Clap Beat Detector Kit with Arduino Uno + Sensor
Clap Beat Detector & LED Rhythm Visualizer with Arduino Uno
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 every clap into a burst of light. This kit uses a KY-038 microphone to pick up the sharp onset of a clap, flashes a set of LEDs in perfect time, and calculates the beats per minute from the rhythm of your hands. It’s a hands-on introduction to audio signal detection and basic beat tracking, perfect for aspiring musicians and young makers.
What You'll Build
You’ll build a device that listens for claps and responds immediately with a synchronized LED pattern. Each clap triggers a flash, and after a series of claps, the Arduino measures the intervals to compute and display the BPM on the serial monitor. You’ll end up with a portable beat detector powered by a 9V battery that you can use to test your own rhythm or as a simple music visualizer.
What You'll Learn
- How to interface a KY-038 sound sensor with Arduino and read analog voltage levels
- Threshold-based signal detection to isolate clap sounds from background noise
- Timing and interval measurement using millis() to calculate beats per minute
- Controlling multiple LEDs in sequence for a rhythmic visual effect
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| KY-038 Sound Sensor | 1 |
| 5mm LED Assorted | 5 |
| 220Ω Resistors | 5 |
| 10kΩ Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| 9V Battery Snap | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This kit is ideal for CBSE students in Class 6–10 exploring sensor-based projects for science exhibitions, ATL Tinkering Lab members, and young hobbyists at home. It’s also a great starting point for B.Tech first-year students getting hands-on with Arduino, and for parents introducing electronics to a child in a structured, frustration-free way.
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.
What if I get stuck during the build?
Your AI build companion, accessed via QR code, walks you through every step. If you need a human, our team responds on WhatsApp within a few hours.
Do I need a computer to use the BPM feature?
Uploading the code requires any laptop with a USB port and the free Arduino IDE. Once uploaded, the kit runs standalone, showing BPM on the serial monitor if connected, but the LED flashes work independently.
What if my claps aren’t detected?
The KY-038 has a sensitivity trimmer that you can adjust with a small screwdriver. The AI companion guides you through tuning it for your environment.
Can I power this with a USB power bank instead of a 9V battery?
Yes, you can power the Arduino Uno directly via its USB port from any standard power bank or phone charger, making it convenient for showing the project anywhere.
KY-038 mic detects clap beats and flashes LEDs in rhythm. Calculates BPM from inter-clap timing.
What's in this kit
- Arduino Uno R3
- KY-038 Sound Sensor
- 5mm LED Assorted x5
- 220Ω Resistors x5
- 10kΩ Resistors x5
- 400-pt Breadboard
- M-M Wires x20
- 9V Battery Snap
Other projects you can build
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items