Hi
I have purchased a couple of the Motor Shield V2's, but they are limited to 13.5Volts. I need to power a couple 36 Volt Stepper Motor's, and was wondering if there was any way to easily modify/add to the board to enable it to use the 36 Volt input power from an external power supply to power the Stepper Motors.
Thanks
Motor Shield V2 Output Voltage Increase
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- adafruit_support_mike
- Posts: 67454
- Joined: Thu Feb 11, 2010 2:51 pm
Re: Motor Shield V2 Output Voltage Increase
The TB6612 H-bridge has an absolute upper limit of 15v, so there's no simple way to tweak the shield for 36v.
You could use the Motor Shield as a driver for external mosfets, but that would take a bit of work.
You might find a driver module that fits your needs over at http://pololu.com/ They specialize in robotics and have a wider range of motor controllers than we do.
You could use the Motor Shield as a driver for external mosfets, but that would take a bit of work.
You might find a driver module that fits your needs over at http://pololu.com/ They specialize in robotics and have a wider range of motor controllers than we do.
- greyjack
- Posts: 2
- Joined: Mon Sep 22, 2014 5:17 am
Re: Motor Shield V2 Output Voltage Increase
Thanks, I was thinking along those lines, the question is now to get the correct Mosfet, that will turn on and off properly with the 5v power source.
- adafruit_support_mike
- Posts: 67454
- Joined: Thu Feb 11, 2010 2:51 pm
Re: Motor Shield V2 Output Voltage Increase
You can use a 12v supply to the Motor Shield to make sure you have plenty of voltage for the N-mosfets on the low side, but the challenge will be driving the P-mosfets on the high side.
Please be positive and constructive with your questions and comments.