Am 28.02.2014 um 03:35 schrieb John Alexander Stewart <ivatt...@gmail.com>:
> Ok - can anyone remind me *why* the Printrboard is not a good thing to > interface with LinuxCNC? looks like a neat I/O octopus I had a short (ie non-exhaustive) look at the firmware for this board I have the impression this is meant to run an interpreter like grbl _on board_, meaning the path from interpreter to stepper does not go over USB in a LinuxCNC setup stepper control commands would (likely) go over USB, which would pick up the non-determinism of USB in the step puls generation path; I conjecture this will lead to unsatisfactory results I could imagine a firmware solution which does the link between LinuxCNC and this board over SPI, like Gemi's picnc "outboard" - that would likely work a lot better but that's all wisdoms from a 5min google safari - beware - Michael > > Background - I have a Printrbot Simple kit that I'm taking away on an > Internet-free weekend, to install. So, I have been installing the software > for slicing and dicing, and for controlling this board. > > I'd like to run this from LinuxCNC, but, google has not been my friend > tonight, other than to find "hal2arduino" which is commented as being "very > slow for driving steppers". > > Why is that? 25,000 baud to this board, and it runs (from youtube) just > fine with the Printrbot Simple. What am I missing?? > > (Look, it's inexpensive hardware, and, if we can connect LinuxCNC up with > just a USB cable, why not?) > > Comments, web links, slap across the back of the head, etc, more than > welcome. > > John. > ------------------------------------------------------------------------------ > Flow-based real-time traffic analytics software. Cisco certified tool. > Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer > Customize your own dashboards, set traffic alerts and generate reports. > Network behavioral analysis & security monitoring. All-in-one tool. > http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Flow-based real-time traffic analytics software. Cisco certified tool. Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer Customize your own dashboards, set traffic alerts and generate reports. Network behavioral analysis & security monitoring. All-in-one tool. http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
