ESP32 Home Assistant Native API Kit: Direct Sensor & Relay Control Without MQTT

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

In a single afternoon, you’ll assemble a Wi‑Fi sensor node that reports temperature and humidity from the DHT22, detects motion via the HC‑SR501 PIR, and controls any appliance through a 5V relay—all exposed as native Home Assistant entities without an MQTT broker. Whether you want to automate lights, monitor a room, or build a project for a hackathon, this kit gives you direct, cloud‑free integration with your smart home dashboard.

What You'll Build

A fully functional Home Assistant sensor node that creates entities for temperature, humidity, motion state, and a switch. You’ll instantly see live data on your HA dashboard and set up automations like turning on a fan when the temperature crosses a threshold—no YAML tinkering, just direct entity control from the ESP32.

What You'll Learn

• Write Arduino code to call the Home Assistant native API over HTTP, registering sensors and switches directly
• Read accurate temperature and humidity from a DHT22 sensor with proper timing and error handling
• Detect motion using a PIR sensor and send state updates to Home Assistant in real time
• Control a relay via a switch entity, enabling appliance automation and rule-based triggers

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Ideal for CBSE Class 11–12 students building IoT or computer science projects, B.Tech ECE/EEE learners exploring embedded systems, and participants in Smart India Hackathon or ATL Tinkering Labs who need a reliable, pre‑configured sensor node for Home Assistant integration. If you’ve ever wasted hours juggling parts from different suppliers, this single‑box solution from Compoden lets you focus on coding and automation, not logistics.

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.