#emc | Logs for 2011-03-06

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[00:00:00] <cvv> cnc something
[00:00:42] <cvv> Do we have iron ore in britian?
[00:01:08] <Tom_itx> cannon balls
[00:01:26] <cvv> we imported them from the french
[00:01:34] <Tom_itx> and send them back?
[00:02:04] <frallzor> the french gave em back again in america :P
[00:03:33] <mikegg> Tom_itx: did you settle on an interface card yet?
[00:03:45] <cvv> we sent them back all right
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[00:03:49] <andypugh> There is a small amount left, but we used up nearly all the commercially-useful reserves
[00:03:54] <cvv> those pesky french
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[00:04:58] <Tom_itx> mikegg no
[00:05:12] <cvv> We actually have nothing in britian
[00:05:15] <Tom_itx> the 7i43 looks good
[00:05:17] <cvv> no real resources
[00:05:32] <cvv> I think we have some coal and granite
[00:05:41] <Tom_itx> do they make a stepper daughterboard for it?
[00:05:55] <Tom_itx> i'm not sure i need one just yet
[00:06:07] <cvv> so we kid on that financial services are a exportable product
[00:06:11] <andypugh> 7i43 is cool.
[00:08:00] <mikegg> yeah, you don't really need a daughter board for step gen
[00:08:50] <andypugh> I have my 7i43 wired direct to the stepper drives.
[00:09:15] <Tom_itx> you like it?
[00:09:21] <andypugh> It goes via a breadboard with headers on, but that is just so I can re-jig the wires if needed.
[00:09:36] <Tom_itx> no isolation board?
[00:09:57] <andypugh> The stepper drivers are opto-isolated inputs, to any more is just silly.
[00:10:31] <Tom_itx> my problem is i know very little about these stepper drivers
[00:10:41] <andypugh> I run a few lines through a ULN2008 to drive relays and the VFD, and have an opto-isolated 0-10V PWM-voltage circuit for spoindle speed too.
[00:11:10] <Tom_itx> does the board come preloaded with any certain configuration?
[00:11:11] <andypugh> To be honest, at $70 I see the 7i43 as a parallel-port protector :-)
[00:11:59] <andypugh> No, you need to choose a firmware from those included with EMC2 which has the required number of stepgens, encoders, PWMs, etc etc etc.
[00:12:28] <andypugh> There is a wizard called pncconf which makes it all a bit easier.
[00:12:30] <Tom_itx> so the mesa stuff comes packaged with emc2?
[00:12:56] <andypugh> It used to, I think you might now need to sudo apt-get install emc-firmware
[00:13:15] <andypugh> But all the drivers are part of the standard EMC2 install
[00:13:32] <Tom_itx> what are all the downloads from the mesa site then?
[00:13:36] <Tom_itx> same stuff?
[00:13:53] <andypugh> Pretty much.
[00:14:03] <andypugh> But a lot of windows and dos stuff too.
[00:14:54] <Tom_itx> mesa just updated their price sheet
[00:15:01] <andypugh> The firmwares you get in the emc-firmware (or possibly emc2-firmware) apt packages are all EMC2-compatible.
[00:15:18] <andypugh> Did the prices go down?
[00:15:43] <Tom_itx> is yours parallel only?
[00:16:09] <andypugh> Mine is USB and parallel, but EMC2 can only use the Parallel port.
[00:16:19] <Tom_itx> 200k gates or 400?
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[00:16:44] <Tom_itx> what do you use the USB for then
[00:16:47] <Tom_itx> ?
[00:16:53] <andypugh> Again, I got the 400k but that was because the 200 was out of stock.
[00:17:08] <Tom_itx> it's 99 now
[00:17:50] <Tom_itx> i need to get some beefier drivers first i think
[00:17:58] <andypugh> There is a fairly good argument for geting the 400k version, as some of the more advanced firmwares don't fit the 200k. This is not a problem for any of the stepper firmwares though, more if you want to use the integrated servo drives etc.
[00:18:22] <frallzor> trivia time, annealing PEHD, can one do it in a regular oven?
[00:18:29] <Tom_itx> i was leaning toward that one anyway.. for the same reasons
[00:18:30] <frallzor> heat and just let it cool in there
[00:18:43] <andypugh> HDPE?
[00:19:04] <frallzor> PEHD then? =P
[00:19:38] <andypugh> http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TXX-49H11JJ-2&_user=10&_coverDate=04%2F30%2F2004&_rdoc=1&_fmt=high&_orig=gateway&_origin=gateway&_sort=d&_docanchor=&view=c&_searchStrId=1666431401&_rerunOrigin=google&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=3e8bff4a723380fe4f8f57cfa79cba35&searchtype=a
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[00:20:43] <andypugh> It seems that the annealing temperatures are well inside the range of a domestic oven, but I would not trust the temperature scale on the front, put a thermocouple in there.
[00:21:08] <frallzor> prolly a bad idea to do it now though
[00:21:11] <frallzor> after machining
[00:21:39] <andypugh> Do it with one, and see if it moves?
[00:21:43] <Jymmm> who keeps wanting to muck with HDPE?
[00:21:55] <Jymmm> and why HDPE?
[00:22:20] <frallzor> easy to machine and durable
[00:22:32] <Jymmm> so are a lot of thermosets
[00:22:46] <frallzor> and its what I got to machine =)
[00:23:03] <andypugh> Delrin is nicer.
[00:23:12] <Jymmm> frallzor: from what? garbage cans?
[00:23:29] <Jymmm> and a LOT easier to fabricte
[00:23:30] <frallzor> from 2 giant blocks
[00:24:05] <Jymmm> Quit wasting time on HDPE and get yourself something useful
[00:24:32] <Jymmm> Hell even PVC is better for fab thatn HDPE
[00:24:57] <Jymmm> theres also ABS (clear, black, white) and PE, PP, etc
[00:25:11] <Jymmm> what are you trying to do anyway?
[00:25:32] <frallzor> models
[00:25:38] <Jymmm> of?
[00:25:43] <andypugh> Gnus
[00:25:44] <frallzor> guns
[00:26:02] <Jymmm> Oh gawd no, not HDPE, would look like shit
[00:26:08] <andypugh> I prefer Gnus
[00:26:17] * Tom_itx feels he just pushed a 'regret' button
[00:26:21] <Jymmm> I prefer munitions =)
[00:26:56] <Jymmm> If you are doing mold injection with HDPE, ok
[00:27:04] <andypugh> Tom_itx: You just ordered something?
[00:27:40] <andypugh> Mesa need a better shopping interface, I think.
[00:28:01] <Tom_itx> no i'm putting xp on this thing
[00:28:07] <Jymmm> I believe expanded ABS culd look much better than hdpe as you can have polished shiny areas and dull flat areas
[00:28:24] <Jymmm> Tom_itx: Say it with me.... virtual machine
[00:29:35] <andypugh> Regret indeed, who installs a 10-year-old OS nowadays?
[00:29:50] <Jymmm> MS-DOS 3.31 bitch!
[00:30:02] <andypugh> Did you also considr CP/M and OS/2 ?
[00:30:20] <Jymmm> I have BOTH
[00:30:37] <Jymmm> OS/2 Warp baby!
[00:31:26] <DaViruz_> an offset printing press at work runs os/2 warp
[00:31:29] <DaViruz_> didn
[00:31:48] <DaViruz_> didn't believe my eyes when i saw the interface computer boot for the first time
[00:31:58] <DaViruz_> isn't that old either, 2003 something
[00:33:10] <Tom_itx> andypugh i still use dos 6.22
[00:35:18] <andypugh> Some people like to sandpaper their testicles too.
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[00:57:20] <andypugh> Right, night all.
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[01:18:01] <Jymmm> andypugh can sandpaper his balls all he wants, I'll stick with MS-DOS instead
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[08:04:45] <Connor> Anyone awake?
[08:04:45] <the_wench> no just us bots, but just ask anyway because Im a clever bot, there is also a chance one of the carbon lifeforms may see and answer too
[08:05:25] <Connor> the_wench: You are a very annoying bot.
[08:09:49] <archivist> should everyone awake reply yes just in case? its an annoying question
[08:10:08] <Connor> :)
[08:10:29] <archivist> the real question works so much better in irc
[08:12:01] <Connor> I installed my slot sensor for end stop and have a LED hooked up doing some testing.. Looks like it's not a simple on/off.. but, varies the intensity of the LED.. That going to be a issue?
[08:13:41] <archivist> the buffer reading it will have a switching point. so will probably be ok, keep ambient light from it so that it is consistent
[08:14:29] <Connor> Ambient light doesn't appear to affect it.. it's varies as it the flag partially comes into the slot.
[08:16:20] <Connor> I've not done any testing with it as far as EMC is concerned.. so, I have no idea how the LPT input is going to react... I'm guessing there is a point that it's just going to jump from high to low...
[08:16:37] <Connor> which probably could be adjusted with a resistor or trim pot.
[08:18:07] <archivist> you could add a schmitt trigger to clean it up and make sure
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[08:20:49] <Connor_CNC> on my EMC machine now.. going to hook this up and see what happens..
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[08:53:22] <Connor_CNC> okay, got it working.. now to config it so it'll auto home.. and.. how can I jog OFF of it when it's in limit ?
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[09:32:06] <Connor_CNC> OKay, so, why I'm homing, why does it throw a Exceeded soft limit ?
[09:32:41] <mhaberler> switch position outside axis limits from ini?
[09:33:26] <Connor_CNC> Dunno.. Was trying to fix it so that 0 was just .1mm in front of the limit switch.
