#linuxcnc | Logs for 2012-05-06

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[00:23:29] <KimK> gene__: Did you get it figured out? Would you like to pastebin your hal file?
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[01:13:38] <r00t4rd3d> mommy?
[01:14:23] <ReadError> said knock you out
[01:16:54] <r00t4rd3d> i actually put in alot of time today on my table
[01:17:19] <r00t4rd3d> boring stuff but still stuff
[01:17:51] <pfred1> I put in a lot of time trying to sleep but i kept on getting acid reflux
[01:18:04] <r00t4rd3d> eat some hot peppers
[01:18:07] <pfred1> so here I am!
[01:19:14] <ReadError> im wasting alot of time trying to generate this dang toolpath
[01:20:05] <pfred1> ReadError I've heard it said first you get good, then you get fast
[01:22:32] <r00t4rd3d> worked the other way around for me
[01:22:40] <ReadError> pfred1
[01:22:44] <ReadError> my model is good
[01:22:50] <ReadError> the apps that are free, arent ;/
[01:23:00] <ReadError> i had high hopes for pycam too ;(
[01:23:29] <pfred1> G code generation is spotty on Linux it seems
[01:24:11] <ReadError> indeed sir, indeed
[01:24:18] <pfred1> I was just checking out reprap did you know that stuff runs on java?
[01:24:31] <ReadError> yea, and usb
[01:24:38] <pfred1> how in the heck they get java to do RT I'll never know
[01:24:51] <ReadError> well, its balls slow
[01:25:12] <pfred1> they really don't know what they're doing do they?
[01:25:20] <ReadError> well
[01:25:27] <ReadError> java is pretty bloated
[01:25:33] <ReadError> but its fast to bang out code in as well
[01:25:46] <pfred1> oh come on I just watched a video where they made a coat hanger and all I could think was they could have picked up a stick in their yard and nailed it to the wall
[01:26:09] <pfred1> it'd have looked better too :)
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[01:47:55] <Jymmm> a reprap hanger?
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[07:07:09] <DJ9DJ> moin
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[08:08:17] <alex4nder> hey
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[08:50:11] <KimK> !help later
[08:50:42] <KimK> !later
[08:52:53] <archivist> kimk !later nick message
[09:03:05] <KimK> archivist: Thanks! I thought that's what it was, but I wasn't sure. Already sent by email anyway, lol. I appreciate it though, I'll know next time.
[09:03:51] <alex4nder> sup
[09:05:13] <KimK> Not much, what's up there?
[09:05:22] <alex4nder> nothing much
[09:05:30] <alex4nder> trying my new mill control setup for the first time
[09:05:43] <alex4nder> hopefully I'll be able to hit 100 IPM
[09:06:13] <KimK> Great, let us know how it goes.
[09:06:31] <archivist> speed is not the most important specification unless its mass production
[09:06:58] <alex4nder> well speed is the only improvement that is going to be made over my old setup
[09:07:08] <alex4nder> everything else 'just worked'
[09:08:21] <alex4nder> this is a new N2800 atom, running Debian, with working modern wifi, with a local build of 2.6.32.11+rtai
[09:10:16] <archivist> just that I see a few in here chasing that last bit of speed but forgetting the torque is dropping off there steppers :)
[09:13:57] <alex4nder> yah
[09:14:17] <alex4nder> I specifically picked steppers with small inductance, since I've got 20 TPI screws
[09:14:30] <alex4nder> I figured I didn't need a lot of torque because of the inherent mechanical advantage.
[09:14:46] <alex4nder> I think my steppers have holding torque of 120 oz/in
[09:17:18] <archivist> I like to leave a lot of headroom for friction, cutting load and fixture weight causing yet more friction
[09:18:18] <archivist> and that other hidden one, friction caused by the cutting load
[09:18:29] <alex4nder> yup
[09:18:38] <alex4nder> I've been loading my mill down to test failure
[09:18:59] <alex4nder> so far the only failures I've had have been due to improper chip clearing on aluminum, leading to smears.
[09:19:00] <archivist> time for me to go play steam engine driver
[09:19:03] <alex4nder> late
[09:20:05] <archivist> climb milling can give a better finish with aluminium
[09:21:05] <archivist> less chance of of that smearing / re cutting of chips
[09:21:39] <archivist> but the machine has to be capable
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[09:28:30] <alex4nder> archivist: my problems are all related to improper feeds and speeds.
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[11:10:39] <_abc_> hello. Is there a current way to install a testing linuxcnc version on a USB stick?
[11:10:45] <_abc_> If there is, then I can't find it.
[11:10:56] <jthornton> check the wiki
[11:11:22] <_abc_> jthornton: was that for me?
[11:12:46] <_abc_> http://cooltool.he.fdread.org/cncforum/ this page is gone
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[11:27:02] <_abc_> fdread.org seems to be gone, does anyone know if this is a temporary server upgrade or failure, or if this is a permanent 'goner'?
