Multi-Protocol Gateway Bridge Variant 22 Kit with ESP32 + DHT22
Bridge MQTT to HTTP REST API with the ESP32 Multi-Protocol Gateway Kit
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
You will build a functional gateway that listens for MQTT data from two DHT22 and one BMP280 sensor, transforms the nested JSON payloads, and serves them through a structured REST API. This kit targets a frequent real-world challenge—integrating modern IoT sensor networks with legacy monitoring dashboards and enterprise systems that only accept HTTP requests.
What You'll Build
By the end, you will have a fully soldered, enclosed prototype that ingests environmental data from multiple nodes, appends RTC timestamps, and exposes temperature, humidity, and pressure readings via simple HTTP GET endpoints. A 0.96-inch OLED displays system uptime and the last MQTT message, giving you a hardware demo ready for college project evaluations, hackathons, or industrial proof-of-concept presentations.
What You'll Learn
- Configure the ESP32 as a concurrent MQTT subscriber and HTTP server using FreeRTOS tasks
- Transform deeply nested JSON payloads between MQTT publish format and REST API response schema
- Integrate DS3231 RTC for accurate timestamping of sensor data records
- Design a stable regulated power stage with the LM2596 buck converter for industrial-grade reliability
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| DHT22 | 2 |
| BMP280 | 1 |
| DS3231 RTC | 1 |
| LM2596 Buck Converter | 1 |
| 0.96in OLED | 1 |
| 4.7kΩ 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
Designed for B.Tech ECE, EEE, and CSE students tackling IoT-focused capstone projects, Smart India Hackathon teams needing a quick-to-prototype middleware solution, and MTech candidates researching protocol translation. IIT, NIT, VIT, and BITS Hyderabad teams will find the pre-integrated hardware ideal for demonstrating enterprise IoT gateways without weeks of sourcing and wiring.
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 to chat with the AI companion trained on the Multi-Protocol Gateway project; it walks you through wiring and code. Message us on WhatsApp for direct engineer support if needed.
Can I add CoAP or WebSocket support to this gateway?
Yes, the ESP32 is fully capable. The companion provides modular code comments and snippets for extending the protocol stack—you adapt the JSON transformer accordingly.
Will this work with cloud platforms like ThingsBoard or AWS IoT?
Absolutely. The REST API can forward data to any HTTP endpoint, so you can push readings to cloud dashboards by changing the target URL in the configuration file.
How do I change the JSON structure for my legacy system?
The firmware includes a dedicated payload‑mapping file; edit the placeholder keys and nesting levels to match your target schema. The AI companion shows you exactly which lines to modify.
ESP32 bridges MQTT to HTTP REST API. Converts sensor payloads between JSON formats for legacy integration.
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