[09:33:57] <Connor_CNC> MIN_LIMIT =0, MAX_LIMIT = 303.8, HOME_OFFSET = -0.1
[09:33:59] <mhaberler> so it does what you told it
[09:34:00] <Connor_CNC> HOME = 0
[09:34:50] <archivist> is the limit also the home switch
[09:34:54] <Connor_CNC> YES
[09:35:00] <Connor_CNC> err. sorry for caps.
[09:36:09] <Connor_CNC> Doesn't look like it causes any issues when it throws the error.. I have it ignoring limits when homing.
[09:36:27] <Connor_CNC> Is there a better way to do it ?
[09:39:38] <archivist> there is mention in the docs somewhere what to set for a single switch, probably set the home coincident with limit
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[10:02:02] <Connor> There is something about shared, but that's not it I don't think.. that's about multiple axis I think??
[10:03:20] <Connor> Wait, no. That's used to prevent homing from starting if one of the shared switches is already closed.. not what I want..
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[12:56:02] <mrsunshine> ough
[12:56:11] <mrsunshine> i need an emergency stop or encoders to indicate fault condition :P
[12:56:16] <mrsunshine> got a nice little hole in my table now :P
[12:56:25] <mrsunshine> all of the sudden blam, it just strated feeding it straight down
[12:57:15] <mrsunshine> and dont know why it did it :/
[12:57:37] <mrsunshine> it just locked the Z axis in its up travel :/
[13:10:38] <mendelbuild> omgh
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[13:40:36] <_abc_> Oh I always wanted to ask: Is there a minimal subset of gcode commands
[13:40:41] <_abc_> which is known to be portable?
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[13:42:29] <archivist> EDocToor, see what others have done http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Case_Studies
[13:44:07] <jthornton> G0 and G1 should be portable
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[13:51:36] <andypugh> I am starting to think about the physical control panel for my milling machine. I anticipate using Touchy.
[13:52:44] <jthornton> cool
[13:53:03] <andypugh> The Hostmot2 firmware I intend to use supports 8 encoders, of which 4 will be used for axes, and one for the spindle. I have enough spare channels to run some manual rotary knobs on software counters, though.
[13:53:53] <andypugh> So, I am thinking of using hostmot2 counters for jogging each axis, and then software ones for spindle overide and feed override. Sound sensible?
[13:54:07] <andypugh> (I have 5 MPG knobs)
[13:55:01] <andypugh> I think I will be using a rotary switch for jog-increment selection.
[13:56:05] <andypugh> However, as the MPG knobs have a press-switch too, perhaps that can be used to cycle through jog-speeds? A
[13:56:25] <andypugh> In fact, any suggestions for good uses of the push-switches on the knobs?
[13:57:51] <jthornton> cycling through jog speeds or enable/disable come to mind
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[13:58:01] <jthornton> in C what does << do?
[13:58:32] <andypugh> bit shift left
[13:58:40] <jthornton> thanks
[13:58:52] <andypugh> (or multiply by two)
[13:59:52] <mhaberler> (provided the underlying datatype can hold the result, otherwise the most-signifcant bit falls off the cliff)
[13:59:54] <jthornton> in this case bit shift seems to fit the line of code is temp = SPI.transfer(Oxff) << 8;
[14:00:09] <jthornton> arduino :)
[14:00:12] <mhaberler> aja
[14:01:20] <mhaberler> anybody succesfully rebuild html documentation after the asciidoc patch?
[14:01:47] <jthornton> I've not tried, are the online html ok
[14:02:07] <mhaberler> not after I fixed some source ;-)
[14:02:31] <mhaberler> pdf is rebuilt ok, html isnt
[14:02:49] <jthornton> getting closer then :)
[14:03:59] <mhaberler> trying to divine the great psha arcanum ;-=
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[14:52:56] <EDocToor> Archivist: my Ubuntu craps out during bootup... so I'll be back when I figure out what wrong with X
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[14:53:33] <archivist> EDocToor, are you using the one from emc
[14:54:05] * Tom_itx stretches
[14:54:29] <EDocToor> archivist: No I am using the lastest version.. iirc it is ver 10
[14:54:56] <EDocToor> I duel boot...
[14:55:07] <Tom_itx> mine froze up after an update
[14:55:11] <Tom_itx> so do i
[14:55:15] <EDocToor> thanks
[14:55:22] <EDocToor> that is good to know
[14:55:27] <EDocToor> so how did you fix
[14:55:29] <archivist> EDocToor, http://www.linuxcnc.org/content/view/21/4/
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[14:55:41] <Tom_itx> i pulled the plug outta the wall and rebooted it
[14:55:43] <Tom_itx> :D
[14:55:45] <Jymmm> you shoot each other with boots?
[14:56:26] <EDocToor> How do I DOWNGRADE back to the last version after I get it back?
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[14:56:50] <Jymmm> uninstall / reinstall
[14:56:51] <Tom_itx> format your drive and start over
[14:56:56] <archivist> EDocToor, you should find the livecd easier because it has the realtime kernel done for you
[14:57:10] <EDocToor> I am getting it now
[14:57:14] <Tom_itx> yeah it was easy
[14:57:26] <Tom_itx> but there's 260+ updates now
[14:57:30] <EDocToor> I like easy... I am a grampy
[14:58:03] <andypugh> I am from Essex, that just means you are over 30 round here.
[14:58:22] <Tom_itx> over 30 and round?
[14:58:38] <Jymmm> andypugh: What about teeth?
[14:59:46] <EDocToor> I am from London Ontario and I am over 100
[15:00:08] <EDocToor> I should be dead... but I guess I have to wait for my turn
[15:01:39] <Jymmm> 100 What? Lbs or Yrs?
[15:01:48] <EDocToor> both LOL
[15:01:57] <Jymmm> lol
[15:02:15] <EDocToor> 200 lbs and 55 years
[15:02:48] <Jymmm> EDocToor: Careful ther, you might get 400lbs and 26 years!
[15:03:21] <EDocToor> I am on a see food diet... if I see food .. I EAT IT
[15:03:53] <EDocToor> the download is at 30%
[15:04:32] <Jymmm> EDocToor: Burn it at 4x speed
[15:04:40] <EDocToor> Will do
[15:05:10] <EDocToor> Does it have a install option on the menu?
[15:05:40] <Jymmm> On the dekstop after you have booted up from it
[15:05:45] <Jymmm> iirc
[15:06:22] <EDocToor> Awesome... how many members are there in this channel?
[15:06:37] <Jymmm> 75 atm
[15:07:36] <EDocToor> Can I be a moderator? I am feeling like bullying atm
[15:07:47] <archivist> but the map has 1270 users
[15:08:05] <EDocToor> +b 1270 users
[15:08:25] <EDocToor> that will take some time
[15:08:47] -!- mode/#emc [+o EDocToor] by ChanServ
[15:08:47] <EDocToor> I am at 50% ....
[15:08:49] -!- mode/#emc [-o EDocToor] by ChanServ
[15:09:08] <EDocToor> Ha ha
[15:09:09] -!- pcw_home has quit [Remote host closed the connection]
[15:09:20] <EDocToor> I would have been good
[15:09:32] <EDocToor> but thanks for the round trip
[15:10:13] <EDocToor> I would never b anyone... anyway
[15:13:28] <EDocToor> Jymmm: Every time I start my channel I have to "//msg chanserv recover ##free-drugs" to get my +o status back... why doesn't my status stick... do I have to request a full time channel or am I missing a command ?
[15:14:18] <Jymmm> identify to nickserv
[15:14:26] <EDocToor> ok
[15:14:50] <Jymmm> /msg nickserv indentify <password>
[15:15:54] <EDocToor> I'll add that to my startup script
[15:16:28] <EDocToor> whoa; 80%
[15:16:44] <Jymmm> A NEW lathe http://www.nationalartcraft.com/images/sub-0190-01.jpg
[15:17:15] * Tom_itx adds a floppy stepper to it
[15:17:45] <Jymmm> Tom_itx: Have you ever REALLY used a floppy stepper?
[15:17:50] <Tom_itx> sure have
[15:17:50] <EDocToor> It looks like a brain crusher
[15:18:07] <Jymmm> Tom_itx: HOW?! that shit is small
[15:18:08] <Tom_itx> original ibm full height stepper
[15:18:15] <Tom_itx> those aren't
[15:18:23] <Jymmm> Tom_itx: boat anchors dont count!
[15:18:39] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/motors/stepper4.jpg
[15:18:43] <Jymmm> 3.5" floppy
[15:19:23] <Tom_itx> wait.. these are the ibm ones, i'm not sure where the other one came from http://tom-itx.dyndns.org:81/~webpage/motors/stepper1.jpg
[15:19:34] <EDocToor> Where are the best places to find Steppers motors? 90% oh yeah
[15:19:56] <Tom_itx> old office coppiers
[15:20:02] <Tom_itx> old printers
[15:21:21] <EDocToor> and where are the BIGGEST steppers
[15:21:49] <Tom_itx> i'm not sure where they draw the line, most larger apps go with servos
[15:22:50] <EDocToor> I am looking for a really big stepper motor ... at least 2 inches x 2 inches big
[15:23:25] <andypugh> That's a small one
[15:23:43] <Jymmm> NEMA23
[15:24:00] <andypugh> http://www.kelinginc.net/KL42H2150-42-8B.pdf
[15:24:05] <EDocToor> I want to make this http://translate.google.com/translate?hl=en&sl=de&tl=en&u=http%3A%2F%2Fwww.cnc-hotwire.de%2F
[15:24:06] <andypugh> NEMA 42
[15:24:08] <Tom_itx> i got my nema23's in for my mill
[15:24:37] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/motors/stepper9.jpg
[15:24:37] <Jymmm> andypugh: Ok, I'll take a 2" NEMA42 any day
[15:25:15] <andypugh> NEMA42 is 4.29" square and 6" long.
