Also, if a ground was needed but was not connected I don't believe I would get any output/movement from the motor, but as I mentioned, I do, just not movement that makes sense to me.
So, I've jumped from the return side of my ULN2003-chip supply, to the ground of the Arduino.
Stepper small_stepper(STEPS_PER_MOTOR_REVOLUTION, 8, 10, 9, 11);
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