Arduino Meeting Room Ventilation Monitor Kit with CO2, Temperature, and Traffic Light LEDs

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Stuffy meeting rooms and closed classrooms hurt focus and health—this kit puts ventilation awareness directly on your table. Using a precision MH-Z19B CO₂ sensor, a DHT22 temperature/humidity sensor, and an Arduino Uno, you’ll build a compact monitor that lights up green when air quality is good, yellow when it’s time to open a window, and red when ventilation is urgently needed. The bright OLED screen shows real-time CO₂, temperature, and humidity, making it a practical tool for any shared space.

What You'll Build

You’ll assemble a self-contained indoor climate station on a breadboard, with traffic light LEDs that provide at-a-glance visual warnings. Place it on a meeting table or near the door—its colour logic instantly tells occupants whether to let fresh air in. The OLED cycles through CO₂ (in ppm), temperature (°C), and humidity (%), so you’re not just guessing room comfort; you’re measuring it.

What You'll Learn

• Calibrate and read the MH-Z19B NDIR CO₂ sensor via UART
• Interface the DHT22 temperature/humidity sensor with Arduino
• Drive a 0.96-inch OLED display using I²C to show live sensor data
• Code threshold-based traffic light logic—green for <1000 ppm, yellow for 1000–1500 ppm, red for >1500 ppm

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for CBSE Class 11–12 students building science projects, B.Tech ECE/EEE learners mastering sensor integration, ATL Tinkering Lab innovators, and Smart India Hackathon teams working on urban air quality. If you’ve ever sat in a stuffy meeting and wished for a visual cue to open a window, this kit turns that idea into a working device you built yourself.

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.