#emc | Logs for 2012-01-06

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[00:11:13] <andypugh> clytle374: RTAI + EMC2 from scratch is a challenge. neo-technical had instructions which worked for one particular kernel and one particular RTAI, but anything else is beyond my ken.
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[00:14:05] <clytle374> do you have those instructions? I've read everything I've found
[00:14:13] <clytle374> But things are NOT consistant
[00:14:49] <clytle374> I went 32 bits but can't get the rtai tests to run
[00:15:04] <andypugh> http://code.google.com/p/neo-technical/wiki/emc2ubuntu
[00:15:34] <andypugh> Out of date, wrong version etc, but those instructions do actually create a bootable kernel.
[00:19:25] <clytle374> Thanks, it's the most current thing I've seen so far.
[00:27:45] <andypugh> He does seem to know his stuff. There is an email address on the main page. He does seem to really know his kernel stuff, but I get the impression that he did what he wanted to do, and moved on. He made it look easy, but I suspect that getting all that right took him a few all-nighters
[00:31:25] <clytle374> yeah, with only how-tos and little findable knowledge on the subject, it works or it don't and you don't know why
[00:31:50] <clytle374> The silent failures on the 64bit system was a complete dead end
[00:38:29] <cradek> perhaps look for help from the rtai project, instead of emc people?
[00:38:55] <cradek> lots of non-emc people use it (and they generally have to build it, because they don't get a nice bootable install cd from their project)
[00:39:22] <A2Sheds> neo is working on RTAI quite a bit, including ARM
[00:40:09] <A2Sheds> neo is memleak
[00:40:57] <A2Sheds> andypugh: you can ring me if you need neo/memleak
[00:43:09] <andypugh> A2Sheds: Thanks, but personally I am now happy with the mainline distribution.
[00:44:30] <clytle374> The problem I was having was only showing up in emc, so I was asking here.
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[00:50:12] <A2Sheds> clytle374: what problem are you having?
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[00:51:35] <clytle374> It was a couple days ago, I've since started over with a 32 bit install.
[00:52:45] <A2Sheds> 64 bit works/worked, might just have been the kernel version you were using
[00:54:10] <clytle374> I tried 2
[00:54:29] <clytle374> latest for magna and then vulcano
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[01:56:05] <skunkKandT> drilling drilling drilling...
[02:00:39] <tom3p> keep them doggies movin' rawhide!
[02:08:01] <skunkKandT> re-purposing a fixture plate.. about 80ish holes (1/2 tapped when all done)
[02:08:10] <skunkKandT> (angle plate)
[02:08:42] <skunkKandT> 2 inch on center
[02:09:36] <skunkKandT> * 1/2 inch tapped holes
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[02:13:37] <clytle374> anyone here try to run an 3 phase generator off a electric motor?
[02:13:41] <clytle374> It don't work well
[02:14:10] <skunkKandT> why not?
[02:14:54] <clytle374> rpm sags to easy I think. The regulator board in the generator has a low freq cut out
[02:15:16] <skunkKandT> sound like the motor your using to run it isn't high enough HP
[02:15:43] <clytle374> 50hp on a 40kva gen... running to Milltronics lathes
[02:15:50] <clytle374> 2 milltronics
[02:16:18] <clytle374> spindle drives kick out on deaccel
[02:16:52] <clytle374> right when they put power back in as the rpm drops to the commanded level
[02:17:16] <skunkKandT> 50hp motor?
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[02:17:36] <clytle374> yep, just replaced a 30hp thinking it would help
[02:17:59] <skunkKandT> 3 phase? 50hp?
[02:18:35] <clytle374> yep, running off a phase converter ;)
[02:18:42] <clytle374> I didn't design it
[02:18:50] <skunkKandT> eww
[02:18:52] <skunkKandT> heh
[02:19:07] <skunkKandT> how many horse phase converter?
[02:19:39] <clytle374> phase converter #1 15hp, use made leg to spin up 30hp converter, use both to drive 50hp motor
[02:19:54] <skunkKandT> 1 phase -> phase converter -> 50hp 3phase motor -> 3 phase generator?
[02:20:19] <skunkKandT> so your starting with 15hp?
[02:20:38] <clytle374> yeah, the wall hanging all the elect panels is probably structially compromised
[02:21:55] <clytle374> I should get a picture for everyones enjoyment
[02:22:06] <skunkKandT> sound like perpetual motion ;)
[02:23:02] <clytle374> I hate to say it since he's the nicest guys ever, but that was his end goal.