[15:25:20] <Tom_itx> 2830 InOz
[15:25:38] <Tom_itx> http://www.kelinginc.net/KL42H2150-42-8B.pdf
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[15:25:54] <andypugh> Jymmm: I meant that the link I posted was NEMA42. You are correct that 2" is about NEMA23
[15:25:58] <Jymmm> andypugh: No, No, I want a 2" x 2" motor with all the power of a NEMA 42 motor =)
[15:26:21] <Jymmm> andypugh: ah
[15:26:26] <Tom_itx> Neo magnets and superconductor wire
[15:26:35] <andypugh> Just make it ver, very, long.
[15:26:41] <Jymmm> ...and the vacuum of space
[15:27:28] <Jymmm> would a polygon be considered an curve/arc?
[15:27:30] <andypugh> I reckon 10 NEMA23 motors (double shaft) coupled end-to-end would do the trick.
[15:27:59] <Jymmm> andypugh: ew (scarry)
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[15:28:53] <Tom_itx> you wouldn't need 42's for that app
[15:28:58] <EDocToor> Tom_itx: That look perfect... where do I order them
[15:29:06] <Tom_itx> same site
[15:29:31] <EDocToor> I know but I am going to do a bigger app.. so I'll oversize my first
[15:29:38] <EDocToor> and reuse the steppers
[15:30:04] <Tom_itx> $289
[15:31:07] <andypugh> NEMA42 is possibly _too_ big. You will find that they don't like to spin very fast.
[15:31:20] <Tom_itx> nema32 will give you ~400 InOz torque
[15:31:30] <Tom_itx> which would be more than enough for that
[15:31:48] <Tom_itx> big motors big inductance = slow
[15:32:03] <andypugh> Big inertia is possibly more limiting.
[15:32:16] <Tom_itx> you can't pwm them at the same frequency or they'll burn up
[15:32:23] <Tom_itx> they simply can't keep up
[15:33:04] <EDocToor> Tom_itx: So how much for 3 Nema23 to be delivered to Ontario?
[15:33:13] <Tom_itx> ask him
[15:33:32] <Tom_itx> http://www.kelinginc.net/NEMA23Motor.html
[15:33:40] <Tom_itx> i got item 3
[15:35:17] <andypugh> How far are you from BC? http://www.dmm-tech.com/index.html
[15:35:37] <EDocToor> Wow.. this is now my favorite channel ;-)
[15:35:38] <Tom_itx> central US
[15:35:42] <mrsunshine> aparently a little nick in the slides for the Z, but for some reason it only locks in that on the up travel, not the down travel
[15:36:27] <andypugh> (Checks map) Oh, about as far as possible and still be in the same country?
[15:36:35] <EDocToor> Ok,, I have to go... the download is finished... bbl and thanks for your time... awesome channel... Oh and thanks for +o LOL
[15:39:09] <andypugh> I need to reboot into <spit> windows to make Inventor work properly. Back in a bit
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[15:43:12] <EDocToor> Hey my root password has changed and my screen is upside down... JK
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[15:45:34] <andypugh> Back, I think?
[15:45:43] <Tom_itx> those servos look nice
[15:46:06] <andypugh> I am not sure how well they integrate with EMC2, if you mean the DMM-tech ones.
[15:46:15] <Tom_itx> yes
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[15:49:33] <Tom_itx> says it works with mach3.. surely it would work with emc
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[15:54:09] <andypugh> Yes, but I think that they want to close the loop in the driver, not the controller. Mach3 does not do closed loop at all, so Mach3 compatibility in a servo system looks like a bad sign
[15:56:12] <Tom_itx> oh
[16:01:43] <andypugh> However, I think they might have a PWM-input mode. Then then question is whether the encoder output is compatible with anything EMC2 understands
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[17:05:24] <andypugh> cradek: Touchy seems to be optimised for 1 handwheel. Do you think there would be any advantage in having more?
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[17:14:48] <cradek> andypugh: I don't know... what do you think?
[17:27:39] <andypugh> I don't know, I have never used Touchy.
[17:29:11] <andypugh> I am tempted to have dedicated knobs for feed overide and spindle overide
[17:33:25] <mrsunshine> yeey got myself a 12" touch screen today! =)
[17:36:04] <andypugh> However, looking at the pins in the sample Touchy interface, that seems to rely in halui being compatible with Touchy. Otherwise there is nowhere to hook the other knobs to
[17:42:43] <cradek> touchy doesn't need or use halui
[17:43:27] <SWPadnos> there should be nothing preventing you from hooking several handwheels to halui for "direct" control, while also having another handwheel connected to touchy for whatever it's in the mode to control
[17:44:11] <SWPadnos> plus more for direct jogging, I imagine (connected to the motion controller RT jog inputs)
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[17:47:43] <cradek> sure, you could ignore touchy's mode buttons for jogging
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[17:48:42] <skunkworks> I am using 1 jog wheel for mv,fo,so,jogx,y,z. seems pretty nice. I don't know if separate wheels would be more confusing or not.
[17:49:02] <skunkworks> btw - I found out this weekend that MV doesn't effect jog speeds ;)
[17:49:30] <cradek> touchy uses its own MV for that
[17:49:38] <andypugh> MV?
[17:49:45] <cradek> max velocity
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[17:50:51] <andypugh> I think my question is, _can_ you hook up a separate jogwheel for feed overide?
[17:51:38] <skunkworks> made up an arbor for mounting a slitting cutter on the k&t to make some fin like cuts. (was cutting by manually jogging for testing - though cradek would approve)
[17:51:50] <skunkworks> :)
[17:51:59] <andypugh> (The answer, of course is, "Yes". Perhaps I should have added "without changing and recompiling Touchy")
[17:52:29] <cradek> you'd have to use halui
[17:52:56] <cradek> the FO button would show the current value (in fact you could also poke it and change it with touchy's wheel)
[17:53:40] <andypugh> But that does work, then? Your previous statement was that Touchy doesn't use it or need it, leaving me unclear whether it allowed it/
[17:54:21] <cradek> touchy gets along fine with other user interfaces
[17:54:30] <andypugh> Though I am coming round to the idea of one big jogwheel, and some huge (cheap) buttons from eBay. (Thing slot-machine style @ 2 each)
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[17:56:33] * JT-Shop enjoys a Weihenstephaner Hefe Weissbier to celebrate the last piece of Oh Shitty Board is up :)
[17:56:47] <cradek> touchy is pretty miserly with the hard controls it requires.
[17:57:37] <cradek> I find it comfortable to use
[17:57:41] <cradek> more controls might be better, I don't know
[17:57:50] <cradek> for a lathe it'd be nice to have two wheels for jogging
[17:58:00] <cradek> when you get to 3+, it sort of starts getting silly
[17:58:58] <andypugh> Depends how prehensile your other body parts are, I guess.
[17:59:23] <andypugh> What does the panel think? http://cgi.ebay.co.uk/ILLUMINATED-RECTANGULAR-PUSH-BUTTON-RED-NEW-/370328973715
[17:59:57] <cradek> that's a decent style
[18:00:12] <cradek> I like buttons you can rest your fingers on top of
[18:00:19] <andypugh> Perhaps jus a little big?
[18:00:27] <JT-Shop> for coin operated machines they have to be pretty tough
[18:00:29] <cradek> you can keep your hand on/near the "stop" button without having to keep an eye on it
[18:00:43] <andypugh> Let me mock it up.
[18:00:43] <cradek> 50 mm!?
[18:01:10] <andypugh> OK, so not big in absolute terms, but in terms of my panel size..
[18:02:28] <andypugh> Need abort / start / pause? then quill-up / tool-release / single-step?
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[18:04:55] <cradek> perhaps http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=260745680073
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[18:05:14] <skunkworks> cradek: can you theoretically do a variable pitch thread with emc? will it blend correctly?
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[18:05:25] <cradek> andypugh: http://linuxcnc.org/docs/2.5/html/gui/touchy.html
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[18:05:33] <SWPadnos> andypugh, these are very nice and tough, though a *little* more expensive :) http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=708-1319-ND
[18:05:39] <cradek> skunkworks: theoretically yes - but I haven't tried it for a while
[18:06:03] <skunkworks> finding out it would be nice to have a cnc lathe working again. NEXT!
[18:06:14] <cradek> those look nice, but you can't hang your hand on it (on a vertical panel)
[18:06:26] <cradek> skunkworks: you actually need a variable pitch thread?
[18:06:27] <SWPadnos> that's truw
[18:06:30] <SWPadnos> e
[18:06:31] <skunkworks> but the monarch lathe sure is nice for cutting thread!
[18:06:37] <skunkworks> manually
[18:06:58] <skunkworks> hardly have to think. :)
[18:07:51] <skunkworks> cradek: no. :) just thinking about what jmk had made (the fusee) but lots of changes have been made since then.
[18:07:56] <cradek> http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=130377650222
[18:08:28] <cradek> andypugh: if you want to use touchy, get the controls it requires, after reading the docs -- don't guess
[18:09:28] <andypugh> Aye, I have read that page, that is what sent me here. I admit that most of my concern is that I have a long narrow panel to fill :-)
[18:10:22] <cradek> in particular, singeblock/feedhold is a non-momentary switch
[18:12:15] <andypugh> I was (ahem) going to make them latch in HAL
[18:12:46] <andypugh> Hmm, _perfect_ Jog buttons http://cgi.ebay.co.uk/qty-4-tri-ILLUMINATED-ARCADE-BUTTON-mame-jamma-/140407640449
[18:12:57] <cradek> a real switch is better
[18:13:11] <andypugh> (Not that I was going to have jog buttons)
[18:13:38] <cradek> yeah those would be great for jogging
[18:13:43] <cradek> "40 mm squared"?
