ESP32 Private MQTT Broker Kit with ESP32 + DHT22
Build a Private IoT Network with an ESP32 MQTT Broker – No Internet Required
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 self-contained sensor network where the ESP32 Development Board runs a lightweight uMQTT Broker, gathering temperature and humidity data from two DHT22 nodes. All publishing happens on a private local network, so your IoT system stays fully operational without any internet link—ideal for secure home automation, campus environmental monitoring, or hackathon prototypes that must run in isolated networks.
What You'll Build
A complete private MQTT ecosystem: the ESP32 acts as broker, two DHT22 sensors publish real-time readings to dedicated topics, and a 0.96-inch OLED displays live data. The included 4-channel relay module lets you trigger fans, lights, or alarms directly from topic payloads, all without a single data packet leaving your LAN.
What You'll Learn
- Configure an ESP32 as an MQTT broker using the uMQTT Broker library
- Publish and subscribe to sensor data topics within a local network
- Interface DHT22 sensors and extract accurate temperature/humidity values
- Control relays based on sensor thresholds via MQTT messages
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | x1 |
| DHT22 | x2 |
| 4-ch Relay Module | x1 |
| 0.96in OLED | x1 |
| 4.7kΩ Resistors | x5 |
| 100nF Caps | x10 |
| 400-pt Breadboard | x1 |
| M-M Wires | x20 |
| Micro USB Cable | x1 |
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
CBSE Class 11–12 students diving into IoT and networking will find a practical, curriculum-aligned project. B.Tech ECE/EEE undergraduates can deploy this at Smart India Hackathon or college tech fests. ATL Tinkering Lab mentors will value a completely offline network that teaches MQTT fundamentals without internet reliance. Even hobbyists exploring secure local automation will get a polished, expandable base.
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 chat with the AI build companion, which has step-by-step solutions for this project. If you prefer, message us on WhatsApp for a real engineer’s assistance.
Can I add more sensors or actuators?
Absolutely. The broker can handle multiple ESP32 publisher nodes; simply assign new topics. The breadboard and extra resistors let you prototype additional DHT22 or analog sensors easily.
Is an internet connection ever needed?
Not during normal operation. All MQTT traffic stays on your local Wi‑Fi network. You only need an internet connection once to download the Arduino code and libraries.
Does the kit require soldering?
No soldering is needed. All circuits are built on the 400‑point breadboard using the included male‑to‑male jumper wires and components.
ESP32 runs a lightweight MQTT broker (uMQTT Broker) on-device. All sensor nodes publish without internet.
What's in this kit
- ESP32 Dev Board
- DHT22 x2
- 4-ch Relay Module
- 0.96in OLED
- 4.7kΩ Resistors x5
- 100nF Caps x10
- 400-pt Breadboard
- M-M Wires x20
- Micro USB Cable
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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