I am building a motorized barn door tracker using an Arduino UNO and a stepper motor I took from an old scanner (Mitsumi M35SP-7T). I have been unable to find the datasheet for this motor specifically, only that the motor has a 140 Ohm mark on it and that I assume it should be powered from 24V.
I was planning on running the system with the Adafruit Motor Shield which claims to power motors up to 25V, but I am having difficulty finding a power supply that can push 24V. Frankly I am also concerned that I shouldn't even be using a full 24V power source, but I'm not sure that feeling is justified.
Any recommendations on power configuration for this setup? If I should be using a 24V power source, what kind of source is recommended? This was the only datasheet I could find that came close to this stepper motor: http://vinvin.dyndns.org/projects/M35SP-7T.pdf
On a related note, on the Arduino forums, it looks like someone else was trying to use the exact same stepper motor with a 24V power source: http://arduino.cc/forum/index.php/topic,13711.0.html
UPDATE: It seems that the scanner itself ran on 12VDC 1A. Not sure how that might affect this situation. I just need to be able to run the motor with as much torque as possible.