On 13 October 2017 at 23:13, John Dammeyer <jo...@autoartisans.com> wrote: > The desire for the Beagle with me was originally that with LinuxCNC and a > quadrature encoder on the spindle along with the hardware QEP handled by the > PRU we'd have an awesome little lathe controller. Alas, that's the one thing > in MachineKit that hasn't been addressed yet.
I lost track of Machinekit a while ago. Do they have any encoder-counting facility in the PRU? If they have then the rest is just config. (editing text files...) > Mach3 and my ELS both use one pulse per revolution for threading. And before > this starts a massive thread on how that just can't work, it does work and as > long as the spindle is reasonably steady it works well. Indeed, and LinuxCNC can be persuaded to work that way too. > But you obviously can't just stop the spindle mid thread and then turn the > spindle by hand manually. So there are limitations. LinuxCNC can do this (and yes, I am turning the spindle by hand): https://www.youtube.com/watch?v=T4q8gCpeY1A -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