[02:23:19] <clytle374> we had a long chat
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[02:23:54] <clytle374> when you blow the 200A main fuse, you add another 200A next to it
[02:24:01] <Ekkeri> theres no 2012 links in here: http://psha.org.ru/irc/
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[02:29:18] <Ekkeri> heh/lc
[02:29:23] <Ekkeri> fail. :)
[02:30:15] <clytle374> I have a working system. :) :) :)
[02:30:27] <clytle374> I must have been my kernel config
[02:30:37] <clytle374> THe one from here works http://wiki.linuxcnc.org/emcinfo.pl?EMC_Ubuntu91
[02:30:44] <clytle374> and everything else is the same.
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[02:30:53] <clytle374> Now to find what it was.
[02:31:01] <clytle374> And document it
[02:31:49] <Ekkeri> SMP?
[02:31:59] <clytle374> yep.
[02:32:00] <Ekkeri> I ordered D525, so is that something I will need?
[02:32:13] <clytle374> No use the disk.
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[02:32:23] <Ekkeri> umm.. ok
[02:32:53] <clytle374> This machine was built 100% from source... Because, well, I must hate myself ;)
[02:33:03] <Ekkeri> ok, that's nice :D
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[02:40:26] <tom3p> i've been choosing the 2011 link and hand editing to 2012 http://psha.org.ru/irc/%23emc/index-2012.html
[02:44:59] <Ekkeri> yup, that works, but still there isn't those links :)
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[03:28:10] <FinboySlick> Since a lot of you are electonic tinkerers... Anyone knows of equivalents to this? http://www.digital-measure.com/html/web_voltmeter.htm Roughly the same price range and capabilities. This one looks pretty darn nice but I'd love to shop around before I commit to a large order.
[03:29:38] <jdhNC> looks relatively nifty, if you have a need.
[03:30:52] <FinboySlick> I like it, but I'm a bit worried about the Europe bit... It might collapse before I've ordered all the ones I need ;)
[03:31:13] <jdhNC> quite likely.
[03:31:28] <jdhNC> what is your application?
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[03:32:02] <Ekkeri> FinboySlick, right after USA?
[03:32:17] <FinboySlick> Monitoring of DIY backup battery sites for a small-ish telecom.
[03:32:32] <FinboySlick> Ekkeri: No, that'll collapse right after Europe ;)
[03:32:52] <FinboySlick> After all, they're the ones sending the bailout.
[03:33:05] <Ekkeri> I think my friend ordered USB voltmeter from there and it has been working ok
[03:33:45] <Ekkeri> I'm considering to order one for my elf too
[03:34:22] <Ekkeri> lol
[03:34:25] <jdhNC> what does one do with a usb voltmeter?
[03:34:43] <Ekkeri> my elf?
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[03:36:47] <FinboySlick> It's pretty much ideal for my application, I'll probably pick that one.
[03:37:34] <Valen> how much $?
[03:38:05] <FinboySlick> £60
[03:38:35] <Ekkeri> I would like to use it as a logger since my multimeter rs232 doesn't "work"
[03:38:43] * FinboySlick gets to use his £ key before it becomes completely useless ;)
[03:38:50] <Valen> lol
[03:38:54] <Valen> gtg
[03:38:56] <Ekkeri> well, it kinda works, I just don't know the speed etc. so can't get any real data from it
[03:39:03] <Valen> have the funs
[03:39:06] <jdhNC> what kind of meter?
[03:39:10] <Valen> why not just play with it a bit?
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[03:39:23] <Ekkeri> I tried
[03:40:00] <Ekkeri> every single baud rate I could find
[03:40:20] <Ekkeri> and tried some random parity settings and data & stop bits
[03:40:46] <Ekkeri> and tried to contact manufacturer, but they haven't responded yet
[03:41:04] <jdhNC> I have an ancient one that does serial, I think it is 300/7/e (old RS labeled meter)
[03:41:06] <Ekkeri> their software isn't working either :)
[03:41:18] <jdhNC> http://sine.ni.com/nips/cds/view/p/lang/en/nid/201986
[03:41:34] <jdhNC> I ended up with one of those, it's nifty for low-voltage stuff
[03:42:02] <Ekkeri> I would like to have used current function too, but well.. maybe some day :/
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[03:43:12] <Ekkeri> I think I will connect scope to it and measure baudrate, if that's possible
[03:43:31] <Ekkeri> it outputs something, so that's a good sign :)
[04:06:22] <A2Sheds> FinboySlick: what do they sell for?
