#emc-devel | Logs for 2009-05-16

[13:33:28] <CIA-67> EMC: 03jepler 07TRUNK * 10emc2/src/po/pl.po: update from micges
[14:55:30] <cradek> http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/catid,21
[14:55:36] <cradek> dangit
[14:55:46] <cradek> http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/catid,21/id,221/lang,en/#221
[14:56:01] <cradek> Arto's complaint here has nothing to do with path following - it is a display artifact only
[14:57:15] <cradek> AXIS draws the backplot very slightly "above" the preview lines so it "covers" them. In perspective, the viewer is not really "above" the preview anymore so it doesn't quite look perfect. It's harmless.
[14:57:33] <BigJohnT> ok I didn't know that
[14:58:27] <cradek> if you need an exactly perfect preview-vs-backplot, you have to look at one of the orthographic views.
[14:59:53] <BigJohnT> thanks
[15:00:15] <cradek> sure
[15:01:00] <cradek> bbl
[15:18:16] <lerman> Is anyone driving to Fest from the East Coast?
[15:20:35] <jepler> luckily for me, I start substantially closer than that
[15:21:18] <jepler> steve stallings is in va, and I think he's coming to fest
[15:21:23] <jepler> that's the closest I know of
[15:22:21] <lerman> I just checked the price of airfare and am not a happy camper. If I had booked earlier it would be around $200. Now it's over $400.
[15:23:17] <jepler> ugh
[15:24:13] <CIA-67> EMC: 03bigjohnt 07TRUNK * 10emc2/docs/src/hal/pyvcp.lyx: add info on stand alone pyvcp panels and fix some markups
[15:27:30] <jepler> lerman: other thing I know is that jmk is flying into kansas city and driving a car from there .. might be a better fare if somehow you could ride with him from kc
[15:28:37] <lerman> Thanks. Let me check those fares.
[15:29:14] <steves_logging> steves_logging is now known as steve_stallings
[15:29:39] <steve_stallings> steve is flying out, riding back with Matt, and he go his ticket over a week ago
[15:31:06] <SWPadnos> no, Steve is (probably) flying out Saturday, then flying back Wednesday
[15:31:28] <steve_stallings> notice I said steve not Steve
[15:31:40] <steve_stallings> 8-)
[15:31:48] <SWPadnos> oh, right ;)
[15:32:58] <jepler> oops, sorry for passing along misinformation
[15:35:08] <steve_stallings> ok, how about some advice for a newbie... I am hoping learn enough at the Fest this year to get into light duty EMC development, like HAL setup, COMP builds, and run in place
[15:35:25] <steve_stallings> ... so what should I download onto my laptop while good bandwidth is available?
[15:35:55] <jepler> what do you have on your laptop so far?
[15:36:12] <SWPadnos> apt-get build-dep emc2 and apt-get emc2-dev are all you really need
[15:36:41] <SWPadnos> there's more if you want to compile modbus stuff (glib, should probably be part of build-dep at this point)
[15:36:44] <jepler> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Installing_EMC2#On_Ubuntu_with_EMC2_package_already_installed
[15:36:48] <SWPadnos> and maybe more for documentation
[15:36:48] <jepler> Use apt-get to install additional packages required to rebuild emc2 from source:
[15:36:51] <jepler> sudo apt-get build-dep emc2
[15:36:53] <jepler> sudo apt-get install build-essential
[15:37:00] <SWPadnos> cvs
[15:37:02] <jepler> SWPadnos: yes as far as I know it's in build dep
[15:37:22] <SWPadnos> hmmm. ok. there seem to have been a rash of complaints lately
[15:37:25] <SWPadnos> (like 2)
[15:37:28] <jepler> (if it's not, it's a bug since emc will FTBFS)
[15:37:53] <steve_stallings> what about Python, lyx etc. covered by dependencies?
