#linuxcnc-devel | Logs for 2013-11-07

[07:19:44] <skunkworks> hmmm http://imagebin.org/276065
[07:19:53] <skunkworks> those 2 spikes seem a bit wonky
[07:20:19] <skunkworks> (well the whole trace doese -but that is beside the point)
[07:20:26] <skunkworks> I should have zoomed in on it
[07:27:16] <jthornton> just when I thought I understood what G/R0 button in the Touchy MDI tab does it doesn't seem to do anything with G0
[07:27:44] <jthornton> anyone know what the G/R0 button in the MDI tab of touchy actually does?
[07:50:41] <cradek> lets you enter r/theta for a polar move
[07:52:18] <cradek> generates gN @NNN ^NNN or however it's spelled
[08:05:22] <cradek> is it broken?
[08:35:22] <jthornton> I think so, if I press G/R0 the enter 0 for a rapid move then next nothing happens
[08:35:34] <cradek> hm
[08:35:34] <jthornton> then/the
[08:35:37] <cradek> what version?
[08:35:45] <jthornton> 2.5.3
[08:39:04] <cradek> weird, neither G button is working right for me
[08:40:28] <cradek> I'm never getting XYZ words to fill out
[08:40:31] <cradek> what the heck
[08:40:38] <cradek> in 2.5.3 sim/touchy
[08:40:52] <cradek> bbl
[08:41:00] <cradek> can't work on it right now
[09:12:52] <JT_Shop> G/XY works fine for me. Press G/
[09:13:23] <JT_Shop> G/XY then 0-3 then next and you get the correct words to use
[09:14:41] <cradek> aaaaand now they're both working for me
[09:15:23] <cradek> but they sure weren't an hour ago
[09:16:34] <cradek> and g76 doesn't have an F (not enough lines?)
[09:16:48] <JT_Shop> weird
[09:17:39] <JT_Shop> and G/R0 just worked for me on the BP
[09:18:11] <cradek> something's odd, isn't it
[09:19:53] <JT_Shop> yes, I'll try and remember what I did to break it when it breaks again, I can't touch much on the BP at the moment I'm in the middle of a job
[09:26:30] <cradek> oh -- g76 doesn't need F, duh
[09:32:04] <cradek> darn, I expected to find a missing emcstat.poll() before reading the axis_mask, but it's there and the code looks right
[09:32:16] <cradek> I do not have a second guess
[09:32:39] <cradek> JT_Shop: if you can figure out how to reproduce it please share...
[09:32:46] <JT_Shop> will do
[09:33:50] <cradek> I'm especially baffled that you had XY working (giving you the axis words to fill in) but not Rtheta. that seems to mean we had different failures and I don't see a way they can be connected
[11:59:59] <IchGuckLive> Question why is there no entry for backlash on the pncconf
[12:00:13] <IchGuckLive> there is almost all there but no entry on this
[12:04:11] <mozmck> hmm, looks to me like there is a bug in the PID hal component? or it could be a bug in my eyes...
[12:04:49] <seb_kuzminsky> what do you see, mozmck ?
[12:04:54] <mozmck> in src/hal/components/pid.c line 339.
[12:05:29] <mozmck> hmm, may be a bug in my eyes.
[12:05:33] <seb_kuzminsky> what looks wrong about that line?
[12:06:05] <mozmck> I guess deadband will always be positive, and I was kind of thinking of it being +/-
[12:07:14] <seb_kuzminsky> i'm not sure what a negative deadband would mean
[12:07:40] <mozmck> Yep, looks fine now. I usually figure that out after I ask a dumb question or make a dumb statement!
[12:08:02] <seb_kuzminsky> but nowhere do we enforce deadband being non-negative, nor do we talk about it in the docs
[12:11:03] <IchGuckLive> seb how is to ask over pncconf
[12:12:30] <seb_kuzminsky> IchGuckLive: cmorley works on pncconf
[12:13:04] <seb_kuzminsky> i think backlash compensation is a somewhat rarely used feature, you may be best off adding it by hand to the config files pncconf makes
[12:15:46] <IchGuckLive> i know but this kills the nice reconfig
[12:17:26] <IchGuckLive> as with mesa you got somany nice stuff to config with
[12:23:17] <seb_kuzminsky> IchGuckLive: maybe open a Feature Request ticked on our bug tracker? https://sourceforge.net/p/emc/feature-requests/
[12:23:48] <seb_kuzminsky> someone opened a ticket to add backlash support in stepconf already
[12:23:55] <IchGuckLive> seb_kuzminsky: thanks i will ask to him personly about that
[12:24:19] <IchGuckLive> thee is more needed
[12:24:26] <IchGuckLive> there
[12:24:41] <IchGuckLive> and some space on the Axis config side also
[12:25:05] <IchGuckLive> is free to put the entrys in
[14:21:50] <JT_Shop> IMHO backlash support for a wizard is a bit beyond what a wizard should do...
[15:45:12] <KimK> I agree with JT, they should power up for the first time and then see what their LinuxCNC-measured backlash is. Plus there's the newbie factor of "why doesn't backlash comp make my backlash problem (loose hardware) go away?", but I guess that's a separate issue. OK, OK, getting off my soapbox now.