Micro:bit Intruder Alarm Kit - Your Child's First Step into Home Security with Real Motion Detection

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 the excitement when your child points a small sensor at a doorway, waves a hand, and their own micro:bit screams an alert while red LEDs flash. This kit transforms the BBC micro:bit into a working intruder alarm - a security system they wire, code, and test themselves. As their first home security project, it demystifies the technology behind real motion sensors and builds rock-solid confidence through a tangible, working gadget.

What You'll Build

Your child will assemble a motion-triggered alarm on a half breadboard. The PIR sensor detects movement, the micro:bit instantly processes the signal, and the piezo buzzer sounds while two red LEDs blink a warning pattern. They'll walk away with a functioning device they can place near a bedroom door or toy shelf - a real security system they made.

What You'll Learn

• Connecting a PIR motion sensor to the micro:bit and reading its digital signal
• Programming conditional logic in MakeCode to trigger output devices
• Wiring LEDs with current-limiting resistors on a breadboard
• Controlling a buzzer through micro:bit pins to create alarm tones

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Curious kids in grades 3-6 who are just starting with electronics will thrive with this single-project kit. It's a favourite in CBSE schools' computer labs, ATL Tinkering Labs, and weekend hobby clubs across Bangalore, Mumbai, and Delhi. If your child has ever wondered how motion-sensing lights work, this kit turns that curiosity into a working device in an afternoon.

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.