Arduino-Powered Electromagnetic Induction Meter – See Invisible AC Magnetic Fields Around You

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 what the invisible field around a power cable looks like? This kit lets you build a working meter that detects the 50 Hz alternating magnetic field radiating from household AC lines. Using a coil antenna and an ACS712 current sensor module, the Arduino reads minute induced signals and displays the magnetic flux density in millitesla on a bright 16×2 LCD. Slip it near any appliance cord and watch the numbers climb – a vivid, hands-on proof of Faraday’s law.

What You'll Build

You’ll assemble a compact, battery-powered field detector on a breadboard. The coil antenna captures electromagnetic induction, the LM358 op-amp amplifies the tiny voltage, and the Arduino converts it to a readable mT value shown live on the LCD. Within three hours, you’ll have a take-home device that turns abstract classroom physics into a concrete, measurable gadget – perfect for a school science fair or a weekend parent-child project.

What You'll Learn

• How alternating current creates a changing magnetic field (Faraday’s law of induction)
• Using an LM358 op-amp to boost a weak sensor signal for Arduino analog input
• Interfacing a 16×2 LCD with I2C backpack for real‑time data display
• Reading a current sensor (ACS712) in a non‑standard way to detect induced coil current

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Tailor-made for CBSE Class 11–12 physics students exploring electromagnetic induction, and for ATL Tinkering Lab sessions where a quick, high-impact demo is needed. B.Tech ECE/EEE first-years at VIT, BITS, or NITs will also find it a solid introduction to sensor integration. Even a curious 10-year-old with a parent can follow the clear build instructions – no prior electronics experience required.

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.