Lab Gas Monitor Kit
Build a Wireless Lab Gas Monitor with Dual ESP8266 Nodes & Node-RED Dashboard
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
For advanced STEM labs, university projects, and IoT hackathons, this kit lets you deploy two wireless sensor nodes that measure combustible gas, temperature, humidity, and atmospheric pressure — all displayed on a real-time Node-RED dashboard with historical charts. Built around dual ESP8266 microcontrollers, the system publishes sensor data to an MQTT broker, giving you a professional-grade lab safety monitoring network that mirrors industrial IoT deployments.
What You'll Build
You'll create a complete lab monitoring network: two ESP8266-based sensor nodes, each with its own OLED display, publishing to a common MQTT broker. A Node-RED flow on your laptop subscribes to the data and renders live gauges and time-series graphs for gas concentration (MQ‑2), temperature & humidity (DHT22), and atmospheric pressure (BMP280). The dashboard logs historical values so you can analyse trends over hours or days. Perfect for demonstrating IoT concepts, lab safety compliance, or a Smart India Hackathon prototype.
What You'll Learn
- Configuring ESP8266 for Wi‑Fi and MQTT communication with publish/subscribe patterns
- Integrating multiple I2C sensors (DHT22, BMP280) and an analog gas sensor (MQ‑2) on one node
- Designing Node‑RED dashboards with live gauges, line charts, and programmable alarm thresholds
- Building a reliable dual‑node IoT system with buck converter power management and data logging
Kit Contents
| Component | Quantity |
|---|---|
| ESP8266 NodeMCU | 2 |
| DHT22 | 2 |
| BMP280 | 1 |
| MQ-2 | 1 |
| 0.96in OLED | 2 |
| LM2596 Buck Converter | 1 |
| 10kΩ Resistors | 10 |
| 4.7kΩ Resistors | 10 |
| 100nF Caps | 10 |
| 100µF 16V Caps | 5 |
| PCB Prototype Board | 2 |
| 830-pt Breadboard | 1 |
| M-M Wires | 30 |
| Micro USB Cable | 2 |
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
Ideal for B.Tech ECE and EEE students building IoT lab safety projects, Smart India Hackathon teams needing a ready‑to‑demo prototype, and ATL tinkering lab mentors guiding advanced student projects. Also suits IIT/NIT/VIT/BITS students preparing for campus contests or research, and any hobbyist who wants to master MQTT, Node‑RED, and multi‑sensor wireless networking with the exact components used in real industrial monitoring.
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?
Use the QR‑coded AI companion for immediate, context‑aware help, or message us on WhatsApp. We’ll unblock you quickly with specific troubleshooting steps.
Can I use this kit with a different MQTT broker like AWS IoT?
Yes. The companion shows how to replace the default broker (test.mosquitto.org) with any broker, including AWS IoT, HiveMQ, or a local Mosquitto installation on your laptop.
Is this kit suitable for a Smart India Hackathon where build time is limited?
Absolutely. All parts are pre-tested to work together, and the AI guide provides a speed‑run path so you can have a working dashboard in under 3 hours, leaving time to polish your presentation.
What software do I need on my laptop?
You’ll install Node‑RED and optionally a local MQTT broker (Mosquitto). The companion includes one‑click setup scripts for Windows, macOS, and Ubuntu. No prior coding needed beyond basic Arduino IDE configuration.
Lab Safety — Two ESP8266 nodes publish to MQTT broker. Node-RED on laptop shows live dashboard with historical charts.
What's in this kit
- ESP8266 NodeMCU x2
- DHT22 x2
- BMP280
- MQ-2
- 0.96in OLED x2
- LM2596 Buck Converter
- 10kΩ Resistors x10
- 4.7kΩ Resistors x10
- 100nF Caps x10
- 100µF 16V Caps x5
- PCB Prototype Board x2
- 830-pt Breadboard
- M-M Wires x30
- Micro USB Cable x2
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