[15:38:08] <SWPadnos> right - you recently made a change to the configure error regarding modbus
[15:38:12] <jepler> yes -- you will be astounded by the number of packages that the step "apt-get build-dep emc2" installs
[15:38:15] <SWPadnos> python is installed by default
[15:38:32] <steve_stallings> ok, thanks
[15:39:46] <SWPadnos> note that cvs is not installed automatically
[15:40:41] <steve_stallings> I will try to get around to setting stuff up this weekend and probably ask for more assistance, like cvs install
[15:41:27] <SWPadnos> sudo apt-get cvs
[15:41:28] <SWPadnos> :)
[15:42:13] <SWPadnos> for a lot of packages, if you run a command you think should be there but isn't, the error message you get will tell you what package to install
[16:01:20] <steve_stallings> hi Matt! where are you?
[16:09:23] <mshaver> Ann Arbor in the office
[16:09:49] <mshaver> trying to get a thing called Open Embedded up on my PC
[16:10:08] <mshaver> to try to make software for the beagle board
[16:10:34] <mshaver> and stuff...
[16:13:13] <mshaver> hey steve! I want (I think) a usenet feed. Giganews? Newsguy? Any public servers that aren't slow as molasses?
[16:13:31] <steve_stallings> ok, just wondering if you were on the road yet
[16:14:28] <mshaver> 14 hours from here - get to the hotel on the evening of the 20th - means leave Tues morn at the latest
[16:15:18] <steve_stallings> I am due into Wichitaw airport 10PM Friday
[16:16:18] <steve_stallings> trying to figure out how much stuff I want to UPS out there
[16:16:27] <mshaver> flight #? I can go pick you up. It looks on the map like Stuart's shop is practically at the airport.
[16:16:58] <steve_stallings> fight 687 from Atlanta
[16:17:23] <steve_stallings> opps.... AirTrans
[16:17:48] <mshaver> OK
[16:19:48] <steve_stallings> dang, I hate it when I read back and see my own typos
[16:20:11] <mshaver> I would say don't go too heavy on the UPS stuff. I'm thinking a computer and some of your boards. Any maybe some hookup wire type stuff. And a mill. And a rework station and tooling for the mill. That's about it I guess!
[16:20:29] <steve_stallings> and a mill?????
[16:21:06] <mshaver> Not too big. Nothing bigger than a Bridgeport. Don't go overboard!
[16:21:22] <mshaver> :)
[16:21:40] <steve_stallings> I was thinking just one box with a one axis stepper slide, some books, docking station for the laptop, a couple of my boards
[16:22:12] <mshaver> Seriously, I'm hoping this meeting is more intellectual vs. material.
[16:22:13] <steve_stallings> maybe it can go as luggage
[16:22:47] <mshaver> Yep. Your list there looks about right. I didn't even bring a scope.
[16:23:34] <steve_stallings> oh, scope, yea that would be good, I have an old Fluke scopemeter that sometimes works
[16:23:58] <mshaver> I was actually thinking that the stepper on your "1001 Electronic Projects" board might be enough.
[16:25:49] <mshaver> Although a small slideway would be nice too. I'm thinking that Chris & Jeff may bring their stuff as they are relatively close by.
[16:26:36] <steve_stallings> I do plan to take the PMDX-112 test board, and it can drive the single axis slide, same one I had at last fest as part of the digitizing camera rig
[16:27:01] <mshaver> That'll be just fine!
[16:27:20] <steve_stallings> plan to rig some limit switches on it for testing
[16:28:25] <mshaver> That's a really good idea too. Does it have an encoder on it? Handwheel or on the motor?
[16:30:54] <steve_stallings> no, but I can bring an MPG
[16:31:36] <steve_stallings> for that matter, the PMDX-112 has a simple MPG and supports the tiny servo motor with an encoder
[16:33:11] <steve_stallings> we can try to make a HAL component to run the H bridge via parallel prot and control the servo
[16:33:27] <mshaver> I think the 112 is probably enough to keep us busy!
[16:33:56] <steve_stallings> Stuart also has one, so there should be two there
[16:34:32] <SWPadnos> steve_stallings, I think the up/down mode of stepgen will do that directly
[16:34:39] <SWPadnos> H-bridge control, that is
[16:34:57] <SWPadnos> skunkworks is using it for his large drive I believe
[16:35:51] <steve_stallings> neat, wonder if I can find a tiny slide to put the tiny servo motor on?