[11:28:00] -!- r00t4rd3d [r00t4rd3d!~XX@unaffiliated/r00t4rd3d] has joined #linuxcnc
[11:35:59] <psha> _abc_: just install it to USB stick like to normal disk
[11:36:02] <psha> that's all you need
[11:39:25] <_abc_> psha: I will try that tomorrow but I want to read all first
[11:40:02] <_abc_> psha: I need to put it temporarily on a working system without nuking the old one before the new one works so whatever I will do will have to be totally side effect fault free
[11:40:28] <_abc_> If I oops a partition because of some automated system in the install I did not know about I will be pissed and it will take days to restore the old one
[11:40:46] <_abc_> So thanks for the info, but please reassure me here, there will be NO side effects?
[11:41:04] <_abc_> I might pull the hard disks and install to stick using just live cd and usb stick on the machine
[11:41:15] <_abc_> Would that work? There is enough ram for sure
[11:41:16] <freespace> do that if you arereally worried
[11:41:34] <freespace> it is always possible you will accidentally the wrong disk
[11:41:39] <_abc_> Yes I am really worried, I have some work to do and I hope to test this 'in between' and install it later this week if all is okay
[11:41:40] <freespace> even if the installer itself has no side effects
[11:42:01] <_abc_> Oh I have been developing on linux since ~1995 I seldomly make such mistakes
[11:42:27] <_abc_> But I am worried about it detecting some existing squash fs left there from other attempts and accessing and installing or otherwise acting on that
[11:42:28] <freespace> :)
[11:42:40] <freespace> it would be very specific about which disk to touch
[11:42:45] <_abc_> There may be ancient init scripts and stuff in there which can cause quite a knot if run now
[11:43:32] <_abc_> Is the stick-only distro based on 2.4 dead now? There seems to be no final message about that, so, being an optimist, I assume it is still around...
[11:43:51] <freespace> given how worried you are, just pull the hdd first, or image the hdd, before installing
[11:43:59] <_abc_> yeah I will do that anyway
[11:44:04] <_abc_> We will see how this goes
[11:44:12] <_abc_> 8GB stick enough? :)
[11:44:15] <freespace> you can probably convince the iso to boot off a usb stick
[11:44:28] <_abc_> freespace: yes, I hope I will be able to.
[11:44:52] <freespace> 8gb will be more than enough :)
[11:45:00] <_abc_> Okay, has any one of you actually done this?
[11:45:07] <_abc_> Installed onto a stick? Recently? 10.4 ?
[11:47:41] <freespace> nope
[11:47:43] <freespace> *not me
[11:49:35] <psha> _abc_: there will be _no_ side effects if you install it onto USB flash drive on separate computer
[11:49:46] <psha> otherwase there are chances that you bust your old system
[11:49:54] <psha> select incorrect partition etc
[11:50:04] <_abc_> psha: I know. I will pull the disk and do it that way
[11:50:26] <_abc_> Okay so this seems to be set. Fingers crossed...
[11:50:40] <psha> however it's not that simple to mess flash drive (which is usually small) with hard disk (which is large)
[11:50:43] <freespace> image the drive if you are so worried
[11:50:47] <_abc_> Does booting from multi partitioned usb sticks usually work?
[11:51:04] <_abc_> I have no idea what bios I have on that machine
[11:51:04] <psha> usually yes
[11:51:23] <_abc_> Okay so thanks for the info, I will report back, hopefully success.
[11:51:26] <psha> if you are able to boot from flash there is no difference paritioned it is or not
[11:51:28] <jthornton> good morning psha
[11:51:32] <psha> jthornton: good day :)
[11:51:45] <psha> spring here, finally cleaned windows
[11:51:54] <_abc_> from your disks? :)
[11:51:57] <jthornton> it is hot here all ready
[11:52:02] <psha> in my flat ;)
[11:52:16] <psha> i've cleaned windows from my disks 10 years ago :)
[11:52:44] <psha> anybody used goodle drive as encrypted backup?
[11:53:05] <jthornton> psha, I'm trying to use a small make file to add index.tmpl like the linuxcnc docs but don't have a clue what to do. I've found the lines in the submakefile...
[11:53:35] <psha> Submakefile may be used standalone
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[11:53:40] <psha> at least it was some time ago
[11:54:12] <jthornton> this is what I have for my make file so far http://pastebin.com/G3TB1u5Z
[11:54:25] <psha> jthornton: 2.5?
[11:55:05] <jthornton> no, just a small doc I'm working on
[11:55:17] <jthornton> this seems to be part of what I need http://pastebin.com/Xc4C2STM
[11:55:20] <psha> what was index.tmpl?
[11:56:12] <jthornton> this is my index.tmpl http://pastebin.com/YpGaadwD
[11:57:33] <psha> why not to make index.txt and generate index.html from it?
[11:57:59] <jthornton> ok, I think I know what you mean
[11:58:11] <jthornton> much simpler yea
[11:58:24] * jthornton smacks forhead
[11:58:27] <jthornton> thanks
[11:58:58] <psha> index.tmpl is something left from old times
[11:59:10] <psha> since migration was too serious that parts was not involved
[11:59:29] <jthornton> ok thanks
[12:05:07] <jthornton> psha, thanks I have that working now :-)
[12:06:23] <Jymmm> Mornin
[12:07:02] <jthornton> morning Jymmm
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[12:16:42] <r00t4rd3d> -_o
[12:17:10] <Jymmm> jthornton: Canon gong to be ready for the 4th?
