#emc | Logs for 2007-08-15

[00:03:59] <robin_sz> meep?
[00:08:26] <toast> how do machine ways ever come out straight on some of the 4x8 wood routers some of these guys build
[00:09:02] <skunkworks_> strait is relative
[00:09:09] <toast> oh
[00:09:11] <toast> good point
[00:09:21] <toast> and also i see they complain about nonlinear paths a bit
[00:09:28] <toast> i guess it all makes sense
[00:23:13] <robin_sz> on a router striaght is kinda important
[00:23:19] <robin_sz> flat is not so important
[00:23:38] <robin_sz> you just skim the bed with the router and its "perfectly flat"
[00:23:49] <toast> or "perfectly wavy"
[00:23:56] <toast> just like the ways!
[00:23:56] <robin_sz> whatver
[00:24:08] <toast> close enough
[00:24:11] <robin_sz> it matches the ways, so relatively its perfect
[00:24:53] <jmkasunich_> jmkasunich_ is now known as jmkasunich
[01:01:08] <toast> pew pew
[02:49:58] <toast> pew pew pew
[03:19:08] <Skullworks-PGAB> In typical PGAB fashion I tore apart one of the Ametek Servo motors...
[03:20:37] <Skullworks-PGAB> the mountig plate has positions for 4 brush holders - so they do make a 4 brush version - unfourtunately these are only populated with 2
[03:21:52] <Skullworks-PGAB> the lack of cogging is due to a high skew armature design - looks like almost 60 degrees
[03:22:18] <Skullworks-PGAB> 4 permanent magnets
[03:24:50] <Skullworks-PGAB> there is plenty of room to drill & tap the rear cover for any Encoder mounting method
[03:26:34] <Skullworks-PGAB> the 3/16" rear shaft that protrudes out is part of the main armature shaft - not a pressed in addition
[03:27:10] <Skullworks-PGAB> the rear bearing is like a skate bearing with a 8mm I.D.
[03:27:34] <Skullworks-PGAB> Made in USA NSK bearings on both ends
[03:28:05] <Skullworks-PGAB> front shaft is 5/8" dia
[03:29:07] <Skullworks-PGAB> Wiring diagram labels the brown wire as unused - it is a chassis ground inside the motor.
[03:37:26] <Skullworks-PGAB> Servos arrived individually bagged as new old stock.
[03:37:43] <Skullworks-PGAB> Not a bad deal at $32 ea.
[03:38:26] <Skullworks-PGAB> Camtronics sells these ( or a variant of ) for $165 ea.
[03:42:21] <Skullworks-PGAB> http://www.surpluscenter.com/item.asp?UID=2007062621461319&item=10-2351&catname=
[04:10:43] <fenn> whew. typity type type
[04:14:38] <fenn> "premium gold angus beef"
[04:16:06] <fenn> * fenn weights his mailing list post with baited breath - see if we get any biters
[04:32:10] <Skullworks-PGAB> O-word subs - Stack them all up at the top of the file? or at the end?
[05:44:28] <Skullworks-PGAB> I'm guessing at the top.
[05:53:30] <fenn> the new frappr interface is atrocious
[06:59:15] <alex_joni> fenn: I agree
[07:00:24] <fenn> hmm this doesnt work so well; doesnt seem to go to the right line http://cvs.linuxcnc.org/lxr/
[07:00:52] <fenn> for example http://cvs.linuxcnc.org/lxr/ident?i=init_display_window
[07:02:17] <alex_joni> hmmm
[07:02:24] <fenn> thats cool how it shows the last author next to each line
[07:02:46] <alex_joni> yeah, cvsview does that too
[07:03:15] <alex_joni> http://cvs.linuxcnc.org/cvs/emc2/README?annotate=
[07:03:48] <fenn> oh the one i never click on
[07:04:15] <alex_joni> yup.. I discovered it by accident too :P
[07:04:45] <alex_joni> here's some stats on emc2 http://eneas.juve.ro/~juve/stats/
[07:04:56] <alex_joni> built them a while ago for fun.. no interest in automating it so far
[07:05:29] <fenn> what do lines in bold with ! marks mean in annotated mode?