[16:37:47] <SWPadnos> yay! my $0.12 LED replacement bulb works
[16:38:00] <SWPadnos> (in an Allen Bradley 800M switch)
[16:39:28] <steve_stallings> but it will void the warranty
[16:39:40] <mshaver> steve_stallings: how about a floppy drive leadscrew
[16:40:13] <mshaver> if they still have leadscrews...
[16:40:17] <SWPadnos> steve_stallings, I think the warrantee was voided some time before it was thrown out and "recycled" :)
[16:40:44] <SWPadnos> mshaver, if you can still find a floppy drive
[16:41:06] <steve_stallings> I think the lead screw is just an extension of the stepper shaft
[16:41:22] <mshaver> SWPadnos: I still have 8" drives around...
[16:41:31] <SWPadnos> heh
[16:41:47] <steve_stallings> but on the good side, a floppy would already have a home switch
[16:41:49] <mshaver> steve_stallings: I think you're right come to think of it.
[16:42:14] <cradek> the floppies I've seen just mash the head one direction for a while and then call it homed
[16:42:39] <cradek> that's the grinding noise they make when they start up
[16:42:44] <steve_stallings> oh, I a thinking of much older ones....
[16:42:48] <cradek> oh ok
[16:43:24] <steve_stallings> now that you mention it, mashing is how my very expensive old photoplotter homed the focus axix
[16:51:32] <cradek> [AXIS_0] HOME_BY_MASHING=1
[16:54:58] <SWPadnos> [TRAJ]MONSTER_MASH=1
[16:55:14] <mshaver> Actually, if HOME_BY_MASHING is other than zero, then that's the signed float distance in machine units that the axis is driven to home it.
[16:56:27] <SWPadnos> that sounds like an - um- good idea
[16:57:08] <CIA-67> EMC: 03bigjohnt 07TRUNK * 10emc2/docs/src/hal/pyvcp.lyx: a few more markup fixes
[17:00:17] <steve_stallings> actually, providing for this method of homing stepper might not be such a silly idea
[17:01:25] <mshaver> It's applicable to some axis types. Although I was trying to play off of Chris' joke!
[17:02:20] <lerman> I have a flight to Fest arriving on Sunday and leaving on Thursday for $277. What hotel are people staying at? Is it within walking distance to Fest?
[17:02:21] <BigJohnT> steve_stallings: look up 8381K27 at mcmaster carr and see if that slide is small enough
[17:03:13] <cradek> lerman: I don't think any are within easy walking distance
[17:03:33] <cradek> also I think it's a pedestrian-hostile area
[17:04:08] <lerman> Last time I googled, there was one that was a short walk, I thought.
[17:04:31] <cradek> oh, I could be wrong then.
[17:05:05] <cradek> the days inn where I've stayed a couple times was 2? 3? miles
[17:05:25] <lerman> That assumes google maps has the correct location.
[17:05:40] <cradek> I don't know where people are staying - several different places I think.
[17:07:13] <steve_stallings> I think Matt has us booked for the Western Holiday that Stuart recommended
[17:08:24] <mshaver> Yep.
[17:08:31] <lerman> Google Maps shows a Hampton Inn 1.3 miles North of Stuart.
[17:09:34] <lerman> Sunflower Lodge No 86 is .8 miles East.
[17:09:53] <mshaver> Western Holiday - $270 for 5/20 thru 5/27 - double occupancy
[17:10:08] <cradek> will google maps generate walking directions?
[17:10:29] <cradek> you could (mayyyybe) get some idea which is better for pedestrians
[17:11:55] <SWPadnos> it does have a "walking" option
[17:12:01] <SWPadnos> as well as public transportation
[17:12:04] <steve_stallings> lerman: the McMaster item is just the slide rail, no screw etc., I will persue the floppy idea and also look around among my junk collection
[17:12:11] <CIA-67> EMC: 03bigjohnt 07v2_3_branch * 10emc2/docs/src/hal/pyvcp.lyx: add info on stand alone pyvcp panels and fix some markups
[17:12:13] <SWPadnos> I think all the hotels are a mile or more from MPM
[17:12:18] <SWPadnos> some several miles
[17:12:34] <cradek> SWPadnos: see above :-)
[17:12:42] <SWPadnos> ok :)
[17:14:09] <steve_stallings> oops, my slide reply should have been directed to BigJohnT
[17:14:57] <SWPadnos> lerman, what time do you arrive/leave?
