Build a Visible Perimeter Alert with Arduino Uno – LED Flash Warning 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.

Imagine a glowing ring of ten red LEDs that bursts into flashing action the moment someone steps into its zone, accompanied by a sharp buzzer. That’s exactly what you create with this kit—a visible perimeter deterrent that introduces sensor-triggered automation to young security explorers. Whether guarding a bedroom door or staging a science exhibition, the kit turns motion into a clear, immediate warning.

What You'll Build

A self-contained alarm that activates a ring of 10 red LEDs in sequence and sounds an active buzzer whenever the PIR sensor detects movement. The system resets automatically after a programmed delay, ready for the next trigger. Mount it on a wall, place it on a desk, or integrate it into a cardboard fortress—it draws attention exactly when needed.

What You'll Learn

• Interfacing an HC-SR501 PIR motion sensor with Arduino Uno
• Controlling multiple LEDs using a 74HC595 shift register
• Programming auto-reset timers and logic for security applications
• Driving an active buzzer from digital output pins

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Young makers aged 5–15 and beginners curious about security electronics. This kit is especially relevant for ATL Tinkering Labs, CBSE middle‑school science projects, and first-time participants in Smart India Hackathon junior tracks. Engineering aspirants from IIT, NIT, VIT, and BITS will appreciate its clear introduction to sensor‑triggered systems.

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.