[12:17:15] <Jymmm> going
[12:17:25] <jthornton> going to fire it today
[12:17:53] <Jymmm> jthornton: Cool, be sure to setup the video camera
[12:18:09] <Jymmm> jthornton: we need to see the expression on your face too =)
[12:18:15] <r00t4rd3d> i got a cannon
[12:18:24] <r00t4rd3d> http://www.pocketartillery.com/
[12:19:52] <r00t4rd3d> i tried to fire it once but all i got was a big puff of smoke
[12:20:08] <r00t4rd3d> think i used the wrong powder
[12:20:57] <jthornton> could be a dangerous mistake to make when firing a cannon
[12:21:28] <r00t4rd3d> it was just black powder, it could have been damp though
[12:21:48] <jthornton> no such thing as "just black powder"
[12:21:59] <jthornton> F, FF, FFF, FFFF
[12:22:09] <jdhNC> http://www.pocketcannons.com/
[12:22:26] <r00t4rd3d> i guess i should be using FFFF
[12:23:11] <r00t4rd3d> http://www.pocketartillery.com/minicannon.pdf
[12:23:11] <jthornton> that is touch off powder! you should never guess at gun powder
[12:23:59] <r00t4rd3d> "Hodgdon�s Triple Seven FFFg seems to work very well"
[12:24:06] <r00t4rd3d> ok FFF
[12:25:18] <jthornton> and weigh your charges and know if you have anything in the barrel it will increase the pressures
[12:25:29] <jthornton> we use wadded up tin foil mostly for a cannon ball
[12:25:44] <r00t4rd3d> mine fires BB's
[12:26:00] <jthornton> but a patched lead ball takes less powder due to the tighter fit and more mass
[12:26:08] <jthornton> cool
[12:27:11] <Jymmm> jthornton: Do you ever go hunting/backpacking etc?
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[12:34:01] <jthornton> not any more
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[12:36:21] <Jymmm> jthornton: PM?
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[13:22:24] <syyl_ws> FFFF stands for FFFFFFaaast burning?
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[13:38:48] <jthornton> yea
[13:39:23] <jthornton> actually it is how fine the powder is
[13:43:14] <jthornton> new chapter today :-) http://gnipsel.com/shop/emc2/tutorial/tut03.html
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[14:24:59] <JT-Shop> Jymmm: well pidgin seems to work on the shop sinblows computer
[14:25:02] <Tom_itx> good stuff jt
[14:25:17] <JT-Shop> the tutorial?
[14:25:20] <Tom_itx> does it work the same for linuxcnc?
[14:25:22] <Tom_itx> :)
[14:25:30] <Tom_itx> yeah
[14:25:52] <Jymmm> JT-Shop: cool
[14:26:06] <JT-Shop> thanks, I just moved it around on my web site the new url is http://gnipsel.com/linuxcnc/tutorial/index.html
[14:26:37] <JT-Shop> Tom_itx: does what work the same for linuxcnc?
[14:26:52] <Tom_itx> the tutorial, i was kidding
[14:27:15] <JT-Shop> LOL it is for LinuxCNC
[14:27:44] <Tom_itx> i guess it's not illegal to have a directory so named
[14:27:47] <JT-Shop> what's the next chapter?
[14:28:01] <JT-Shop> ah the old directory is gone now
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[14:29:20] <cylly2> JT-Shop: looks fine... great effort... i hope you get it finished ;-)
[14:29:30] <JT-Shop> thanks
[14:30:20] <Tom_itx> yeah that will help you and noobs alot
[14:30:22] <JT-Shop> I'll keep plugging away at it... now when someone asks "is there a G code tutorial for LinuxCNC?" we can say yea
[14:30:38] <Tom_itx> it's why i wrote an avr tutorial, i got tired of explaining it over and over
[14:31:36] <cylly2> hrhr, sounds familiar ;-)
[14:32:03] <cylly2> only i do it in a german chqannel for µCs and electronics
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[14:33:14] <cylly2> and there are tutorials... but the kids are not able to read anymore i think.
[14:33:21] <cylly2> "tl;dr"
[14:33:57] <pfred1> cylly2 are you being too silly again?
[14:34:03] <cylly2> oh
[14:34:07] <cylly2> sorray
[14:34:12] cylly2 is now known as Loetmichel
[14:34:47] <pfred1> I read and read and read and lately i feel like I'm being drawn around in circles
[14:35:04] <Loetmichel> atm i am bathing, not silly
[14:35:07] <Loetmichel> :-)
[14:35:15] <pfred1> right now I'm trying to get some kind of coherent font rendering in Debian good luck on that front!
[14:36:10] <pfred1> if anything has even the slightest whiff of licensing they patch it out
[14:36:38] <JT-Shop> what's that for?
[14:36:40] <pfred1> I mean they don't even ship the standard X font packages because a couple of those have questionable licensing
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[14:37:46] <pfred1> it also appears that their xft cairo and fontconfig packages are fubared in subtle ways
[14:37:47] <Tom_itx> Loetmichel, if you wrote them in 'txting' format they could understand it
[14:39:30] <JT-Shop> anyone want to leave then join so I can see if I have that white noise turned off?
[14:40:01] <Tom_itx> ?
[14:40:13] <pfred1> OK
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[14:40:35] <pfred1> there gone and back again
[14:42:08] <JT-Shop> darn, it didn't work... thanks
[14:43:57] <Tom_itx> i suppress join, part, nickchange, quit and mode
[14:44:18] <JT-Shop> I'm trying to configure pidgin on my winblows computer
[14:44:37] <Tom_itx> are you using xchat?
