Micro Bit Driver Expansion Board

Since the advent of micro: bit, its simple and practical way of programming iswidely loved by makers, students and teachers. Its sample design, coupled with awealth of pin resources, give it infinite possibilities. This expansion boardnot only leads to 9 micro: bit onboard GPIO interfaces, but also comes with4-way motor drives and 8 servo interfaces, of which 4-way motor drives can bereused as 2-way stepper motor drives.