[07:06:00] <fenn> hah 36% paul_c
[07:06:15] <fenn> sed will do that
[07:06:18] <alex_joni> fenn: that's on a branch
[07:06:29] <alex_joni> fenn: and dos2unix ran twice over all files
[07:07:02] <fenn> i think CIA provides similar stats
[07:07:46] <alex_joni> not quite
[07:07:51] <fenn> lemme dig it up
[07:08:08] <alex_joni> http://cia.vc/stats/project/emc
[07:08:45] <alex_joni> the nicest thing imo is http://eneas.juve.ro/~juve/stats/commitscatterauthors.png
[07:09:31] <alex_joni> you can really see who's doing the work there..
[07:10:17] <fenn> oh i was wrong, it was something paul_c had on his machine, not cia
[07:10:42] <alex_joni> yeah, same software
[07:10:46] <fenn> woah i need something like that scatter plot
[07:11:08] <fenn> how did you draw that?
[07:11:18] <alex_joni> cvsstat did
[07:11:22] <alex_joni> I have nfc ;)
[07:11:29] <alex_joni> but you can probably look at the sources
[08:18:09] <fenn> hmm all this java chart stuff is too much bother..
[08:18:27] <fenn> will roll my own from cairo
[08:18:36] <fenn> a big turd ball :D
[08:22:18] <alex_joni> heh
[08:22:32] <alex_joni> fenn: do you happen to know where I can find a 3D model of a human?
[08:30:39] <fenn> for what purpose?
[08:33:51] <fenn> the blender makehuman script does pretty good models, and its parametric
[08:34:16] <anonimasu> morning
[08:34:42] <alex_joni> fenn: I just need a 3D model to put into some simulation software
[08:34:49] <alex_joni> it doesn't need to move or anything
[08:34:58] <fenn> ah
[08:34:58] <alex_joni> basicly a human operator standing upright
[08:35:08] <alex_joni> no textures needed
[08:35:22] <alex_joni> what formats are available as export from blender?
[08:35:34] <anonimasu> morning
[08:35:51] <fenn> quite a lot, with varying levels of support
[08:36:16] <fenn> http://www.blender.org/download/python-scripts/import-export/
[08:40:50] <alex_joni> do you have one running?
[08:41:53] <fenn> alex_joni: http://www.katorlegaz.com/3d_models/human_male/0143/index.php
[08:43:17] <fenn> looks good to me, want me to pose him or anything? what format?
[08:43:28] <alex_joni> ACIS sat if you can ;)
[08:45:01] <fenn> nope
[08:45:31] <fenn> how about obj, dxf, 3ds
[08:46:19] <alex_joni> dxf 3d?
[08:46:24] <fenn> yeah, its just a mesh
[08:46:27] <fenn> like stl
[08:46:31] <fenn> have stl too
[08:46:36] <alex_joni> ok, that'll work
[08:46:50] <alex_joni> let me check for imports in my program
[08:47:08] <alex_joni> 3dm ?
[08:47:39] <alex_joni> but I think dxf I can work with
[08:47:57] <fenn> http://fenn.dyndns.org/pub/irc/tool.png
[08:48:31] <alex_joni> dxf
[08:51:06] <fenn> http://fenn.dyndns.org/pub/irc/tool.dxf
[08:54:20] <alex_joni> let me look how it looks ;)
[08:57:09] <alex_joni> hmm.. it loads ok in autocad.. but it's not a solid, so I can export as sat
[08:57:11] <alex_joni> or stl
[08:58:23] <alex_joni> s/can/can't/
[08:59:34] <fenn> hmm i dunno if its possible to make a solid model from this guy
[09:01:53] <fenn> http://fenn.dyndns.org/pub/irc/tool.stl
[09:08:49] <alex_joni> trying to convince my proggies to import STL now..
[09:09:01] <alex_joni> obviously they all know how to _export_ it.. but importing is too hard :D
[09:55:28] <anonimasu> alex_joni: heh, me & awallin did stl import it's a few hours to implement
[10:09:01] <alex_joni> anonimasu: not if it's binary stl
[10:14:42] <anonimasu> alex_joni: no, but binary stl isnt all that complex either
[10:16:02] <anonimasu> :)
[10:18:22] <alex_joni> I agree
[10:18:32] <alex_joni> just can't find a nice solid model of a human
[10:18:39] <alex_joni> it can be low-poly or whatever
[10:22:12] <fenn> just put some spheres and cylinders together, jeez
[10:22:36] <fenn> lego style
[10:37:56] <alex_joni> managed to stitch him up to solid
[10:48:02] <anonimasu> :)
[11:08:36] <fenn> alex_joni: let's see some proof
[11:36:25] <alex_joni> fenn: coming up
[11:43:28] <alex_joni> hi SWPadnos
[11:43:35] <SWPadnos> hi Alex
[11:46:27] <alex_joni> what's new?
