This board possess 24 programmable RGB lights, each of which uses a highlight chip, can be programmed to independently set the color of the light, just like an aura. The micro:bit board is connected in a locking manner and is connected to the expansion board by screws and a transparent acrylic plate. We also integrated a microphone on the expansion board, the on-board RGB lights can be controlled by this microphone. In addition, the expansion board is designed with Arduino pin holes and LEGO block holes. If you like micro:bit, want to learn Arduino and are interested in building blocks, you will need this expansion board.