The Xia Mi expansion board adds more than 10 functional modules and expansion features for your BBC micro:bit V2 including multiple sensors, a 4-way motor driver, RGB LEDs, OLED display, relay, IR receiver and more!

This awesome buffet of features allows budding coders to learn both the basic functions of the micro:bit with the option to progress using the many onboard features and online tutorials. It’s a quick, simple and hassle-free way to explore different hardware whilst learning to code.

The board makes a great foundation for micro:bit robotics projects too, with the onboard motor driver and distance sensor ports allowing easy expansion.

Features

• Multiplemodules for STEAM education:
  • Traffic light module (Red/Yellow/Green)
  • 2x W2812 RGB LED
  • Temperature & Humidity Sensor
  • Infrared Receiver
  • Infrared Flame Sensor
  • Rotation Sensor (potentiometer)
  • 12864 OLED Display
  • 4x Motor Driver
  • Relay Module
• External Power Supply (6-12V)
• Power Switch
• I2C Expansion Port (5V)
• 3.3V Expansion Ports
• 5V Expansion ports
• SR-04 Ultrasonic Sensor port
• URM10 Ultrasonic port
• HuskyLens Port
• USB power input (5V)
• Removes the complications of hardware and connections for early users
• Great value compared to buying the components and parts alone

Specifications & Pin Mapping

• Operating Voltage: 5V (USB)
• External Power Supply: 6V~12V (switch controls the external power)
• Relay Module (P9) 1 (On-board status indicator)
• Infrared Receiver (P13) 1
• W2812RGB Light (P15) 2 (RGB0 RGB1)
• Infrared Flame Sensor (I2C) 1
• Temperature & Humidity Sensor (I2C) 1
• Rotation Angle Sensor (I2C) 1
• Red/Yellow/Green Traffic Light Module (I2C) 1
• 12864_OLED Display (I2C) 1 (With black metal protective cover)
• Motor Drive (I2C)4 (Onboard forward/backward rotation two-colour indicator)
• GPIO(5V): P0 P1 P2 P8 (External power with the stronger driving capability)
• GPIO(3.3V): P0 P1 P2 P8 P12 P14 P16 (Inner power of micro:bit main-board)
• I2C Expansion Port (3.3V) 2
• HuskyLens Port (5V I2C ) 1 (External power with stronger drive capability)
• SR04 Ultrasonic Sensor Port 1 5V P0 P1 GND
• URM10 Ultrasonic Sensor Port 1 5V P0 P1 GND
• Dimensions: 57×87 mm

Package Contents

• 1x Xia mi Board for micro:bit

micro:bit not included. Some tutorials require additional parts.

Resources

• Product Wiki
• MakeCode programming platform
• GitHub

MakeCode Tutorial

• Enter the MakeCode programming platform in browser: https://makecode.microbit.org/
• Create a new project and name it.
• Load the Xia Mi program library:
  • Click setting, and expansion in turn
  • Paste this link in the search box: https://github.com/DFRobot/pxt-DFRobot_xia_mi_Board

Tutorial List

Some of these tutorials require additional parts to connect to the board.

• Light Up RGB LED
• Traffic Signal Light
• Ambient Temperature and Humidity Sensor
• Control Servo via Angular Rotation Sensor
• IR-controlled Relay Switch
• Fire Alarm
• SR04 Ultrasonic Distance Sensor
• 4-way Motor Drive