#linuxcnc | Logs for 2012-09-27

[02:11:43] <DJ9DJ> moin
[02:13:12] <DJ9DJ> morning' Loetmichel
[02:14:01] <Loetmichel> mornin'
[03:46:31] <Loetmichel> soo, dann wollen wir mal dein bombenkrater hier in eine halbwegs ansehnlihce produktionsst├Ątte verwandeln ;-)... bevor der kunde kommt ;-)
[08:35:42] * JT-Shop goes to a baby bottle factory today
[08:36:14] <r00t4rd3d> strip club?
[08:38:35] <jdh> :)
[09:18:26] <jdh> HURRY! Harbor Freight is having a HUGE Sale!
[09:23:12] <jdh> guess everyone is on their way.
[10:27:14] <IchGuckLive> hi all around the world
[10:27:51] <jdh> Hi over there.
[10:28:07] <IchGuckLive> weather is realy bad here
[10:28:21] <jdh> weather is exceptionally good here.
[10:28:38] <IchGuckLive> O.O B)
[10:29:05] <jdh> so good that I'm leaving work at noon and taking friday off :)
[10:29:56] <Vq> It's raining over here. :/
[10:49:42] <skunkworks> we have decent weather for as far as the eye can see...
[10:50:13] <pcw_home> Cold and foggy here, never had much of a summer (I'm afraid our tomatoes will still be green by November)
[10:57:36] <skunkworks> wow - we had a little end rot but other than that the tomatoes did great
[10:57:36] <rigid> ahoy
[10:58:13] <skunkworks> ahoy?
[10:58:20] <pcw_home> TLAPD was the 19th
[10:58:40] <rigid> would it be possible to realize a CNC Mill/Drill with a robot arm like http://hmt.fh-duesseldorf.de/hmt/images/3/33/Movemaster_EX_300px.jpg using linuxCNC?
[10:59:05] <skunkworks> I think I heard that. (tlapd)
[10:59:05] <rigid> skunkworks: ahoy == nautic greeting :)
[10:59:39] <skunkworks> ridid: yes - with abit of work..
[10:59:50] <rigid> what kind of work? coding?
[10:59:57] <rigid> i'm worrying about the inverse kinematics math
[11:00:27] <archivist> is the arm rigid enough for milling
[11:00:32] <skunkworks> I think there is enough kins in linuxcnc that you would probably not have to do coding.. Look at the serial kins
[11:00:32] <rigid> yes
[11:00:42] <rigid> archivist: it's fairly solid
[11:01:01] <archivist> only fairly ?
[11:01:10] <rigid> archivist: that's it http://i.ebayimg.com/00/s/MTYwMFgxMDY2/$T2eC16FHJGQE9noMZIvPBQGYtM7DCw~~60_1.JPG?set_id=880000500F
[11:01:24] <IchGuckLive> rigid: it is poassible
[11:01:32] <rigid> archivist: well, depends on the hole & medium i guess... but it's an industrial robot
[11:01:42] <skunkworks> http://linuxcnc.org/docs/2.5/html/man/man9/genserkins.9.html
[11:01:52] <IchGuckLive> but the Gcode is hard and the movement are not exact aspecial a strait
[11:01:57] <rigid> ahh... cool
[11:01:57] <skunkworks> there is a puma arm example in linuxcnc...
[11:02:17] <rigid> perfect, thanks... i'll look at that
[11:02:47] <rigid> IchGuckLive: Gcode? why not exact? the robot currently moves quite exactly
[11:03:09] <skunkworks> IchGuckLive, actually with working kins - the gcode is pretty easy. And if the arm is calibrated right - is strait and true
[11:03:38] <archivist> because he does not realise that kins fixes it for you
[11:05:12] <IchGuckLive> OK themn i need a better calibration
[11:05:27] <rigid> IchGuckLive: you have the setup running already? :)
[11:05:35] * rigid knows whom to ask then :-P
[11:05:58] <rigid> i have to build a controller first, the original is ancient
[11:06:08] <IchGuckLive> no the carpender has one mounted to the roof and milling just radius by hand
[11:06:43] <skunkworks> http://www.youtube.com/watch?v=80YhX73DuSg&list=UUF4WFwQCdnAdTsviP9QGmyA&index=2&feature=plcp
[11:06:48] <IchGuckLive> the Door frames
[11:06:49] <skunkworks> that is running normal gcode..