[14:45:01] <JT-Shop> only on my linux machines, they want $20 for a winblows version
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[14:45:12] <Tom_itx> not the one i use
[14:45:20] <Tom_itx> maybe it's just old
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[14:45:33] <JT-Shop> yea, mine is recent
[14:45:48] <Tom_itx> 2.8.6-2
[14:46:03] <Tom_itx> i don't use it alot
[14:47:42] <pfred1> I use irssi
[14:49:00] <pfred1> basically because it reminds me a lot of BitchX which I used for a long time but now BX is gone
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[14:51:07] <Tom_itx> hopefully i'll get my cap boards soon so i can finish my psu
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[14:53:42] <pfred1> Tom_itx I want to build a switching supply after reading so much about them
[14:54:03] <pfred1> linears are ho hum to me anymore done that too much
[14:54:22] <Tom_itx> i would have too but i got alot of this surplus
[14:54:56] <Tom_itx> just a place to mount the caps really: http://tom-itx.dyndns.org:81/~webpage/cnc/psu_board.png
[14:55:21] <Tom_itx> i would have preferred them have screw lugs
[14:56:35] <Tom_itx> i added an led to each one to use as a drain when it's shut off
[14:57:15] <pfred1> Tom_itx this is one way I mount caps http://img683.imageshack.us/img683/1641/p1010007ep.jpg
[14:57:28] <pfred1> the big copper plate effect
[15:01:55] <Tom_itx> yeah, these don't have screw mounts
[15:02:34] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/cnc/psu1.jpg
[15:02:53] <Tom_itx> i have a bunch of those to wire in
[15:04:23] <pfred1> Tom_itx running the xformers in series for higher voltage?
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[15:04:47] <Tom_itx> current
[15:04:59] <pfred1> ah parallel then?
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[15:05:27] <Tom_itx> yeah
[15:05:38] <Tom_itx> i had the parts so i joined them after the bridges
[15:06:06] <Tom_itx> i could have used one
[15:06:15] <pfred1> I always heard if one was a little more V than the other that doesn't work out
[15:06:18] <Tom_itx> they are matched pretty close
[15:07:10] <Tom_itx> if it doesn't, i'm not out much. i'll just get a torroid at that point
[15:07:33] <pfred1> I'm using a big xformer I pulled out of a minicomputer I stripped
[15:07:53] <pfred1> there were 2 13.5 windings in it I wired in series
[15:08:00] <pfred1> huge magnet wires
[15:08:04] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/cnc/psu/psu_index.php
[15:08:38] <Tom_itx> i split one at the center tap so i could have a bit lower voltage to send to my smps for the logic supply
[15:09:40] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/misc_stuff/5v_switcher.jpg
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[15:09:44] <Tom_itx> i'll use one of those for that
[15:09:45] <pfred1> I like those block bridges i use them a lot
[15:10:22] <pfred1> though not as many in one project as you have http://tom-itx.dyndns.org:81/~webpage/cnc/psu/psu4.jpg
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[15:10:38] <pfred1> I think they're good to about 10 amps a piece
[15:10:45] <Tom_itx> those are 25A
[15:10:50] <JT-Shop> looks like pidgin ain't going to work with Wildblue
[15:10:53] <pfred1> OK 25A then
[15:10:56] <Tom_itx> i don't need all of them really
[15:11:16] <pfred1> I can't imagine you do unless you're heating your hot tub with this
[15:11:22] <Tom_itx> heh
[15:11:34] <Tom_itx> i was too lazy to figure out the phases for each transformer
[15:11:46] <Tom_itx> and like i said, i already had the parts
[15:11:48] <pfred1> yeah that is one thin
[15:11:54] <pfred1> thing even
[15:12:10] <pfred1> I used ot think AC was AC until I messed around with a variac
[15:12:32] <pfred1> turns out hot and neutral really are different
[15:12:57] <Tom_itx> i could get by with one of those but i'm building this for furture expansion
[15:13:13] <pfred1> hooke it up one way and clockwise adjust made the V go down flip and it reversed
[15:13:21] <Tom_itx> and i've already got drivers etc on the sherline
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[15:13:59] <Tom_itx> it should be big enough to drive a small bp or table mill i think
[15:14:00] <pfred1> it drove me batty until I finally conceded that OK AC ain't AC
[15:14:21] <pfred1> like you said each of those bridges is 12A
[15:14:25] <pfred1> 25 even
[15:14:43] <pfred1> the real thing is watts though
[15:15:02] <pfred1> but having them screwed to that aluminum should help
[15:15:17] <Tom_itx> if not i'll put them on a chunk of that heatsink
[15:15:33] <pfred1> nah they'll be fine
[15:15:42] <pfred1> though sometimes I heatsink compound them
[15:15:56] <Tom_itx> i plan to
[15:16:02] <Tom_itx> when it's all done
[15:16:06] <pfred1> yeah stuff is a mess until final assembly
[15:16:27] <pfred1> I worked at a place we'd get it by the quart can
[15:16:34] <pfred1> put it on with putty scrapers
[15:17:24] <pfred1> well what we did is we'd get a piece of corrugated cardboard and smear it on that then smear the parts on the smeared cardboard
[15:17:35] <pfred1> worked pretty good
[15:26:52] <jdhNC> what happens if you put two SMPS in parallel?
