#emc-devel | Logs for 2007-10-04

[03:30:18] <SWPadnos> hey cradek or jepler, can you correct the spelling of my name on the CVS server?
[03:31:54] <SWPadnos> weird. it was correct for a long time, then wrong from 1/16/2007 through 1/21/07, then right until 9/22/07 then wrong until now
[03:32:23] <SWPadnos> err - that was supposed to be 9/9/07 that it went wrong again
[03:33:48] <cradek> oh I bet I know how that happened, but if I told you I'd have to ... well you don't want to know
[03:34:14] <SWPadnos> yeah, we wouldn't want that to happen
[03:36:00] <cradek> fixed
[03:38:10] <SWPadnos> thanks
[03:38:28] <SWPadnos> I'm a little surprised it took me so long to notice. that extra little i is hard to spot :)
[12:39:03] <jepler> SWPadnos: https://mail.rtai.org/pipermail/rtai/2007-October/017944.html
[14:51:18] <skunkworks> logger_dev: bookmark
[14:51:18] <skunkworks> Just this once .. here's the log: http://www.linuxcnc.org/irc/irc.freenode.net:6667/emcdevel/2007-10-04.txt
[15:25:39] <SWPadnos> jepler, thanks!
[16:25:54] <SWPadnos> hmmm. you know, it would be really cool to be able to "compile" a HAL setup into a single module
[16:26:31] <jepler> you think it would improve efficiency or something?
[16:26:44] <SWPadnos> well, maybe
[16:26:52] <jepler> or you have some other advantage in mind?
[16:27:31] <SWPadnos> no, I just popped open the thc.hal file in the plasma-thc config, and I thought it would be nice to have a single module instead of 500 lines of loadrt / linksp / ...
[16:28:17] <SWPadnos> also, Bill's note in 3mc-board got me thinking about other applications of HAL
[16:28:21] <SWPadnos> emc-board, that is
[16:29:11] <jepler> yes I figured
[16:37:00] <cradek> ... but if spindle-speed-out is not hooked to anything, ...
[16:37:11] <SWPadnos> heh
[16:38:04] <cradek> the bridgeport shows the S word on the display and then the user has to push increase/decrease until the pointer shows about the right number on the varispeed pulleys
[16:38:20] <SWPadnos> that sounds like the best way to do it!
[16:38:29] <cradek> mehhh
[16:38:43] <cradek> it's goofy, maybe I can improve it
[16:39:17] <SWPadnos> stick a solenoid on the buttons, and put a PID loop/freqgen on it
[16:40:17] <cradek> the other problem is it's air powered (but already electrically activated air switches)
[16:40:42] <SWPadnos> hmmm. it seems that a small DC servo, or a stepper, might be a better idea there
[16:40:46] <cradek> ideally it will eventually run on single phase and no air
[16:41:44] <cradek> the brake was air too (I put a lever on it so I can use it when changing tools)
[16:42:33] <cradek> fortunately that's all it needs air for
[16:43:02] <cradek> right now I hook up the air when I want to change the spindle speed, yuck
[16:43:03] <SWPadnos> strange for it to have an air brake
[16:43:29] <SWPadnos> ah, a brake on the speed setting motor
[16:43:29] <SWPadnos> ?
[16:44:01] <cradek> no, it has normal brake pads - but you have to pull the lever pretty hard to brake, and an air solenoid is the easiest way to do that I suppose
[16:44:09] <SWPadnos> ah, ok
[16:44:42] <cradek> the air solenoid turned an eccentric that pushed out the brake pads to contact a drum on the bottom of the varispeed pulley
[18:48:10] <SWPadnos> jepler, I emailed that professor about the analog I/O stuff. thanks again for the link
[18:51:15] <jepler> SWPadnos: sure thing
[18:51:35] <SWPadnos> I may end up doing some sort of degree program there :)
[18:51:54] <SWPadnos> or here/there - not sure I can move to Germany at the moment ;)
[18:55:27] <jepler> move to germany? sounds great to me!
[18:56:15] <SWPadnos> heh - yeah
[18:56:30] <SWPadnos> the university he's at is about 100 miles from Gottingen
[18:59:47] <jepler> that's where your sister lives?
[19:01:02] <SWPadnos> yep
[19:01:28] <SWPadnos> do you remember the name of the main train station there? (it doesn't seem to be Gottingen hbf)
[19:03:26] <SWPadnos> well that was stupid. I had to enter "bahnhof gottingen" to get "Gottingen/ZOB" as an option in the drop-down
[19:08:26] <jepler> no I don't...
[19:08:59] <SWPadnos> it's gottingen/ZOB. I looked at the details for a trip from Frankfurt Flughafen to see where the ICE takes you :)
[20:16:30] <alex_joni> good night all
[20:16:47] <SWPadnos> see ya