[11:46:38] <SWPadnos> not much
[11:46:43] <alex_joni> coo
[11:46:55] <SWPadnos> we got home from London Monday, and I was damned ill yesterday
[11:47:28] <SWPadnos> I think I'm better now, but I haven't eaten in nearly 48 hours, so that may be contributing some dizziness :)
[11:48:09] <alex_joni> ouch :)
[11:48:13] <alex_joni> I think I should try that oo
[11:48:15] <alex_joni> too
[11:49:08] <SWPadnos> I don't recommend it :)
[11:51:20] <alex_joni> saw a nice welding table (turn/tilt) last week in germany
[11:51:26] <alex_joni> 100kN
[11:58:09] <SWPadnos> saw that for welding cars?
[11:58:13] <SWPadnos> was
[11:58:36] <alex_joni> nope, parts of excavators
[11:58:46] <SWPadnos> ok, even bigger :)
[11:58:45] <alex_joni> that's 10t parts
[11:58:55] <alex_joni> it had a vertical axis of 2m
[11:59:01] <alex_joni> and the turn/tilt mounted on that
[11:59:07] <alex_joni> a HUGE biest
[12:11:23] <Dent> hi people. i have determined maximum speed of the stepper by using Feedrate override slider. after that the stepper loses steps. is it really the maximum speed or should i conjure with INI file?
[12:11:59] <SWPadnos> were you cutting when you tested this, or just moving the machine in air?
[12:12:25] <alex_joni> Dent: I wouldn't set it as high.. you need to leave some headroom
[12:13:04] <Dent> yep, i understand that i should, alex_joni.
[12:13:14] <alex_joni> I did set it like that on my machine, then after some cutting and clogging of the screws I was getting stalls
[12:13:15] <Dent> SWPadnos, no matter
[12:13:36] <alex_joni> Dent: does it lose steps imediately? or after getting to speed?
[12:13:42] <alex_joni> maybe accel settings help it too
[12:15:33] <Dent> yes, yes. all i want is more speed. i know e.g. that max is 25 and for process use 24-23. but i need more, does that mean that i need to get a new driver/hardware?
[12:16:03] <Dent> and nothing can be done with available?
[12:16:15] <SWPadnos> probably. EMC can't make the motors output more power than they're capable of outputting, no matter how good it is :)
[12:16:24] <Dent> ))
[12:16:41] <alex_joni> Dent: what voltage are you driving the steppers with?
[12:16:46] <alex_joni> and what stepper drives?
[12:16:52] <Dent> yep, but i just wanted to know if i missed maybe some parameters in INI or program
[12:17:03] <alex_joni> (for instance switching to 50-60V from 20V will make a HUGE difference)
[12:17:18] <alex_joni> also using microstepped drives with current control will help some too
[12:18:04] <Dent> yes i know that, i only want to know if this is the maximum at the given voltage.
[12:20:47] <Dent> SWPadnos, no, i meant that my driver cannot take maximum of the stepper
[12:40:03] <skunkworks> SWPadnos: how are the projects coming?
[12:40:14] <SWPadnos> slowly, unfortunately
[12:41:10] <skunkworks> technical hurdles? or people problems..
[12:41:24] <SWPadnos> well, the requirements keep changing on one of them
[12:41:39] <SWPadnos> the A/D converters I like aren't available for a few weeks
[12:41:54] <SWPadnos> etc. etc.
[12:42:09] <skunkworks> I would call that 'cutting edge' if the parts you want are not available ;)
[12:42:20] <SWPadnos> heh - they're not new, just unavailable
[12:43:02] <skunkworks> heh
[12:44:38] <alex_joni> they are too good to build up stocks :D
[12:45:16] <SWPadnos> must be. it's a 16-bit, 6-channel, 250 ksamples/sec, simultaneous sampling converter, for $27 or so
[12:45:31] <SWPadnos> with SPI, "quad SPI", or parallel data bus
[12:54:52] <jepler_> jepler_ is now known as jepler
[13:47:38] <slundell> Anyone tried ace converter on linux?
