School AQI Monitor - Arduino PM2.5 & CO2 Kit
School Air Quality Monitor - Arduino PM2.5, CO2 & AQI Traffic Light on TFT
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Transform a dusty classroom into a data-driven breathing space. This kit merges PMS5003 particulate readings with MQ-135 gas and MH-Z19B CO2 data to calculate a real-time AQI score, then lights up a TFT screen like a traffic signal - green, yellow, or red - with clear recommendations. No more guessing when the air turns stale.
What You'll Build
You'll assemble a monitor that speaks the language of your school environment. The TFT display shows an AQI number and color-coded advice ("Open windows" or "Wear masks"), powered by fused sensor data. The final device sits on your bench or lab wall, silently tracking pollutants from chalk dust, lab fumes, or crowded periods, giving you evidence to lobby for better ventilation.
What You'll Learn
- Calibrate and read laser-scattering PM2.5 data from a PMS5003 sensor
- Combine MQ-135 analog outputs and MH-Z19B CO2 readings into a weighted AQI algorithm
- Drive a 1.8-inch TFT ST7735 display to render color-coded traffic light graphics
- Debug serial data flow and fuse multiple sensor inputs in Arduino C++
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| PMS5003 Particle Sensor | 1 |
| MQ-135 Gas Sensor | 1 |
| MH-Z19B CO2 | 1 |
| 1.8in TFT ST7735 | 1 |
| 10k? Resistors | 5 |
| 100nF Caps | 10 |
| 400-pt Breadboard | 1 |
| M-F Wires | 20 |
| 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
Designed for CBSE Class 11-12 physics and computer science practicals, ATL Tinkering Lab innovators, and B.Tech ECE/EEE students tackling Smart India Hackathon environmental themes. If you're a teacher wanting a live dashboard for your school's air quality or a student preparing for science fairs, this kit hands you a working prototype with real-world impact.
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 to launch the AI companion trained on this kit; it walks you through wiring, code upload, and sensor calibration. You can also reach our team on WhatsApp for a same-day response.
Can I log data for historical analysis?
Yes, the Arduino Uno serial output can be captured via any serial monitor. We include instructions to pipe data into a CSV file, and advanced users can add an SD card module (not included) for offline logging.
Does this kit require soldering?
No soldering needed - every connection uses the breadboard and jumper wires. The sensors and display come with pre-soldered header pins or can be plugged directly.
How accurate is the AQI score?
The AQI combines PM2.5, CO2, and VOCs using standard breakpoints. It's designed for educational and indicative monitoring, not regulatory compliance. You can fine-tune thresholds in the code to match local conditions.
School Air - PMS5003 PM2.5 + MQ-135 + CO2 combined into AQI score. TFT shows traffic light and recommendation.
What's in this kit
- Arduino Uno R3
- PMS5003 Particle Sensor
- MQ-135 Gas Sensor
- MH-Z19B CO2
- 1.8in TFT ST7735
- 10k? Resistors x5
- 100nF Caps x10
- 400-pt Breadboard
- M-F Wires x20
- 9V Battery Snap
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