Classroom CO2 Monitor Kit v2
Classroom CO2 Monitor Kit v2: Build a Live IoT Ventilation Dashboard with Arduino, MQTT & Grafana
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
You walk into a classroom and the CO2 levels are spiking — students are drowsy, attention is drifting. With this kit, you'll build a compact monitor that streams real-time CO2, temperature, and humidity data to a professional Grafana dashboard, all running on a single board. It’s the same stack used in smart buildings, scaled for learning.
What You'll Build
You’ll assemble a standalone sensor device powered by Arduino UNO. It reads CO2, temperature, and humidity, then publishes the data via MQTT to a Docker container. The container runs a Mosquitto broker and Grafana, giving you live graphs accessible from any browser on the same network. The result is a functional air quality monitoring system you can deploy in a school or lab.
What You'll Learn
- Interfacing digital sensors (DHT22, BMP280, MH-Z19B) with Arduino over I2C and UART
- Setting up and configuring MQTT communication between a microcontroller and a Linux host
- Running Docker containers to host Mosquitto broker and Grafana on the same device
- Designing a real-time dashboard with data visualization and alerting logic
Kit Contents
| Component | Quantity |
|---|---|
| Arduino UNO Q | 1 |
| DHT22 | 2 |
| BMP280 | 1 |
| MH-Z19B CO2 | 1 |
| LM2596 Buck Converter | 1 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| Enclosure Box | 1 |
| 5V 3A PSU | 1 |
| USB-C Hub | 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
Ideal for B.Tech ECE/EEE students building IoT projects for Smart India Hackathon or final year submissions. Also suitable for ATL Tinkering Lab instructors who want to demonstrate full-stack sensor systems to CBSE Class 11–12 students. If you’re a hobbyist teaching yourself Docker, MQTT, and Arduino integration, this kit provides the hardware and guidance to do it in one weekend.
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?
The AI companion walks you through every wiring step and software configuration. You can also send a photo on WhatsApp and get help within hours.
Do I need prior experience with Docker or MQTT?
Not at all. The companion guides you from installing Docker to launching the Grafana dashboard, explaining each concept as you go.
What if I don't have a Linux machine?
You can run Docker on Windows, macOS, or Linux — all instructions are included. A Raspberry Pi also works perfectly.
Can this device be permanently installed in a classroom?
Yes. The enclosure, 5V PSU, and stable MQTT pipeline allow continuous 24/7 monitoring. You can even expand it with additional sensor nodes later.
School Ventilation — Docker on Linux runs Mosquitto MQTT + Grafana. STM32 sketch publishes sensor data. Full stack on one board.
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