#emc-devel | Logs for 2009-05-21

[07:27:06] <micges> is emc use s-curve acceleration and deacc ?
[07:27:17] <micges> or trapezoidal ?
[07:27:32] <alex_joni> trapezoidal
[07:29:09] <micges> alex_joni: know about any plans to make it s-curve or selectable ?
[07:29:28] <alex_joni> micges: only if someone contributes the code
[07:29:36] <alex_joni> it's pretty hard to implement
[07:29:44] <alex_joni> I think cradek tried, but didn't succeed
[07:30:01] <micges> oh ok
[07:30:06] <alex_joni> s-curve as such isn't _that_ hard, but doing blending, and threading and all of that is hard
[07:30:45] <micges> yes blending.. nightmare :)
[07:31:17] <alex_joni> blending by itself is not hard either :D
[07:31:35] <micges> I was on 4 day service in country, didn't make chance to recreate hm2 stepgen bug :|
[07:31:45] <micges> tomorrow will be the time
[07:31:54] <alex_joni> I know seb reproduced a bug you reported and is working on it
[07:32:01] <alex_joni> not sure about the specifics though
[07:32:16] <micges> yes but he hasn't get all info (me too)
[07:32:30] <alex_joni> yup
[07:34:30] <micges> nex week Im going to start reimplement all my finctions and goodies in emctask
[07:34:43] <micges> will notice you all about progress
[07:34:56] <micges> I've reached limit of speed of python
[07:34:58] <micges> :|
[07:36:15] <micges> I've plan to bulid small fast (about 20000mm/min, acc=2000) machine to tests
[07:36:15] <alex_joni> poor emctask
[07:37:01] <micges> I forgot: I've notoced error in emctask:
[07:38:14] <micges> when I have XYZ machine, then selecting some vector to run it will do it correclty
[07:39:58] <micges> but when I add simple U axis to that config then run from line N then all restarts are from vector N+2 or N+1 index
[07:40:31] <alex_joni> yuck
[07:40:39] <micges> througly tested, number of emc axes change behaviour of this
[11:46:08] <CIA-48> EMC: 03bigjohnt 07v2_3_branch * 10emc2/docs/src/config/ini_config.lyx: remove section number from axis display items
[11:59:41] <CIA-48> EMC: 03bigjohnt 07TRUNK * 10emc2/docs/src/config/ini_config.lyx: remove section number from axis display items
[13:53:49] <cradek_> cradek_ is now known as cradek
[15:35:29] <cradek> hi matt!
[15:37:55] <skunkworks892> are you guys sitting next to one another?
[15:37:59] <skunkworks892> ;)
[15:38:03] <cradek> heh, yes
[15:39:08] <mshaver> hi!
[15:50:01] <skunkworks892> cradek: my backpack is on the dlt tapes. I think I will remember them :)
[15:53:49] <cradek> ah, thanks! I forgot about those!
[17:12:04] <steve_stallings> steve_stallings is now known as steves_logging
[17:16:32] <skunkworks892> Is the gang all there? ;)
[18:43:17] <jepler> skunkworks892: not everyone yet
[18:43:25] <jepler> john k and john e are supposed to arrive tonight
[18:43:32] <skunkworks892> ah
[18:43:32] <jepler> not sure when steve s or steve p show up
[18:44:17] <skunkworks892> Did you end up following the bus?
[18:44:34] <alex_joni> * alex_joni feels bad he's missing fest again :/
[18:45:40] <skunkworks892> alex_joni: you need to talk your (is it father-in-law?) into buying a private jet...
[18:45:57] <skunkworks892> for the company.. ;)
[18:46:06] <alex_joni> without the "-in-law"
[18:46:13] <skunkworks892> ah - ok.
[18:46:29] <alex_joni> we're a bit far from a private jet :)
[18:46:43] <alex_joni> not to mention one that makes it safe over the atlantic
[18:47:04] <skunkworks892> maybe you could get a concord cheap ;)
[18:47:17] <alex_joni> for a retrofit :P
[18:47:41] <alex_joni> maybe a TU-144
[18:48:31] <skunkworks892> ah - soviet
[18:52:18] <skunkworks892> jepler: how setup are you to make circuit boards? (if someone where to bring bits and copper clad?) (and the zenbot was somewhere that didn't annoy people) (and...)
