[Gdeaver]

What about micro stepping? Stepper drivers chop to control current. Nema 17's run OK at 12 volts but perform better at 24 volts. Nema 23's perform much better at 24 volts and more for the larger ones. I like TI dvr 8825's for up to 2.2 amps at 24 volts. The Toshiba drivers TB6600 and newer are good up to 4 to 5 amps and up to 40 volts. Above 5 amps 2 discrete H bridges are needed and they use a micro controller with DSP to do the micro step translation and some other tricks to control mid velocity harmonics. Talons are not designed for stepping.