[17:15:00] <BigJohnT> what are you making?
[17:15:18] <SWPadnos> oh - that's a day off for me on both ends. nevermind :)
[17:16:23] <lerman> Arrive: 1:15 PM on Sunday (May 24)
[17:16:24] <lerman> Leave: 7:15 AM on Thursday (May 28)
[17:17:42] <SWPadnos> I can probably pick you up at the ariport on Sunday
[17:17:50] <SWPadnos> or the airport, whichever is wasier ;)
[17:18:17] <lerman> How much does a car rental go for in Wichita?
[17:18:30] <SWPadnos> hmmm. I don't remember
[17:18:39] <SWPadnos> I think it was ~$30/day
[17:19:04] <SWPadnos> oh, $22.60/day I guess
[17:19:25] <cradek> I think a call to the shop during any daytime hours would secure someone a quick ride from the airport...
[17:19:39] <SWPadnos> yeah, it's only 10-15 minutes
[17:19:49] <SWPadnos> unless it's lunchtime :)
[17:19:51] <CIA-67> EMC: 03jepler 07TRUNK * 10emc2/debian/ (configure control.in):
[17:19:51] <CIA-67> EMC: try to minimize doc-related build dependencies
[17:19:51] <CIA-67> EMC: (this probably breaks dapper, which is pre-texlive, but we've already given up
[17:19:51] <CIA-67> EMC: on it in TRUNK)
[17:21:10] <cradek> some of us have previously shared cell phone numbers - yell if you want mine
[17:21:22] <lerman> Avis is quoting base rates of 266 for the four days.
[17:21:36] <lerman> I'll skip the car.
[17:21:40] <cradek> (although I'll be relatively carless)
[17:21:40] <steve_stallings> BigJohnT: just something to play with as an axis using a servo driven by software PWM into an H bridge, small is better
[17:22:23] <cradek> steve_stallings: mill a slot in a block, tap a 1/4-20 hole in a piece of square to ride in it?
[17:22:30] <lerman> SWP: Where are you staying?
[17:22:32] <BigJohnT> got an old ink jet printer? you might find a nice linear rail in it :)
[17:23:11] <steve_stallings> lots of prospects, too little time, the closer to complete the better, hence the floppy idea
[17:23:40] <cradek> true, even the simplest setup would take an entire evening to make (always does)
[17:36:04] <steve_stallings> oh well, time to harvest the hay, got past the cut the grass stage weeks ago, nothing but rain here.....
[17:36:20] <steve_stallings> steve_stallings is now known as steves_logging
[19:45:47] <BigJohnT_> BigJohnT_ is now known as BigJohnT
[20:32:47] <CIA-67> EMC: 03bigjohnt 07TRUNK * 10emc2/docs/src/hal/images/ (ptest-final.png ptest.png): add images
[20:35:05] <CIA-67> EMC: 03bigjohnt 07TRUNK * 10emc2/docs/src/hal/pyvcp_examples.lyx: add pyvcp parallel port tester example
[20:43:51] <CIA-67> EMC: 03bigjohnt 07v2_3_branch * 10emc2/docs/src/hal/images/ (ptest-final.png ptest.png): add images
[20:45:18] <CIA-67> EMC: 03bigjohnt 07v2_3_branch * 10emc2/docs/src/hal/pyvcp_examples.lyx: add pyvcp parallel port tester example
[21:11:07] <CIA-67> EMC: 03bigjohnt 07TRUNK * 10emc2/docs/src/hal/pyvcp_examples.lyx: markup fixes
[21:20:05] <CIA-67> EMC: 03bigjohnt 07v2_3_branch * 10emc2/docs/src/hal/pyvcp_examples.lyx: markup fixes