#linuxcnc | Logs for 2012-03-17

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[00:18:49] <MrTrick|2> I need to test my limit switch inputs, and stepconf doesn't tell me what the state of the pins are. Is there a utility or place in AXIS where it will give me that info?
[00:18:56] MrTrick|2 is now known as MrTrick
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[00:26:34] <Tom_itx> halconfig iirc
[00:29:38] <MrTrick> no such command?
[00:30:05] <MrTrick> ah, in the machine menu
[00:30:32] <Jymmm> no such command == no emc =)
[00:31:50] <MrTrick> as in, no 'halconfig' command is on the bash path. halcmd and a bunch of others, yes.
[00:32:31] <MrTrick> I went to (in AXIS) Machine, HAL Configuration, selected the signals and went to the watch tab.
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[01:07:57] -!- mode/#linuxcnc [+v SWPadnos] by ChanServ
[01:09:54] <Jymmm> hi SWPadnos
[01:10:01] <SWPadnos> ih
[01:10:03] <SWPadnos> err
[01:10:05] <SWPadnos> hi
[01:10:17] <Jymmm> SWPadnos: was thinking about you the other day
[01:10:22] <SWPadnos> awww
[01:10:33] <SWPadnos> that's so sweet
[01:10:46] <Jymmm> Well, I'm just a sweet guy =)
[01:10:50] <SWPadnos> heh
[01:11:01] <Jymmm> SWPadnos: How's things ben treating you?
[01:11:04] <Jymmm> been
[01:11:16] <SWPadnos> pretty well actually
[01:11:29] <Jymmm> Cool, all the same job?
[01:11:38] <SWPadnos> mostly
[01:11:49] <SWPadnos> plus a week on St Maarten
[01:11:56] <Jymmm> Well, glad to hear it, and I take it th checks aren't bouncing either =)
[01:12:03] <SWPadnos> not so far
[01:12:08] <Jymmm> WOOHOO
[01:12:26] <SWPadnos> some day I'll invoice for all that time I've worked since last November too :)
[01:12:42] <SWPadnos> I'm a little behind on the accounting :)
[01:12:49] <Jymmm> Uh oh, better do it soon, taxes and all
[01:13:17] <SWPadnos> that doesn't matter, taxes for my business are done on actuals, not bookings
[01:13:32] <Jymmm> SWPadnos: Sorry so short, gotta go, tak to later if you are around.
[01:13:39] <SWPadnos> see you
[01:13:51] <SWPadnos> tomorrow's Sharon's birthday, so I probably won't be here much
[01:13:58] <Jymmm> np
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[01:57:56] <ssi> quiet tonight
[02:25:14] <Tom_itx> busy working
[02:26:47] <ssi> work harder!
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[05:45:34] <ssi> yawn
[05:49:24] <frysteev_> hi
[05:49:33] <ssi> hi
[05:50:04] <ssi> I got the cabinet gutted
[05:50:15] <ssi> used an engine hoist to get it up on a folding table on its side
[05:50:50] <ssi> it's hooked back up to 220V
[05:51:03] <ssi> was able to confirm some of the main taps off the main transformer
[05:51:03] <frysteev_> ooo
[05:51:11] <frysteev_> it ran on 220?
[05:51:19] <ssi> yea
[05:51:29] <frysteev_> lucky
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[05:51:34] <frysteev_> mine is 480
[05:51:41] <ssi> well mine could be 480
[05:51:49] <ssi> the transformer has primary taps for lots of voltages
[05:52:35] <frysteev_> mine doesnt, so by the time i transformer it, i need 208, 3ph 160amp
[05:53:51] <ssi> suck
[05:54:12] <frysteev_> wire of that size is expensive
[05:54:13] <ssi> wait 160amp?
[05:54:15] <ssi> jesus
[05:54:24] <ssi> what the bloody hell for?
[05:55:01] <ssi> that's 33kw per phase ffs
[05:56:47] <frysteev_> laser wants most of it
[05:56:59] <ssi> IM FIRIN MAH LASER
[05:57:35] <ssi> question
[05:57:50] <frysteev_> ?
[05:57:51] <ssi> should I run the PC power supply off one of the wee little 115v taps off the main transformer in this thing
[05:57:59] <ssi> or should I switch it to 220v input and run it directly off line
[06:00:00] <frysteev_> well,i would run it off of the 115 tap, AND run it through some surge supressor and possibly line conditioner
[06:00:14] <ssi> sounds like work
[06:00:38] <ssi> I dunno if the 115v taps are big enough
[06:01:16] <ssi> yea I guess they probably are
[06:01:33] <ssi> I think they were fused in the original machine at like 3A
[06:01:37] <ssi> which is not quite enough
[06:01:47] <frysteev_> then run it seperatly,
[06:02:07] <frysteev_> you want to clean the power as much as youcan before any electronics
[06:02:14] <frysteev_> mototrs make lots of noise
[06:03:13] <ssi> got any suggestions on line conditioners?
[06:05:10] <frysteev_> honestly, e a good little decent ups
[06:08:37] <ssi> hrm k, I'll have to see what I can come up with
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[06:43:21] <MrTrick> I'm trying to get my axes set up correctly, now that I have physical limit/home switches installed...
