All:
Having trouble getting the stepper to draw more than 500ma using the Rorze driver (pdf's attached). I have tried all combinations of coil configurations, half coil, full coil, series, parallel along with different resistor sets and I can not get the motor to draw more than 500ma. Have tried as low as 0.5 ohm resistor sets but no luck.
Seems full coil in series seems to give me the best low speed torque, but not enough for my application. Need to push the driver to 1.0 -1.5 amps for it to work.
Any suuggestions, or am I doing something wrong. Have tried a L298 driver and it works, pushing the motor to 2amps, but would prefer to use the Rorze, if I could get it working properly.