[11:08:19] <rigid> skunkworks: lol... my robot is tiny compared to the one in the video :)
[11:10:30] <IchGuckLive> http://www.youtube.com/watch?v=Hv_pKIDEKhs fun at the robot breaktime
[11:15:38] <IchGuckLive> im off work see you from home by
[11:57:30] <archivist> rigid, sometimes the drivers are usable
[11:57:58] <archivist> may just need a pc and interface card
[11:58:28] <rigid> yeah, i'll build one... if the inverse kinematic part is done, i guess I can hack the rest
[12:02:47] <archivist> I would be trying to re use the servo drives as they will already match the motors
[12:05:31] <skunkworks> http://groups.yahoo.com/group/mach1mach2cnc/message/136958
[12:05:42] <skunkworks> I want to scream - linuxcnc already does!!
[12:06:03] <rigid> archivist, i guess that's not necessary... they look quite old and can be replaced by much smaller & efficient ones. The "servos" are actually a simple dc motor+position encoder
[12:07:14] <rigid> skunkworks: then do so?
[12:07:14] <rigid> or at least suggest looking at it? :)
[12:07:14] <skunkworks> buy some cheap amc drives from ebay and use a 5i25+daughter board..
[12:07:19] <skunkworks> eh - that is mach's yahoo group.. probably out of place ;)
[12:07:41] <rigid> well, it's aggressive marketing :)
[12:07:46] <archivist> our entertainment channel :)
[12:09:04] <rigid> but since linuxcnc is open source... you can just raise the bar
[12:09:05] <rigid> or is mach FOSS, too?
[12:09:05] <rigid> skunkworks: i think i'll build the complete board by myself...
[12:09:05] <skunkworks> not in the slightes
[12:09:05] <rigid> i still wonder if I should keep it simple (build my own h-bridges) or use a top-notch modern driver IC
[12:09:05] * skunkworks has done that before... never finished it...
[12:09:11] <archivist> I beg to differ about proper "steps fed MUST equal the encoder counts recieved"
[12:09:31] <rigid> hehe... i didn't say i'll finish it :) there's a good chance it never gets finished ;)
[12:10:09] <archivist> dont mention unfinished projects!
[12:10:17] * archivist twitches
[12:10:21] <cradek> we've only been doing threading like that for 6 years. still pretty cutting-edge (haha) stuff.
[12:12:00] <rigid> but otherwise it shouldn't be more than 5 H-Bridges, MCU + sensor input i guess...
[12:12:00] <rigid> well... MCU rather is SoC nowadays :)
[12:12:00] <rigid> 6 bridges... forgote the gripper
[12:12:14] <archivist> er we do it properly as there is gearing between counts and steps there statement seems to lack variable gearing
[12:14:20] <cradek> Tue Mar 21 01:05:47 2006: ... trajectory planner now supports spindle-synchronized motion.
[12:14:26] <cradek> jeez I've been working on this project a long time
[12:14:26] <skunkworks> linuxcnc will drive h-bridges and read encoders directly (if you have enough i/o.)
[12:14:26] <skunkworks> (and the software encoder counter is fast enough for you.)
[12:14:26] <skunkworks> but interface hardware is really quite cheap..
[12:45:51] <skunkworks> cradek, and we all think you!!!
[12:51:47] <rigid> indeed
[12:52:50] <Jymmm> http://www.qsl.net/w4sat/howlong.htm
[12:53:45] <IchGuckLive> is there a timeline for the new relese of the livecd with 12.04 and 2.52
[12:57:28] <Jymmm> pcw_home: This holster DOES fit the flashlight, http://www.dealextreme.com/p/large-flashlight-holster-1152
[12:57:49] <skunkworks> IchGuckLive, not at the moment.. We are waiting for rtai support of the new kernel
[12:58:52] <IchGuckLive> i see 3.3 with rt22 is a miss in all projects
[12:59:03] <Jymmm> pcw_home: I've tried a few others (even from local retail) and that one actually fits pretty well, a tad loose, but you can even put it in head first to get a tight fit.
