Clap Echo Reverb Box Kit with Arduino Uno – Record, Delay, and Play Sound

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

Clap your hands and hear it echo back through a speaker — a pocket-sized noise maker that records a sound to memory and replays it with a customizable delay. You can adjust the echo from a single repeat to a rhythmic cascade, turning a simple clap into a sci-fi sound effect. Perfect for imaginative play, science fair demonstrations, or just for fun.

With this kit, you’ll assemble a real-time audio sampler on a breadboard. The MAX4466 microphone captures your clap, the Arduino stores the waveform in its internal SRAM, and the PAM8403 amplifier drives a 3W speaker to play it back after a programmable interval. The result is a classic echo effect — you clap once, and the box answers with a fading repeat. No soldering needed, and everything plugs into the included 400-point breadboard.

What You'll Build

You’ll build a clap echo reverb box that responds to sound with a delayed copy. Once assembled, you can adjust the delay time and number of repeats through simple code modifications. The device sits on your desk or in your palm, turning any room into a mini echo chamber. It’s an engaging way to understand how sound can be captured digitally and manipulated in real time.

What You'll Learn

• How to interface an analog microphone module with Arduino analog input and read sound levels
• How to store sampled audio data into SRAM buffers and control playback timing manually
• How to drive a small speaker through a Class D amplifier chip (PAM8403) for clear sound output
• How to modify delay parameters in code to create single echo, multiple echoes, or reverb-like effects

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is perfect for young tinkerers aged 10–15 exploring the intersection of sound and electronics, and for parents looking for a productive weekend activity. It also fits CBSE Class 11–12 hobby projects and ATL Tinkering Lab modules that introduce signal processing concepts without complex circuitry. Even B.Tech ECE students can use it to quickly prototype a simple audio delay effect for demonstration or further experimentation.

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.