#emc-devel | Logs for 2009-08-15

[01:31:08] <cradek> well I can't believe it, but I may have fixed my spindle drive
[01:31:13] <cradek> it's been running a few hours now
[01:31:46] <cradek> that would be about $600 worth of good news
[01:32:14] <SWPadnos> cool
[01:32:46] <SWPadnos> hmmm. so maybe if I sent you a few 6" tubes, you'd actually have the time to put some threads in them ... :)
[01:34:58] <cradek> how long are they?
[01:35:30] <cradek> that sounds like it would be hard if they are long
[01:35:58] <SWPadnos> 6" long
[01:36:20] <SWPadnos> only 1" across
[01:39:02] <cradek> oh 1" dia - yeah I could do that - how many?
[01:39:11] <SWPadnos> 3 I think
[01:39:48] <cradek> you need a lathe :-)
[01:39:58] <SWPadnos> s//working/ :)
[01:40:30] <SWPadnos> it was a good deal, but it might have been better for me to get one that I could actually plug in and use a little
[01:40:37] <SWPadnos> manual even
[01:41:07] <cradek> for the hell of it, we called the power company and asked what it would take to get 3 phase to the house
[01:41:15] <SWPadnos> maybe I could do some EMC development and borrow that Sherline from NIST ;)
[01:41:20] <SWPadnos> $kkk
[01:41:35] <cradek> it costs an extra $20 per month
[01:41:59] <SWPadnos> no "last mile" fees?
[01:42:00] <cradek> and the installation cost would be ... $75,000
[01:42:03] <SWPadnos> ah
[01:42:12] <cradek> so, we said 'no thanks'
[01:42:21] <SWPadnos> yeah. you can get a big solar array for that much
[01:42:44] <SWPadnos> or a bigger rotary phase converter, and a lot of savings
[01:42:46] <cradek> or another house closer to 3 phase power
[01:42:55] <SWPadnos> hmmm. not here, but maybe there
[01:43:10] <SWPadnos> well, unless it's under some railroad tracks or something
[01:43:15] <SWPadnos> (which would be close to three phase)
[01:45:20] <jtr> the local power company is putting in a new substation 3 doors down...
[01:45:48] <jtr> and high tension lines. Sigh.
[01:45:55] <SWPadnos> bzzzt bzzzt
[01:46:05] <jtr> and goodbye treeline
[01:46:39] <jtr> 10 acres, sale price $140k
[01:46:47] <SWPadnos> yeah
[01:47:39] <jtr> don't think this will do a lot for our properth value.
[01:47:46] <jtr> s/h/y/
[02:16:21] <Dave911> cradek... how close are you to three phase lines? Sounds like they would have to redo a bunch of overhead lines on poles. For $75K you can buy a 3 phase diesel generator and run that for more than a few hours.. ;)
[02:25:35] <cradek> new wires and a new transformer, and I think it's all underground
[02:26:20] <SWPadnos> I think it was like $4-$5 per foot some years ago
[02:47:59] <skunkworks_> I think I am a block away from 3 phase..
[02:48:11] <skunkworks_> cradek: what was the drive issue?
[02:50:16] <cradek> ask me again in three days or so... if it's still working then, I'll say it was the capacitors I replaced in some power-supply type areas
[02:50:43] <cradek> there's a cheesy little power supply that gives +5/+15/-15 and some of the caps looked overly old
[02:50:54] <cradek> we'll see :-)
[02:51:17] <SWPadnos> Yaskawa has capacitor replacement specified as a normal maintenance procedure for hteir drives
[02:51:22] <SWPadnos> their
[02:51:27] <cradek> but I let it run several hours tonight - pretty good since it was faulting every minute or two
[02:51:42] <SWPadnos> as preventive maintenance, every 3-5 years or some such
[02:52:07] <cradek> SWPadnos: my kingdom for good electrolytic caps (throughout the entire past - I would need to get a time machine for my kingdom)
[02:52:26] <SWPadnos> new caps might make the time machine work
[02:52:47] <skunkworks_> great job
[02:52:47] <cradek> it's worth a try anyway
[02:53:15] <cradek> could you bring new caps along for the trip to fix the time machine again when you get there? or would they age?
[02:53:37] <skunkworks_> if they did - you would.. so we can't go there..
[02:54:10] <skunkworks_> try not to think about it. ;)
[02:54:33] <cradek> I'll worry about it later - there'd be lots of time
[02:54:34] <SWPadnos> I guess that depends on how you carry them, assuming that you don't age
[02:55:04] <SWPadnos> I wonder if clothing would turn back into rocks or sunlight or something
[02:56:13] <cradek> that sounds painful
[02:56:27] <skunkworks_> hydrogen?
