Build Your Own Flood Sensor Alert with Arduino Uno and LED Alarm

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

When water creeps across your floor, every second counts. This kit transforms an Arduino Uno into a vigilant sentinel — two bare copper probes sit dead-simple on any surface, and the moment moisture bridges them, a buzzer shrieks and blue LEDs flash. It’s the first project that teaches kids and beginners how sensors, microcontrollers, and real-world alerts actually work, all while building a practical home security tool.

What You'll Build

You’ll create a fully functional water leak alarm that can sit under a sink, near a water tank, or behind a washing machine. The probes are nothing more than copper wires; dip them in a damp cloth or let them touch a spilled puddle and instantly the Arduino reads the circuit closure, sounds the active buzzer, and lights up two warning LEDs. It’s a tactile, visible, and audible guardian that runs on a common 9V battery, no soldering needed.

What You'll Learn

• Understand digital input and output on the Arduino Uno – reading a simple switch-like sensor
• Write and upload your first sketch that reacts to water conductivity
• Drive an active buzzer and LEDs directly from Arduino pins
• Build a reliable breadboard circuit using resistors, wires, and power management

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Parents and teachers looking for a hands-on STEM activity that blends physics, electronics, and safety awareness. It’s ideal for CBSE Class 5–10 school projects, ATL Tinkering Labs, and science exhibitions. Even B.Tech first-year students will use it to grasp sensor interfacing before scaling up to home automation. The 5–15 age range means a child can start building with adult supervision and progress to coding the logic independently.

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.