Parking Distance Sensor Kit with BBC Micro:bit - Build an Automatic Touch-Free Lid Opener

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

Turn a simple distance-sensing idea into a gadget that opens a lid the moment you wave your hand near it. This kit pairs an HC-SR04 ultrasonic sensor with a BBC Micro:bit v2 and an SG90 servo - all connected using crocodile clips on a half breadboard - so young makers can build a touch-free automatic opener without any soldering or complex wiring. It is a playful first step into how everyday objects can be made smart with code and sensors.

What You'll Build

You will assemble a circuit where the ultrasonic sensor continuously measures distance. When your hand comes within 10 cm (configurable in the Micro:bit MakeCode editor), the servo swings a lid open. The lid stays open while you keep your hand nearby and closes gently when you move away. By the end of the session, you will have a working hands-free container - perfect for a dustbin, snack box, or school desk organiser - that you programmed yourself.

What You'll Learn

• Wiring an HC-SR04 ultrasonic sensor to a BBC Micro:bit using crocodile clips and breadboard
• Writing block-based code in MakeCode to read distance and set thresholds
• Controlling an SG90 servo motor to open and close a lid automatically
• Debugging real-world sensor behaviour, such as noise and hand-swipe timing

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Created for young tinkerers aged 8-10 who are just starting with electronics and coding. It fits beautifully into ATL Tinkering Lab starter sessions, CBSE Class 4-6 hobby projects, and weekend parent-child builds. Even a beginner with zero prior experience can complete it because all connections use crocodile clips and the Micro:bit is programmed with colourful blocks in MakeCode. No soldering, no breadboard wiring confusion.

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.