Am 14.11.2013 um 16:03 schrieb Maximiliano Fermín Córdoba <m.f.cordoba...@gmail.com>:
> Hi > > I´ve made another test, setting feedrate at 5000 mm/min, in my case should -----------------------------------^^^^^^^^^ you are obviously running a G-code program then? > give me a 41,6khz step rate,, but when I measured it whit the scope, I´m > seeing a lot of jitter in the steps. > > I´ve seen a picture of the performance of the PRU with perfect results at > 40000 hz, so I thought I should point this out. what are you trying to find out? if you want to find out about the PRU stepgen signal quality, then you should set it up with HAL to run at fixed speed if you are testing via a G-code program, this means jitter by the operating system modulates the commanded position of motion and hence the input of stepgen, in which case you are looking at motion signal quality, not stepgen performance - Michael > > Thanks everybody > > Maxi > > > > > > 2013/11/14 Maximiliano Fermín Córdoba <m.f.cordoba...@gmail.com> > >> HI >> >> I´m trying to modify the BeBoPr-Bridge.ini file, but I get stuck when I >> saw that the steps timing config was already OK for me. (I need pulses of >> 1useg and 1useg minimum distance between each other) >> >> The thing is that I´m seeing step pulses of 10usec width, but the config >> is set to 1useg ([...] STEPLEN 1000 in nanoseconds [...]). >> >> Is this an issue of the minimum step pulse possible ? >> >> Also, an error come out saying : "hpg: stepgen.00.maxvel is too big for >> current step timings & position-scale, clipping to max possible". Has this >> something to do with my issue? >> >> >> Thanks to all of you >> >> >> >> >> >> >> 2013/11/13 Charles Steinkuehler <char...@steinkuehler.net> >> >>> On 11/13/13 20:01, Jeff Pollard wrote: >>>> Hi, >>>> >>>> I never found a GUI editor available on the BBB Machinekit system >>>> through the desktop (doesn't mean it's not there somewhere). I >>>> installed 'gedit' once, but later my system started getting realtime >>>> delay errors popping up in Axis. I'm not sure if gedit itself caused >>>> the problem, but it started right after I installed it..... >>> >>> Yeah, there might not be one. By default, I install the bare minimum to >>> get LinuxCNC up and running (I don't even install vim, just the plain vi >>> pulled in by the default Debian install).t I figured there might be >>> something in the file browser or elsewhere, but it wouldn't shock me if >>> there's not. >>> >>> I'll have to see if I can find a light-weight editor to add to the >>> package list... >>> >>> -- >>> Charles >>> >>> >>> ------------------------------------------------------------------------------ >>> DreamFactory - Open Source REST & JSON Services for HTML5 & Native Apps >>> OAuth, Users, Roles, SQL, NoSQL, BLOB Storage and External API Access >>> Free app hosting. Or install the open source package on any LAMP server. >>> Sign up and see examples for AngularJS, jQuery, Sencha Touch and Native! >>> >>> http://pubads.g.doubleclick.net/gampad/clk?id=63469471&iu=/4140/ostg.clktrk >>> _______________________________________________ >>> Emc-users mailing list >>> Emc-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> >> >> > ------------------------------------------------------------------------------ > DreamFactory - Open Source REST & JSON Services for HTML5 & Native Apps > OAuth, Users, Roles, SQL, NoSQL, BLOB Storage and External API Access > Free app hosting. Or install the open source package on any LAMP server. > Sign up and see examples for AngularJS, jQuery, Sencha Touch and Native! > http://pubads.g.doubleclick.net/gampad/clk?id=63469471&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ DreamFactory - Open Source REST & JSON Services for HTML5 & Native Apps OAuth, Users, Roles, SQL, NoSQL, BLOB Storage and External API Access Free app hosting. Or install the open source package on any LAMP server. Sign up and see examples for AngularJS, jQuery, Sencha Touch and Native! http://pubads.g.doubleclick.net/gampad/clk?id=63469471&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
