Build a Real-Time Electricity Usage Monitor with Arduino Uno – Smart Meter Pulse Counter 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.

Ever wondered exactly how much electricity your household appliances consume? With this kit, you’ll mount an optical sensor over your utility meter’s LED pulse, count each flash with an Arduino Uno, and log precise kilowatt-hours to a microSD card—while a bright OLED screen shows real-time consumption. This project transforms a simple blinking LED into a full-fledged energy audit tool, perfect for school science fairs, engineering projects, or just satisfying your curiosity about where the power goes.

What You'll Build

You’ll assemble a non-invasive clip‑on sensor that reads the blinking LED on any standard digital meter. The Arduino converts pulses into energy units using the meter’s pulse‑per‑kWh constant, timestamping every reading with a DS3231 real‑time clock. The OLED displays instant wattage, daily totals, and cumulative usage—making it easy to track consumption patterns and identify energy hogs. A microSD module stores all data as a CSV file, ready for graphing in any spreadsheet or the included Python script.

What You'll Learn

• How utility meters encode energy data as light pulses and calibrate pulse‑per‑kWh constants
• Wiring an optocoupler to safely isolate the Arduino from the meter circuit without any electrical contact
• Programming the Arduino to count interrupts, calculate time‑updated kWh, and manage an SD card file system
• Using the DS3231 RTC for accurate timestamping and the OLED for live visualization

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Ideal for CBSE Class 11‑12 students exploring physics experiments on energy and electronics, B.Tech first‑year ECE/EEE students building energy monitoring projects, and ATL Tinkering Labs running data‑logging workshops. If you’re participating in Smart India Hackathon energy themes, this kit gives you a ready sensor suite and data pipeline—all on a single breadboard.

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.