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[15:27:28] <pfred1> jdhNC whiechever one is higher voltage is going to take the load and the lower voltage one become a load
[15:28:02] <pfred1> sometimes there is even smoke and fire involved
[15:30:18] <jdhNC> I like smoke and fire, but not in this context.
[15:30:54] <jdhNC> how about connected via diodes?
[15:31:17] <pfred1> this PSU has 3 current boosting transistors but it also has 3 current balancing resistors http://img713.imageshack.us/img713/2244/pict0579s.jpg
[15:31:27] <pfred1> well 6 because i didn'
[15:31:33] <pfred1> well 6 because i didn't have the right value resistors
[15:31:49] <pfred1> the resistors i used are in parallel
[15:32:07] <pfred1> that sucker can weld
[15:33:15] <pfred1> it is a neat PSU you can't short it out it is current limiting
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[15:33:59] <pfred1> you can touch the leads together and go oh neat sparks and it doesn't care
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[15:34:32] <Tom_itx> the cap might if you do it enough
[15:34:51] <pfred1> it doesn't seem to mind either believe me I've don it :)
[15:34:56] <pfred1> done it even
[15:35:14] <pfred1> GE makes nice caps
[15:35:21] <pfred1> well made
[15:35:35] <pfred1> I shudder to think what that thing cost
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[15:36:50] <pfred1> I need to make a soft start circuit for it though it does sort of make the xformer hum when i flip it on
[15:37:43] <Tom_itx> just warms it up for the day
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[15:38:16] <pfred1> I have my patented bleeder LED on it it takes a while to bleed down
[15:39:02] <pfred1> plus that PSU has a 510 ohm resistor across it just for stability
[15:39:27] <Tom_itx> 5w?
[15:39:40] <pfred1> I can't remember it ain't no 1/4 watt as I can recall
[15:39:41] <Tom_itx> what are those mounted to the aluminum?
[15:39:51] <Tom_itx> or near it
[15:39:55] <pfred1> those are current boosting transistors
[15:40:07] <Tom_itx> the resistors
[15:40:07] <pfred1> oh those are the current balancing resistors
[15:40:23] <pfred1> they're what you need when you parallel current sources
[15:40:37] <pfred1> or you get a push me pull me
[15:40:55] <pfred1> which if you're not Dr. Doolittle ain't usually what you're after
[15:41:26] <pfred1> they make a couple thousandths of a volt difference between your current sources not matter
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[15:42:54] <pfred1> Tom_itx see all the sources hook to the common rail through them
[15:43:22] <pfred1> so they're not connected right to each other but between 2 of those resistors in series
[15:43:34] <pfred1> of course one resistor wins over 2
[15:44:21] <pfred1> ohm can ether work with you or against you
[15:45:16] <pfred1> but that is how you parallel current sources
[15:46:19] <Tom_itx> they must be rather low resistance
[15:46:23] <pfred1> yup
[15:46:33] <pfred1> but a little is all you need
[15:46:48] <pfred1> as long as the two littles together even out any difference
[15:48:03] <pfred1> it is kind of like a current bridge
[15:48:46] <pfred1> Tom_itx niw if your PSU blows up in your face yo ucan't say no one told you
[15:49:43] <Tom_itx> i think smps works a bit different than a linear supply
[15:49:46] <pfred1> personally I'd have made it one xformer for each driver and not paralleled them
[15:49:56] <Tom_itx> i started out to do that
[15:50:17] <pfred1> just make the grounds common
[15:50:50] <pfred1> I mean you're multiplying all the parts anyways
[15:51:19] <pfred1> so the low parts count argument doesn't apply
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[16:07:13] <Tom_itx> pfred1 don't your resistors need to be able to carry the full supply load?
[16:07:27] <pfred1> Tom_itx yes
[16:07:35] <pfred1> but they share it
[16:08:01] <Tom_itx> resistance is heat and heat is wasted energy
[16:08:24] <Tom_itx> those must be in the .x ohm range
[16:09:38] <pfred1> yeah .1 IIRC
[16:10:21] <pfred1> you have to stop current from flowing from one current source to another
[16:10:32] <pfred1> well resist it
[16:13:38] <pfred1> Tom_itx the term is load balancing resistors
[16:13:52] <Tom_itx> i know
[16:14:46] <r00t4rd3d> what other apps/programs should I install on my linuxcnc machine
[16:15:37] <pfred1> r00t4rd3d that is vague LinuxCNC comes wiht all it needs to do what it does I don't know what else you want to do
[16:16:08] <Tom_itx> xchat
[16:16:20] <pfred1> if you say I want to do X what do I need to install to do it on my LinuxCNC machine I might know
[16:17:14] <pfred1> Tom_itx irssi!
