On Wednesday 07 March 2018 22:05:40 jeremy youngs wrote: > Doubtfull, if the interface is wired so the + terminals are connected > to the 5 volt buss, and a logic zero at the output then becomes the on > signal, tied to the 4060's - terminals. It will likely run just fine > on faster signals. The diff is that if the logic signal is tied to the > + terminal, the pullup from the interface to turn on the opto's in the > 4060, isn't near as strong as the logic zero sinking ability. I have a > variety of drivers, and none of them are running as slow as the > choices in stepconfig. Set the polarity of the signals in the hal file > so that the step signals are negative for a logic one. You may want to > check that with a real scope. > Invert pins to sink instead of source , more current handling > ability. Run the other script in terminal, for 30 minutes copy report, > paste here . Will do , that will take a bit of fanagalling as no > internet at the shop , so be patient ( should have tomorrow evening or > so ) , you said run something, can I run linuxcnc?
I believe thats what I wrote. No net at the shop? Scary, how do you update?. All my machines are net connected, but the only firewall is dd-wrt reflashed into the router. No one has gotten thru it in a decade, one of the internets best kept secrets. > I believe the on board video is Intel , don't Know if 915 . It gives > the same rtapi error regardless of video used. > The old motherboard ate ram at a pretty decent rate One thing I've noted is that 4GB of dram seems to be a sour spot, and gets into swap very easily. 2GB or 8GB is much less of a problem, with memory allocation being much more tightly controlled at 1 or 2 GB than at 4 GB. I have an r-pi 3b, with only a gig of ram, and with 7 days of uptime, is only into swap about 7 megs and it has done a few hours work in that 7 days. Had a power bump last week else its uptime would be 60+ days. > I figured the caps > were bad and a reconditioned Mobo was less than the caps , I figured > the Mobo would help the rtapi , no such luck. I about have this y > ballscrew contained , still not the final revision but it will be > better than before , and I will get to use in stock screws so that's a > plus. Contained? please elaborate. "stock screws" generally are metal to metal threads and waste 90+ percent of the motors power in frictional losses compared to ball screws. > Also is there a tutorial on smi ? Perhaps YouTube? I will myself but I > have been puzzled about this and isolcpus , it's kinda my > understanding that those were for previous versions of rtai . > Thank you for your time Gene . I believe there is a discussion about smi on <http://wiki.linuxcnc.org>. Might have to search for it. Whether its still valid I'm not positive and will assume the final word is in the wiki. isolcpu's has I believe been deprecated, I don't know that I am using it on any of my 4 current machines. OTOH, I am running 2.8-pre on all 4 machines. There could be some diffs between the latest 2.7 and 2.8-pre. > ---------------------------------------------------------------------- >-------- 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 -- 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> ------------------------------------------------------------------------------ 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
