Arduino Vibration Sensor Kit: Build a Tap-Activated Alarm with Adjustable Sensitivity

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 a simple tap or shake into a flashing LED and a buzzing alarm - that's what you'll build with this kit. The SW-420 vibration sensor detects even gentle knocks, and you can fine-tune its sensitivity with the tiny onboard potentiometer. Whether for a door-knock alert or learning how sensors work, this project puts you in control from the very first connection.

What You'll Build

You'll place all components on the included breadboard, wire the SW-420 sensor to the Arduino Uno's digital input, and upload code that monitors vibrations. A firm tap or shake instantly activates the red LED and the buzzer, creating a real-time alarm system. With adjustable sensitivity, you can set it to ignore light touches or react to a gentle nudge.

What You'll Learn

• Reading a digital signal from a vibration sensor using Arduino
• Adjusting sensor sensitivity with an on-board potentiometer
• Controlling an LED and active buzzer through simple code
• Constructing a complete electronic circuit on a breadboard and powering it with a battery

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

From CBSE students in Class 5-12 exploring sensor technology to B.Tech first-year students working on practical embedded projects, this kit removes the friction of sourcing and debugging. It's equally at home in ATL Tinkering Labs, Smart India Hackathon prototyping sessions, or a parent-child maker afternoon. If you're curious about how everyday devices sense movement and trigger actions, you'll find your starting point here.

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.