[18:13:52] <andypugh> 1600mm?
[18:14:06] <cradek> I like center-off bidirectional momentary toggles for jogging
[18:14:21] <cradek> controls you can find by touch are superior
[18:14:29] <andypugh> Yes, I rather agree.
[18:14:45] <andypugh> TBH I will quite probably end up jogging with a gampad.
[18:15:09] <Tom_itx> well crap, who was asking about machine rates yesterday from Sweeden?
[18:15:25] <cradek> cool: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=140468484473
[18:15:32] <cradek> don't know if it's waterproof though
[18:15:42] <cradek> might be, considering arcades/soda
[18:15:44] <andypugh> Tom_itx Frallzor?
[18:16:13] <Tom_itx> possibly
[18:16:24] <Tom_itx> the dude finally showed up on irc from Sweeden :D
[18:17:02] <Tom_itx> well, i'll stuff it in the logs anyway
[18:17:05] <Tom_itx> <anonimasu> at 30~40 eur a hour + tools and material im a happy camper
[18:17:25] <Tom_itx> <anonimasu> if you need a receipt that will be 50eur..
[18:18:07] <andypugh> cradek the same guy does 2 joysticks and 16 switches for 27
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[18:39:10] <EDocToor> Archivist: Arrrrrrrrrrrrrrrrrrrrrrrrrrrrrrgh Linux HATES me.... it won't work... I am stuck with windows Why Why Why??????????????
[18:39:42] <archivist> dunno, insufficient error message
[18:40:13] <EDocToor> First error 15... on bootloaler... because I was using the OLD grub and not Grub2
[18:40:15] <EDocToor> then
[18:40:36] <EDocToor> X locks up... Note it will boot from the LiveCD
[18:41:17] <EDocToor> but I have been fussing over linux all day.. and my 55 year old brain is tired ...
[18:41:28] <archivist> x and video problems are the common issues
[18:41:43] <archivist> you is youngster....
[18:41:52] <EDocToor> so I booted in recovery mode
[18:42:00] <EDocToor> Nope I am 55
[18:42:13] <archivist> Im older!
[18:42:24] <EDocToor> ask anyone on ##electronics ... no way
[18:42:29] <EDocToor> and smarter too
[18:42:43] -!- OoBIGeye has quit [Ping timeout: 260 seconds]
[18:42:58] <EDocToor> that said.. how do I get Ubuntu to load?
[18:43:01] <archivist> the elderly are a lot more common in here :)
[18:43:27] <EDocToor> Pass me a cane and sumthing with fibre
[18:43:34] <skunkworks> EDocToor: what is the hardware?
[18:43:58] <EDocToor> Old XP that was working with Ubuntu for years
[18:44:31] <EDocToor> video card is standard one with my mobo which is a amd 64 bit
[18:45:28] <EDocToor> oh I might not have gotten a 64 bit linuxcnc Ubuntu.. could that be it
[18:46:39] <EDocToor> what was the link to the EMC2?
[18:46:55] <archivist> EDocToor, http://www.linuxcnc.org/content/view/21/4/
[18:48:14] <EDocToor> If doesn't have a 64 bit option...
[18:48:22] <EDocToor> for lucid
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[18:50:44] <EDocToor> I am going to download the 64 bit http://www.ubuntu.com/desktop/get-ubuntu/download ubuntu and install emc2 manually... do you think that .... that would work?
[18:50:53] <pcw_home> I would think the 32 bit install is more stable
[18:51:08] <andypugh> I don't know if EMC2 works on 64 bit kernels.
[18:51:09] <EDocToor> 32 bit crashes...
[18:51:23] <archivist> its hard work installing the realtime kernel
[18:51:24] <EDocToor> ok,, I'll give up..
[18:51:30] <andypugh> 64 bit might not crash, but probably won't run EMC2.
[18:51:32] <archivist> dont give up
[18:51:42] <EDocToor> what can I do?
[18:52:08] <archivist> do you have any other boxes you can try it on
[18:52:13] <pcw_home> so you try to boot the livecd and what happens?
[18:52:14] <SWPadnos> EDocToor, is this the ISO you downloaded? http://www.linuxcnc.org/lucid/ubuntu-10.04-linuxcnc1-i386.iso
[18:52:15] <EDocToor> nope
[18:52:19] <andypugh> The solution might be here: http://wiki.linuxcnc.org/emcinfo.pl?TroubleShooting
[18:52:27] <andypugh> Especially display issues.
[18:52:34] <EDocToor> the livecd worked
[18:52:58] <EDocToor> I downloaded the emc2 livecd
[18:53:12] <EDocToor> I don't know what lucid was on it
[18:53:19] <andypugh> It is possible that you are not booting from the correct kernel.
[18:53:19] <SWPadnos> there have been problems installing 10.04 on systems that already have GRUB 1 installed (I have had such problems myself)
[18:53:47] <SWPadnos> I don't remember the solution, other than to do a clean install (ie, wipe the entire hard disk and start over with ALL OSes on the disk)
[18:54:03] <EDocToor> I managed to fix the grub... and I am loading the grub2
[18:54:08] <andypugh> But it doesn't sound like you have the chance to type uname -r to find the kernel version>
[18:54:31] <SWPadnos> lucid is only one version, so if the ISO came from the linuxcnc.org site and has "lucid" in the title, then that should be the one
[18:54:37] <pcw_home> I dont understand If the livecd works, whats is your actual problem?
[18:54:52] <EDocToor> I can but I am running the one that came with the linuxcnc livecd
[18:55:38] <SWPadnos> EDocToor, so you installed from the linuxcnc.org livecd, and now (what happens??)
[18:55:43] <SWPadnos> no graphics or something>
[18:55:45] <SWPadnos> ?
[18:56:20] <EDocToor> the problem is that the livecd will load from cd.. but when I installed it to the hard drive and after I fixed the grub ... Ubuntu crashes at the time you hear the Ubuntu greeting music
[18:56:42] <SWPadnos> ok, what video card do you have?
[18:56:44] <EDocToor> Full Crash..
[18:56:56] <pcw_home> what grub fix was needed?
[18:56:57] <EDocToor> the video card is the one on the mobo
[18:57:27] <EDocToor> I had to tell the grub to install on sdb and not sba
[18:57:30] <SWPadnos> that doesn't really answer the question
[18:57:49] <EDocToor> brb searching for video info
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[19:00:21] <pcw_home> I dont know anything about grub but If there are boot problems, I would try a normal install, not one that uses an alternate drive
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[19:02:53] <EDocToor> Like I said... the grub is fixed... and it is a ubuntu error as the grub2 is loading .. it is the version of ubuntu 32 bit on my 64 bit computer or a display issue.. imho that said: I only have one computer and was able to duel boot for years in fact I tripple boot I also run backtrack
[19:03:13] <EDocToor> but I am old and not as sharp as I used to be
[19:03:13] <SWPadnos> if there's a sound playing, then the system must boot at least to the login prompt, and maybe starting to get to the desktop
[19:03:27] <SWPadnos> how much memory is in this machine?
[19:04:24] <EDocToor> only 2 gigs
[19:04:34] <SWPadnos> ok, that shouldn't be an issue
[19:05:12] <psha> really any amount of memory is not an issue
[19:05:34] <psha> in non-bigmem kernels it's only not available
[19:05:41] <SWPadnos> there are times when you may need to add a boot parameter on 32-bit machines
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[19:05:59] <EDocToor> the windows device manager reports = Nvidia GeForce 6150SE nForce 430
[19:06:01] <SWPadnos> RTAI used to have memory allocation bugs on systems over 1G
[19:06:23] <SWPadnos> ok, so that chipset does both video and sound
[19:06:50] <EDocToor> I don't know anything about hardware
[19:06:53] <SWPadnos> does the crash occur when the login prompt is displayed, or after you log in and it's about to display the desktop
[19:06:58] <SWPadnos> that's not helpful :)
[19:08:17] <pcw_home> How can it be video or 32 vs 64 bit if the (32 bit) livecd boots and runs?
[19:08:32] <EDocToor> it loads the desktop (I have auto-login) then crashes.. the sound repeats like a broken record and there are no icons
[19:08:39] <danimal_garage> hi
[19:09:04] <SWPadnos> pcw_home, well, updates are installed as part of the install process, so a later version of something could be screwed on this hardware
[19:09:24] <EDocToor> hey
[19:09:24] <SWPadnos> unless the machine was not connected to the net at install time
[19:09:34] <pcw_home> Well try with no internet...
[19:09:35] <danimal_garage> dangit i got another realtime delay error
[19:10:14] <SWPadnos> EDocToor, you could try booting in the recovery mode (you can get a grub menu by holding shift during initial bootup), and turn off sound. maybe you have a sound driver problem
[19:10:22] <SWPadnos> (it could be that simple :) )
[19:10:47] <EDocToor> Oh Really...
[19:11:09] <EDocToor> question: in linux what is the name of a IRC program
[19:11:16] <EDocToor> so I can chat from there
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[19:11:48] <EDocToor> what IRC aplication are you using
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[19:12:04] <SWPadnos> I don't remember what's installed by default, look under Applications -> Internet,
[19:12:18] <SWPadnos> it has some funny name, if I remember correctly
[19:12:21] <EDocToor> you look... and tell me the name please
[19:12:27] <SWPadnos> I use chatzilla, installed as a plugin to Firefox
[19:12:32] <EDocToor> is anyone using linux
[19:12:35] <SWPadnos> I'm not running Ubuntu, so I can't do that
[19:12:39] <SWPadnos> (on this PC)
[19:12:42] <danimal_garage> is 400k for the servo thread asking a bit much?