[18:57:01] <jepler> skunkworks892: I hope to be able to make boards here
[18:57:11] <jepler> skunkworks892: I have to get a stepper driver, I think I have the rest (bits and single-sided copper clad)
[18:58:06] <skunkworks892> jepler: are you still using the pluto for step generation?
[18:58:15] <jepler> skunkworks892: no, I'm in the middle of converting it to mesa
[18:58:47] <skunkworks892> nice
[18:58:49] <skunkworks892> :)
[18:58:55] <jepler> skunkworks892: but the main problem is that I fried my xylotex
[18:59:04] <jepler> there are a number of things I can borrow, but then there's the wiring to do..
[18:59:22] <skunkworks892> yeck. I hear that is easy to do.
[18:59:57] <skunkworks892> do you know what it was? short? unplugging steppers with it on?
[19:01:02] <jepler> one of the stepper wires came out of the screw terminal and shorted to gnd
[19:01:55] <skunkworks892> yeck
[19:03:31] <alex_joni> skunkworks892: http://upload.wikimedia.org/wikipedia/commons/7/76/Tu-144-cockpit2.jpg
[19:05:57] <jepler> I think that what that does is make it drive 27V into 2ohms with no current feedback .. and it cooked the chip before the so-called thermal protection shut it down
[19:29:32] <alex_joni> 27V at 2ohms is only 10Amps or so
[19:36:48] <skunkworks892> jepler: is it the L298 based board?
[20:13:31] <jepler> skunkworks892: no, a3977
[20:13:32] <jepler> allegro
[20:15:54] <skunkworks892> oh -darn
[20:16:33] <jepler> why?
[20:16:54] <jepler> anyway, I have a couple options here at workshop to get the zenbot running, and after I go home I'll decide what to buy as a replacement
[20:17:26] <jepler> is there something you want to mill?
[20:23:09] <skunkworks892> I thought I might have some l298's
[20:23:38] <jepler> oh
[20:23:41] <jepler> thanks, but that won't help
[20:23:45] <skunkworks892> heh
[20:26:16] <skunkworks892> I was thinking a fast small machine would mill a couple drive boards in less than the 3 hours it take me.. ;)
[20:26:37] <skunkworks892> ok - maybe 2 hours
[20:47:41] <skunkworks892> jepler: plus wouldn't it be a good experience for you to do double sided boards? ;)
[20:55:46] <CIA-48> EMC: 03cradek 07TRUNK * 10emc2/src/emc/iotask/ioControl.cc:
[20:55:46] <CIA-48> EMC: FMS is some kind of tool tracking. Matt S says EMC never did anything
[20:55:46] <CIA-48> EMC: with it. Somewhere along the way we started assuming and then
[20:55:46] <CIA-48> EMC: requiring the tool number and FMS number to be the same.
[21:52:20] <skunkworks> jmk-wvm: ! you made it?
[22:27:52] <alex_joni> good night all, have fun at fest
[22:55:30] <jmk-wvm> skunkworks: yep, I'm here
[23:03:02] <steves_logging> steves_logging is now known as steve_stallings
[23:04:08] <steve_stallings> is jelper's dead Xylotex board there? I have some spare A3977 chips that fit it
[23:04:53] <jepler> steve_stallings: no, it's at home
[23:05:42] <steve_stallings> ok
[23:16:04] <steve_stallings> well I do have the rig that runs my micro mill at the shows, 3 gecko 251s a breakout board that expects a parallel port, and power supplies
[23:17:02] <steve_stallings> all total 14 pounds of my 50 pound checked luggage budget, will anything be accomplished by my bringing it
[23:17:41] <steve_stallings> I get there Friday night late
[23:20:19] <steve_stallings> cradek: did the supply for Sam's servo make it?
[23:23:36] <steve_stallings> last call for electronic widgets for me to bring will be noon EDT Friday, via PMDX support email contact, not IRC