[13:48:34] <skunkworks> I vaugly remember someone using it in wine or such.
[13:48:48] <skunkworks> it is open source - maybe it could be ported.
[13:52:07] <jepler> there have been several reports that it runs OK in wine
[13:52:34] <slundell> Yeah, it probably could be ported. I just want to test it to see wether its worth the effort
[13:53:02] <slundell> wine complains here... some unimplemented function is called
[13:53:08] <jepler> I looked at the source code -- it is very dense and the user interface seemed to be entwined with the guts of the converter
[13:53:25] <jepler> making it difficult to convert to gtk, qt, or whatever linux toolkit you would prefer
[13:55:42] <slundell> OK, i just glanced through the source, and i got the opposite impression. But, i just glanced through it
[13:59:36] <jepler> maybe I'm mistaken -- that would be nice
[14:01:07] <slundell> if anyone have it running under wine i would be glad to know which version of wine they used
[14:23:39] <a-l-p-h-a2> a-l-p-h-a2 is now known as a-l-p-h-a
[14:31:47] <jepler> you don't have to look far to find stepper motors for small mills .. but where do you look online for small servos with encoders, to buy in small quantity?
[14:37:38] <alex_joni> http://ajaxcnc.com/cnc_components.htm
[14:37:42] <alex_joni> not quite cheap though
[14:38:23] <skunkworks> normally you luck out and find them on ebay.. or surplus outlets. If you want new - then I don't know.
[14:38:24] <jepler> -r-------- 1 crhilton develop 3377 Aug 14 17:27 include/RCS/shared_warning_list.h,v
[14:38:27] <jepler> oops
[14:38:46] <alex_joni> but I think JonE has some
[14:38:49] <skunkworks> http://cgi.ebay.com/Dynetic-Servo-Motor-Brushed-48V-DC-3-1A-W-encoder_W0QQitemZ180147279522QQihZ008QQcategoryZ78195QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
[14:38:48] <alex_joni> http://pico-systems.com/japservo.html
[14:39:29] <jepler> alex_joni: yeah, jon_e had those for sale at cnc workshop
[14:39:35] <alex_joni> too small?
[14:40:22] <alex_joni> seems pretty cheap at the price (including encoder)
[14:40:46] <jepler> yeah it seems like a good price
[14:41:36] <alex_joni> depends what you want to drive I guess..
[14:41:46] <alex_joni> 58 oz-in might be too weak
[14:45:36] <slundell> got ace to work with wine-0.9.29
[14:47:46] <skunkworks> expensive http://cgi.ebay.com/Servo-Motor-and-Encoder-Pittman-Robotic-NEW_W0QQitemZ270093528815QQihZ017QQcategoryZ78195QQrdZ1QQssPageNameZWD1VQQcmdZViewItem
[15:01:12] <alex_joni> bbl
[15:02:29] <SWPadnos> jepler, how much power would you want from these sevo motors?
[15:02:35] <SWPadnos> servo
[15:05:51] <jepler> SWPadnos: it was more an idle question -- I'm not buying a servo motor today
[15:05:55] <SWPadnos> ok
[15:06:17] <jepler> for a "sherline size" machine -- the ones that people try to run with steppers 200 oz-in and smaller
[15:06:35] <SWPadnos> I have about 15 pancake-style motors, a lot like the ones JonE has. they have 500-cycle encoders with index
[15:06:45] <SWPadnos> I wasn't sure if you wanted any of them :)
[15:08:04] <jepler> sure -- when my birthday comes, and you're also shipping me the new parport mesa board as a gift, put a half dozen of those in too
[15:08:10] <jepler> unfortunately that's not till april :(
[15:08:44] <SWPadnos> I guess you're out of luck until then, then :)
[15:25:36] <awallin> anyone have a CO2 cutting system? what's the best resolution people get from these? would like to cut some plastic film with 50um or 20um resolution
[15:32:39] <steves_logging> steves_logging is now known as steve_stallings
[15:52:38] <steve_stallings> steve_stallings is now known as steves_logging
[16:38:30] <cradek_> cradek_ is now known as cradek
[16:40:47] <jepler> hi cradek
[16:41:03] <cradek> hi
[16:41:04] <jepler> SWPadnos: I know you found some ribbon-cable-to-screw-terminal boards on ebay. I've had less luck. Any advice on search terms?
