Build Your Own Electricity Usage Monitor with Arduino Uno – See Appliance Cost in Real Time

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

Turn energy awareness into a hands-on project with this Electricity Usage Monitor Kit. You'll assemble a working device that clips magnetically around an appliance cord and calculates how much electricity that device uses—and what it costs you each day. No soldering, no high-voltage contact: just plug-and-play modules that teach real-world AC measurement.

What You'll Build

A compact current monitor that uses the ACS712 sensor to read the alternating current flowing to any small appliance (lamp, fan, charger, set-top box). The Arduino converts that reading into power consumption in watts, then multiplies by hours of use and your local electricity tariff to display an estimated daily cost in rupees on the 16x2 LCD. It's a personal energy auditor that gives you immediate feedback about which devices are secretly draining power.

What You'll Learn

• How to interface a Hall‑effect current sensor with an Arduino analog input
• Calculating RMS current from an AC waveform and deriving true power
• Driving a 16x2 character LCD through an I2C backpack for cleaner wiring
• Programming cost estimation logic by mapping sensor readings to per‑unit electricity rates

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is designed for CBSE Class 11–12 physics students exploring electrical measurement concepts, first‑semester B.Tech ECE/EEE project work, ATL Tinkering Lab innovators, and any young maker curious about how household energy bills are calculated. It also fits neatly into Smart India Hackathon prototypes that need real‑time energy dashboards.

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.