grbl is stepper motor controller ... that are too powerful for the normal drivers included on grbl Arduino shields (or integrated Arduino+drivers equivalents), and so I have been considering designing ...

Adjust the phase current, crank up the microstepping, and forget about it — that’s what most people want out of a stepper motor ... driver, inferior to the common A4988 and DRV8825.

So a DSLR camera was hooked up to my test electronics — an Arduino ... by the motor’s slight detent torque. The Texas Instruments DRV8825 on a Pololu-like stepper driver breakout board ...