[19:12:48] <SWPadnos> and if you get it to boot, you can look pretty easily
[19:13:02] <SWPadnos> danimal_garage, what hardware?
[19:13:04] <EDocToor> ok bbl
[19:13:10] <danimal_garage> 5i20
[19:13:17] <EDocToor> thanks for your time.. and wish me luck
[19:13:24] <danimal_garage> d510mo mobo
[19:13:30] <SWPadnos> shouldn't be an issue, but should only be necessary if you're doing very fast contouring
[19:13:35] <SWPadnos> EDocToor, good luck
[19:13:43] <EDocToor> Ok thanks...
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[19:13:51] <danimal_garage> SWPadnos, i got a realtime delay error
[19:14:08] <danimal_garage> and it happened when emc was idle
[19:14:16] <SWPadnos> so I saw - the lower you set the servo period, the more likely you are to get a realtime error
[19:14:19] <danimal_garage> overnight actually
[19:14:29] <SWPadnos> the threshold is a percentage of the servo cycle time
[19:14:55] <pcw_home> what was the number?
[19:14:57] <SWPadnos> so if you have 40000 latency, you'll get an error at 400k servo cycle, but wouldn't at 1000000 servo cycle
[19:15:14] <andypugh> It's Pidgin, isn't it, on the LiveCD?
[19:15:43] <danimal_garage> SWPadnos, i noticed that, however i didn't know if bumping it up to 600k to get rid of the error was just masking a problem
[19:16:18] <SWPadnos> if you're not "manually" generating steps/PID, or counting encoder inputs with the CPU, you don't need great latency numbers
[19:16:27] <SWPadnos> that's part of the reason that hardware assist is a plus
[19:17:00] <SWPadnos> a 40k or even probably 100k latency spike isn't really a big deal when you have a 1ms servo period - that's still only 10% of the period
[19:17:22] <danimal_garage> SWPadnos, i've been having positioning issues which is why i've been looking into it
[19:17:53] <SWPadnos> latency isn't likely to be involved with positioning errors, if you are using hardware to generate the command signals
[19:18:02] <SWPadnos> and to read the feedback, of course
[19:18:25] <danimal_garage> SWPadnos, dmesg said "in hrecent history, there were ##### elapsed clocks between calls to the motion controller", where #### is between 600-700k
[19:18:42] <SWPadnos> that's not the important number :)
[19:19:08] <SWPadnos> there's another one that says something like "but we saw YYYYY, which is so anomalously large ..."
[19:19:28] <danimal_garage> yea, that was 683k this time
[19:19:33] <danimal_garage> it has been over 700k
[19:19:43] <SWPadnos> with a 400k servo period?
[19:19:48] <danimal_garage> yes
[19:20:06] <SWPadnos> ok, that is big, and would also be a potential problem with a 1ms servo period
[19:20:17] <SWPadnos> it's ~300k more than you asked for
[19:20:24] <pcw_home> so thats 283 uSec latency, the question is where does this come from ?
[19:20:40] <danimal_garage> pcw_home, wish i knew!
[19:20:42] <SWPadnos> have you looked into the "SMI fix" for this machine?
[19:20:51] <SWPadnos> (look on the wiki, search for SMI)
[19:20:52] <danimal_garage> no i havent
[19:20:57] <danimal_garage> ok i will
[19:21:01] <SWPadnos> I'd try that
[19:21:13] <danimal_garage> i just read that the 510 usually doesnt have any issues
[19:21:20] <SWPadnos> ok, back to accounting for me. bbl
[19:21:26] <pcw_home> But you never see problems running the latency test?
[19:21:28] <SWPadnos> if I survive
[19:21:31] <danimal_garage> my latency test looks decent, usually under 12k
[19:21:46] <SWPadnos> run the latency test overnight too
[19:21:48] <danimal_garage> i've left it running for a while with glxgears
[19:22:05] <danimal_garage> i have
[19:22:11] <danimal_garage> it seems to be an emc only issue
[19:23:04] <danimal_garage> i'll look into the smi though, however i didnt see anything of the sorts in the bios settings
[19:23:23] <pcw_home> did you ever see it without classic ladder running?
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[19:24:21] <danimal_garage> i didnt test it without cl running for very long. I don't remember if it poped up there
[19:25:38] <pcw_home> 283 usec is like 500K instructions, thats a long time to be uninterrupable...
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[19:27:23] <danimal_garage> yea
[19:27:30] <danimal_garage> :(
[19:27:49] <danimal_garage> i wonder if it's a ram issue?
[19:28:47] <danimal_garage> there does not appear to be smi with my board
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[19:31:02] <pcw_home> I have not heard of any SMI issues with the D510 (but this may be BIOs version specific)
[19:31:03] <pcw_home> but SMI issues would show up with the latency test (if you run it long enough)
[19:31:18] <danimal_garage> yea
[19:32:51] <pcw_home> memory issues are likely to just crash (you dont have ECC (or even parity I think) so the CPU will just ESAD)
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[19:36:31] <ubuntu_> this is Edoctoor on the livecd
[19:36:43] <danimal_garage> i see some people use isolcpus=1
[19:36:53] <atom1> this is Tom_itx on atom :D
[19:36:59] <danimal_garage> on that board
[19:37:00] <ubuntu_> lol
[19:37:13] <danimal_garage> wonder if i should try that
[19:37:25] <ubuntu_> I am not having a good day folks
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[19:37:44] <danimal_garage> why not?
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[19:38:15] <pcw_home> isolcpus should get you from 12-14 usec to around 8 usec but your ~300 usec if off the wall huge
[19:38:24] <danimal_garage> yea
[19:38:25] <ubuntu_> one error was "(EE) microsoft 2.4 tranciver v4.0 faild to initialize for relative axes"
[19:38:36] <ubuntu_> is ubuntu a microsoft product?
[19:38:56] <psha> ubuntu_: no, microsoft produce hardware bugs for ubuntu! :)
[19:39:04] <ubuntu_> oh I C
[19:39:25] <psha> but that's not an error if mouse is working
[19:39:47] <ubuntu_> the mouse video and sounds locks up
[19:39:48] <pcw_home> axes? has it come to this?
[19:39:58] <psha> it's due to subsequent attemtps to set up absoulte and relative pointers for devices in xinput
[19:40:01] <ubuntu_> I am afraid so
[19:40:20] <psha> try booting without X
[19:40:29] <ubuntu_> I have no idea how to do that
[19:40:33] <psha> it's live cd?
[19:40:46] <pcw_home> try different mouse?
[19:40:53] <psha> or unplug it
[19:40:55] <ubuntu_> the goal is to get this working from the hard drive
[19:40:58] <psha> and use keyboard to navigat emenus
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[19:41:18] <ubuntu_> You think it might be a mouse issue.. but it is a logitech mouse
[19:41:49] <ubuntu_> Ok... remove this mouse and try to boot from harddrive... is that right?
[19:42:12] <pcw_home> I'd change one thing at a time
[19:42:20] <ubuntu_> BTW there wasn't a boot without sound option
[19:43:03] <ubuntu_> this is so frustrating... cause I have been going in circles here...
[19:43:37] <ubuntu_> I created a xorg_backup_file ... but I don't know where it is
[19:43:56] <ubuntu_> that should give us a hint
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[19:45:21] <ubuntu_> I think that I am too dumb for linux
[19:46:02] <Tom_itx> no such luck
[19:46:06] <Tom_itx> if i can anybody can
[19:46:45] <ubuntu_> I seen your work Tom_itx with that cnc... that is very impressive..
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[19:50:33] <ubuntu_> Ok... I'll try one more time ... then I'll give my brain a rest for 24 hours
[19:50:40] <ubuntu_> later
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[20:02:39] <danimal_garage> so i tried the instructions here: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?FixingSMIIssues
[20:03:57] <danimal_garage> however emc wont start. it says error inserting and no such device
[20:04:41] <danimal_garage> by device, does it mean kernel or hardware?
[20:05:14] <danimal_garage> do i have to reboot?
[20:06:48] <pcw_home> Yes I think so (and the instructions are different for RIP)
[20:08:51] <danimal_garage> http://pastebin.com/buRAexuz
[20:08:57] <danimal_garage> thats the error
[20:11:25] <danimal_garage> RIP is livecd, right?
[20:12:11] <danimal_garage> mine is an installed version so i use the first part of #4., right?
[20:12:16] <Connor> okay, any one have any schematic on how to wire in opto interpretors into a parport pin?  I have it working.. but, I don't think it's right...  I had to use a resistor on the pin to ground to get it to work right..
[20:12:20] <pcw_home> You can do a RIP install that doesn't touch you original EMC install
[20:13:04] <pcw_home> Thats what Ive done to test things with 2.5 (but leave the 2.4.6 installation olone)
[20:13:08] <Jymmm> pcw_home: RIP install???
[20:13:25] <danimal_garage> i dont think i did that, i upgraded emc
[20:13:39] <Jymmm> What's a RIP install?
[20:14:06] <pcw_home> Yes if you just upgraded to 2.5
[20:14:08] <pcw_home> jymmm RunInPlace
[20:14:28] <Jymmm> Like LiveCD ?
[20:14:50] <pcw_home> Except on the hard drive
[20:15:34] <danimal_garage> still says no such device
[20:15:39] <danimal_garage> hmm
[20:16:20] <pcw_home> Its a make option + a environment variable setting script so you can run for example a development version and production version on the same machine
[20:21:24] <danimal_garage> http://pastebin.com/tURdB3ST
[20:21:35] <danimal_garage> that looks right to me, did i mess something up?
