If the EasyDriver is the one from SparkFun, review the schematic and see if you could substitute a digital potentiometer in place of the 10K rotary. Or Review the datasheet for the chip and see if a DAC could drive the REF pin of the driver chip.
If the EasyDriver is the one from SparkFun, review the schematic and see if you could substitute a digital potentiometer in place of the 10K rotary. Or Review the datasheet for the chip and see if a DAC could drive the REF pin of the driver chip.