Build a Tap-Sensitive Knock Counter & Tone Player with Arduino Uno - Piezo Knock Sensor Starter 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.

Tap the piezo disk and watch the LCD count each knock while a buzzer plays a tone for every detected hit. This project introduces you to real-world vibration sensing - the same principle behind knock sensors in automotive engines and tap-sensitive interfaces. Build your own interactive sensor circuit in under two hours, even if you've never touched an Arduino before.

What You'll Build

You'll assemble a working circuit that detects taps on a surface and displays the knock count in real time on a 16�2 LCD display. Each successful detection triggers a tone from the passive buzzer, giving instant audio feedback. The setup demonstrates core sensor integration and programming that you can later extend to home security, musical instruments, or interactive toys.

What You'll Learn

• How a piezo element converts mechanical vibration into electrical signals
• Reading analog sensor values with Arduino and setting detection thresholds
• Interfacing an I2C LCD to display data with only two wires
• Controlling a passive buzzer to generate alert sounds using PWM

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Ideal for students aged 10+ exploring electronics for school projects, ATL tinkering labs, or CBSE-aided STEM experiments. Parents and educators looking for a guided, safe introduction to Arduino without the hassle of part hunting will find this kit perfect. It's also suitable for B.Tech ECE/EEE beginners who need a hands-on sensor integration demo.

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.