Smart Grid Communication Node Kit with ESP32 + Relay
ESP32 Smart Grid Communication Node Kit – Real-Time Demand Response via 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.
Build a fully functional smart grid communication node that listens to utility cloud signals and automatically sheds non-critical loads during peak demand events. This ESP32-based system demonstrates real-world demand response for grid flexibility. With all components pretested as a coordinated system, you skip the headache of cross-checking voltage levels, firmware libraries, and signal timing yourself.
What You'll Build
You will assemble a DIN-rail-mounted node that monitors energy consumption with PZEM-004T, logs data to microSD with RTC timestamps, displays load status on OLED, and communicates with a utility cloud via MQTT. When a demand flexibility signal arrives, the relay module disconnects prescheduled loads, recording the event precisely. You end up with a ready-to-demonstrate model perfect for smart grid projects, hackathons, or B.Tech final year submissions.
What You'll Learn
- Program ESP32 to subscribe to MQTT topics for utility demand response commands
- Calibrate PZEM-004T for accurate energy monitoring and log data with DS3231 RTC timestamps
- Implement load shedding logic based on real-time cloud signals using a 4-channel relay
- Design a compact, DIN-rail-mountable industrial prototype with LM2596 buck converter power management
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| PZEM-004T | 1 |
| 4-ch Relay Module | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| LM2596 Buck Converter | 1 |
| 0.96in OLED | 1 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| DIN Rail Enclosure | 1 |
| 12V 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
Ideal for B.Tech ECE/EEE students working on demand response or smart grid capstone projects. Perfect for Smart India Hackathon teams tackling energy management themes and ATL Tinkering Lab mentors exploring IoT-based utility communication. Also suits early-stage energy startups prototyping demand flexibility hardware.
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 and start a chat with the AI companion that has step-by-step knowledge of this kit. If you need human help, reach us on WhatsApp for direct support.
Can I interface this node with my own MQTT broker?
Yes, you can reconfigure the ESP32 to connect to any MQTT broker endpoint. The AI companion guides you through modifying the sketch with your credentials and topic structure.
Does the kit include the actual cloud service or just the hardware?
The kit provides hardware and preloaded code templates that connect to a public MQTT test broker. You can later adapt it to a private utility cloud or your own server.
Is this kit suitable for monitoring three-phase loads?
The included PZEM-004T measures single-phase AC. For three-phase, you would need additional sensors, but the load-shedding logic remains the same—the AI companion can suggest scaling strategies.
ESP32 exchanges demand flexibility signals via MQTT with utility cloud. Sheds loads on peak demand events.
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.
Other projects you can build
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