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Sparkfun controller

Posted: Mon Nov 30, 2015 3:25 am
by jfdotcom
So aside from the obvious changes (no quick connect headers), color, form factor, what are the differences between the Sparkfun controller and the one you guys are shipping?

Re: Sparkfun controller

Posted: Mon Nov 30, 2015 3:38 am
by WillAdams
One major difference is it’s opensource: ... ko_v10.pdf

Eagle files: ...

Another consideration is whether or not it uses the same comm setup as the Carbide 3D board, so one can use Carbide Motion (they chose to use UGS in their documentation though).

An enumeration beyond that would be good.

Re: Sparkfun controller

Posted: Sun Dec 06, 2015 12:19 am
by kapudon
I've been comparing these. Functionally, I only see two differences:
1) The Sparkfun unit just has one y-axis motor controller (3 total controllers, not 4). The two y-axis motors are wired to this in parallel.
2) The Sparkfun unit has more versatile stepper motor configuration hardware:
Microstepping increment options are 1, 1/2, 1/4, and 1/8 (4-position switch instead of just 2).
Stepper motor current is continuously variable from 1A to 2A using a rotary pot (instead of 2-position switch presetting current for NEMA 17 or 23 stepper coils)

The first is obviously a cost/space saver. The second is to better accommodate DIY builds with odd motors. Neither would really seem to matter if you are going to use a stock S3. I can't see anything else, but would be interested if anybody else does.

Re: Sparkfun controller

Posted: Sun Dec 06, 2015 3:12 am
by Fablicator
Looks like they us a FTDI rs232 serial-USB which I suspect will be a more reliable connection than the carbide board.

I have multiple 3D printers on the same circuit as my carbide shapeoko 3, and only the carbide board loses connection with turning on/off machinery (router, vacuum, drill press, circular saw)

Re: Sparkfun controller

Posted: Thu Aug 11, 2016 2:17 pm
by mrTheWheel
The Limit switches has build-in RC network and schmit-triggers!