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[20:25:54] <danimal_garage> the module is in that folder
[20:26:15] <danimal_garage> so it must not run because there's no SMI on my machine maybe?
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[20:28:00] <Edoctoor> hi
[20:28:13] <Edoctoor> Hello
[20:28:25] <Edoctoor> Is there anyone home?
[20:28:39] <pcw_home> Perhaps, dont know
[20:28:45] <Edoctoor> it depends
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[20:29:07] <pcw_home> Do you have another MB to try?
[20:29:43] <danimal_garage> not easily
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[20:30:05] <Edoctoor> Ok, I have managed to get into Ubuntu from the hard drive... but it wasn't easy... I had to use RECOVER and SHIFT to get to the ROOTNET prompt and then I typed STARTX
[20:30:27] <Edoctoor> that is the only way that I have found so far
[20:32:24] <Edoctoor> so now that I am here... what can I do to create logs and get help? I know google it... OK LOL ;-) thanks for your help I just wanted to let you know that we are half way here.. and how I got here as I am sure there will be others that follow
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[20:47:35] <tom3p> i read 2.5 has current axis positions in #5420 ... #5428, true?
[20:51:44] <alex_joni> tom3p: yeah
[20:51:57] <alex_joni> not sure those are the exact numbers, but the positions are in # params
[20:52:35] <tom3p> how 'current' is 'current' ?
[20:53:14] <tom3p> like 'last servo update'?
[20:53:17] <Connor> Okay, how do you wire in a opto sensor into a parport input ? parpot input has 5v on it...
[20:53:33] <Connor> which is what's confusing me..
[20:54:09] <SWPadnos> tom3p, current position according to the interpreter, I'd bet
[20:54:17] <SWPadnos> ie, motion could be an hour behind
[20:54:30] <tom3p> Connor, SINK the input to the opto, meaning pull it up to 5V, and let the parport pull it down
[20:54:57] <tom3p> SWPadnos, "ah, a meaning of the word safe i hadnt been aware of"
[20:54:59] <Connor> umm, okay. how does that look?
[20:55:23] <tom3p> Connor, ascii art take a while ...
[20:55:27] <SWPadnos> is that like "for small values of 2"? :)
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[20:55:41] <Connor> opto is NPN style.
[20:55:49] <danimal_garage> SWPadnos, emc is giving me this error when i try to start it after following the instructions for the smi stuff: http://pastebin.com/buRAexuz
[20:56:15] <tom3p> SWPadnos, yeh , what can be done with 'not now' values?
[20:56:33] <SWPadnos> danimal_garage, in that case, take out the SMI stuff, it apparently doesn't work on that chipset
[20:56:41] <tom3p> Connor, if you got the opto already gimme nimber
[20:56:53] <danimal_garage> yea, i did that already, just making sure i wasnt missing something
[20:57:06] <Connor> It's a EE-SV3
[20:58:04] <SWPadnos> tom3p, you can get the current interpreter position, so you could e.g. divide a series of finishing passes into same-sized chunks (within some range), instead of doing N chunks of one size and the last one a different size
[20:58:17] <tom3p> Connor, ok, an opto interruptor, i was thinking optocoupler
[20:58:28] <Connor> Oh Sorry.
[20:58:41] <Connor> No. This is for limit/home switch.
[20:58:55] <Connor> shouldn't be much diff in the method of wiring it in though.
[21:00:55] <tom3p> Connor, K to pull up res then to +5, A to 0(5V), E to 0(5V) and C to pullup res to +5V , E ALSO to parport input ( it will go HI when tripped )
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[21:03:44] <Connor> Hmm. okay. Pullup to +5..
[21:05:55] <tom3p> Connor, inverted! ... A to +5 K to gnd
[21:06:12] <tom3p> A to +5 pullup K to gnd
[21:06:18] <danimal_garage> what is a dos style line ending? I get errors loading emc when i copy and paste stuff sometimes in the hal file
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[21:08:34] <tom3p> this turns the led on , forever. the collector is also pulled up, making the idle state HI, the emitter is tied to gnd making the collector go LOW when led is on and HI when off
[21:08:55] <tom3p> (gawd i have to proof read everything closer )
[21:10:54] <Jymmm> danimal_garage: DOS is CR/LF
[21:10:56] <tom3p> danimal_garage, dos eol is cr+lf linux/*nix is lf , older macs were cr
[21:11:20] <danimal_garage> thats all greek to me
[21:11:54] <tom3p> cr is carriage return, lf is line feed, basicly dos has 2 codes at end, linux has one
[21:11:55] <Connor_CNC> I've had the opto working on bread board turning a LED on/off...
[21:12:18] <Connor_CNC> what's throwing me.. is how to change that to hook up to the parport side of things..
[21:13:53] <Connor_CNC> The parport input trips when it's grounded.
[21:14:20] <Connor_CNC> (this is through a breakout board with optocouplers)
[21:14:31] <danimal_garage> no clue what a carriage return is. all i did was copy and pase one line in my hal to a different spot
[21:16:58] <Jymmm> danimal_garage: Newlines are hidden (not normally visible) control characters that distinguish the end-of-a-line of text and are different for each platform as follows: [Windows = \r\n] [*nix & OSX = \n] [Classic Mac = \r] And can be seen as: [LF (linefeed) = \n, 10d, 0x0A, 0001010b] [CR (carriage return) = \r, 13d, 0x0D, 0001101b]
[21:17:46] <Tom_itx> a bit off topic but after installing the live cd as a dual boot is there a way to edit the boot order on a dual boot setup?
[21:17:56] <Jymmm> yep
[21:18:02] <Tom_itx> how?
[21:18:16] <Jymmm> menu.lst
[21:18:28] <Tom_itx> where does it reside?
[21:18:36] <Jymmm> /boot
[21:18:39] <Tom_itx> ok
[21:18:42] <Tom_itx> i'll have a look
[21:18:59] <Tom_itx> just change the order or do i need to mod the lines a bit?
[21:19:15] <Jymmm> man grub
[21:19:24] <Tom_itx> ok
[21:19:41] <Jymmm> Tom_itx: MAKE A BACKUP FIRST
[21:19:48] <Tom_itx> oh why :D
[21:19:55] <danimal_garage> lol
[21:19:56] <Jymmm> Tom_itx: dumbass mistakes
[21:19:59] <Tom_itx> i live dangerously
[21:20:12] <Jymmm> Tom_itx: then reinstall fresh
[21:20:29] <danimal_garage> Jymmm's words of wisdom. MAKE A BACKUP FIRST and USE PANDUIT
[21:20:56] <Connor_CNC> tom3p: I think the parport pin must already have a pullup to 5v. pulling C up to 5v doesn't work.. however, pulling it to GND via a 4.7k works..
[21:21:33] <Jymmm> danimal_garage: wax string > panduit (If you have the talent that is)
[21:21:56] <danimal_garage> i ran out of talent a long time ago
[21:22:15] <Jymmm> I said TALENT, not BOOSE
[21:22:54] <danimal_garage> which reminds me i'm out of beer
[21:23:11] <Jymmm> like I said...
[21:23:59] <danimal_garage> if it makes it through this part without an f-up, then i'll go get some
[21:24:59] <tom3p> Connor_CNC any help ? http://pastebin.com/407P0QuZ
[21:26:10] <Connor_CNC> Yea, that assumes the parport is pulled low though, right ?
[21:26:15] <tom3p> danimal_garage, save yerself a lot of grief... understand eol cr lf OR just type the dang single line in by hand :)
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[21:27:06] <danimal_garage> typing takes too long, i chicken peck
[21:27:31] <tom3p> Connor_CNC uh it assumes the parport will see low when your slide goes into the optointerrupter
[21:28:53] <tom3p> its no assumption, thats what happens, if you want to see a high inside the hal logic, invert the pin sense by using pin-13-in-not
[21:28:55] <Connor_CNC> What state should that pin be in not hooked up to anything ?
[21:29:24] <tom3p> the unused parport pin?
[21:29:37] <danimal_garage> yay it made it through the part without a screwup
[21:29:39] <Connor_CNC> I have it up in HAL Config, parport.0.pin-13-in right now.. it's not hooked to anything.. and it's Yellow
[21:30:35] <danimal_garage> time to go get beer, bbl
[21:31:09] <tom3p> i dont know what gui you're using, or what yellow means, i use halmeter and it isnt colored, its TRUE or FALSE
[21:31:47] <Connor_CNC> Yellow is high, dark red is lo.
[21:32:00] <Connor_CNC> so, it's default state is HI.
[21:32:47] <tom3p> ok your parport is hi when not connected, use a 2.2k res from it to your gnd and see if it goes red
[21:33:16] <tom3p> you may not need a pullup, but use one until proven other wise
[21:37:39] <Connor_CNC> 2.2k didn't work. 4.5k did.
[21:37:45] <Connor_CNC> no pullup.
[21:37:51] <Connor_CNC> just a pulldown.
[21:38:59] <Connor_CNC> so, I guess that's the way to do it.
[21:39:24] <tom3p> ok, you're right, 5k up to 10k should work as pulldown
[21:40:17] <Connor_CNC> okay, so. E to GND, C to parport pin and to a 4.5k hooked to GND as well
[21:41:18] <Connor_CNC> I was using 4.7k, sorry. not 4.5k
[21:44:37] <tom3p> Connor_CNC, no, the 4.7k from pport pin to gnd is not same thing...
