Steppers found :) Trying to decide driver
June 16, 2011
I wandered past an old Brother MFC 9700 in the corridor and grabbed it. Found two stepper motors, one from the Auto-document feeder and one that was moving the optical scanner.
ADF motor: Mitsumi M42SP-6NPK. I figure this little guy at 41.4 mN/m
Scanner motor: Shinano Kenshi STP-42D009. Wrote what I figured out about this in this older thread. Not totally sure but something like 200 mN/m or 30 ish oz-in. makes sense as it is larger/heavier.
I think I'm going to drive them with the driver from Pololu. Trying to figure out if I need the one with voltage regulation or without. Anyone able to help me figure that out? AFAIK I connect from the GPIO pins to the DIR/STEP pins (I don't need to worry about micro-stepping). And I connect from my PoE power (~12-18VDC) direct to VMOT.
I think if I get the one with voltage regulators I don't need to connect a separate logic voltage (at 3.3 or 5) from the microcontroller board, it gets that regulated down from the VMOT input. If I get the one without the regulators, I'd need to connect from a 3.3 or 5VDC connector on the RouterStation. Two 3.3VDC sources (UART and JTAG) even without using the USB connector, so I think that means I don't need to get the voltage regulated driver.