[13:00:09] <IchGuckLive> skunkworks: also the ubuntu devels are trying to get all the stuff to the standard kernel
[13:02:24] <pcw_home> I dont really need a holster. It just hang on a hook so I can use if theres a "bump in the night"
[13:02:26] <pcw_home> Amazing battery life and brightness, best flashlight I have ever had
[13:04:19] <Jymmm> pcw_home: Tell me about it. I think it's actually brighter than my 7" diameter 1M candle power spot light
[13:04:53] <Jymmm> pcw_home: The holster is for when stored in glovebox to protect lens or when camping, etc
[13:05:13] <Jymmm> pcw_home: Just difficult to find one that fits
[13:05:21] <pcw_home> Yeah This replaces one of those lead acid monsters quite well
[13:05:46] <Jymmm> pcw_home: I have yet to charge the battery a second time yet.
[13:06:15] <pcw_home> Same here (and I have spares I have not needed)
[13:06:40] <Jymmm> exactly. I need to order a second one.
[13:08:21] <Jymmm> pcw_home: I found a headlamp I'm going to get as well
[13:09:56] <IchGuckLive> have a nice day Where Ever you are IM off BY B)
[13:12:58] <Jymmm> pcw_home: 1xAA (I hate AAA, as AA have 2.5x more mAh), IPX8 rated, 97Lumens High (2Hr)/ 47 Lumen Med (5Hr), 3 Lumen Low (53 Hr) - http://www.fenixlight.com/viewproduct.asp?id=144
[15:17:27] <tom3p> the docs on hal oneshot are a bit misleading, you cannot get an arbitrary width pulse (eg 13 or 127uS ).
[15:17:41] <tom3p> the oneshot pulse width has a minimum size equal to the period of the FP thread its run on (plus a few uS overhead).
[15:17:52] <tom3p> and the FP thread is likely dependent on the base thread, so you write 'setp oneshot.0.width .000013' and get 1mS
[15:17:53] <tom3p> because the FP thread was .ini'd at 1000000! surprise surprise gomer!
[15:18:56] <tom3p> the src code 'imports/includes' the 'period' and uses FP to get the width (period * .000000001)
[15:20:57] <andypugh> I am vaguely surprised that it is an fp function. It could easily have been a base-thread function with width definied in thread periods.
[15:21:23] <tom3p> yeah making it FP is a waste, we oughtta have tiks
[15:22:07] <tom3p> we express the period in tiks in the .ini
[15:22:42] <andypugh> "edge" looks like it can do the same thing.
[15:23:08] <andypugh> In fact, they appear to have redundant functionality.
[15:24:00] <andypugh> (Except no fp in "edge" so it can run in the base thread)
[15:25:49] <tom3p> where does the value 'period' come from in thqat code?? it doesnt have the 'option data internal'
[15:26:54] <tom3p> voodoo
[15:26:57] <andypugh> It's part of the magic of "comp". Look in the "convenience macros" section.
[15:29:06] <andypugh> "FUNCTION" gets macro-substituted to void edge(void *inst, long period) (or soemthing like that) in the generated C code.
[15:30:13] <andypugh> (and pin_name gets macro-substituted to *inst->pin_name too)
[15:30:32] <tom3p> ? you mean the reference to fperiod on page 43 of Hal User Manl?
[15:30:37] <andypugh> Comp is part-genius and part horror :-)
[15:30:57] <andypugh> I don't know, I never read the manuals :-)
[15:31:20] <andypugh> I use the online docs: http://www.linuxcnc.org/docs/html/hal/comp.html#_convenience_macros
[15:31:47] <andypugh> (period is under FUNCTION )
[15:32:30] <tom3p> anyway, the docs oughtta warn users of the granularity
[15:32:50] <tom3p> thx tho ( reading the link )
[15:33:13] <tom3p> (hard on us non-internetted folk )
[15:33:55] <skunkworks> tom3p, how are you talking to us?
[15:33:59] <skunkworks> ;)
[15:34:58] <tom3p> sometimes i walk down to the library
[15:35:01] <andypugh> I would need to create a new branch to push a change to the "oneshot" docs. (and I am in the middle of something). It's a simple matter of editing the .comp file and adding a "description" section though.