[16:18:03] <pfred1> IRC is text all it needs is a text client
[16:18:16] <pfred1> GUI does nothing for IRC
[16:18:46] <r00t4rd3d> i was just wondering if there were other useful programs for cnc
[16:18:55] <pfred1> blender
[16:19:14] <pfred1> but you need an IQ of about 200 to figure out how it works
[16:19:26] <r00t4rd3d> I use blender already
[16:19:35] <pfred1> then you're smarter than I am
[16:19:40] <Tom_itx> ngcgui
[16:20:05] <pfred1> last time i ran blender i couldn't even get it to render an image for me
[16:20:11] <r00t4rd3d> lol
[16:20:32] <r00t4rd3d> takes a while just to learn how to navigate the view spaces
[16:20:45] <pfred1> most of the tutorials out there are for an UI that I didn't even have
[16:21:02] <pfred1> I was like that's not what it looks like here!
[16:21:35] <pfred1> most of them seem to be video tutorials too
[16:23:25] <pfred1> r00t4rd3d it looked to me like it'd take a lot longer than I am willing to invest in order to learn how to do much with blender at all
[16:24:29] <pfred1> all CAD software I've ever tried is about the same in my estimation
[16:25:12] <pfred1> freecad is still worthless because last time I checked it still does not support the imperial measurement system
[16:26:12] <pfred1> I highly doubt it ever will too
[16:30:19] <pfred1> wow Austin Powers is real! http://www.gadgetbox.msnbc.msn.com/technology/gadgetbox/aquatic-stunt-frickin-sharks-frickin-laser-beams-753604
[16:32:08] <pfred1> I donno i bet that shark thinks it is the coolest fish in the ocean
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[16:50:39] <JT-Shop-2> Tom_itx: X-Chat is still open-source and licensed under GPL. So there are a few free non-official builds
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[17:13:38] <IchGuckLive> Hi all around
[17:19:05] <DJ9DJ> hi there
[17:19:11] <IchGuckLive> B)
[17:20:05] <IchGuckLive> DJ9DJ: location here DL5IAH Jn39UF
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[18:04:33] <WillenCMD> Does anyone know what is the optimal frequency to drive a bldc servo?
[18:05:25] <WillenCMD> does it very with the amplitude? or does it stay one frequency and only the amplitude is adjusted?
[18:14:03] <IchGuckLive> its more what your hardware and driver can sync
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[18:15:52] <IchGuckLive> witch one isit BLCD 4x 5x 6x
[18:16:51] <WillenCMD> i dont't follow?
[18:16:57] <WillenCMD> motor poles?
[18:17:07] <pfred1> I'm just here to check out a new terminal font
[18:17:26] <IchGuckLive> the blcd motor number ?
[18:17:37] <IchGuckLive> BLDC ofcause
[18:17:51] * pfred1 was thinking CD-ROM ...
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[18:20:27] <pfred1> wow i was just at this website yesterday and it is already gone! http://www.lagom.nl/lcd-test/subpixel.php
[18:20:33] <WillenCMD> <http://www.kelinginc.com/KL34BLS_125.pdf?
[18:20:41] <WillenCMD> thats the motor
[18:20:55] <WillenCMD> http://www.fairchildsemi.com/ds/FS/FSBB20CH60C.pdf
[18:21:00] <pfred1> DJ is the resident BLDC motor expert here I think
[18:21:08] <WillenCMD> i already messaged him
[18:21:15] <WillenCMD> he must be away
[18:21:55] <DJ9DJ> huh? ;)
[18:22:21] <pfred1> DJ9DJ djdelorie
[18:22:34] <DJ9DJ> hehe
[18:22:51] <WillenCMD> two user names?
[18:23:00] <pfred1> two DJs
[18:23:15] <WillenCMD> i messaged djdelorie
[18:23:29] <pfred1> he usually is in late
[18:23:34] <WillenCMD> he has already done something close to what im trying to do.
[18:24:10] <pfred1> this font ain't too bad
[18:24:43] * pfred1 is running urxvt -rv -fn "-gnu-unifont-medium-r-normal--16-160-75-75-c-80-iso10646-1"
[18:25:04] <pfred1> I need someone to speak arabic or mandarin
[18:26:43] <pfred1> you know some gobbly goop like this 㓥㓦㓧 ꂕꂖꂗ ノハバ खगघ
[18:28:13] <djdelorie> I what who?
[18:28:36] <pfred1> djdelorie hey there you are someone had a BLDC question
[18:28:39] <DJ9DJ> hihi
[18:28:53] <cpresser> pfred1: this is japanese: ノハバ
[18:28:56] <IchGuckLive> WillenCMD: the max is 50k pulses per second to the motor
[18:29:06] <pfred1> cpresser yes I suppose it is
[18:29:31] <djdelorie> BLDC drive frequency, or any PWM frequency, is a tradeoff between smoothness of control (faster and more precise is better) and power efficiency (slower is better).
