Medium-sized cnc machines, which I am defining as those using NEMA 23 and 24 motors, need about 5A per stepper, usually mandating separate driver modules alongside a control board. However, 3d printer ...
There are a few 32-bit ARM-based 3D printer controller boards out there such as the Smoothieboard, the Azteeg X5 mini, [Traumflug]’s Gen5 electronics, whatever board is in the Monoprice MP Mini Select ...