There are 2 additional inputs/outputs. These can be used for connecting a range of parts and can be used in either digital or analogue modes.
The board also produces a regulated 3V supply that is fed into the 80 way connector to power the inserted BBC micro:bit, removing the need to power the BBC micro:bit directly
The board has been designed so that the BBC micro:bit can be inserted either way around (facing forward or backwards) however if you wish to use the broken out pins the LED matrix on the BBC micro:bit must be facing them.
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