Clap Switch Light Kit: Turn Any Light On/Off with Two Claps Using 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.

Imagine walking into your room and clapping twice to turn on the lamp—no remote, no voice assistant, just a simple double clap. This kit lets you build that exact automation project: a sound-triggered switch that controls any AC lamp or bulb. It's a perfect introduction to smart home prototyping, combining sensor input, microcontroller logic, and relay-driven output in one hands-on project.

What You'll Build

You'll assemble a circuit that listens for a double clap using a microphone sensor, processes the signal with an Arduino Uno, and toggles a 5V relay connected to a light bulb. The finished build can be placed in your bedroom, study table, or living area to switch lights without touching a switch. All connections are made on a breadboard, so no soldering is required.

What You'll Learn

• Interface a KY-038 sound sensor with Arduino to detect clap patterns.
• Program Arduino to distinguish a single clap from a double clap and ignore background noise.
• Control a high-voltage AC load safely using a relay module and flyback diode.
• Build and debug circuits on a breadboard, strengthening prototyping and logical thinking.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is ideal for young makers aged 8-15 taking their first steps into electronics and coding. Parents looking for screen-free STEM activities will find it engaging and educational. It's widely used in ATL Tinkering Labs and fits into CBSE Class 6-10 science and computer curricula, as well as hobbyist explorations of home automation. If you're preparing for a school exhibition or just want to add a wow-factor switch to your room, this kit delivers.

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.