The main function of the Yahboom mini expansion board of BBC Micro:bit is to connect 20 IO ports of Micro:bit. The expansion board is designed with a vertical socket, which makes the expansion board and micro:bit keep 90°and will appear three-dimensional sense after insertion. The bottom of the expansion board is equipped with 20 2.54-mm pins, which can be inserted into the breadboard or connected to other Dupont lines directly.
Version: BST Expansion m:bit v1.0
Fixing hole diameter: 3mm
Fixing hole distance: 69x24mm
Interface: 2.54mm pin header
Basic expansion board*1