[04:06:42] <FinboySlick> A2Sheds: 60Euro
[04:06:43] <A2Sheds> 60?
[04:07:13] <A2Sheds> you want an ethernet version?
[04:07:23] <FinboySlick> This is the ethernet version.
[04:07:32] <FinboySlick> I was just shopping around to see what's what.
[04:07:44] <FinboySlick> PacketFlux has something pretty cool too.
[04:08:08] <FinboySlick> Bit more expensive, but it has an enclosure and dual power input.
[04:11:42] <A2Sheds> http://www.sparkfun.com/products/7830 $50
[04:12:41] <FinboySlick> A2Sheds: I think the extra work around that might end up more expensive than the ready made ones.
[04:12:56] <A2Sheds> http://microcontrollershop.com/product_info.php?products_id=1922&osCsid=375a707d50cbdbd66df641e83385419c
[04:13:06] <A2Sheds> IIRC this has a few analog inputs
[04:13:44] <A2Sheds> or use a SPI temp module
[04:14:01] <A2Sheds> but, yeah, you're in the same price range
[04:14:11] <FinboySlick> With a lot of extra work.
[04:14:28] <FinboySlick> (well, comparatively, it's not all that complicated)
[04:15:05] <A2Sheds> how about old pc's with ethernet and motherboard temp sensors? cheap but big
[04:15:34] <A2Sheds> probably not what you are looking for :)
[04:15:36] <FinboySlick> And it would take a big chunk out of the battery's autonomy when the power is off.
[04:15:54] <A2Sheds> yeah, but it's cheap!
[04:16:37] <A2Sheds> these little micro boards are pricey
[04:16:40] <FinboySlick> http://www.packetflux.com/index.php?main_page=product_info&cPath=6&products_id=43
[04:17:02] <FinboySlick> If you use the ethernet port for scale, it isn't very big and it has all I need.
[04:17:09] <A2Sheds> $3 micro turned into a $40 board
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[04:19:39] <A2Sheds> http://www.futurlec.com/Mini_Ethernet.shtml
[04:20:20] <FinboySlick> A2Sheds: That still requires me to build all the voltage sensor, protection and temperature bits though.
[04:20:37] <FinboySlick> One-shot that's okay... But I have 80 of those to cover.
[04:20:52] <A2Sheds> http://www.futurlec.com/ET-AVR_Stamp.shtml
[04:21:29] <FinboySlick> Sheesh, that's awesome in and of itself though.
[04:21:39] <FinboySlick> an atmega 128, no less.
[04:23:09] <A2Sheds> for $10 more we're going to have an arm cortex a8 module 1.5GHz with 1 GB ddr3, 10/100 and few GB Nand flash
[04:23:19] <Tom_itx> what are we making?
[04:23:50] <FinboySlick> A2Sheds: When you say 'we'.... These are your boards?
[04:23:59] <A2Sheds> FinboySlick needs an ethernet thermometer
[04:24:08] <Tom_itx> oh
[04:24:10] <FinboySlick> A2Sheds: And voltmeter
[04:24:46] <A2Sheds> FinboySlick: I'm just designing the open hardware
[04:24:46] <FinboySlick> Amps wouldn't hurt either.
[04:25:24] <FinboySlick> A2Sheds: Still pretty awesome.
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[04:26:41] <FinboySlick> I'm off to bed... Thanks for showing me that site though, I'll be browsing.
[04:27:27] <A2Sheds> they ship in about 1-3 weeks ARO
[04:27:39] <A2Sheds> out of Thailand IIRC
[04:27:55] <FinboySlick> http://www.futurlec.com/DC_Opto_Output_8.shtml These suitable for pwm?
[04:28:13] <Tom_itx> yeah futurlec is slow shipping
[04:28:35] <A2Sheds> check the specs for speed
[04:29:40] <FinboySlick> A2Sheds: Hehe, that's actually what I've been looking for.
