Flood Alert Under Sink Kit — Build a Leak Detector 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.

A silent water leak under the kitchen sink can cause serious damage before you even notice. With this kit, you'll build a real flood alert system that sounds a buzzer and flashes red LEDs the instant a sensor detects moisture. It's a practical, home-saving project that teaches you how sensors and microcontrollers work together, and you'll complete it in a single afternoon.

What You'll Build

You'll assemble a working water leak alarm on a breadboard that can be placed under any sink. When water touches the sensor probe, the Arduino Uno triggers the active buzzer and lights up two bright LEDs—a clear warning anyone in the house can hear and see. You'll walk away with a finished device you can keep installed, plus a solid understanding of the circuit and code behind it.

What You'll Learn

• How a water sensor detects liquid by reading changes in conductivity
• Wiring push-pull outputs: driving a buzzer and LEDs from Arduino pins
• Breadboarding a complete circuit with resistors, wires, and power
• Writing and uploading Arduino code to read sensor input and control outputs

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is perfect for ATL Tinkering Lab students (Class 5-8) getting started with sensor projects, CBSE Class 11-12 students building a practical electronics portfolio, and first-year B.Tech ECE/EEE students who want a hands-on introduction to Arduino interfacing. No prior coding experience is needed—the step-by-step guide makes it easy for absolute beginners.

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.