Air Purifier Auto Trigger Kit with Arduino Uno + Sensor

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

This kit turns a standard air purifier into a smart, air-quality-aware appliance that starts automatically when PM2.5 levels cross a safe threshold, then switches off after clearing the air—no human intervention needed. Perfect for homes in Indian cities where outdoor AQI swings affect indoor air unpredictably. You’ll assemble a compact monitoring-and-control station with a crisp OLED display showing real-time particle count.

What You'll Build

You’ll build a desktop unit that reads PM2.5 and PM10 particulate concentration using the PMS5003 sensor, displays the values on an OLED screen, and toggles a 5V relay module that plugs directly into your air purifier’s power line. Once calibrated to your preferred AQI threshold (say, 150), the relay clicks on when pollution spikes and off when levels drop back below the threshold—effectively giving your air purifier a brain. The assembled unit can be enclosed in a 3D-printed case or kept on a breadboard for easy modifications.

What You'll Learn

• Interfacing the PMS5003 laser particle counter via UART and extracting PM2.5/PM10 data
• Controlling a 5V relay module with an Arduino digital pin to switch AC loads safely
• Displaying real-time sensor values on a 0.96-inch OLED using I2C communication
• Writing conditional logic to automate device activation based on environmental sensor inputs

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Ideal for CBSE Class 11–12 students crafting investigatory projects in environmental monitoring, B.Tech ECE/EEE undergraduates exploring IoT automation, and ATL Tinkering Lab members tackling Smart India Hackathon challenges. If you live in an Indian metro and want to reduce indoor pollution without manually flicking the purifier switch every hour, this kit makes the concept tangible.

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.