[16:41:11] <jepler> cradek: how goes the battle with R2?
[16:41:36] <SWPadnos> hmmm. I think I just searched for "50 breakout"
[16:41:43] <SWPadnos> without quotes, of course
[16:41:43] <cradek> today instead of error 4000, I'm getting error 400, which means the tool table checksum is bad
[16:41:54] <cradek> I got the serial console to work, I can painfully enter a program now
[16:42:15] <cradek> and, I think there's no oil pressure
[16:42:26] <jepler> terrible line editor? or just "buffered mdi"?
[16:42:24] <cradek> so, "fine" I guess
[16:42:32] <cradek> terrible line editor
[16:42:35] <cradek> > ?
[16:42:36] <cradek> ?
[16:42:36] <cradek> >
[16:42:37] <skunkworks> That is a good start.
[16:42:50] <skunkworks> I am excited for you :)
[16:43:00] <cradek> it does run if I put in a program
[16:43:28] <skunkworks> so - you took today off also? ;)
[16:43:30] <cradek> XYZ G00 moves Z last if it's going down, or first if it's going up, which is surprising and interesting
[16:43:47] <skunkworks> That is interesting.
[16:43:56] <cradek> actually I woke up with a killer headache, but didn't think anyone would believe me if I called in sick, so yes I took another vacation day
[16:44:05] <cradek> I intended to go to work today
[16:44:09] <SWPadnos> that's a good way of not breaking tools (unless you're using tools that undercut)
[16:44:11] <skunkworks> makes sense I guess - less apt to run into a vice or somethinhg
[16:44:34] <cradek> it's a good way of breaking tools if you every try to use another machine though
[16:44:37] <cradek> ever
[16:44:44] <SWPadnos> well, that's true
[16:44:50] <jepler> cradek: we had a user who insisted all CNC controls did (something like) that
[16:45:09] <skunkworks> heh
[16:45:14] <jepler> I think we dismissed him as a crank
[16:45:32] <skunkworks> before we laughed and made fun of him..
[16:45:38] <cradek> nah, we just said it's a bad idea, which it still seems like it is
[16:45:51] <SWPadnos> that sounds a lot like the photographer who told us "All professionals use 1/125"
[16:46:39] <skunkworks> what is the oil pressure for? oiling or other uses?
[16:46:41] <jepler> SWPadnos: if it's the guy I'm thinking of, I'm pretty sure he was giving me practical advice
[16:46:54] <cradek> skunkworks: just the way oil
[16:47:28] <cradek> I thought the pump wasn't getting power, but I finally traced enough wiring to find that it only runs when the spindle is on
[16:47:48] <cradek> so it's running but doesn't seem to pump - I'll just take it apart and look for obvious things
[16:47:51] <jepler> SWPadnos: "don't use ultra-short shutter times with flash" was the advice he was trying to give
[16:48:13] <SWPadnos> hmmm. for some reasoni, I don't think so :)
[16:48:16] <SWPadnos> -i
[16:48:32] <jepler> and he was probably right, because when I changed from 1/250 to a longer shutter time I got more uniform exposure from shot to shot
[16:48:39] <jepler> OK, then I didn't listen to him very well :-P
[16:48:43] <SWPadnos> heh
[16:49:11] <archivist> jepler, very true for focal plane shutters as it needs time to open
[16:49:32] <archivist> there is a minimum time
[16:49:34] <jepler> I was using 1/250 and now that I look at the spec for my camera it says "Flash X-Sync: 1/200 sec"
[16:50:22] <SWPadnos> this was a wedding photographer telling a few techies and a commercial photographer (who was charging ~1500/day, about 10 years ago) that there was no reason for our radios to support 1/250 sync
[16:51:21] <jepler> ok -- I thought you were talking about the guy who stopped by, watched a lathe demo, and gave me photography advice at this year's fest
[16:51:28] <SWPadnos> ah - nope
[16:51:27] <archivist> between the lens shutters were faster than focal plane
[16:51:37] <SWPadnos> I think I'm glad I missed that :)
[16:52:06] <SWPadnos> leaf shutters can have faster X-sync, since they always expost the entire film surface
[16:52:10] <SWPadnos> expose
[16:53:23] <archivist> lens shutters are damn hard to clean
[16:53:30] <jepler> when you say "your radios", you mean RF flash triggers?