[04:29:47] <A2Sheds> http://www.datasheetcatalog.org/datasheet/Sharp/mXuzyxs.pdf
[04:30:19] <A2Sheds> 80 khz cutoff
[04:30:32] <A2Sheds> rise time 4-18us
[04:30:41] <A2Sheds> fall time 3-18us
[04:32:55] <A2Sheds> http://www.futurlec.com/Servo_Board.shtml $48 8-ch servo controller
[04:32:58] <FinboySlick> Thanks... Off to bed for real now.
[04:33:05] <A2Sheds> gnite
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[06:32:19] <clytle374> glad I got a chance to relax a while before realizing that while it did finish initializing the card, the watch dog still bit
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[10:53:42] <Guest75084> hi, is there a free Speeds&Feeds calculator for turning out there
[10:53:51] <Guest75084> for linux ofcourse
[11:13:47] <jthornton> you just need a spreadsheet and the formulas, plenty out in google land
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[11:33:08] <archivist> and knowledge of your lathes rigidity and the materials which effect speeds and feeds
[11:33:47] <jthornton> and your tooling
[11:35:55] <archivist> my Schaublin can throw chips over the tailstock, the starturn dies at the thought of throwing a chip
[11:37:25] <jthornton> my CHNC usually throws coolant at me when I open the door to peek in
[11:38:41] <jthornton> I need to replace the lexan I think
[11:41:12] <automata> is there a MODBUS RTU driver for HAL?
[11:41:38] <automata> I saw the hal compnent modbus but it seems to be a Modbus TCP component
[11:41:49] <jthornton> the GS2 component is modbus and classicladder has it as well
[11:42:07] <jthornton> I don't know what RTU or TCP is
[11:42:49] <automata> modbus can operate over Network (ethernet) connection or over serial + RS485
[11:43:34] <jthornton> I know the GS2 is serial then
[11:43:57] <automata> Ok
[11:44:05] <jthornton> RS232 I think
[11:44:32] <automata> So I could write a hal component for a fuji frenic mini on the same lines as the GS2
[11:44:42] <jthornton> I just hooked one up to my mill the other day :)
[11:45:35] <jthornton> maybe just mod the GS2 comp to suit
[11:45:40] <automata> GS2 has both Rs232 and RS485 attachments with GS-485HD15
[11:45:55] <automata> I am going to try that now...
[11:47:12] <automata> GS2 also has optional ethernet connection (from the datasheet: http://www.automationdirect.com/static/specs/gs2drive.pdf)
[11:47:35] <automata> How do you hook up the GS2? To the Rs232 port directly?
[11:48:00] <jthornton> yes from the serial port on the PC to the GS2
[11:48:27] <automata> So that is definitely RTU (or even ASCII)
[11:49:29] <jthornton> http://linuxcnc.org/docview/2.5/html/examples/gs2_example.html
[11:49:42] <jthornton> RTU is what I used from the example
[11:51:01] <automata> so RTU it is then...
[11:51:20] <automata> hopefully I will get the frenic mini up and running soon!!
[11:51:30] <jthornton> cool
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[11:53:07] <automata> I have operated a frenic mini from an ARM7 board before... so this process should go smoothly...
[11:53:25] <automata> I have coded the modbus RTU master on an ARM7...
[11:55:45] <jthornton> LOL, it took me all day to realize I didn't have the baud rate the same on the comp and the drive
[11:57:22] <automata> that must have been frustrating
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[11:58:52] <jthornton> yea, worse was I didn't know where to start looking to see what was wrong
[12:09:49] <Guest75084> I searched a whole day for an error until I realized I messed up the wiring on the Rs232 connector.
[12:10:07] <Guest75084> that was frustrating...
[12:12:36] <Guest75084> Is there a GUI using the Qt-Framework ?
[12:13:06] <jthornton> the most frustrating part was I wrote the example page for the GS2 with a working GS2 setup so it should have just worked
[12:13:19] <jthornton> I don't think so
[12:13:26] <jthornton> Glade yes
[12:19:31] <Ekkeri> I want rs485 too :/
[12:21:32] <Ekkeri> luckily my benchdrill have the same vfd, but it's 1-phase so it's easier to test with different hardware
[12:22:34] <Ekkeri> mill has hitachi, drill has omron, but they are both made by hitachi :)
[12:26:07] <Guest75084> I got a rs232 to rs485 adapter for 4$ and it works fine
[12:28:13] <automata> I just made a 2 wire RS232 to 485 converter for talking the VFD
[12:28:38] <automata> talking ot the VFD
[12:29:26] <Guest75084> how did you make it?
