Build a Motion-Activated Perimeter Security System 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.

Imagine placing a small device near your front door that instantly flashes a ring of bright red LEDs and sounds an alarm the moment someone steps close. With this kit, you build exactly that — a real motion-activated perimeter deterrent. It’s a hands-on way to understand how home security systems work while creating something you can actually use to guard a bedroom, study, or entryway. The timed auto-reset means it arms itself again seconds after each trigger, ready for the next detection without any manual intervention.

What You'll Build

You will assemble a standalone security alarm on a breadboard. The HC-SR501 PIR sensor watches for infrared heat changes, and when motion is detected, the Arduino Uno triggers the 74HC595 shift register to flash 10 red LEDs in sequence while the buzzer wails for a set duration. After the alarm cycle completes, the system automatically resets and waits silently for the next motion event. The result is a convincing prototype that mimics the visible perimeter alerts used in commercial security setups.

What You'll Learn

• How to interface an HC-SR501 PIR motion sensor with Arduino Uno and read digital motion signals
• Controlling multiple LEDs efficiently using a 74HC595 shift register to save Arduino pins
• Writing Arduino sketches that manage timed events, non-blocking delays, and automatic reset logic
• Practical wiring skills for sensors, actuators, and power on a breadboard to build a reliable circuit

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is perfect for CBSE Class 11-12 students working on microcontroller-based physics or computer science projects, B.Tech ECE/EEE first-years building a foundation in sensor integration, and participants in Smart India Hackathon or ATL Tinkering Labs who need a ready-to-deploy security module. The clear instructions and pre-tested components also make it safe and engaging for younger builders in the 5-15 age range with basic adult supervision.

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.