[16:53:40] <jepler> or something else?
[16:53:57] <SWPadnos> jepler, yes. my old company makes the PocketWizard
[16:55:16] <jepler> hah -- I clicked on a google ad (something I do rarely) and the linked page is 404'd
[16:55:22] <jepler> I hope they're not paying much per click
[16:55:32] <SWPadnos> on a search for Pocketwizard?
[16:55:51] <skunkworks> cradek: itching to convert?
[16:56:04] <jepler> SWPadnos: no, something else
[16:56:11] <SWPadnos> ok, phew
[16:56:37] <SWPadnos> gah - I hate the pocketwizard site. stupid inconsistent flash shit
[16:56:45] <SWPadnos> ahem. excuse me
[16:56:54] <jepler> bbl
[17:09:05] <jepler> huh -- what's the 2P screw terminal for on here? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=160142177485
[17:09:52] <jepler> .. bbl again ..
[17:13:14] <steves_logging> steves_logging is now known as steve_stallings
[17:13:43] <steve_stallings> cradek: the Bridgeport lube pump may have lost its prime if it has been sitting for years
[17:14:04] <steve_stallings> and it only cycles auto every few minutes, so could take a long time to reprime on auto
[17:16:26] <archivist> jepler count the pins on the long screw connectors only 24 ea, the other 2 probably wired power ground
[17:16:54] <cradek> steve_stallings: what is the metal knob thing that looks like a plunger, but doesn't plunge? I can unscrew it ccw, or it turns fairly hard cw
[17:18:18] <cradek> I confirmed the clock motor is running (or at least making what sounds like the right noise)
[17:21:31] <steve_stallings> ah, yours does have the plunger, pull it straight up and it should suck up oil and return slowly under spring pressure
[17:21:37] <steve_stallings> it takes a fair pull
[17:21:53] <cradek> ah ok I didn't try pulling (very hard)
[17:22:04] <cradek> so much I don't know
[17:22:23] <steve_stallings> osmosis is a slow process
[17:23:00] <cradek> there's what appears to be an oil pressure gauge so I assume it should be indicating something if it's all working right
[17:25:05] <steve_stallings> I don't remember an oil pressure guage, but then the one I am familiar with has suffered a few "enhancements"
[17:25:33] <steve_stallings> I do seem to remember an air pressure gauage
[17:25:47] <cradek> yeah this one has both
[17:26:11] <cradek> the air stuff seems to start working around 40psi so i'm running it there
[17:26:42] <cradek> the oil gauge goes up to 120 psi or so! can't imagine it could build up that much pressure
[17:27:29] <steve_stallings> stiff spring and small diameter plunger.... I would expect over 30 psi, but ... whatever
[17:28:01] <steve_stallings> then again, way oil is stiff stuff, so higher pressure is expected
[17:28:07] <cradek> ok
[17:28:36] <steve_stallings> also since the metering orifices are small, don't just fill it with whatever is handy
[17:28:55] <cradek> ok, I'll try to get what it says (there's a label on it)
[17:29:07] <cradek> it's fairly full, who knows if it's the right stuff
[17:30:25] <steve_stallings> OK, RTFM, it says lube pump discharge pressure is 20-60 PSI
[17:30:56] <steve_stallings> there is supposed to be a low oil switch to inhibit operation
[17:31:23] <skunkworks> cradek: itching to convert?
[17:31:25] <steve_stallings> cycle time on plunger is 27.7 minutes
[17:31:55] <cradek> skunkworks: yes...
[17:32:09] <cradek> steve_stallings: ok, I did see some kind of sensor, didn't know if it was level or pressure
[17:32:14] <steve_stallings> you are instructed to pull the plunger "several times" on initial startup or after running out of oil
[17:32:28] <cradek> ok that I can sure try, hope it works
[17:32:58] <SWPadnos> it should take 10-20 seconds to return, if it's like the manual Bijur units
[17:33:17] <SWPadnos> (unless mine's broken :) )
[17:33:35] <steve_stallings> they list several lubes, the two that I still remember seeing in todays catalogs are Mobil Vactra #2 and Shell Tonna 68
[17:34:14] <steve_stallings> yes the plunger return is slow, if it returns in under 10 seconds, suspect a leak somewhere
[17:35:00] <cradek> I'll go try...
