Build an Office Occupancy Tracker with 8-Zone ESP32 Relay Control and Node-RED Dashboard

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

This advanced kit transforms a standard office floor into an intelligently managed workspace. You'll assemble a multi-sensor network that tracks real-time occupancy (motion, temperature, humidity, and ambient light), then commands an eight-channel relay board to automate lighting, HVAC, or desk power. All data streams into a Node-RED dashboard for live monitoring and historical analysis, while over-the-air firmware updates let you tweak logic without ever opening the enclosure again.

What You'll Build

You'll create a self-contained control box that reads PIR motion sensors, DHT22 climate nodes, and a BH1750 light sensor across multiple zones. The ESP32 interprets occupancy patterns and triggers relays accordingly-turning off lights when a corner goes idle, adjusting fan speed based on temperature gradients, or logging ambient light to optimize desk allocation. The DS3231 real-time clock timestamps every event to a microSD card, and the OLED shows live zone status at a glance.

What You'll Learn

• Integrate six sensor types onto a single ESP32 and handle concurrent I�C, one-wire, and digital inputs
• Design Node-RED flows that visualize occupancy, store sensor logs, and send relay commands via MQTT
• Implement OTA firmware updates so you can modify relay logic or add new sensors remotely
• Size a buck converter and flyback diodes to safely drive inductive loads from a 5V supply

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Designed for final-year B.Tech ECE/EEE students, Smart India Hackathon participants, and IoT club members at IITs, NITs, VIT, and BITS Pilani. If you already know your way around an ESP32 and want a real-world automation project that generates meaningful sensor datasets, you'll hit the ground running. Prior experience with Node-RED is helpful but not mandatory-the AI companion covers the dashboard setup from scratch.

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.