ESP32 Home Assistant Integration Variant 21 Kit with ESP32 + DHT22
ESP32 Home Assistant Integration Kit – Eliminate MQTT with Native API
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Build a local smart monitoring node that reports temperature, motion, and switches a 4-channel relay directly into Home Assistant—no cloud, no MQTT broker. This advanced kit walks you through flashing ESP32 firmware with the native API component, wiring every sensor and actuator on a prototyping PCB, and enclosing the finished board in a compact box. By the end, you own a production-grade IoT node that integrates seamlessly into your home automation without relying on external messaging services.
What You'll Build
A dedicated ESP32 sensor and actuator node that appears as temperature, humidity, motion binary sensor, and four switch entities in your Home Assistant dashboard, updating in real-time. The onboard 0.96in OLED displays local readings and relay states, while the entire assembly fits in a durable enclosure suitable for wall mounting in a living room, lab, or maker space.
What You'll Learn
- Flashing an ESP32 with ESPHome firmware and configuring the native API component to talk directly to Home Assistant without MQTT
- Wiring and calibrating a DHT22 temperature/humidity sensor for reliable environmental monitoring
- Interfacing an HC-SR501 PIR motion sensor and mapping it as a binary_sensor entity for automation triggers
- Controlling AC or DC appliances safely through a 4-channel relay module, including flyback diode protection and proper power regulation
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| DHT22 | 1 |
| HC-SR501 PIR | 1 |
| 4-ch Relay Module | 1 |
| LM2596 Buck Converter | 1 |
| 0.96in OLED | 1 |
| 1N4007 Diode | 5 |
| 10kΩ Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| Enclosure Box | 1 |
| 5V 2A PSU | 1 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This kit targets advanced hobbyists and engineering students taking on IoT challenges—B.Tech ECE/EEE final-year projects, Smart India Hackathon teams prototyping smart campus solutions, or makers at IIT, NIT, VIT, and BITS innovation centres. It also suits CBSE Class 12 students exploring advanced automation in ATL Tinkering Labs under mentor guidance, providing hands-on experience with direct Home Assistant integration.
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.
What if I get stuck during the build?
Scan the QR code inside the box to launch the AI companion; it provides step-by-step debugging specific to this circuit and firmware. You can also drop a message on WhatsApp for human backup.
Is prior Home Assistant experience required?
Familiarity with Home Assistant’s YAML configuration and ESPHome basics makes the build smoother, but the AI companion walks beginners through every line of code and wiring connection.
Can I modify the firmware to add more sensors?
Yes, the two prototyping boards let you expand the node with I2C or analog sensors. The AI companion includes notes on adding a BH1750 light sensor or MQ-135 gas sensor to the same ESP32 without conflict.
How do I power the node reliably for 24/7 operation?
The included 5V 2A PSU and LM2596 buck converter deliver clean, stable power to the ESP32 and relay module. The 1N4007 diodes provide reverse polarity and flyback protection for long-term durability.
ESP32 native Home Assistant API exposes temperature, relay, and motion as entities without MQTT broker.
What's in this kit
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.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items