Air Quality Science Fair Monitor Kit with Arduino Uno + Sensor
Air Quality Science Fair Monitor Kit — Demonstrate Indoor vs Outdoor Pollution with Arduino Uno
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Turn your science fair table into a live environmental lab. This Arduino Uno kit lets you build a portable monitor that compares indoor and outdoor air quality right in front of the judges, using a real gas sensor and a crisp OLED display. No soldering, no guesswork — just plug, upload, and start measuring.
What You'll Build
You will assemble a handheld air quality meter that instantly shows readings on its bright OLED screen. Walk it from the classroom to the playground and watch the numbers change — proving in an instant that indoor air often traps pollutants like VOCs and smoke while outdoor air stays fresher. Your science fair exhibit will have live, visual data instead of just a poster.
What You'll Learn
- How to read and interpret analog sensor signals from the MQ-135 gas sensor
- How to wire a sensor, display, and microcontroller on a breadboard without tools
- How to modify Arduino code to calibrate thresholds for clean and polluted air
- How to present live environmental data in a clear, visually compelling way for science fair judges
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| MQ-135 Gas Sensor | 1 |
| 0.96in OLED | 1 |
| 10kΩ Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M 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
Made for school students in CBSE Class 5–10 crafting an award-winning science project, ATL Tinkering Lab members who need a ready-made sensor station, and young innovators preparing for inter-school exhibitions. If the phrase “indoor versus outdoor air pollution” is part of your project theme, this kit puts a working prototype in your hands ahead of the deadline.
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 on your kit box to instantly start a chat with your AI build companion, which knows every wire and line of code for this air quality monitor. If you still need help, message us on WhatsApp and a human will step in.
How do I show indoor vs outdoor air quality differences to the judges?
The MQ-135 reacts quickly to pollutants. Indoors, bring the sensor near an incense stick or a candle — the OLED reading spikes. Outdoors, the number stays low. The visual contrast on the display says more than any chart on a poster board.
Do I need programming experience to make this work?
No. The kit comes with pre-written Arduino code that you upload with a few clicks. The guide explains every line so you can tweak sensitivity levels and still understand what the code does, even as a beginner.
Can I power the monitor with a USB power bank instead of a 9V battery?
Yes, you can connect a standard USB power bank to the Arduino Uno’s USB port for longer demos. The included 9V battery snap gives you an alternative for pure portability when you’re moving between locations.
MQ-135 shows indoor vs outdoor air quality differences. Perfect science exhibit with OLED display.
What's in this kit
- Arduino Uno R3
- MQ-135 Gas Sensor
- 0.96in OLED
- 10kΩ Resistors x5
- 400-pt Breadboard
- M-M 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