I'm using this motor, made by adafruit: http://www.adafruit.com/products/168
The winding resistance is 72 W /Ø for our model. One thing I thought of is that the motor is rated at 0.3-0.4 amps per phase, so maybe I should multiply the expected current draw by 2, since the motor has 2 coils to energize (2 phases). Is this a correct thought process?