Air Quality Monitoring Kit

Overview

This DIY project builds an air-quality monitor. An Arduino Nano reads an MQ-2 gas sensor (smoke, LPG, butane, hydrogen) and displays live readings on an OLED.

How It Works

1. The MQ-2 sensor changes its output depending on the concentration of combustible gas and smoke.
2. The Arduino Nano reads this analog signal.
3. The value is shown on the OLED display so you can see air quality change in real time.

Complete Parts List

You Will Also Need

A USB-A to USB-C cable to connect the Arduino Nano C-Type to your computer and upload code — not included in this kit.

Applications

• Kitchen gas leak awareness - spot LPG or smoke early
• Workshop air monitoring - track fumes
• Sensor learning - work with analog gas sensors

Full Build Guide

Step-by-step instructions and code for this exact project are on Project Hub.

FAQ

Do I need coding experience? No prior experience is required - this kit is built around one specific project, and the full code is freely available. See the build guide above.

What tools do I need beyond what's included? A computer with the free Arduino IDE (or ESP8266 board support, where applicable) installed to upload the code. No soldering is required for this build. You'll also need a USB-A to USB-C cable to connect the board — not included.

Can I reuse the parts afterward? Yes - every component in this kit is a standard, reusable part you can use in future projects, not a single-use kit.