Expand the possibilities with a Micro: bit extension This Micro: bit expansion card is designed to be installed vertically in order to best adapt to your other products: robot, vehicles, etc. Installing this extension allows you to improve performance and thus access to new possibilities: improved vehicles, robot, piano … Very efficient, this extension also contains several protection circuits: against excessive discharges, against overloads and against connection reversals. The Micro: bit extension therefore offers many possibilities: RGB light programming, ringing, secure power, three communication modes, graphic programming, etc.