Rank Your Home’s Energy Hogs: ESP8266 Energy Audit Kit with Triple PZEM-004T Sensors

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Most homes lose over 10% of their monthly electricity bill to phantom loads and inefficient appliances — but guessing which appliance is the culprit wastes time and money. This kit turns three standard outlets into precision energy meters that log every watt-hour for a full week, then the ESP8266 crunches the data into a ranked consumption report you can act on. By the end of the build, you’ll have a functional energy audit tool capable of revealing exactly where your electricity goes, down to the individual appliance.

What You'll Build

A belt-grade energy auditing system: three clamp-free power monitors connect via PZEM-004T modules to measure true RMS voltage, current, active power, and cumulative kWh. The ESP8266 reads all three sensors simultaneously, timestamps data with a DS3231 real-time clock, and stores weeks’ worth of readings on a microSD card. An OLED display shows real-time consumption and daily totals, while the generated report ranks devices from highest to lowest energy use — perfect for preparing a professional audit or just slashing your own bills.

What You'll Learn

• Interfacing PZEM-004T energy monitoring ICs over Modbus RTU with ESP8266
• Multi-channel data logging with microSD cards using FAT32 libraries
• Implementing a real-time clock (RTC) for accurate timestamped energy records
• Building a ranked consumption report algorithm and rendering on an OLED screen

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

B.Tech EEE/ECE students working on energy monitoring capstone projects will find this kit a turnkey start — the triple-channel logging and report generation match typical IEEE paper requirements. It’s also built for Smart India Hackathon participants tackling energy efficiency themes and for ATL Tinkering Lab mentors guiding advanced students toward real-world IoT applications. If you’re at IIT, NIT, VIT, BITS, or any engineering college, this kit gives you a professional-grade audit tool without the usual parts-hunting headache.

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.

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.