So I was able to find a salvaged stepper motor from a laser printer, and think I have figured out the 13 wires coming out of it. I disassembled it and found the following:3 wires are for the electromagnets ( I assume a center tapped coil). there are 6 coils on the PCB within the motor case. 8 wires are for the Hall-effect sensors ( 2 for sensor power and 6 for sensor pull-off, 3 hall-effect sensors placed 120* apart) They look like tiny white squares. then there is some sort of rounded square-wave pattern formed into a circle on the back of that pcb. there are 2 wires for that.
Soo, all the stepper motors I have come into contact thus far have just been the 4-wire variety, and this is just throwing me for a loop.
Anyone have any idea how this should work? I put an ohm meter to the 3 leads, and no matter which combo I do, they are all within 2-3 ohms of eachother.
Any help on this subject would be appreciated.