On Saturday 11 August 2018 04:49:02 steve A wrote: > Hello, every one, > > > I want to run LinuxCNC without GUIs on a small board, like Raspberry > Pi 3B or BeagleBone Black, with a GUI on another device via network. > So, I don't need many required packages determined by > "dpkg-checkbuilddeps" which occupied large storage space. Is there a > tutorial to do that? > So use a bigger sd card on the pi 3b. Size of the installed system is then not a problem. With a 32 or 64G card, wearout is years down the road.
WRT the remote gui, the lags in the video are horrible, about 1 frame a second. The pi can manage about 7 or 8 frames a second on its own and I've gotten quite used to it. And according to the monitoring tools, the pi is loafing while doing it. The internalusb-2 pinhole for data is the lag problem. Fortunately, the spi interface is direct, so the spi to the controller card can be written at 42 megabaud, and read at 25. rpspi.ko handles all that flawlessly here. I'm running a 70 yo Sheldon 11x36 with it. Quite well in fact. > > By the way, I want to use Preempt-RT. Can anyone give me some advises? Subscribe to the linux-rt list at kernel.org and wait for the next announcement of a working version, download the src's, edit the config to get rid of the stuff you don't need and make pkg-target, where target is an installable deb or whatever. Its beta so expect breakage. Or, if you have a heck of a big mailbox, I can send you a dd installable image from my card as of about 6 weeks ago. Or maybe I could put it on my web page where you could grab it. All that would take is a softlink to where its at now in /usr/src. But its not compressed, 30,255 megabytes. Tested by writing it to a 64G card, works fine. But it will take a while to download as my upload speed is only about 2 megs/second. Cable modem for poor folks. No clue if xz could handle that w/o damage. You will get gui stuff that I've done which may or may not be to your taste, and which will need a couple encoder dials on the apron and some mode pushbuttons too. Rather than preserve the cranks, I've made jog wheels out of the encoders, so I can drive it by hand too at 1,2,5 selectable speeds. Encoders are from mpja.com, $20/copy. If they aren't there, you can also use the keyboard. Even with my image, it will be a slog to do because I didn't start with a usable machine, so much of the conversion is my own design. > Thanks! Have a good day! > ---------------------------------------------------------------------- >-------- Check out the vibrant tech community on one of the world's > most engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-developers mailing list > Emc-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-developers -- 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-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