[12:32:31] <Guest75084> is there some documentation on how to write a GUI for EMC? The developer Manual dosnt capture that point.
[12:33:17] <Mjolinor> http://linuxcnc.org/docview/2.5/html/hal/pyvcp_examples.html#_gs2_rpm_meter_a_id_gs2_rpm_meter_a
[12:33:26] <Mjolinor> thats a sort of helper in that respect
[12:35:36] <Guest75084> Hmm I just wonder how Axis is communicating with EMC? Is it via HAL?
[12:35:45] <Mjolinor> yup
[12:36:19] <Guest75084> And were can I see those HAL connections that AXIS is making?
[12:36:20] <jthornton> I thought it was NML or something like that
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[12:36:37] <jthornton> there is a chap on the forum the rolled his own GUI
[12:37:16] <Guest75084> can you give me the link or a keyword for the search?
[12:37:24] <automata> I designed a PCB for it... in KiCAD
[12:37:35] <Guest75084> ah ok
[12:37:58] <automata> The circuit diagram can be found at many places on the web
[12:38:00] <jthornton> it is Mocca
[12:38:42] <jthornton> http://linuxcnc.org/index.php/english/component/kunena/?func=view&catid=41&id=1813
[12:38:51] <automata> I designed my own GUI for EMC2 too ... on Windows!!!
[12:39:17] <automata> talks to EMC over a telnet (like emcrsh)
[12:39:58] <automata> I made a NML server that translates the NML commands to an ASCII protocol
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[12:43:19] <Guest75084> so the way to go is via NML?
[12:50:50] <automata> EMC talks only NML... NML is a messaging framework (like DBUS which is used in the Linux Kernel).
[12:51:33] <automata> NML enables realtime communications between multiple processes (the processes need not be running on the same computer)
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[12:52:10] <automata> There are NML implementations for all major operating systems and there is one for JAVA too for the minor OS's
[12:52:25] <automata> NML may have lost some steam though recently
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[12:54:45] <automata> EMC is a loose collection of programs (emc HAL axis etc)...
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[12:55:15] <Guest75084> what does NML stand for?
[12:56:53] <automata> these programs talk to each other via a standard interface provided by NML (Neutral Messaging Language)
[12:57:06] <jthornton> http://linuxcnc.org/docview/2.5/html/code/NML_Messages.html
[13:00:59] <Guest75084> how does AXIS get the ToolPath for visualization? I dont see anything suitable in the NML message list
[13:04:45] <automata> it querries the NML buffer for a status update every 1- 10ms (I think) and if there is a change from the previous value, it puts it in a buffer and plots it on the screen
[13:06:03] <Guest75084> no I mean if I open a G-Code file it already shows the toolpath even if I havent moved the machine yet
[13:06:13] <Guest75084> how does it do that?
[13:08:51] <automata> That is a gcode plotter... it parses the gcode file and then plots the Gcode firectly
[13:10:40] <archivist> Guest75084, if you zoom in you can see differences where the trajectory planner rounds a corner
[13:12:13] <jdhNC> is there any way to make axis single step through the file (for visualization)?
[13:14:41] <jthornton> the single step button
[13:15:11] <jthornton> or the T key
[13:15:14] <jdhNC> oh, I thought that actually stepped through the executed code.
[13:15:34] <jthornton> I misunderstood your question
[13:15:59] <jthornton> just open up a sim and single step it there and watch the back plot
[13:16:22] <jdhNC> can the sim version coexist?
[13:17:16] <jthornton> yea, but you can't run them both at the same time
[13:17:27] <jthornton> bbl
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[13:18:09] <Guest75084> thanks for the answers
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[15:03:39] <robin_sz> how come you can never find the used equipment you want when you want it, and when you don't .. you will be falling over people trying to sel it to you
[15:05:06] <jdhNC> Because.
[15:05:26] <robin_sz> anyone got a reflow oven they don;t want?
[15:05:53] <automata> I got a conventional oven that I want to get rid of!! ;-)
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[15:06:11] <automata> I have used it in the past for doing reflow work!!
[15:06:50] <robin_sz> yeah, I have done small protypes in a toaster oven
[15:07:02] <robin_sz> ambient for pre and post heat,
[15:07:03] <Mjolinor> it is a fundamental law of the universe. Like that one that says no matter how long you save soemthing because it is useful you will not need it until a week after you throw it away
[15:07:06] <robin_sz> grill for reflow
[15:07:18] <robin_sz> but our conveyorised oven is playing up
[15:07:30] <robin_sz> need to get another one in
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[15:38:59] <automata> nearly done with Frenic VFD hal component...
