Build a 1Hz–1MHz Frequency Counter with Arduino Uno – Pre-Tested 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.

Imagine measuring the exact frequency of a signal from your oscillator, function generator, or even a microphone preamp circuit. With this kit, you’ll build a professional-grade frequency counter that reads from 1 Hz up to 1 MHz and displays the result in Hz, kHz, or MHz automatically. It’s the perfect first step into the world of electronic test instruments—no bulky bench equipment needed.

What You'll Build

A fully functional frequency counter that uses Arduino’s hardware interrupts to count pulses, a Schmitt trigger to clean up noisy signals, and an I2C LCD for clear readout. Plug in any square or sine wave within 1Hz–1MHz, and the display instantly shows the frequency, switching units for easy reading. This is not just a blink LED project—it’s a real instrument you can use to debug circuits, calibrate timers, and explore signal processing.

What You'll Learn

• Using hardware interrupts to measure pulse timing with microsecond precision.
• Conditioning real-world signals using a 74HC14 Schmitt trigger to remove noise.
• Interfacing a 16x2 LCD via I2C to display dynamic measurements.
• Writing code that auto-ranges readings and formats units (Hz, kHz, MHz) intelligently.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is ideal for CBSE Class 9–12 students exploring electronics, B.Tech ECE/EEE undergraduates building test tools, and hobbyists attending Smart India Hackathon or tinkering at ATL labs. Even a 12-year-old with basic Arduino experience can follow the AI-guided steps—no oscilloscope needed to test your own oscillator circuits. It’s also perfect for first-year engineering students who need a frequency counter for labs but can’t afford bench equipment.

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.