#emc-devel | Logs for 2008-03-11

[00:26:01] <jmkasunich> cradek: I just tried scoping motion.program-line, but it seems to be zero all the time
[00:26:36] <jmkasunich> ok, I lied
[00:26:47] <jmkasunich> halmeter shows non-zero, gotta figure out what scope is doing
[00:27:08] <jmkasunich> odd - 2nd run and scope captured it just fine
[00:28:44] <jmkasunich> hmm, I think thats a halscope bug
[00:29:46] <jmkasunich> I added the new channel, hit force to trigger it, and the new trace didn't appear (no label or anything), then I hit force again, and it appeared on the second run
[00:32:10] <jmkasunich> ah crap - program-line doesn't help with this program - all the g33's come from the same line (they're in a loop)
[00:32:48] <jmkasunich> gotta unroll that loop
[00:35:36] <fenn> and now you're wanting tomp's #variables in hal
[00:36:56] <jmkasunich> wouldn't help
[00:37:00] <jmkasunich> #vars are in the interpreter
[00:37:17] <fenn> it would show you what loop iteration you're on
[00:37:35] <fenn> increment a #var each loop, output that value to hal
[00:37:40] <jmkasunich> for short programs, the interp is done and taking a nap before the spindle reaches full speed - everything is in the motion queue
[00:37:45] <fenn> i guess you could do that with M66 rigt now
[00:39:28] <fenn> m65 i mean
[00:40:11] <jmkasunich> unrolling the loop worked
[00:43:38] <jmkasunich> there are definitely some "misbehaviors" with G33 - they may be a result of shortish segments, but for whatever reason, I'm getting the wrong pitch on some segments, as well as the bobble
[01:01:32] <jmkasunich> the bobble happens on sim-lathe, but the wrong pitch doesn't
[01:01:51] <jmkasunich> unless I change the axis accel values to 5 (X) and 8 (Z) to match my machine
[01:01:58] <jmkasunich> then sim-lathe shows the same errors
[01:10:56] <jmkasunich> ok, we are seeing two different things here
[01:11:18] <jmkasunich> the bobble is NOT a "short move" effect - I lengthened both moves, and it still happens
[01:11:33] <jmkasunich> some of the other weirdness is a short move effect
[01:22:47] <jmkasunich> ok, a series of identical segments (same pitch, same X, Z decrementing by 1/4" each segment) only shows the bobble between the first and second segments, the other segment transitions are smooth
[01:23:18] <jmkasunich> it is independent of the length of the segments, and doesn't care whether the non-G33 move that preceeds the first one is a G0, a fast G1, or a slow G1
[01:23:38] <SWPadnos> can you try doing a series of G33 moves, then a non-G33, then another sequence of G33 (in the same program)?
[01:24:01] <SWPadnos> just curious as to whether the problem is from "startup" or from "synch-up"
[01:24:15] <jmkasunich> I'm about 99.94% sure its sync up
[01:24:28] <jmkasunich> when I was running the real part, I got the bobble on every threading pass
[01:24:36] <SWPadnos> oh, that's true
[01:25:51] <jmkasunich> I wish I had some small clue about the internals of the main TP
[01:26:16] <jmkasunich> * jmkasunich lives by comments, and they are few and far between in that code
[01:26:29] <SWPadnos> heh
[01:35:11] <jmkasunich> dammit, where is that cradek fellow
[01:36:00] <SWPadnos> in his Hot-Rod Lincoln :)
[01:36:41] <jmkasunich> gonna drive me to drinkin'
[01:37:00] <SWPadnos> heh
[11:55:18] <skunkworks_> logger_dev: bookmark
[11:55:18] <skunkworks_> Just this once .. here's the log: http://www.linuxcnc.org/irc/irc.freenode.net:6667/emcdevel/2008-03-11.txt
[11:56:45] <alex_joni> morning skunkworks_
[11:57:55] <skunkworks_> Good morning alex
[11:58:01] <skunkworks_> How is it going today?
[11:58:47] <alex_joni> pretty well
[11:59:01] <alex_joni> pondering on a mortgage
[11:59:07] <skunkworks_> Nice :)
[11:59:17] <alex_joni> weell.. yeah
[11:59:22] <skunkworks_> Good time to buy in the US ;)
[11:59:40] <alex_joni> so I heared
[12:00:23] <alex_joni> but commute costs might be much
[12:00:48] <skunkworks_> Heh - doesn't the owner need a usa branch
[12:00:50] <skunkworks_> ?
[12:00:57] <alex_joni> they already got one
[12:01:07] <alex_joni> in chicago iirc
[12:02:04] <skunkworks_> :)
[12:02:09] <alex_joni> hmm, nope..
[12:02:11] <alex_joni> http://www.cloos.de/english/unternehmensprofil/standorte/North_America.php
[12:02:18] <alex_joni> Schaumburg, Illinois 60193
[12:04:24] <skunkworks_> That would be in the same state as the cnc workshop...
[12:12:40] <alex_joni> oh, really?
[12:22:56] <skunkworks_> Galesburg, Illinois, USA
[12:24:43] <skunkworks_> 194 miles according to yahoo directions
[12:25:02] <skunkworks_> http://maps.yahoo.com/index.php#mvt=m&lat=41.492945&lon=-89.19409&mag=10&q1=Schaumburg%2C%20IL%2060193&q2=Galesburg%2C%20Illinois%2C%20
[14:47:09] <jepler> sigh, too bad gene didn't mention in his *first* post that this was using stepconf, or I'd have looked into the problem sooner.
[14:53:36] <jepler> hm, the pwmgen manpage doesn't document .offset!
[16:22:02] <fenn_> fenn_ is now known as fenn