[21:44:39] <tom3p> run pport pin TO a 4.7K ohm res then continue to Collector. this limits the load on the parport when base energizes and connects collector to emitter to gnd
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[21:46:09] <tom3p> Connor_CNC, http://pastebin.com/xRN1g6qH
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[21:52:58] <MOGLI> CAN ANYONE HELP ME WITH AUTO LUBRICATION SETTINGS and CHARGE PUMP SETTINGS...
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[21:52:59] <Tom_itx> can you turn down the volume?
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[21:52:59] <MOGLI> whenever i start pc 2-3 contactors gets on and off continously...
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[21:53:00] <MOGLI> to Tom_itx... sorry if its for me.. i mean volume..
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[21:53:02] <MOGLI> CAN ANYONE HELP ME WITH AUTO LUBRICATION SETTINGS and CHARGE PUMP SETTINGS...
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[21:53:03] <Connor_CNC> Hmm.. that doesn't work.. the only way I get it to work is to have the 4.7k tied to the parport, the C and GND, and the E tied to ground... I'm not sure WHY that works.. I'm guessing the 4.7k is negating part of the internal pullup ?
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[21:56:12] <MOGLI> hello can anybody help me...
[21:56:13] <MOGLI> please
[21:56:44] <mhaberler> it helps if you describe the problem
[22:02:31] <alex_joni> yes, usually
[22:04:10] <tom3p> Connor_CNC, 3pix, 1what you did, 2nd what you thought about it , 3rd a suggestion http://pastebin.com/m43vQJaK
[22:06:38] <Connor_CNC> tom3p: Yes, 1 is what I did.. and works., 2nd is what I think is happening maybe.. I'm no EE, so, I'm not sure.. I'll try the 3rd and see if that works. I want it to work, but, not in some hodge-podge way.
[22:07:14] <andypugh> MOGLI Go on then, ask the question, we are on tenterhooks here!
[22:07:43] <Connor_CNC> also, If I put a 1k with a LED in series with 1, it lights the LED when it's not in a tripped state (I.E. emulates the pin 13 state except when it's getting just a tiny amount of current through, and the parport hasn't tripped yet.
[22:08:07] <SWPadnos> is the parport pin set to input?
[22:08:40] <Connor_CNC> yes
[22:08:44] <alex_joni> hey SWPadnos
[22:08:46] <SWPadnos> oh right - pin 13
[22:08:49] <SWPadnos> hi Alex
[22:09:00] <Connor_CNC> otherwise, how would I see it in state change in hal watch? :)
[22:11:40] <andypugh> Do you need/want that 4.7k to GND?
[22:12:03] <Connor_CNC> which setup ?
[22:12:10] <Connor_CNC> we've went through about 5 now..
[22:12:22] <andypugh> The third in the pastebin
[22:12:45] <Connor_CNC> That doesn't work at all. Just tried it.
[22:13:48] <tom3p> andypugh, i didnt want to short to gnd, wanted to limit current . looks like his trial says its not enuf current to drive the led tho
[22:13:59] <andypugh> You need a fairly high resistance to +5V. You might want a 330R between the "bottom" of that and the parport to limit parport current. I think that the bottom of the opto should go straight to GND
[22:14:15] <Connor_CNC> BTW, This is going through one of those cheap china 4axis boards.
[22:14:43] <andypugh> Are you sure that the 4 axis board doesn't already have optos? Many do.
[22:14:45] <Connor_CNC> with optocouplers on the inputs and outputs.. god only knows what they've tied to what.
[22:14:57] <Connor_CNC> They do.
[22:15:03] <Connor_CNC> This is for a slot sensor.
[22:16:39] <Connor_CNC> to be honest.. I didn't think I needed to wire it to anything.. I though I could just go straight in.. but, that's not the case..
[22:16:42] <andypugh> If you consider the opto and the pull-up as a voltage divider, then there is no problem when the opto is high-resistance, the parport pin will be high. However, the ratio of the effective resistance of the opto to the pull-up needs to be high enough that the voltage at the pin looks like 0V
[22:17:08] <andypugh> The slot sensor is itself an opto. I wouldn't add another.
[22:17:16] <Connor_CNC> right. I didn't.
[22:17:22] <Connor_CNC> the board has it built in.
[22:17:41] <andypugh> Ah, and the board is expecting a physical switch?
[22:17:51] <Connor_CNC> probably.
[22:18:13] <andypugh> Is it soldered in?
[22:18:20] <Connor_CNC> I mean.. It works with a 4k7 hooked to the parport and gnd.. and the e to gnd.
[22:18:29] <Connor_CNC> No. they're in sockets.
[22:18:45] <Connor_CNC> I can hook this to my 2nd parport which doesn't have any opto's on it.
[22:19:14] <Connor_CNC> I'm using a output on it to turn on/off a SSR for my vacuum.
[22:20:08] <andypugh> I might be tempted to pull the opto and wire into its socket :-)
[22:20:54] <andypugh> I doubt that the slot detector really wants to pass enough current to operate the LED in the opto
[22:21:25] <Connor_CNC> Be easier for me to hook to 2nd parport then.. because the board is mounted and is a pain to get at now.. but, the PC is on a pullout drawer... so I can get to the 2nd parport.
[22:21:59] <Connor_CNC> well, it's working and toggling a external LED at the same time.. I just wasn't sure if that was the "right" way to do it or not.
[22:22:10] <andypugh> Hmm, thinking about it, though. You say that the parport is already "behind" an opto-isolator on the chinese PCB?
[22:22:20] <Connor_CNC> yes
[22:22:43] <Connor_CNC> and the input has +5v on it.
[22:22:57] <Connor_CNC> I can power a LED direct from it.
[22:23:25] <Connor_CNC> so, on the input side of the opto, is must be pulled high.
[22:23:49] <andypugh> In that case, 5V to the c of the slot-detector, e of the slot detector onto the opto-input _should_ be OK. Put the LED in series too if you want. The current should be limited by the photon-flux in the slot detector. (that sounded technical, didn't it :-)
[22:24:41] <andypugh> Forget voltages for the time being, it is current flow through the LED in the opto on the board that matters.
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[22:26:38] <andypugh> And the PCB will have the right resistor that 5V gives the right current, so you have to hope that your LED and opto forward voltage drops still allow enough current flow through that resistor.
[22:27:12] <Connor_CNC> Umm.. Okay External 5v to C, and parport pin to E ?
[22:28:29] <Connor_CNC> okay, one 2nd..
[22:28:35] <Connor_CNC> err. one second..
[22:29:01] <Connor_CNC> I just hooked the parport pin to C, no resistors, no nothing..
[22:29:26] <Connor_CNC> and. that works.
[22:29:34] <Connor_CNC> I could have sworn I did that last night and it didn't.
[22:29:36] <Connor_CNC> WTF.
[22:34:44] <tom3p> try a small resistor , E to gnd, like 33ohms, the pports vary from machine to machine and this 330 will limit some current
[22:35:31] <Connor_CNC> It's working with just the C to the parport pin, and gnd to E
[22:35:42] <Connor_CNC> which is how I originally thought it should work..
[22:35:57] <Connor_CNC> Must of had a loose wire or something last night when testing that version.
[22:36:16] <andypugh> To the parport pin, or to the opto-on-the-board input pin?
[22:36:35] <Connor_CNC> opto-on-the-board input pin
[22:37:03] <tom3p> ok, that can work, but can be dangerous or unreliable, look at this http://hi.baidu.com/someprojects/blog/item/7f98dd2f46b06e3c1e3089c0.html
[22:37:16] <andypugh> In that case, don't bother with the 330R tom3p suggested, but you would want to think about it if you were wiring direct to the parport.
[22:38:13] <tom3p> ? its not direct now " I just hooked the parport pin to C, no resistors, no nothing"
[22:38:52] <andypugh> Does anyone know how portable .ko files are? ie can I write and compile a HAL component, and just send someone an executable file to install?
[22:38:58] <tom3p> well please use a pci parport as thats earier to replace than the one on the motherboard
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[22:39:28] <willburrrr2003> good afternoon all :)
[22:39:47] <Connor_CNC> sorry. I hooked the slot sensors' C to the parport pin 13 (which has a internal opto via the control board) and hooked it's E to GND. and yes, this is a PCI based parport card with two parports :)
[22:40:00] <willburrrr2003> when setting up a machine axis, where do I enter in the backlash offset?
[22:40:29] <andypugh> You need to add backlash compensation by hand-editing the INI file, as far as I know.
[22:41:38] <andypugh> http://linuxcnc.org/docs/html/config_ini_config.html#sub:%5BAXIS%5D-section
[22:41:45] <andypugh> See COMP_FILE and COMP_FILE_TYPE
[22:42:07] <andypugh> Or, if you want to do it simply, BACKLASH
[22:42:36] <willburrrr2003> i remember it being in the stepconfwizard on unbuntu 8....wonder why they removed it.... I will read what you havce suggested thanks
[22:43:05] <andypugh> Ah, don't go believing me over yourself when it comes to Stepconf, I haven't used it in years.
[22:43:34] <andypugh> If it was in stepconf in the past, it is probably still there now. Probably in the AXIS tabs
[22:45:49] <tom3p> Connor_CNC, is this what you have working? http://pastebin.com/cAf9Vj6U
[22:46:27] <Connor_CNC> it is now.
[22:46:52] <andypugh> Makes sense, they were probably expecting a microswitch-to-ground.
[22:47:13] <tom3p> ok, i have no idea whats inside that box, the mfctr can say if thats ok
[22:47:29] <tom3p> glad it works
[22:47:37] <Connor_CNC> That's exactly how they had it setup.. NC limit switch in series tied to ground.
