DFRobot Xia Mi Multi-Functional Expansion Board for BBC micro:bit V2
DFRobot Xia Mi Multi-Functional Expansion Board for BBC micro:bit V2 - Image 2
DFRobot Xia Mi Multi-Functional Expansion Board for BBC micro:bit V2 - Image 3
SKU: SENS-2939
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DFRobot Xia Mi Multi-Functional Expansion Board for BBC micro:bit V2

₹2,879.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Xia Mi Expansion Board is a highly integrated, multi-functional carrier board designed for the BBC micro:bit V2, providing over 10 onboard sensor and actuator modules including I2C temperature/humidity, flame detection, OLED display, motor drivers, and RGB LEDs to facilitate advanced STEAM education and robotics projects.

Features

  • Integrated carrier board for BBC micro:bit V2 with over 10 functional modules including I2C sensors, motor drivers, and an OLED display.
  • Features dedicated ports for HuskyLens AI camera, SR04/URM10 ultrasonic sensors, and external 5V GPIO for stronger drive capability.
  • Onboard 4-channel I2C motor driver with forward/backward rotation indicators for robot car and Mecanum wheel applications.
  • Includes I2C-based sensors: infrared flame detector, SHT30 temperature/humidity sensor, rotation angle potentiometer, and traffic light module.
  • Compact 57 x 87mm form factor designed for educational robotics contests and advanced programming projects.

Out of stock

Description

The DFRobot Xia Mi Expansion Board serves as a comprehensive interface platform for the BBC micro:bit V2, consolidating a wide array of I2C sensors, motor control, and display modules onto a single, compact PCB. It is engineered to transition students from basic micro:bit programming to complex system integration, such as controlling robotic vehicles and interactive devices. The board provides both 3.3V and externally-powered 5V GPIO banks to accommodate components with different logic level and current drive requirements.

This expansion board is specifically designed for the micro:bit V2 and is not backward compatible with the V1 model. Its integrated design simplifies wiring, reduces breadboard clutter, and accelerates project prototyping in educational settings. The inclusion of dedicated ports for popular accessories like the HuskyLens AI camera and ultrasonic ranging modules makes it an ideal foundation for robotics competitions and advanced STEAM curriculum.

Key Features

  • High-density integration of over 10 sensor and actuator modules on a single 57mm x 87mm board.
  • Dedicated 5V-powered ports for high-current devices including HuskyLens AI camera and ultrasonic sensors.
  • Onboard I2C motor driver controls four DC motors with bidirectional rotation status LEDs.
  • Includes a 128x64 pixel OLED graphical display with a protective metal cover.
  • Integrated I2C sensor suite: infrared flame sensor, temperature/humidity sensor, rotation angle sensor, and RGB traffic light module.
  • Two external I2C expansion ports and multiple 3.3V/5V GPIO breakouts for additional peripherals.
  • Optimized layout for Mecanum wheel robot construction and educational robotics contests.
  • Compatible exclusively with the BBC micro:bit V2, leveraging its Bluetooth 5.1 capabilities.

Applications

  • STEAM education platform for teaching sensor integration, motor control, and data visualization with the micro:bit.
  • Foundation for robotics contest entries, including line-following, sumo, and Mecanum wheel omnidirectional robots.
  • Prototyping system for interactive art installations combining light (NeoPixel), sound, and environmental sensing.
  • Educational tool for learning I2C communication protocol with multiple slave devices on a single bus.
  • Development base for IoT projects using the micro:bit's Bluetooth connectivity and onboard sensor data.

Technical Specifications

Item TypeExpansion Board
CompatibilityBBC micro:bit V2 (Not compatible with V1)
Operating Voltage5V DC
Board Dimensions87mm (L) x 57mm (W)
Bluetooth SupportBluetooth 5.1 Dual Mode (via micro:bit)
Onboard Motor Channels4 (I2C controlled)
Onboard Display128x64 OLED (I2C)
Onboard SensorsInfrared Flame (I2C), Temperature/Humidity (I2C), Rotation Angle (I2C)
GPIO Ports5V: P0, P1, P2, P8; 3.3V: P0, P1, P2, P8, P12, P14, P16
Specialized PortsHuskyLens (5V I2C), SR04 Ultrasonic, URM10 Ultrasonic
Shipping Weight0.065 kg

Frequently Asked Questions

Is this expansion board compatible with the original BBC micro:bit V1?

No, the DFRobot Xia Mi Expansion Board is specifically designed for and only compatible with the BBC micro:bit V2. It will not function correctly with the V1 model due to differences in pinout and power distribution.

What is the purpose of the two different GPIO voltage groups (3.3V and 5V)?

The 3.3V GPIO pins (P0, P1, P2, P8, P12, P14, P16) are connected directly to the micro:bit's internal logic level. The 5V GPIO pins (P0, P1, P2, P8) are powered from the board's external 5V input, providing higher current capability for driving modules like relays, larger LEDs, or servos that require a 5V signal.

How do I control the four onboard motor driver channels?

The four motor channels are controlled via the I2C communication protocol. You must use the dedicated DFRobot Arduino library or compatible MicroPython modules to send commands to the motor driver's fixed I2C address. Each channel supports forward and reverse control, with status indicated by onboard two-color LEDs.

Can I use both the onboard I2C sensors and add my own external I2C devices?

Yes. The board includes two dedicated I2C expansion ports (3.3V) and a 5V HuskyLens port. All onboard sensors share the micro:bit's primary I2C bus (pins 19 & 20). You can connect additional I2C devices to the expansion ports, ensuring their addresses do not conflict with the onboard sensors (flame, temp/humidity, etc.).

Package Includes

  • 1 x DFRobot Xia Mi Multi-functional Expansion Board for BBC micro:bit V2

Additional Information

Weight 0.065 kg
Dimensions 8.7 × 5.7 cm

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