ESP32 Full Smart Home Hub Kit with ESP32 + Relay
ESP32 Full Smart Home Hub Kit: Node-RED Control of 8 Relay Zones and Auto-Logging
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 hub on your workbench that silently controls eight appliance zones, senses temperature, humidity, and motion across three rooms, and logs everything to an SD card — all managed from a single web dashboard you built. This kit brings that vision to life. Whether you're optimizing energy usage in a university hostel or automating a home office, you'll assemble and program a fully enclosed smart home controller with professional features right down to wireless firmware updates.
What You'll Build
A finished, boxed hub that connects to your Wi-Fi and lets you switch lights and fans via relay, view real-time sensor data on an OLED display, and control everything through a Node-RED dashboard. The system logs temperature, humidity, light levels, and motion events with timestamps onto a MicroSD card, and you can push new code over the air (OTA) without ever opening the enclosure again.
What You'll Learn
- Designing and wiring a multi-zone relay control circuit with flyback diode protection for eight independent AC/DC loads
- Creating an interactive Node-RED dashboard with gauges, switches, and charts that communicate with ESP32 over MQTT
- Implementing OTA firmware updates using ArduinoOTA library so you can deploy code changes remotely
- Integrating multiple I2C and digital sensors (DHT22, BH1750, PIR, DS3231) and logging structured CSV data to a MicroSD card module
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| 4-ch Relay Module | 2 |
| DHT22 | 3 |
| HC-SR501 PIR | 3 |
| BH1750 | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| LM2596 Buck Converter | 1 |
| 0.96in OLED | 1 |
| 1N4007 Diode | 10 |
| 4.7kΩ Resistors | 10 |
| 100nF Caps | 15 |
| PCB Prototype Board | 3 |
| Enclosure Box | 1 |
| 5V 3A 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 is engineered for final-year B.Tech ECE/EEE students, Smart India Hackathon participants, and advanced makers at IITs, NITs, VIT, and BITS Pilani who need a production-grade smart home demonstration. It's also ideal for embedded systems interns and serious DIY home automation builders who are comfortable with soldering, networking, and coding.
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?
The AI companion walks you through every wiring, code, and Node-RED configuration step. If you need human help, our WhatsApp support team is a message away.
Can I control the relays from my smartphone?
Yes. The Node-RED dashboard is a web page accessible from any device on the same Wi-Fi network. With basic router port forwarding or a VPN, you can even access it remotely.
Does the kit include a soldering iron?
Absolutely. A 25W soldering iron and solder wire are included so you have everything needed to assemble the prototype boards and secure connections inside the enclosure.
How do I perform OTA updates without opening the enclosure?
The companion project code comes with ArduinoOTA pre-configured. Once your hub is online, you push new firmware from the Arduino IDE over Wi-Fi in seconds.
ESP32 controls 8 relay zones from Node-RED. All sensors auto-logged. OTA updates enabled.
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.
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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