[17:39:31] <jlmjvm> swpadnos: Im having a problem with some ground noise making my g203v pulse slightly when i turn on spindle or coolant
[17:39:46] <SWPadnos> jlmjvm, uh - bummer
[17:40:36] <jlmjvm> they are manual switches,not running through relays or breakout board
[17:40:41] <jlmjvm> yes bummer
[17:40:46] <SWPadnos> it
[17:41:18] <SWPadnos> noise doesn't care if it's controlled manually or electronically :)
[17:41:41] <jlmjvm> will a ground rod help
[17:41:59] <SWPadnos> that depends on how things are grounded now
[17:42:24] <jlmjvm> through fuse box
[17:42:29] <SWPadnos> ?
[17:42:40] <SWPadnos> like, using 3-prong line cords?
[17:42:48] <jlmjvm> yes
[17:43:18] <SWPadnos> are you using a parallel port for step output?
[17:47:13] <jlmjvm> yes,parallel port
[17:48:09] <jlmjvm> the noise only affects 1 drive,the 203v,the g 201,s are unaffected
[17:48:29] <SWPadnos> I think the 203v has a lower current requirement for the step/dir inputs
[17:48:37] <SWPadnos> like 3 mA instead of 15
[17:48:55] <jlmjvm> but as so often the case im going to have to be able to use the new drives
[17:49:16] <jlmjvm> that may be the case
[17:49:21] <SWPadnos> what kind of breakout board do you have on the aprallel port?
[17:50:02] <jlmjvm> 1 from cnc4pc,c10 i think,lemmee check
[17:50:24] <jlmjvm> can a crappy breakout board let this happen?
[17:50:52] <SWPadnos> it's a matter of grounding and shielding, I think
[17:51:00] <jlmjvm> let me rephrase,a faulty breakout board
[17:51:19] <SWPadnos> could be, but I'll bet it's just bad grounding/shielding
[17:51:49] <SWPadnos> you cuold try swapping the 203v with one of the 201's, and see if the problem moves with the drive or stays with the specific parport pin
[17:53:29] <jlmjvm> can do that
[17:53:31] <steve_stallings> The G203V has a much lower current requirement on the step and direction inputs and would likely respond to noise that a G201 would ignore.
[17:54:13] <jlmjvm> sounds like i need to clean up my act,lol
[17:54:31] <jlmjvm> i been trying to get this fixed since last week
[17:54:55] <SWPadnos> I think the general recommendation is to use shielded cable from the PC to the geckos, and only ground the shield at the PC end (not at both ends)
[17:55:37] <jlmjvm> motor cable?
[17:55:43] <jlmjvm> or paraport
[17:55:56] <SWPadnos> no, step/direction cable from parallel port breakout to gecko
[17:56:30] <jlmjvm> just have wires on that
[17:56:40] <SWPadnos> those should be shielded
[17:56:56] <jlmjvm> i have some shielded i can use
[17:58:35] <jlmjvm> lemmee try that right quick
[17:58:44] <SWPadnos> okie dokie
[17:59:11] <skunkworks> grounding issues are a pain.
[17:59:20] <jlmjvm> say ground the shield to the breakout board ground
[17:59:27] <SWPadnos> yep
[17:59:36] <jlmjvm> not the drain
[17:59:48] <skunkworks> actually all the gounds should be at the same point.
[18:00:05] <skunkworks> but it depends on how anal you are
[18:00:14] <SWPadnos> I think the drain wire and foil shield can both be grounded
[18:00:26] <SWPadnos> I'm not sure where that matters, to be honest
[18:00:34] <jlmjvm> k,brb
[18:15:22] <skunkworks> SWPadnos: did you see this? http://www.youtube.com/watch?v=dKz81fY1OjY
[18:23:04] <lerneaen_hydra> skunkworks: sweet, what's the maximum speed?
[18:23:36] <jlmjvm> swpadnos:still doing the same thing
[18:24:39] <jlmjvm> i thought that would do it
[18:25:48] <jlmjvm> gonna put it on some different pins
[18:28:43] <SWPadnos> jlmjvm, you should also look at grounding of the power supply to the breakout board. that shouldn't be connected to the ground of the motor power supply
[18:35:45] <skunkworks> lerneaen_hydra: 120ipm so far.
[18:35:45] <lerneaen_hydra> 3000mm/min, not bad
[18:35:45] <skunkworks> that is using the existing 6 wire steppers as 4 wire.