#emc | Logs for 2008-07-22

[00:16:43] <jepler> and after another hour, I finally got the java client to work
[00:17:32] <jepler> not a useful trace captured, but it is a trace. http://emergent.unpy.net/index.cgi-files/sandbox/logic-analyzer.png
[00:27:09] <lerman> jepler: Does the development kit include tools to develop your own FPGA programs?
[00:32:15] <jepler> lerman: "xilinx webpack" is a free-of-charge development environment for their FPGA chips, including the one on the board I bought for the sump.org logic analyzer.
[00:33:15] <lerman> Thanks. I just bought the last major parts for my interferometer and I'm looking for a cheap interface to it.
[00:34:13] <jepler> lerman: it's a task for FPGA?
[00:34:58] <lerman> Well, not really. All you really need is a 32 bit (or so) up/down counter -- counting at 8 MHz.
[00:35:01] <jepler> oh
[00:35:08] <jepler> that's pretty easy
[00:35:29] <jepler> well if you know fpgas very well
[00:35:52] <lerman> I don't. But it's an opportunity to learn them
[00:37:08] <jepler> this is the company I bought this particular fpga board from: http://digilentinc.com/Products/Catalog.cfm?Nav1=Products&Nav2=Programmable&Cat=Programmable+Logic (primarily because the sump.org logic analyzer was originally written for it) -- if you picked up a fpga board from mesanet.com, though, there's also a chance to use it with emc someday.
[00:39:17] <jepler> a 32-bit up/down counter is simple enough that I imagine it would fit on the rather inexpensive "cmod" boards they have -- you can go down that road for under $30 shipped. unfortunately, most of these gizmos don't directly interface to logic above 3.3v. not sure about the CPLDs specifically.
[00:42:04] <jepler> bbl
[02:16:24] <cradek> jepler: cool!
[03:05:59] <toastyde1th> toastyde1th is now known as toastydeath
[03:34:29] <SWPadnos__> SWPadnos__ is now known as SWPadnos
[04:57:04] <tomp2> jepler: am i seeing 200nS / div on that trace?
[04:57:29] <tomp2> um, 20?
[05:04:07] <tomp2> haha that guy ( fpga logic analyzer) has a 'water wall' ( an automated squirt gun for cats using camera/motion detection )http://www.sump.org/projects/waterwall/archive/
[05:05:49] <tomp2> aw, its just IR, the cam just logs the trespasser
[05:06:35] <tomp2> gnite
[05:40:33] <dave_1> Hmmm! from all the names that show up there must be someone actually on. (?)
[05:44:25] <dave_1> Just as I thought ... no one is admitting anything. ;-)
[07:04:37] <micges> good morning
[07:40:08] <lerman_> lerman_ is now known as lerman
[07:49:17] <pjm_> good morning
[08:13:40] <alex_joni> hi
[08:15:59] <micges> alex_joni: I made dxf filter for emc
[08:16:08] <alex_joni> nice
[08:16:57] <micges> what now?
[08:17:09] <micges> I want to emc have this
[08:18:05] <micges> I don't know design rules for emc build in filters..
[08:27:49] <alex_joni> micges: I'd suggest you put it online somewhere for people to look at it
[08:27:58] <alex_joni> then we can see how we can include it with emc2
[08:28:22] <micges> ok
[09:31:22] <archivist> alex_joni, thnks for answer but Im thread milling with an A axis needs a G code really, my first thought was G92.2 but that just set of the A axis moving at a snails pace
[10:31:07] <alex_joni> archivist: g54 maybe
[10:31:56] <archivist> dunno , will try it
[10:32:12] <archivist> sitting here atm trying various
[10:32:49] <archivist> programable touch off would be the obvious
[10:39:07] <fragalot> *yawn*
[10:40:26] <fragalot> why am I sitting here, designing stuff in alibre, if after i get them i most likely won't stick to those designs anyways >.>
[10:47:46] <archivist> hmm G10 has an L2 in examples but no explanation of the L2
[10:50:46] <fragalot> L2 Used to replace or alter fixture offsets: L2 P# (0, 1- 48) X# Y# Z# A# B#.
