Smart City PM2.5 Node Kit - ESP32 with BME680, PMS5003 & OLED AQI Cube

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

Imagine a 50x50x50mm cube that sits on a lamppost, sampling air every second, calculating AQI, and pushing data to the cloud over WiFi while also broadcasting to nearby phones over BLE. This kit lets you build that exact node - soldering the sensors, display, and power management onto a custom PCB, then uploading firmware that computes a composite AQI from PM2.5, CO2, and VOC. Designed for smart city deployments, hackathon prototypes, and advanced college projects, every component has been pre-tested as a system so you spend your hours building, not debugging.

What You'll Build

You'll assemble a fully functional environmental monitoring node in a compact ABS enclosure. After soldering the ESP32 Dev Board, BME680, MH-Z19B CO2 sensor, and PMS5003 particle sensor onto a prototype PCB and mounting the 0.96in OLED, you'll upload firmware that reads all parameters, computes AQI based on India's NAAQS breakpoints, displays it on the screen, and streams data over both BLE and WiFi simultaneously. The result: a deployable smart city sensor that fits in your palm and can be replicated for urban sensor networks.

What You'll Learn

• Integrating I2C, UART, and analog sensors on a single ESP32 without library conflicts.
• Developing dual-stack firmware: a BLE GATT service for local phone access and an MQTT client over WiFi for cloud telemetry.
• Soldering through-hole ICs, small-pitch sensor breakouts, and power modules on a compact PCB.
• Computing real-time Air Quality Index from PM2.5, CO2, and VOC data using CPCB standards.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

If you're a third-year B.Tech ECE student building a smart city prototype for Smart India Hackathon, an IIT/NIT/VIT/BITS researcher testing urban air quality, or an ATL mentor pushing advanced students beyond breadboarding, this kit removes every friction. You get a fully matched set of sensors, a pre-tested power chain, and an enclosure that makes the final result look polished. No hunting for compatible library versions or wrestling with UART voltage levels - just a 5-hour build with a clear outcome.

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.

Choose your assembly option:

• Soldering Kit - 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
• Breadboard Combo - 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.