[22:48:08] <Connor_CNC> that's also how my E-Stop works.. well.. pin 13 IS my estop pin.. only one I had wired into the board at the moment.. so I robbed it.
[22:48:08] <andypugh> Well, there is no way your slot sensor can break something that a microwitch couldn't
[22:48:46] <willburrrr2003> thanks any, I din't see it in the axis tabs...but may be missing it myself....read the link you hgave me and it does have what I need there :) , am I right to understand that I can have seperate backlash values for forward and revers directions ?
[22:48:46] <Connor_CNC> at most I could do is destory that opto isolator.. which I've got plenty of spares of.
[22:50:23] <andypugh> willburrrr2003: Yes, and if you set up a file, it can be different at different places along the axis.
[22:51:12] <SWPadnos> backlash has only one value. if you use screw mapping, you can have different values for approaching a point from each side
[22:51:13] <willburrrr2003> Now that I didn't catch Andy.... why would you waqnt different backlash settingas along the same axis?
[22:51:31] <SWPadnos> some screws are worn more in some places (like the middle)
[22:52:05] <willburrrr2003> ok, that makes sense
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[22:54:14] <tom3p> andypugh, what will you use the interpreter's position params for ? #5420 ... #5428
[22:54:45] <mhaberler> for instance to return to the origin after a probe run
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[22:55:49] <tom3p> ok, oyu dont care what it is >now< just as long as you return to same place... whenever you return
[22:56:08] <andypugh> I have a bunch of lathe macros. I jog to a point near the work, then say "give me the diameter that's in that textbox". The G-code macro needs to know the position of the tool when I press "go" to work properly.
[22:56:57] <tom3p> ok, from a nonvolatile position, like ctrline
[22:57:04] <tom3p> yeh thats cool
[22:59:14] <SWPadnos> tom3p, the concept of "now" in the interpreter doesn't have much to do with the actual machine state (except for things like probe moves, which are queue busters)
[22:59:59] <andypugh> In my scenario, the interpreter is stopped when I read the values.
[23:01:03] <tom3p> SWPadnos, yeh, i was imagining the current state of the execution, not the interpreter. and andy picked one scenario where they were synch'd
[23:01:06] <SWPadnos> no it isn't, or your code wouldn't be getting executed ...
[23:04:27] <tom3p> will #542x have valid values before interpreter starts up?
[23:04:48] <andypugh> Yes, OK. The interpreter is running, but the axes are stationary.
[23:05:52] <andypugh> Is 32ppr OK for an MPG?
[23:09:30] <danimal_garage> it's a bit weird, aint it?
[23:10:21] <Tom_itx> Jymmm, i didn't find menu.lst in /boot
[23:11:16] <Jymmm> Tom_itx: You didn't RTFM =) https://help.ubuntu.com/community/Grub2
[23:11:40] <Jymmm> Tom_itx: Grub 1/2 depending on install
[23:15:07] <tom3p> gday all
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[23:24:47] <danimal_garage> Jymmm will be happy to know i replenished my booze supply
[23:24:57] <JT-Shop> I'll be right over Dan
[23:24:57] <danimal_garage> or BOOSE as he calls it
[23:25:04] <danimal_garage> hi John
[23:25:13] -!- MOGLI has quit [Quit: Visitor from www.linuxcnc.org]
[23:25:18] <danimal_garage> how's the shop going
[23:29:24] <andypugh> Did MOGLI ever say what he wanted?
[23:30:36] <JT-Shop> getting down to the final bits on the roof, all the OSB is up :)
[23:31:05] <Jymmm> JT-Shop: s/OSB/Solid Wood Roofing/
[23:31:28] <Jymmm> JT-Shop: Hawaiian Harwood
[23:31:31] <Jymmm> roof
[23:31:34] <JT-Shop> looks like I better finish tomorrow with the roof
[23:31:49] * Jymmm waits for the.... nap time
[23:32:00] <JT-Shop> Jymmm: you missed it a long time ago
[23:32:12] <Jymmm> JT-Shop: Like that ever stopped you before?
[23:32:29] <danimal_garage> is it gunna rain tomorrow or something?
[23:32:39] * JT-Shop looks for his beating bar to try and loosen up the giant bolts on the backhoe wheel
[23:32:47] <danimal_garage> what's left after the roof? electricity and siding?
[23:32:50] <JT-Shop> tuesday they predict rain
[23:32:54] <danimal_garage> ah
[23:33:03] <JT-Shop> uh, yea just finishing
[23:33:05] <Jymmm> JT-Shop: Did you ever get the snow out?
[23:33:17] * Jymmm missed his squeezebox
[23:33:19] <JT-Shop> I made snow cones from it
[23:33:27] <danimal_garage> i'd like to buy some land and put up a steel building
[23:33:51] <Jymmm> JT-Shop: Beer Cones?
[23:34:01] <andypugh> I would like to be given some land, and have someone put up stone buildings for free :-)
[23:34:08] <danimal_garage> i was looking around and i can buy a 60x40 for like $13k
[23:34:13] <Jymmm> stone?
[23:34:16] <Jymmm> http://www.logitech.com/en-us/speakers-audio/wireless-music-systems/devices/5847
[23:34:25] <andypugh> I don't trust any other building material
[23:34:28] <Jymmm> Awesome sound too
[23:35:15] <danimal_garage> i lived in a stone house once. it was the coldest most inefficient houce i ever lived in
[23:35:20] <Jymmm> andypugh: rebar enforced concrete
[23:35:20] <danimal_garage> house*
[23:35:37] <danimal_garage> granted it was built in the 1800's
[23:35:54] <Jymmm> danimal_garage: no moisture barriers I suspect
[23:36:14] <andypugh> My folk's house is fine, though the walls are 3' thick.
[23:36:16] <danimal_garage> all the wire was wrapped with cloth and was strung around ceramic rings nailed to studs
[23:36:36] <danimal_garage> some of hte light switches were knobs or buttons
[23:36:46] <danimal_garage> real high tech :)
[23:36:52] <Jymmm> That's called 'knob and tube" wiring
[23:37:24] <danimal_garage> it was a step up from the wiring that came in my Hardinge lathe :)
[23:37:44] <danimal_garage> solid core wires, half were broken at the solder joints
[23:38:11] <andypugh> He's right, you know! http://en.wikipedia.org/wiki/Knob_and_tube_wiring
[23:38:31] <andypugh> But, if it was a stone-built house, why were there any studs?
[23:38:56] <danimal_garage> wasnt stone between the rooms
[23:39:06] <danimal_garage> just the outside walls
[23:39:31] <danimal_garage> outside walls were about 2 feet thick
[23:41:21] <andypugh> I bet it hasn't fallen down, or been eaten by termites, has it?
[23:41:35] <danimal_garage> interesting.... if i lower the servo thread, the numbers it throws in dmesg after it errors are also lower.
[23:41:50] <danimal_garage> andy, neither has any other house i've lived in
[23:43:14] <andypugh> Stop being rational about this :-)
[23:43:18] <danimal_garage> i would think the longest elapsed clocks would be the same regardless of the servo thread's value, right?
[23:47:30] <Connor_CNC> okay, using limit as home sucks... half the time after it homes.. it thinks it's @ limit
[23:47:44] <andypugh> There is an INI file setting...
[23:48:37] <danimal_garage> Connor, change your home position offset in ini
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[23:49:43] <danimal_garage> actually you probably want ot change your limit offset
[23:49:59] <andypugh> 2.2.9.1 HOME_IS_SHARED and HOME_IGNORE_LIMITS http://linuxcnc.org/docs/html/config_ini_config.html#sub:%5BTRAJ%5D-section
[23:50:01] <danimal_garage> or your min and max limits
[23:50:29] <Connor_CNC> it looks as if it varies based on what I have hooked up to the output.. I but my other limit in series.. and it must change the tipping point of the sensor..
[23:50:51] <Connor_CNC> I have home ignore limits toggled.
[23:50:59] <Connor_CNC> home_is_shared didn't look like what I wanted..
[23:51:07] <andypugh> You also need the home position to be unambiguously off the sensor, yes
[23:51:49] <andypugh> It doesn't matter, you can still move past home to the limit.
[23:51:51] <Connor_CNC> how do you set it up so that home is 0
[23:52:03] <andypugh> Set the limit to -1?
[23:52:33] <andypugh> The home position is irrelevant anyway, you never do anything in the machine reference frame.
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[23:53:15] <Connor_CNC> Currently, this is what I have. MIN_LIMIT =0, MAX_LIMIT 302.8 (use to be 304.8 I.E. 12") home_offset = -0.1
[23:53:30] <Connor_CNC> HOME = 0
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[23:54:42] <andypugh> Try HOME=20 just to see what happens?
[23:55:50] <andypugh> http://linuxcnc.org/docs/html/config_ini_homing.html is potentially useful
[23:56:39] <Connor_CNC> Okay, That caused the machine to start moving toward negative limit, hits it, moves forward a tad, then back, then jumps to 20mm
[23:57:37] <danimal_garage> yea
[23:57:49] <danimal_garage> that sounds right
[23:58:17] <danimal_garage> when it moves back towards the limit, you want it to move a bit slower
[23:58:21] <andypugh> I would go for a home offset of zero, a home position of 0.1 and then tweak the max limit to suit.
[23:58:28] <danimal_garage> are you using a mechanical switch to home?
[23:58:44] <Connor_CNC> no, opto's that we just figured out how to wire in. :)
[23:58:58] <danimal_garage> not a big fan of optos
[23:59:17] <danimal_garage> what if a chip falls in there?
[23:59:21] <andypugh> I am happy with mine.
[23:59:44] <andypugh> I have them either carefully placed, or sheilded, or both.