I think I've wired this connection before, but the stepper motor is not able to run through its steps. I'm using the motor know example from this site (http://arduino.cc/en/Tutorial/MotorKnob) and a PF35T stepper (http://www.allelectronics.com/make-a-store/item/SMT-108/STEPPER-MOTOR-6-WIRE/1.html). The stepper just vibrates back and forth instead of running the target number of steps. Power is 12V, 1A. Any ideas what I'm doing wrong?
I had the array oriented backwards! Problem solved.