[18:29:32] <IchGuckLive> nanaotec on same config 48V 0.117Nm/A
[18:29:53] <djdelorie> Faster PWM may also limit the PWM resolution, too, as there's often an upper limit to clock speed
[18:30:32] <djdelorie> other than that, I haven't seen any rules of thumb for what khz to run at. Usually you want it to be above human hearing range, so 15kHz or more
[18:30:45] <cpresser> pfred1: it says "no-ha-ba". the first 3 signs may be japanese or chinese, cant tell for sure since i am not that much into kanjis. but you can join #nihongo and ask :D
[18:30:48] <pfred1> when I made my stepper motor drivers I monkeyed with the PWM width
[18:30:49] <IchGuckLive> WillenCMD: nanotec hase waveforms for better performences
[18:31:46] <pfred1> cpresser yeah me no haba either but I like to be able to see the characters
[18:32:04] <djdelorie> As for choosing voltages and frequencies for a specific BLDC motor, you could go with the same 32*sqrt(mH) that steppers use
[18:32:20] <djdelorie> and set the frequency at whatever your driver will support
[18:33:03] <djdelorie> mine run at 20 kHz because that's the most the driver supports, but that leaves me with only 4000 PWM "steps"
[18:34:39] <WillenCMD> the bridge's max switching frequency is 20khz
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[18:35:19] <djdelorie> that chip is very much like mine
[18:35:31] <djdelorie> I run mine right at 20 kHz
[18:35:41] <pfred1> nice round number
[18:35:59] <djdelorie> and you can use 50 nS for the math in the innermost control loop :-)
[18:36:11] <pfred1> maybe you can
[18:36:46] <pfred1> I can't even decide anymore if I like my fonts how they are now or not
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[18:37:18] * pfred1 has been running X Window for so long he can't even remember what nice font rendering looks like!
[18:37:18] <ReadError> any solidworks users here?
[18:38:20] <pfred1> I'm convinced that when the Debian devs want anti-aliasing they just smoke another joint now
[18:38:37] <pfred1> looks fuzzy to me man!
[18:39:25] <jackc> ReadError: ya
[18:40:41] <ReadError> jackc
[18:40:46] <ReadError> i modeled a part
[18:40:54] <ReadError> but its on the wrong axis
[18:40:57] <jackc> cool story
[18:40:59] <jackc> oh
[18:41:00] <jackc> sucks
[18:41:01] <ReadError> i saw 'top' and assumed it was the top view
[18:41:07] <ReadError> i need to flip everything ;/
[18:41:16] <jackc> why?
[18:41:23] <ReadError> because when im going to model it
[18:41:24] <rob_h> there is a rotate function for solidbodys
[18:41:30] <ReadError> oh there is?
[18:41:43] <jackc> there is somewhere, but CAM packages will let you rotate it also for various machines
[18:41:45] <rob_h> i think its called move.. but u can rotate with the same function too
[18:42:13] <rob_h> prob not on tool bar. look in the menu you will find it
[18:42:32] <rob_h> but as jackc says, if u wanna cam it, most let you define the Z top of model
[18:42:57] <rob_h> other wise ud have rotate it all the time to machine multi setups , or multiaxis parts
[18:43:02] <ReadError> yea, ide like to learn how to do it
[18:43:10] <ReadError> its a bit strange how 'top' is really the side view
[18:44:09] <pfred1> ReadError I'm convinced no one that has ever written a CAD program knows how to actually draw
[18:44:29] <pfred1> the two skills might be mutually incompatible
[18:44:33] <jackc> i still find solidworks to be the easiest to get real work done
[18:44:40] <rob_h> lol and iv rarly seen well drawn models in all the years too
[18:44:40] <ReadError> solid works other wise is very intuitive IMO
[18:44:55] <ReadError> much easier than the libre, freecad, autocad
[18:45:45] <pfred1> the last time i looked at freecad it seemed like a feudal german fiefdom to me
[18:46:03] <pfred1> ve vill not support imperial measurements!
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[19:19:18] <skunkworks__> http://www.youtube.com/watch?v=m3lWKGQuQoc
[19:20:37] <pfred1> skunkworks__ I like the hose clamp very stylish
[19:21:36] <skunkworks__> what ever it takes
[19:22:21] <pfred1> oh man they burned that blue foam? that stuff is lethal!
[19:23:11] <pfred1> ought oh Walt Disney is going to be phoning them from beyond the grave too
[19:23:33] <pfred1> don't ever knock off Disney images!
[19:24:20] <cradek> that's great! I wonder what branch they're using.
[19:24:28] <pfred1> every time Mickey is about to enter the public domain copyright laws gets rewriten it is called the Mickey effect
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[19:33:12] * djdelorie scored a whole tray of surplus motorized slide controls. 0.09 oz-in servos! :-)
[19:34:29] * archivist grmbls
[19:34:56] * jthornton sets off to set off the cannon
[19:35:00] <pfred1> djdelorie one step closer to your ironman suit goal?
[19:35:20] <djdelorie> tin man, with these servos
[19:35:31] <pfred1> well they can be for the fingers
[19:35:57] <pfred1> crushes aluminum foil
[19:37:15] <djdelorie> the motors are strong enough to move the sliders and not much more than that
[19:37:19] <djdelorie> but they're fun to play with :-)
[19:37:26] <pfred1> heh
[19:37:53] <pfred1> what are they for a laser setup to move mirrors or something?
[19:38:05] <pfred1> tiny mirrors
[19:38:06] <djdelorie> audio mixing console
[19:38:12] <pfred1> oh yeah to move the pots
[19:38:18] <pfred1> I'
[19:38:24] <pfred1> I've seen those
[19:38:25] <djdelorie> these *are* those pots, with motors
[19:38:32] <pfred1> sweet
[19:38:37] <pfred1> now you can really be a DJ
[19:39:06] <djdelorie> I got five free DVD players to take apart too, so five steppers, five BLDC motors, and five sets of linear rails.
