I've been tearing apart printers for their steppers, and it appears most if not all run at 24V.
I would like to use one of my motorshield V2 to drive these, but I understand those shields can't provide the proper voltage. Now, assuming I can power the stepper at the proper 24V, could I just insert mosfets between the stepper and the motorshield?
Here's a terribly quick sketch of what I'm imagining: http://imgur.com/OorYpl2
I imagine running the stepper will take a little bit of ingenuity. I've got FQP27P06 mosfets ( https://www.sparkfun.com/datasheets/Com ... P27P06.pdf )
Is this a pipe dream, or is it feasible?
24V steppers with motorshield v2
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- adafruit_support_bill
- Posts: 88087
- Joined: Sat Feb 07, 2009 10:11 am
Re: 24V steppers with motorshield v2
You can run the motors on 12v. They should work, but have about 1/2 as much torque.
Your MOSFET solution will not work with a 4-wire bipolar motor, since the current needs to reverse through the entire coil - and would be flowing backwards through the MOSFET. That configuration would only work for unipolar motors.
Another option is the Synthetos gSheild: https://www.adafruit.com/product/1750
Your MOSFET solution will not work with a 4-wire bipolar motor, since the current needs to reverse through the entire coil - and would be flowing backwards through the MOSFET. That configuration would only work for unipolar motors.
Another option is the Synthetos gSheild: https://www.adafruit.com/product/1750
- avatardelta
- Posts: 13
- Joined: Thu Nov 27, 2014 3:02 am
Re: 24V steppers with motorshield v2
I wasn't sure, thank you.
I'd do the shield, but at this point I need to shy away from extraneous purchases, even if it's from my favorite electronics vendor. I'll consider the unused torque as "future potential". :)
I'd do the shield, but at this point I need to shy away from extraneous purchases, even if it's from my favorite electronics vendor. I'll consider the unused torque as "future potential". :)
Please be positive and constructive with your questions and comments.