[10:51:32] <fragalot> http://www.compumachine.com/Support/Downloads/Fadal/User%20Manual/0030__Sect_3_-_G_Codes.pdf page 51
[11:02:47] <archivist> g54 and up in emc for fixture offsets, they are set by G10 L2 Pn seems a bit of a messy system as it limits fixture qty
[11:04:15] <fragalot> :p
[11:05:02] <fragalot> * fragalot goes hunting for parts he has laying about
[11:05:05] <fragalot> bbl
[11:06:05] <archivist> someone hit 59 and then went 59.1 59.2 59.3 yuk
[11:18:26] <alex_joni> archivist: that was the way it was first implemented
[11:19:09] <alex_joni> http://www.linuxcnc.org/docview/html//gcode_main.html#sub:Coordinate-Systems
[11:19:32] <archivist> g59.1 to a large number would allow much larger fixtures
[11:21:39] <alex_joni> http://www.isd.mel.nist.gov/personnel/kramer/pubs/RS274NGC_3.web/RS274NGC_3TOC.html
[13:52:52] <jnd> interesting, I wondered it #emc is about electromagnetic compatibility :)
[13:52:57] <jnd> if*
[13:56:07] <alex_joni> not really
[13:56:11] <alex_joni> check /topic #emc
[13:59:36] <skunkworks_> Hi alex
[13:59:45] <alex_joni> hi samco
[14:11:11] <skunkworks_> does this make sense? http://pastebin.ca/1079492
[14:11:29] <skunkworks_> or is it somewhat correct? ;)
[14:12:09] <alex_joni> skunkworks_: yup
[14:12:39] <skunkworks_> alex_joni: thanks
[14:44:42] <cradek> what is the gripping tolerance of 5C?
[14:46:07] <dave_1> don't really know but I've heard some pretty horrible examples ... like 10-12 thou
[14:46:37] <jepler> why are crimping tools so expensive? I'd like to make my own wires like these http://www.sparkfun.com/commerce/product_info.php?products_id=8430 but the crimping tool for that style of pin is $900
[14:47:03] <dave_1> jepler ... low volume
[14:47:16] <jepler> dave_1: yeah I am sure that's a big part of it
[14:47:19] <archivist> jand industrial quality
[14:47:42] <dave_1> I've often thought about making my own
[14:48:06] <archivist> pliers in emergency
[14:48:13] <dave_1> 4140 should be good enough
[14:48:27] <jepler> 4140?
[14:48:53] <dave_1> aisi 4140 ... chrome-moly steel ... pretty plain vanilla
[14:49:30] <jepler> archivist: I'm tempted to buy some of the housings and receptacles and try pliers .. I can do that for only pennies plus S&H
[14:50:18] <cradek> dave_1: I see there are sets with 64th sizes
[14:50:57] <dave_1> no problem if your budget allows for it.
[14:50:59] <jepler> my current project would benefit from a few special multi-wire connectors, like 9P female to 8P+1P male or female, or to 9*1P male or female
[14:51:24] <jepler> but not if I have to spend hundreds on a crimp tool
[14:51:46] <dave_1> I tend to live with solder cup
[14:51:56] <cradek> dave_1: nope it doesn't!
[14:52:04] <dave_1> and teflon insulated wire
[14:53:16] <dave_1> credek as I unterstand it 5C holds is just fine if you don't need to reposition the part
[14:53:30] <dave_1> is//
[14:54:54] <archivist> if you push collets too far they bend/break and the work is not straight
[14:55:40] <dave_1> BTW- I've been looking for the docs on mux in the latest HAL manual and can' find it. Am I just blind?
