Not sure this is the best place since there are only two posts since 2017. But here goes. Is there a way to bypass the stepper driver ICs to use an external stepper motor driver?
I see in the user manual there are 4 user pins, User1-4, somewhere in the J23 40pin header. Is it possible to reroute the direction and step signals, pins Pins40&47 of the F401, that would normally go to one or two of the L6474 stepper driver to two ...