Jon and others, Thanks for the replies.
The configs were in the ~/emc2/configs folder (home directory). So I guess this is not the problem. Playing around with the steplen and stepspace parameters does make the pulses nicer, but steppers still behaving erratic. Although I'm quite convinced I had a lot nicer output on the scope earlier. I'll try first with an older xylotex board. Just to make sure the problem isn't there. Thanks, Geert Jon Elson wrote: > Geert De Pecker wrote: >> Hi All, >> >> Due to some health problems, I didn't power up my emc box the last 2 >> months and when I did last week, ubuntu wanted to install an update >> which I accepted. Maybe stupid of me ... >> >> When I started emc, the X didn't respond anymore and the Y and Z behaved >> very erratically. Movement of these two is very unsmooth and it seems >> the motor receives >> >> My config is a cnc4pc breakout board and a recent xylotex 4 axis board. >> >> I checked the pulses with the scope and they seem to be very short. >> >> As I don't recall how it was before, I can't compare. >> >> Basically, my question is if anybody knows that there has been changes >> in either ubuntu or in emc during the last 4 to 5 months that could >> explain this? > My guess is that you edited the default setup files for your > local configuration, instead of making a copy in your user > directory. When the EMC updates were installed, it loaded a > new default config file on top of your edited one. > > If that isn't the problem, then there may have been some change > in the handling of ini file parameters that has made one of your > settings no longer make a setting. You mention the pulse width > being very short, so you might check for that. I took a quick > look at the configs/stepper directory, and didn't see ANYTHING > about pulse width in stepper_inch.ini or xylotex_pinout.hal > Maybe these files allow EMC to take the default, there must be > some way to set the pulse width when using motmod. > > Jon > > ------------------------------------------------------------------------- > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > Register now and save $200. Hurry, offer ends at 11:59 p.m., > Monday, April 7! Use priority code J8TLD2. > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Register now and save $200. Hurry, offer ends at 11:59 p.m., Monday, April 7! Use priority code J8TLD2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
