Sometimes google is almost useful. Best date I can come up with is Dec 2011 for emc 2.2.
> On Mar 30, 2025, at 4:42 AM, gene heskett <ghesk...@shentel.net> wrote: > > On 3/29/25 13:15, Dave Engvall wrote: >> Hi Sam and Peter, >> Clearly my googlefoo is lagging. Thanks for filling in the blanks. >> Isa motherboards are still available; both used and new. New will run about >> $200 plus processor. Used a lot less (maybe) and a gamble. >> >> I still need to test what I have, it might still work but has set idle for >> several years. Some wiring needs to be replaced and tested. I have new >> brushes in the spindle motor. Still the more prudent route may be to go >> 5i25-7i77 and ’simply’ move over all the I/O and analog signals. >> Stay tuned. >> >> Dave > > The 5i25 is a good basis, Its encoder inputs can track a 1000 line encoder > directly on the motor shaft of my GO704 at 3000 revs spindle speed, nearly > 21000 revs. The diff between our stuff is a 7i76 expander card because my > stuff all runs on steppers, no analog servo's, but some steppers are closed > loop stepper/servo's. That style needs no PID's as they do EXACTLY what the > TP tells them to do. Top speed is of course determined by the stepper > voltage, and Hanpose is making drivers good for 90 to 120 volts. Those > drivers, CL42 for nema-17's, CL57 for nema-23's, similar for nema-34 and up, > running on 72 volts will I believe outrun a servo. They also regulate motor > currents based on detected error, so they run as cold as a true servo. I make > my own rotary axises, using a 5/1 worm drive and the 3nm nema-23, can run > under a degree (mostly backlash in the worm) error at 600+ rpm on 42 volts. > If they should lose home, the whole machine is stopped in around a > millisecond. Has yet to happen when running gcode. > > Good to see you are making progress Dave. > >> >>> On Mar 28, 2025, at 7:42 AM, Sam Sokolik <samco...@gmail.com> wrote: >>> >>> It is still in the docs.. >>> >>> https://linuxcnc.org/docs/stable/html/drivers/servo-to-go.html >>> >>> On Fri, Mar 28, 2025 at 9:25 AM Dave Engvall <dengv...@charter.net> wrote: >>> >>>> Is there any support for the stg card do I own an orphan? >>>> >>>> Dave >>>> >>>> >>>> _______________________________________________ >>>> Emc-users mailing list >>>> Emc-users@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>>> >>> _______________________________________________ >>> Emc-users mailing list >>> Emc-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-users >> >> >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net <mailto:Emc-users@lists.sourceforge.net> >> https://lists.sourceforge.net/lists/listinfo/emc-users > > Cheers, Gene Heskett, CET. > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author, 1940) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net <mailto:Emc-users@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
