Auto Light Energy Saver Kit with ESP32 + DHT22 — Master Home Automation and Cut Energy Waste

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

Create a real-world energy-saving system that automatically controls lights based on room occupancy and ambient temperature. Using the ESP32's native Wi-Fi, you'll expose a temperature sensor, motion detector, and relay switch directly to Home Assistant — no extra hubs needed. This kit gives you the exact hardware and guidance to build a project that can reduce electricity bills in any home or school.

What You'll Build

You'll assemble a smart energy saver that turns off lights when no motion is detected and adjusts lighting based on temperature readings. The finished project integrates seamlessly with Home Assistant, enabling you to create automations like turning off all lights when the room is empty for 10 minutes, or dimming lights as the temperature rises. It's a practical, scalable solution for home or classroom energy management.

What You'll Learn

• Program ESP32 to read DHT22 temperature and humidity data accurately
• Interface HC-SR501 PIR motion sensor with interrupt logic for real-time responses
• Control a 5V relay to switch AC/DC loads safely with optocoupler isolation
• Expose sensor and switch entities to Home Assistant using the native ESPHome API

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This intermediate kit is ideal for CBSE Class 11-12 students exploring IoT and automation, B.Tech ECE/EEE 1st-year students building their first Home Assistant project, and ATL Tinkering Lab mentors facilitating energy-saving hackathons. If you're preparing for Smart India Hackathon or want a practical project for your college mini-project, this kit provides a real-world automation system that can be extended.

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.