EM Field Meter Kit: Detect AC Magnetic Fields with Arduino Uno & Hall Effect Sensor

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

Power lines, transformers, and even household appliances radiate invisible AC magnetic fields that most people never measure. This kit turns an Arduino Uno, a precise Hall effect sensor, and an ACS712 current sensor into a handheld meter that instantly displays magnetic flux density in millitesla on a sharp OLED screen. Take it near an electrical panel or under high-tension cables and watch the numbers spike - a tangible way to understand electromagnetic interference that's usually confined to textbooks.

What You'll Build

A battery-operated field strength meter that maps AC electromagnetic fields in real time. You'll calibrate the sensor using the included ACS712, then walk through any environment to log baseline and peak mT readings on the crisp 0.96-inch OLED. Ideal for CBSE physics experiments, EMF awareness campaigns, or Smart India Hackathon prototypes that need environmental sensing.

What You'll Learn

• Interfacing the A3144 Hall effect sensor and ACS712 current sensor with Arduino Uno to capture analog field data
• Converting raw ADC readings into magnetic flux density (millitesla) using calibrated transfer functions
• Driving a 0.96-inch I2C OLED display to show live measurements and min/max values
• Practical EMC awareness - identifying common sources of AC magnetic interference around homes and campuses

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Tailored for CBSE Class 11-12 learners tackling electromagnetism and sensor-based practicals, B.Tech ECE/EEE students delving into EMI/EMC design, Smart India Hackathon participants building environmental monitoring solutions, and ATL Tinkering Lab innovators ready to move beyond simple LED circuits. If you're at IIT, NIT, VIT, or BITS Pilani, this kit bridges lab theory with a field-ready prototype you can demonstrate in a project review.

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.