Micro:bit

The BBC Micro:bit is the ultimate pocket-sized computer for STEM education and DIY robotics. Whether you need a standalone V2.2 board for coding classes, a Tiny:bit smart car kit, or an AI vision sensor for advanced IoT projects, we have the exact hardware. Backed by 20 years of electronic retail experience in Sham Shui Po, our technical team provides on-site component matching and ready-stock availability to help educators and makers build without delay.

Micro:bit Expansion Boards & STEM Kit Specifications

To truly leverage the power of the Micro:bit, you need the right expansion modules. Here is a technical breakdown of our core educational components:

Component Type Key Technical Features Best Use Case
Micro:bit V2.2 Board 32-bit ARM Cortex-M4, Built-in Mic, Speaker, Touch Logo The core brain for all STEM coding and IoT projects.
I/O Expansion Boards Converts edge connector to standard 2.54mm pins Essential for connecting multiple servos, sensors, and breadboards securely.
Smart Robot Kits Includes motor drivers, line-tracking, and ultrasonic sensors Teaching robotics, kinematics, and block-based coding (MakeCode).
AI & Vision Sensors Built-in machine learning algorithms, I2C/UART interface Advanced object tracking and facial recognition for smart home setups.

Important Note (Power Limitations & Burn Hazard): The Micro:bit's edge connector pins can only output a maximum of 3.3V and a very low current (around 90mA total across all pins). You cannot drive DC motors, heavy-duty servos, or long LED strips directly from the Micro:bit pins. Doing so will instantly overload and fry the board. You must use a dedicated Motor Driver Expansion Board with an external battery pack to power mechanical components.

Frequently Asked Questions (FAQ)

Q: Can I use my old Arduino sensors with a Micro:bit?
A: Yes, but with strict voltage precautions. Most traditional Arduino sensors operate on 5V logic, while the Micro:bit strictly uses 3.3V logic. Sending a 5V signal directly into a Micro:bit GPIO pin will destroy the chip. You must use a 3.3V/5V Logic Level Converter or choose sensors specifically designed for 3.3V operation.

Q: What is the difference between Micro:bit V1 and V2.2?
A: The V2.2 features a significantly upgraded processor, a built-in speaker, a MEMS microphone, and a touch-sensitive logo. If you are following modern STEM tutorials involving sound generation or voice recognition, you must use the V2.2, as the V1 lacks these hardware capabilities.