[02:57:20] <SWPadnos> huh. I wonder if any sci-fi writer has actually considered energy (in addition to mass) when thinking about things returning to their "constituent parts"
[02:58:20] <SWPadnos> I know there's at least one book where a lot of energy is used to move stuff in one direction, but most of it comes back when you return the stuff to its rightful place
[02:58:52] <SWPadnos> (so they're very very careful to gather all the dust and whatnot that they move around, so they don't damage the grid when they return it)
[03:03:30] <skunkworks_> heh
[09:12:47] <alex_joni> cradek: this might be interesting: http://www.roble.info/robotics/motioninterpolation/html/MotionInterpolation-1se2.html#x3-20002
[09:18:18] <micges> alex_joni: I've just readed 10 times teleop-notes and finally understand it, sorry for yesterday's stupid questions ;)
[09:48:14] <alex_joni> micges: don't be
[09:48:19] <alex_joni> it's quite ok to ask questions ;)
[09:48:33] <alex_joni> even answering questions helps understand things better
[09:48:43] <micges> sure do
[10:32:36] <micges> alex_joni: one question, EMCMOT_JOG_CONT can be removed, only EMCMOT_JOG_ABS, EMCMOT_JOG_INCR can do all joint/teleop joint functionality?
[10:33:27] <micges> s/joint/jog/
[11:20:33] <MediumJohnT> MediumJohnT is now known as jthornton
[16:05:53] <alex_joni> micges: hi
[16:06:10] <alex_joni> I'm not sure I remember what JOG_CONT and JOG_ABS are supposed to do
[16:07:08] <SWPadnos> _CONT should (theoretically) start the axis (joint) jogging in a direction, until it's told to stop
[16:07:28] <alex_joni> right, that's why I would guess too
[16:07:36] <alex_joni> then I guess all 3 should stay
[16:07:44] <SWPadnos> I don't know what ABS would be used for though
[16:07:52] <SWPadnos> jogging seems inherently incremental
[16:07:52] <alex_joni> there is no provision for jog ABS in the gui now
[16:08:05] <alex_joni> it's like an MDI g1
[16:08:09] <skunkworks_> jogging only in the positive direction ;)
[16:08:10] <SWPadnos> right
[16:08:16] <alex_joni> you can't do g1 MDI in joint mode though
[16:08:22] <alex_joni> only in cart
[16:08:32] <SWPadnos> sure
[16:08:35] <alex_joni> so maybe it's useful to have the JOG_ABS infrastructure
[16:08:45] <alex_joni> JOG_ABS to 0,0,90,0,90,0
[16:08:47] <SWPadnos> sure, I guess so
[16:09:13] <SWPadnos> JOG_ABS to 0,0,90,0,90,0,1,2,3,4,55,12,6 ...
[16:09:30] <SWPadnos> (since joints shouldnt be mapped like axes)
[16:10:04] <alex_joni> yeah, whatever ;)
[16:10:07] <SWPadnos> so the interface could get a little hairy, since the number of joints isn't quite as constant as the number of cartesian coordinates
[16:10:09] <alex_joni> * alex_joni was thinking 6R
[16:10:12] <SWPadnos> yep :)
[16:10:19] <SWPadnos> brb
[16:10:23] <alex_joni> you have the joints defined in the ini though
[16:12:55] <micges> CONT is jogging to joint limit, ABS is jogging to some position
[16:16:21] <alex_joni> right
[16:16:35] <alex_joni> I think all 3 should cover any possible joint/world jogging cases
[18:01:26] <CIA-41> EMC: 03micges 07joints_axes3 * r39daf54a13c7 10/src/emc/usr_intf/axis/scripts/emctop.py: emctop: display proper counts of joint positions and home/limit flags
[18:01:35] <CIA-41> EMC: 03micges 07joints_axes3 * r51ae7de7fee1 10/src/emc/usr_intf/axis/extensions/emcmodule.cc: Use joints count not axes
[19:11:23] <alex_joni> hello
[19:23:00] <micges> hello
[19:31:27] <alex_joni> micges: nice progress
[19:47:42] <alex_joni> hmm.. seems I managed to crash rtapi_app
[20:30:07] <Roguish> woo hoo. got my 16g ssd
[20:30:16] <Roguish> installing ubuntu/emc2
[20:30:27] <SWPadnos> what make/model?
[20:30:42] <Roguish> suppper talent
[20:31:11] <Roguish> ftm16gl25h
[20:32:28] <Roguish> now looking for a fanless power supply
[20:32:57] <SWPadnos> picoPSU
[20:33:53] <Roguish> really? those just looked toooo small
[20:34:13] <SWPadnos> I have the 90W wide input one, and it seems to work fine
[20:34:17] <SWPadnos> they make a 120W
[20:34:59] <Roguish> any ac input?
[20:35:11] <SWPadnos> no
[20:35:40] <SWPadnos> since I have 12V and 24V devices in my enclosure, a DC supply was needed anyway
[20:44:39] <micges> alex_joni: thanks
[21:36:24] <alex_joni> good night all
[23:00:49] <SWPadnos_> SWPadnos_ is now known as SWPadnos