[14:56:10] <jepler> dave_1: in the terminal, type "man mux2" (or 4 or maybe 8)
[14:56:48] <dave_1> OK
[14:56:59] <jepler> online, http://linuxcnc.org/docs/html/man/man9/mux2.9.html or inside http://linuxcnc.org/docs/2.2/EMC2_Manual_Pages.pdf
[14:57:09] <jepler> (I guess mux8 is only in the CVS version, not in 2.2)
[14:57:24] <dave_1> I just need 4
[14:58:36] <dave_1> gotta go look see ya later ...tnx
[15:42:45] <fragalot> http://omploader.org/vbWhu/DSC00780.JPG lawl, my first attempt at making SOMETHING
[15:42:46] <fragalot> :p
[15:43:30] <fragalot> i've got a great workbench, but I can only use that small section infront of the camera, because my parents decided to move the old furniture infront of it >.>
[15:50:16] <fragalot> and yes, it's WAY too small, forgot to cut a piece out of the top stage
[15:50:31] <fenn> what are the plastic 'lego hands'?
[15:51:12] <skunkworks_> I don't think it is 'that' small ;)
[15:51:23] <skunkworks_> fenn: did you see the hexapod on cnczone?
[15:51:48] <fenn> yeah, not impressed
[15:52:04] <skunkworks_> heh
[15:52:13] <skunkworks_> tough crowd... ;)
[15:53:38] <fragalot> skunkworks_: the area it can work on is :p
[15:54:00] <fragalot> fenn: and.. lego hands? where
[15:55:44] <fragalot> need to find some teflon strips to put between the wood & the rails
[16:06:39] <archivist> "lego hands" the plastic clips holding the tube/bar
[16:36:40] <alex_joni> they look like the stuff you use for plumbing
[16:36:43] <alex_joni> to hold pipes
[16:41:28] <jepler> "circular mil"? will there ever come a day when I am not surprised to learn a new (imperial, natch) crazy unit of measurement?
[16:42:07] <archivist> I have a surveying instrumen calibrated in mil
[16:42:19] <jepler> (apparently "kilo circular mils" is the more often used unit -- 1kcmil ~ .5mm2)
[16:42:40] <jepler> "mil" is no surprise, but I hadn't seen "circular mil" (= 1/4 pi mil^2) before
[16:42:46] <archivist> artilery directing
[16:43:41] <cradek> jepler: I ran into that one when trying to figure out wire sizes too
[16:44:18] <dgarr> I remember transformer designers used circular mils in the 70's
[16:44:53] <archivist> * archivist likes thread milling
[16:50:03] <dgarr> threadmilling example: http://youtube.com/watch?v=kJRV0IT0tro
[16:50:39] <archivist> I should video the next attempt
[16:54:08] <cradek> cool. those are some very fine threads.
[17:06:07] <SkinnYPup> dgarr: some nice woodwork you got there on youtube.
[17:10:08] <dgarr> thanks -- wood and emc -- lots of fun
[20:03:07] <fragalot> ah alex_joni is right about those 'lego hands'
[20:03:08] <fragalot> :p
[20:24:29] <alex_joni> he usually is
[20:24:31] <alex_joni> lol
[20:34:48] <alex_joni> hmm.. I've never seen this one: http://www.youtube.com/watch?v=1EYaM4FkASA&feature=related
[20:34:51] <alex_joni> that's great
[20:36:03] <skunkworks_> it is even better in person... ;)
[20:36:13] <alex_joni> I can imagine
[20:36:43] <cradek> heh, cool
[20:36:45] <skunkworks_> * skunkworks_ badgers alex to come next year
[20:39:24] <cradek> haha, it's funny to watch matt in the background, wishing that thing would be quiet
[20:39:44] <skunkworks_> :)
[20:52:35] <fragalot> lol
[20:59:12] <fragalot> gnite
[21:06:41] <alex_joni> heh
[21:07:25] <alex_joni> this is fun: http://www.bash.org/?758379
[21:21:30] <alex_joni> good night all
[21:27:22] <micges> gn
[22:30:49] <pminmo> evening all
[23:19:39] <dmwaters> {global notice} Hi all, We look to be having some routing problems. I'm looking into it now. Thank you for your patience, and thank you for using freenode!
[23:54:50] <dmess> hi all..
[23:55:08] <dmess> rayh you available??