[19:39:20] <djdelorie> of course, it's got a 2 inch working range... :-P
[19:39:23] <pfred1> I saw some monster CD changers at a flea market yesterday
[19:39:34] <pfred1> I kinda felt sorry for the saps selling them
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[19:41:08] <pfred1> I passed on an old cast iron hand miter box I felt bad about it
[19:41:22] <pfred1> I couldn't think of where I'd put it in my garage
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[19:42:28] <pfred1> I should have bought it
[19:42:55] <archivist> build another shed
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[19:43:19] <pfred1> archivist just as soon as you find the cure for lime disease
[19:43:41] <pfred1> I hate going back there
[19:43:49] <archivist> you dont have to use wood!
[19:43:53] <pfred1> lyme whatever it is
[19:45:09] <pfred1> what I worry about is the bugs in the woods
[19:45:48] <archivist> the side for my next shed will be pvc
[19:46:01] <archivist> sides
[19:46:13] <JT-Shop-2> mice love to chew pvc over here
[19:46:52] <pfred1> gawd
[19:47:02] <pfred1> I remember the hanta virus scare
[19:47:24] <archivist> seen the little bastard eating some plastics, not heard of them feeding on the window/door frame material
[19:49:07] <archivist> nice easy run of the engine today, the breakdown...the charity box lock
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[19:54:13] <JT-Shop-2> I'd bet you had some tools to open that
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[19:55:05] <archivist> JT-Shop-2, visitor knocked it over, we got into it ok but the bolt broke off
[19:55:32] <archivist> Ive just fixed it ready for tomorrow
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[20:02:07] <JT-Shop-2> archivist: looks like this steam engine kit is more of a puzzle on how to hold the parts to machine them than anything else
[20:03:21] <Tecan> if you put a drop of liquor on a scorpion it will instantly go mad and sting itself to death.
[20:03:49] <archivist> JT-Shop-2, yes part holding is often the best bit
[20:04:16] <archivist> for various values of best
[20:05:22] <pfred1> Tecan if you beat them with a broom you get to drink the booze yourself
[20:07:25] <archivist> JT-Shop-2, worth reading some of the construction series in mags like Model Engineer for work holding clues
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[20:10:09] <JT-Shop-2> archivist: thanks for the tip
[20:12:06] <archivist> JT-Shop-2, except they are often struggling with the wrong size/type of machine
[20:14:34] <pfred1> big machines can do small work but small machines can struggle doing big work
[20:16:04] <archivist> I find the machine itself gets in the way of seeing the item Im working on
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[20:18:20] <pfred1> archivist the collet I have for my mill is like that
[20:18:33] <pfred1> just means I need a different collet though
[20:21:14] <alex4nder> hey
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[20:48:04] <ReadError> hey alex4nder
[20:48:10] <ReadError> any pics of your coolant setup?
[20:55:25] <DJ9DJ> gn8
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[20:59:11] <alex4nder> ReadError: not yet, I needed to return the pump, because the fittings to it sucked
[20:59:18] <alex4nder> I'll post up a video of the filter though.
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[21:58:23] <skunkworks> cradek: http://bcove.me/xs5xlrfo
[21:58:39] <skunkworks> Love that group
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[22:25:20] <alex4nder> haha
[22:25:26] <alex4nder> the new mill controller is alive!
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[22:34:11] <pfred1> I really missed my calling in life I could have been a computer breaker
[22:36:19] <alex4nder> it could be
[22:36:22] <alex4nder> join someone's QA department.
[22:37:50] <Tecan> http://i.imgur.com/xAlCc.gif
[22:38:00] <pfred1> yeah it'd be like a dream to wreck stuff then say OK here it is figure it out
[22:38:15] <Tecan> http://i.minus.com/iPjFCSyvbjw7J.gif
[22:38:34] <alex4nder> pfred1: well a good QA person can recreate the problem on a whim, and document the issue.
[22:39:09] <pfred1> alex4nder give me a little time and I'll create some kind of a problem I always do
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[22:39:20] <SolarNRG> evening
[22:39:34] <alex4nder> pfred1: so a QA career could be yours
[22:46:01] <pfred1> I just got done fixing my alsamixer which I managed to totally bork up somehow
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[22:49:39] <r00t4rd3d> heh
[22:49:50] <r00t4rd3d> very problematic software that is
[22:50:19] <pfred1> I can break anything more complicated than hello world
[22:50:27] <r00t4rd3d> sure
[22:50:41] <r00t4rd3d> try goodbye world
[22:51:03] <pfred1> at least it got me off my font kick for a little while
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[22:54:34] <pfred1> it takes me so long to get into the acceptance stage with PCs I swear
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[23:25:52] * robin_sz stretches
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[23:35:40] <skunkworks__> logger[psha]:
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[23:43:43] <ReadError> TOOLPATH Y U SO HARD TO MAKE
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[23:58:49] <gravity_> Hello everyone, I have a quick question. I just set up my soft limits and hard limits (switches). They all seem to work well, however when I do a worst case scenario test of the machine hitting the hard limits, it goes into estop like it should. However, I do not know how to move it after it does that. I've been disconnecting power and manually moving it an inch or so.
[23:59:09] <gravity_> Is there a way so that when I hit max limit X I will still be able to travel in the negative X direction? Or will the hard stops do just that, hard stop it?/