This expansion board can be used as a drive expansion board for engraving machines, 3D printers, etc. There are a total of
4 slots for stepper motor drive modules. (Note that this board does not contain A4988 stepper motor drive modules, which
can be purchased separately from our store) , Can drive 4 stepping motors, and each stepping motor only needs 2 IO ports,
that is to say, 6 IO ports can manage 3 stepping motors very well, it is very convenient to use, farewell The operation of
traditional stepping motors is cumbersome.