[15:35:04] <tom3p> and get inet
[15:35:23] <andypugh> So, how are you managing to be here now?
[15:35:33] <tom3p> at lib now
[15:36:21] <tom3p> when i'm 'here', i'm at lib or got some work & am on road at hotel
[15:39:04] <skunkworks> a nice dish pointed at the lib?
[15:39:18] <andypugh> Cantenna!
[15:40:10] <tom3p> http://pastebin.com/UpWU0Q1b added comment
[15:48:56] <DJ9DJ> gn8
[16:41:08] <r00t4rd3d> This chest cold I have is not playing nice with my smoking habits.
[17:36:09] * JT-Shop-2 had a productive day
[17:48:54] <JT-Shop> for a good laugh http://bbs.homeshopmachinist.net/threads/56029-Electric-cable
[17:55:15] <andypugh> Aproper answer "No, but yes if you look _really_ hard"
[17:55:28] <JT-Shop> yea
[17:56:40] <JT-Shop> going to look at a B&S 6x12 surface grinder tomorrow
[17:57:19] <andypugh> useful things
[17:57:25] <Jymmm> No, but it can become lighter in weight. due to heat disipation and heat rises
[17:57:58] <andypugh> Lighter in weight, but the same mass
[17:58:11] <Jymmm> sure, electrons FIFO
[17:58:20] <r00t4rd3d> so this german store sells booze that was poured through the cleavage of a hot chick - http://www.gspirits.com/
[17:59:28] <andypugh> That's a little strange
[18:00:57] <andypugh> I lost an eBay auction today. It was probably a good buy at the winning price: http://www.ebay.co.uk/itm/180978288137
[18:01:37] <andypugh> (click the little picture for the other pictures)
[18:01:44] <JT-Shop> seems a fair price
[18:02:04] <andypugh> I like the quirky design (and they can swing a huge faceplate)
[18:02:42] <andypugh> And they were made in the town where I was.
[18:06:40] <r00t4rd3d> dont you have a lather already?
[18:07:23] <r00t4rd3d> lathe*
[18:10:04] <andypugh> I do, but it's Chinese and distasteful.
[18:13:10] <r00t4rd3d> you dont think that ebay one has any chinese parts in it?
[18:13:30] <andypugh> Not given that is was made in Huddersfield in about 1950.
[18:13:54] <andypugh> We sold lathes to China then, not them to us.
[18:27:06] <L84Supper> r00t4rd3d, good thing they didn't brand it Buttkrack
[18:31:30] <andypugh> L84Supper: Nearly the name of this (useful) company: http://www.buttkereit.co.uk
[18:35:58] <skunkworks__> so - what is the best website for hosting photos....
[18:36:37] <jdh> moma.org
[18:37:34] <jdh> you want pics up forever, do you want to retain ownership? do you want free?
[18:37:41] <skunkworks__> yes?
[18:37:49] <skunkworks__> (yes and yes)
[18:38:03] <jdh> picasaweb is free, fairly easy
[18:38:23] <skunkworks__> that is the on that keeps coming up...
[18:38:25] <jdh> and is integerated with my camera/phone
[18:39:02] <skunkworks__> I tried to setup one of the free picuture hosting apps for my website but it only works for small sizes.
[18:39:14] <skunkworks__> (about a year ago and I gave up)
[18:41:43] <skunkworks__> imagemagic which is supposed to be accessable isn't.. (and that is far as I got)
[18:43:21] <andypugh> picasa works for me
[18:44:59] <skunkworks__> Picasa is not currently available for your operating system
[18:45:11] <jdh> picasaweb
[18:47:31] <skunkworks__> foundit
[18:47:33] <skunkworks__> found it
[18:56:47] <andypugh> 370 spammers! That is just not funny, and can't even achieve anythign for them.
[18:56:55] <andypugh> Death is too good for them
[18:58:17] <L84Supper> did Danimal disappear?
[18:58:30] <andypugh> I haven't seen him for ages
[18:59:06] <L84Supper> I never heard how all his new project machines turned out
[18:59:30] <r00t4rd3d> skunkworks__, imgur
[19:05:27] <andypugh> JT-Shop: Did you just purge several hundred spammers?
