Whole-Home Power Management System Kit with ESP32 + Relay
ESP32 Whole-Home Power Management Kit with Auto Load Shedding – Save Energy, Prevent Overloads
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
In Indian homes, unscheduled power cuts, voltage swings, and rising electricity bills make energy management a real challenge. With this kit, you will build a comprehensive three-phase power monitoring and control system that keeps a watchful eye on every ampere entering your home. It logs consumption data, pushes live readings to your phone via MQTT, and can automatically shed non-essential loads—like geysers or air conditioners—before your main breaker trips, giving you peace of mind and lower bills.
What You'll Build
You will assemble a self-contained unit that clamps ACS712 Hall-effect sensors around your three-phase incoming lines, measures true power and energy with the PZEM-004T module, and displays everything on a crisp OLED screen. Data is stored on a microSD card and forwarded to any MQTT broker—Home Assistant, Node-RED, or our recommended dashboard. The 4-channel relay board lets you program load shedding rules: if total current crosses a set threshold, the least critical appliances turn off first, keeping essentials running and preventing dangerous overloads.
What You'll Learn
- Three-phase AC current sensing using ACS712 Hall-effect modules with proper calibration and noise filtering
- Real-time energy metering via the PZEM-004T and logging to a microSD card with time stamps from the DS3231 RTC
- MQTT communication on the ESP32—publishing sensor data and subscribing to control commands from any IoT platform
- Designing intelligent load-shedding algorithms that prioritize circuits based on predefined rules, a critical skill for home energy automation
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| PZEM-004T Energy Meter | 1 |
| ACS712 30A | 3 |
| 4-ch Relay Module | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| LM2596 Buck Converter | 1 |
| 1000µF 25V Capacitors | 4 |
| 100nF Capacitors | 15 |
| 10kΩ Resistors | 10 |
| PCB Prototype Board | 3 |
| Enclosure Box | 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 built for homeowners with a technical bent, B.Tech ECE/EEE students working on final-year energy management projects, and professionals prototyping solutions for Smart India Hackathon or home automation startups. If you attend a tinkering lab in an IIT, NIT, VIT, or BITS campus and want a serious IoT power monitor, this kit delivers. It assumes basic soldering and familiarity with Arduino IDE, but the AI companion fills in every gap.
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 start a session with our AI companion that has been fine‑tuned on this kit’s wiring and code. You can also send photos and questions via WhatsApp for rapid human support.
Can I adapt this for a single‑phase home?
Absolutely. The kit includes three ACS712 sensors for three‑phase monitoring, but you can use just one sensor and ignore the other two channels. The provided code and documentation cover single‑phase setup as a first step.
Will it work with my existing Home Assistant or Node‑RED setup?
Yes, the ESP32 publishes sensor data via MQTT, a protocol native to both platforms. We include a working dashboard configuration and instructions to connect within minutes.
What safety measures are included in the design?
All current sensing uses non‑contact Hall‑effect sensors, and the relay board is optoisolated. The enclosure provides IP20 protection, and the build guide stresses safe practices for working near AC mains—always turn off the main breaker before wiring and consult a licensed electrician if in doubt.
Three-phase ACS712 monitoring + PZEM-004T energy meter + ESP32 MQTT integration with auto load shedding relay.
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