Driver, Stepper Motor CLEARANCE

The 200x micro-step selection on this driver made a huge difference in how smoothly my motor runs at low speeds. I've got it wired for optical isolation and the signal's been rock solid even with a long cable run. Running it at 3A on a constant current setup without any drift.

Swapped this in for a noisy older driver and the difference in smoothness at low speeds is obvious. The 0.2 to 6.0 amp range meant I could dial it in for a small bipolar motor without any fuss, and the opto-isolated inputs kept things clean.

Running my NEMA 23 at 200x micro-stepping and the motion is noticeably smoother than the old setup. The 0.2 to 6.0 amp range gave me plenty of headroom for a smaller motor too. Photo coupler isolation is a nice touch at this price.