classification engine. The system reads all four MQ sensors in parallel, extracts feature vectors, and uses principal component analysis to distinguish methane, propane, carbon monoxide, and alcohol vapours—all on the Mega’s ATmega2560.
What You'll Learn
- Simultaneous analog acquisition from four MQ-series sensors with baseline correction
- Principal Component Analysis (PCA) implementation on Arduino for dimensionality reduction and gas signature separation
- Interfacing ST7735 TFT, DS3231 RTC, and SPI microSD for a self-contained data logger
- Prototype board soldering and noise management for sensitive analog front-ends
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | x1 |
| MQ-2 | x1 |
| MQ-7 | x1 |
| MQ-135 | x1 |
| MQ-4 | x1 |
| DS3231 RTC | x1 |
| MicroSD Module | x1 |
| 1.8in TFT ST7735 | x1 |
| 10kΩ Resistors | x15 |
| 100nF Caps | x15 |
| PCB Prototype Board | x2 |
| 9V Battery Snap | x1 |
| Soldering Iron | x1 |
| Solder Wire | x1 |
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
Built for B.Tech ECE/EEE/IoT students tackling final-year sensor projects, Smart India Hackathon teams prototyping environmental monitors, and ATL tinkering labs needing an advanced array demonstration. Ideal for IIT/NIT/VIT/BITS research groups wanting a low-cost chromatography proxy for gas classification experiments before moving to research-grade instruments.
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 code for the AI companion that guides you step-by-step; if you need human help, WhatsApp our support team for real-time troubleshooting.
Can this kit identify an unknown gas mixture?
Yes. Once you train the PCA model with known samples, the array can separate signatures and classify the presence of target gases in a mixture, though precise quantification may require additional calibration.
Is soldering experience required?
Yes, this is an advanced kit. You’ll solder the sensor array, filter components, and headers onto the prototype board using the included soldering iron and solder wire.
Can I log data for a college environmental study?
Absolutely. The microSD module timestamps every reading via the DS3231 RTC, so you can collect long-term gas sensor logs for analysis and correlate with environmental changes.
MQ-2, MQ-7, MQ-135, MQ-4 read simultaneously. Principal component analysis on Mega separates gas signatures.
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.
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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