Comments on: One stepper driver, two stepper motors

By: Eric

Eric — Thu, 26 May 2016 23:22:25 +0000

Elias, if I wanted to use a dedicated host controller, such as pronterface or something similar, instead of octoprint to run my printer, is it possible? If so, how can this be accomplished? I have the replicape rev A4A.

Thanks

By: Elias Bakken

Elias Bakken — Mon, 07 Dec 2015 15:56:19 +0000

In reply to MatijaZ. Hi! That's unfortunate! I tried going through much of the process in a Chrome browser with no issues. I don't have a Chromebook, though. Where does it stop for you?

By: MatijaZ

MatijaZ — Mon, 07 Dec 2015 15:38:45 +0000

Hi Elias, I am having difficulties with ordering your product above through my Chrome. Is it possible to get into shop with chromebooks. Site doesn’t open and I am not sure wheter is it fault on my side. Thx in advance. Regards, Matija

By: Elias Bakken

Elias Bakken — Sun, 01 Mar 2015 12:36:56 +0000

In reply to C A Buster. Hi! Two NEMA23 motors in parallel sounds like it might be beyond what this controller can do. It might be an option to use one controller for each of the steppers as a sort of slave mode, but that has not been implemented in software yet.

By: C A Buster

C A Buster — Fri, 27 Feb 2015 22:34:03 +0000

Am considering using the Replicape and Beaglebone Black to use for 3D printing with a Shapeoko-2 frame. Will one Replicape controller support two Shapeoko NEMA23 motors wired in parallel, that have these specs: Rated Voltage: 2.3 V, Current/Phase: 2.8 A, Inductance/Phase: 2.2 mH, Resistance/Phase: 0.82 Ohm. And if so, what would the programmed peak current be for the one controller?
Thank you for your consideration.

By: Rares Vernica

Rares Vernica — Thu, 21 Aug 2014 21:49:54 +0000

In reply to Elias Bakken.

Thanks! I tried these two:

https://pypi.python.org/pypi/SPIlib/
https://github.com/datacode-taavi/python-spi

but neither worked. Finally the files linked here worked:

http://www.gigamegablog.com/2012/09/09/beaglebone-coding-101-spi-output/

BTW, I managed to get Redeem work on Debian. There were a couple of issues with your Python code that I had to patch. I can send you some quick bug reports, just let me know where.

By: Elias Bakken

Elias Bakken — Wed, 20 Aug 2014 21:26:33 +0000

In reply to Rares Vernica. I dont remember exactly, but python-spi should work, no?

By: Rares Vernica

Rares Vernica — Wed, 20 Aug 2014 20:38:12 +0000

BTW, what Python SPI library are you using in the Stepper.py file: “from spi import SPI”?

By: Rares Vernica

Rares Vernica — Tue, 19 Aug 2014 00:41:30 +0000

In reply to Elias Bakken.

Thank you! I have to use a Debian image, but I’m just trying to get a stepper motor moving. Nothing fancy. The cape is correctly detected and I tried your example here http://hipstercircuits.com/accelerated-stepper-motors-on-beaglebone/ but I got stuck. I left a comment there.

By: Elias Bakken

Elias Bakken — Mon, 18 Aug 2014 23:51:00 +0000

Hi! If you don’t mind flashing your BBB and just want something that works, download the latest Thing-image: http://wiki.thing-printer.com/index.php?title=Thing. Actually I uploaded a new image yesterday, so just change the date on the image name. If you want to learn how the inner workings, have a look at Redeem: https://bitbucket.org/intelligentagent/redeem