Chris Radek wrote: > >> I suppose it could just be a bum keyboard or motherboard, and the spate >> of "stuck >> keys" could just be a fluke, as I had been seeing this very occasionally >> before. >> Yes, I am tending more toward a bad keyboard that has been this way since the ORIGINAL system was built in 1998. > It would sure be nice if you could say whether this happens with a > different keyboard and/or computer. I know changing taahe computer > isn't trivial, but maybe changing the keyboard is. > The problem is so rare that I can't get a baseline before making any changes. > After the several seconds did you estop or hit a soft limit or > something else? What do you do to stop it, or does it stop on its > own? [later: I see this is answered below - is it always true that > you stopped it by tapping another key?] > > I just hit a jog key and released and it stopped, every time. >> /proc/cpuinfo shows 730 MHz Pentium III, 256 MB, and it has an Intel 82810E >> graphics chip. >> > > OK, not the fastest machine, but probably not the slowest in use > either. > Plenty of CPU for a servo system, even with Axis displaying 3D on a dumb graphics chip. > > Interesting! Do you think using the wheel is a necessary part of it? > I sure couldn't see any sign of that last night. In fact, I am leaning strongly toward dirty keyboard contacts generating enough keyboard bounce that it might scramble the keyboard's 8051 chip and lose key up events. > This is a kind of interaction I hadn't considered and I bet it is > much more lightly-tested than keyboard alone. > >> Well, I will try out another keyboard and see if I see a difference. >> Great, and when you test some more, concentrate on wheel vs keyboard >> interaction. I have a nagging feeling that's part of it. If you can >> reproduce it, we can fix it. Well, now I **CAN'T** reproduce it, so I think the keyboard cleaned itself! I really don't think I will learn anything at all until the next actual machining session. I tested as long as I could stand wathcing the machine jog idly back and forth without any anomalies.
Jon ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-developers mailing list Emc-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-developers