[06:44:33] <MrTrick> looking at linuxcnc.org/docs/html/config_stepconf.html, I see that home location and home switch location aren't the same thing...
[06:45:05] <MrTrick> Is it best to set home switch location to be 0 and home location some small positive value? Or some small negative value and 0 respectively?
[06:51:01] <MrTrick> Another question - for the Z axis, is machine 0 typically the upper or the lower end of travel? For a machine with a top limit/home switch, and ~50mm of safe travel, what would the Z axis stepconf values look like? (home location, table travel, home switch location)
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[07:09:47] <Valen> in practise it doesn't really matter
[07:09:54] <Valen> you never work in machine co-ords anyway
[07:10:03] <Valen> once home and limits are set you don't care about them
[07:10:07] <Thetawaves> all the dimensions on this part are off by 0.5mm
[07:10:07] <MrTrick> that's true...
[07:10:11] <Thetawaves> :(
[07:10:39] <Valen> Thetawaves: somebody has their steps per unit wrong perhaps?
[07:11:37] <Thetawaves> i should see a bigger error for longer cuts then eh?
[07:11:55] <MrTrick> tool width compensation?
[07:12:16] <mrsun> backlash ?
[07:13:01] <Thetawaves> i'll investigate all of these
[07:14:04] <Valen> Thetawaves: if its count thats wrong then yeah it'll be longer on long cuts
[07:14:16] <Valen> if its consistant then it'll be tool width of backlash
[07:14:27] <Valen> tool width is easy to rule out if your not using it lol
[07:15:04] <mrsun> ive done some stupid things like use wrong tools etc when milling then pundering why the part was bigger then it should be :P
[07:15:24] <MrTrick> hmm
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[07:15:38] <MrTrick> my Y axes is hitting the limit/home switch after homing.
[07:15:41] <mrsun> i would sugest, check backlash, if none are present check the tool, the one i used last made cuts 0.3mm oversized
[07:15:50] <MrTrick> as in, jogging around allows it to hit the limit switch
[07:16:10] <Valen> home offset and range perhaps?
[07:16:13] <MrTrick> and it freaks out a little and makes me do the override dance to get it back into the right place.
[07:16:32] <MrTrick> Would home switch location -1, travel 0 -> 240 fix that?
[07:17:35] <Valen> i dunno probably
[07:17:44] <Valen> its been too long and i get them all mixed up in my head
[07:18:11] * MrTrick will see
[07:18:38] <MrTrick> hmm... why does axis keep forgetting the set jog speed? And reverting back to 192 mm/minute
[07:21:12] <Valen> you set the jog speed in one of the ini files
[07:21:15] <Valen> its not saved
[07:22:26] <MrTrick> ah, thanks.
[07:22:44] <MrTrick> hurrah - my CNC router now knows where it is.
[07:23:03] * MrTrick will be back with more stupid questions later - thanks for your help.
[07:26:28] <Valen> i wont say theres no such thing as stupid questions
[07:26:31] <Valen> but those wernt
[07:26:34] <Valen> catchya
[07:33:44] <Thetawaves> MrTrick, how do you locate your stock that you have mounted in a vise or what ever
[07:34:40] <Thetawaves> use a jig to place the material in a known location?
[07:35:27] <Thetawaves> do you have the edge of the bed calibrated with your home switches so you can just measure where it's placed?
[07:36:10] <Thetawaves> i still don't understand the process used with home switches
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[07:50:33] <DJ9DJ> moin
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[07:56:38] <ssi> frysteev_: still here?
[07:58:45] <ssi> https://p.twimg.com/AoLGxYvCQAAmktl.jpg:large
[08:00:31] <Thetawaves> nice
[08:01:57] <ssi> it's coming along... slowly but surely :)
[08:02:04] <ssi> I was hoping to have the resolvers hooked up and resolving tonight
[08:02:07] <ssi> but it's not gonna happen
[08:02:09] <ssi> 4am already :/
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[08:46:30] <Thetawaves> can anybody point me to a good set of 1/8" shank micro drill bits?
[08:46:46] <Thetawaves> google is failing me
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[08:50:16] <Valen> try it in metric perhaps?
[08:52:16] <Thetawaves> what do you think about used drill bits on ebay?
[08:52:17] <Thetawaves> http://www.ebay.com/itm/50-Piece-Solid-Carbide-Micro-Drill-Bit-Set-Jewelry-S4A-/160451657792?_trksid=p3284.m263&_trkparms=algo%3DSI%26its%3DI%26itu%3DUCI%252BRTU%252BUA%252BFICS%26otn%3D21%26pmod%3D280841364695%26ps%3D54
[08:52:58] <Thetawaves> These bits were used in the production of military spec. high-tech circuit boards.
[08:52:58] <Thetawaves> These boards have extremely tight tolerances and can easily cost $30k+ an order, so we change our bits well before their usefulness has expired to maximize quality.
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[09:14:18] <elmo40> Thetawaves: if they were of decent size, possibly. the problem with tiny drill bits is you can't sharpen them yourself ;)
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