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Main Category Interface
Sub Category Micro:Bit
Introduced 1 June 2019; 2 years ago (2019-06-01)
Current version 1.1.7
Current version date 1 January 2020; 17 months ago (2020-01-01)
Size 2x24U (32x64 mm)
Weight 16 g
Height 15 mm
North 2x xBus + xPDI
South None
East None
West 2x xBus
Microbit logo.svg

Micro:Bit Interface

Product highlights

  • Connects a BBC Micro:Bit to the XinaBox eco-system
  • Access to SD Card
  • Green and Blue LED
  • xPDI, can be used to program a CC03 and CS11
  • 1000 mA power supply for heavy duty circuits
  • Solder based pad for activating 5V
  • Solder based pad for configuring UART/Serial direction


This xChip allows you connect your BBC Micro:Bit to the XinaBox eco-system. You can program the Micro:Bit as usual in MakeCode, JavaScript, Python, and in C/C++ using the Arduino and MBED IDE.



  • 1000 mA power supply
  • SD Card using SPI and P16 for Chip Select
  • Access to I2C
  • Access to UART/Serial using P0 and P1
  • Configuration of the direction of the UART/Serial via solder pads
  • Green LED on P2
  • Blue LED on P8
  • Micro-USB connector for power and for using the xPDI for programming
  • Micro-USB port is fully ESD protected
  • Solder pad for activating 5v on the XinaBox xBus VSRC pin
  • LED indicator for power


MakeCode and JavaScript

Look for MakeCode extension for the XinaBox eco-system by searching for and looking for repositories starting with "pxt-".


You can program the MicroBit in MicroPython. For Python libraries look for "python-" in the" repository. Before programming in Python, watch this video to learn about the way you program the micro:bit in microPython for the XinaBox eco-system: Programming in Python


You can program the Micro:Bit in C/C++. You can use the Arduino and the MBED IDE. For Arduino libraries look for "arduino-" in the" repository.


Micro:Bit pin usage

Notice in this image that all pins of the micro:bit is in use:

Micro:Bit Pin Used by Function xBus Name
P3 Micro:Bit LED Col 1
P0 IM01 Serial RXD
P4 Micro:Bit LED Col 2
P5 Micro:Bit Button A
P6 Micro:Bit LED Col 9
P7 Micro:Bit LED Col 8
P1 IM01 Serial TXD
P8 IM01 Green LED
P9 Micro:Bit LED Col 7
P10 Micro:Bit LED Col 3
P11 Micro:Bit BUTTON B
P12 Micro:Bit Reserved
P2 IM01 Blue LED
P13 IM01 SD Card - SCK
P14 IM01 SD Card - MISO
P15 IM01 SD Card - MOSI
P16 IM01 SD Card - CS
P19 Micro:Bit & IM01 I2C SCL
P20 Micro:Bit & IM01 I2C SDA

If you want to connect non-XinaBox sensors, switches, etc. then please watch this video Connecting non-XinaBox sensors to micro:bit using IM01 and IX01.


  • If you connect non-XinaBox sensors as per the video above to the RXD and TXD pins, then you cannot use the CW01 WiFi solution at the same time, since using those pins will conflict with the usage of the CW01.
  • If you connect non-XinaBox sensors to the SDA and SCL pins, then you cannot use any other xChip, nor can you use the onboard Micro:Bit Accelerometer and Magnetometer, since using those pins will conflict with the use of I2C.

External Links