[19:18:41] <L33TG33KG34R> assembling my CNC http://www.ustream.tv/channel/l33tg33kg34r
[19:20:09] <andypugh> Live footage of my build would be dull. I have been at it for 2 years :-)
[19:30:44] <Tom_itx> JT-Shop, did you make any more progress with your standalone cnc project?
[19:49:03] <skunkworks__> stand alone?
[19:49:21] <Tom_L> i think so
[19:49:27] <Tom_L> i forget the details
[20:04:23] <ReadError> hey yall
[20:04:37] <ReadError> cutting CF a 3flute would be preferable to a 2flute right?
[20:19:28] <r00t4rd3d> http://i.imgur.com/o6kL7.jpg
[20:27:28] <r00t4rd3d> betty white
[20:32:12] <skunkworks__> looks a bit like Julia Louis-Dreyfus
[20:38:17] <r00t4rd3d> did you have to google the spelling of her name?
[20:38:53] <skunkworks__> of course
[20:42:54] <ReadError> shes like super rich too
[20:43:34] <ReadError> Julia Louis-Dreyfus. Estimated Net Worth: $2.9 Billion
[20:43:54] <r00t4rd3d> what
[20:44:02] <Tom_itx> try gates if you want super rich
[20:44:30] <jdh> she's not so hot, but she still looks better than him.
[20:44:35] <ReadError> yea too bad im not in to dudes
[20:46:18] <r00t4rd3d> dont you judge him
[20:46:21] <ReadError> http://www.toptenz.net/wp-content/uploads/2011/12/Julia-Louis-Dreyfus-478x700.jpg
[20:46:29] <ReadError> she looks pretty decent there
[20:46:33] <ReadError> prolly all photoshopped
[20:51:16] <jdh> she's 51
[20:51:59] <Tom_itx> you don't photo shop when you're rich, you call your plastic surgeon
[21:43:20] <ReadError> so i asked earlier but couldnt find an answer
[21:43:26] <ReadError> cutting CF a 3flute would be preferable to a 2flute right?
[21:44:57] <Tom_itx> http://www.onsrud.com/plusdocs/Doc/index.html?model.code=FeedSpeeds
[21:47:18] <uw> elaine!
[21:48:30] <ReadError> 3-in-1 might not be the best cutting oil
[21:48:36] <ReadError> but it works good
[21:48:38] <ReadError> and smells great
[21:49:41] <uw> good for a joke
[21:58:36] <ReadError> take that back.
[21:59:57] <uw> i prefer the smell of motor oil
[22:01:39] <ReadError> they should make some redneck fragrances
[22:01:41] <ReadError> gun oil
[22:01:44] <ReadError> motor oil
[22:01:46] <ReadError> wd40
[22:01:52] <ReadError> get larry the cable guy to endorse it
[22:01:55] <ReadError> ...profit
[22:08:25] <uw> thats silly
[22:08:33] <uw> but shut up and take my money
[22:47:56] <tjb1> Hopefully put the last coat of paint on the frame.
[22:48:22] <ReadError> is there a way to ignore speed related gcodes?
[22:48:33] <ReadError> or should i just make a sed script to find/remove
[22:52:15] <tjb1> You should make your quadcopter do it
[22:53:38] <ReadError> ;p
[22:53:47] <ReadError> im actually working on one right now
[22:53:50] <ReadError> good timing ;)
[22:58:50] <tjb1> another one?
[23:13:44] <Thetawaves> would anybody like to go in on a 3 person license of eaglecad?
[23:42:32] <tjb1> Thetawaves: http://1.bp.blogspot.com/-bYwcmlMxsXU/UA_ugRxYU2I/AAAAAAAAEVw/VzWvf9ucU8M/s1600/forever-alone-face.png
[23:42:44] <Thetawaves> lol
[23:46:28] <tjb1> I dont do PCB stuff, sorry.
[23:48:18] <r00t4rd3d> pirate it :D
[23:52:22] <tjb1> Hey JT-Shop
[23:52:55] <r00t4rd3d> highly doubt he is still awake
[23:53:44] <tjb1> I can dream?
[23:53:53] <tjb1> I know you wont know the answer :)
[23:57:13] <tjb1> r00t4rd3d: Look at http://i.imgur.com/Z5aP4l.jpg and http://i.imgur.com/s0gXel.jpg