On Wednesday, January 07, 2015 10:10:26 AM Sebastian Kuzminsky did opine And Gene did reply: > On 01/07/2015 02:02 AM, andy pugh wrote: > > On 7 January 2015 at 08:00, Mark Johnsen <m...@ijohnsen.com> wrote: > >> Is gearchange the appropriate Hal component to use? Seems perfect. > > > > If you only have two gears then it is probably ideal. > > > > For more than 2 gears there are other options, but for some reason > > none have been accepted into the main package. > > Last time this came up i asked for help (since i dont know much about > what'd be useful in a gearchanger), and that killed the thread. I > guess i'll ask again. Help? > > http://thread.gmane.org/gmane.linux.distributions.emc.devel/13896/focu > s=13926
I may have been part of that thread. In any event, what I did on the lathe was to add a glade/python button to change the (IIRC) feedback gain from the encoder to the speed control PID, sits on the right panel of the axis screen and gives me a stiffer control at the lower gear speeds. Not entire satisfactory IMO, but it helps. There is enough backlash in the backgears that low speed stability can be a gear rattling problem. I had the cutoff blade bend over and lock the spindle from 400 revs enough times that I think there is a slightly bent shaft in the headstock & I need to order up and replace everything but the spindle and its bearings at some point. Did I ever mention that the 7x12's bed and tool post were made by goodyear? Lots of rubber content. OTOH, its done way bigger stuff than it was designed to do in the years I have owned it. I'd have to go look at the post-gui hal stuff again now since thats many moons back. I sort of treated it like a litter of 9 lives cats at the time, if I killed it, there was always another life, or kitten if that one was used up. ;0) Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS ------------------------------------------------------------------------------ Dive into the World of Parallel Programming! The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