[15:40:11] <automata> that was easy!!
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[18:12:40] <IchGucksLive> Hi all around the globe
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[18:31:48] <A2Sheds> tempting to try http://www.ebay.com/itm/380400230904?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
[18:31:52] <IchGucksLive> maybe this will be the neyt boost step . pycam proggers are on the seen already
[18:32:44] <IchGucksLive> A2Sheds: this is realy old stuff
[18:32:57] <IchGucksLive> with balls moving outwards the system in a tube
[18:33:13] <A2Sheds> the type used for leveling a trailer
[18:34:35] <A2Sheds> but 2 for $15
[18:34:49] <IchGucksLive> nice price
[18:35:05] <A2Sheds> 96 pairs in stock
[18:35:45] <IchGucksLive> will be interesting to mount this with the turned 45 deg
[18:37:24] <IchGucksLive> this gives you 15inch of trevel
[18:38:01] <A2Sheds> acme lead screws are 2x the price at that length
[18:38:20] <IchGucksLive> agree
[18:38:42] <IchGucksLive> but ballscrews are different at some types
[18:39:27] <IchGucksLive> this maybe give you not the expected result its a try at this price
[18:42:55] <A2Sheds> I'm just stepping .1mm in one direction with 2Kg load
[18:44:18] <IchGucksLive> go for it and be happy with them
[18:46:08] <A2Sheds> what's the cheap brand of t-slot in Germany? 80/20 is the low end supplier here
[18:47:46] <IchGucksLive> there are more i got a manufacturer in 20km range
[18:48:25] <A2Sheds> Bosch has a distributor near me but it's always the most expensive
[18:48:27] <IchGucksLive> Extrusion Plant
[18:48:45] <IchGucksLive> minitec.de
[18:49:11] <A2Sheds> I've seen it at the trade shows
[18:49:36] <IchGucksLive> we will be also in Febr in California
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[18:57:24] <Loetmichel> re @ home
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[19:00:26] <IchGucksLive> someone nowes if i can get the free HDD space from the ubuntu system partition
[19:03:26] <cradek> df
[19:04:09] <IchGucksLive> 98% worth
[19:04:35] <IchGucksLive> shit
[19:04:54] <skunkworks> cradek: does the mailing list reply seem correct
[19:06:02] <skunkworks> correctish
[19:06:13] <cradek> skunkworks: the docs about that are quite good: http://www.linuxcnc.org/docs/devel/html/gcode/gcode.html#sec:G61-G61.1-G64
[19:06:52] <tom3p> IchGucksLive, use the gui 'disk usage analyzer' to find the hogs, and work on reducing the big categories
[19:07:51] <IchGucksLive> thanks
[19:09:07] <cradek> skunkworks: (and I don't know of any significant TP changes in the last several years, not sure what elson remembers hearing)
[19:10:24] <tom3p> or du -h ~ then sort it out
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[19:11:50] <skunkworks> cradek: thanks!
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[19:54:48] <jdhNC> anyone know how to find/order an ATX power supply that has remote AC input?
[19:56:15] <A2Sheds> vs a long power cord?
[19:58:53] <jdhNC> the case has the PS mounted in the front (deep rackmount case), the power input is on the back.
[19:59:35] <archivist> the case supplier should know
[19:59:37] <cradek> sounds weird. did you try asking the case manufacturer?
[19:59:47] <jdhNC> no clue who they are
[19:59:51] <cradek> yuck
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[20:00:51] <jdhNC> vendor supplied computer. just has 'made in canada' stickers all over it.
[20:02:41] <archivist> is the original supply still there
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[20:03:28] <jdhNC> yeah, but searching the model (emacs HP2-6460P) doesn't turn up anything that appears to have remote power entry
[20:05:17] <archivist> is it a normal one with a local mod adding the remote
[20:05:59] <jdhNC> possibly, it has a normalish looking warranty sticker sealing the case
[20:06:25] <cradek> true, that sounds like a really easy mod
[20:06:47] <jdhNC> the incoming AC wire is nicely grommeted and the cutout looks 'factory'
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[20:13:00] <archivist> probably just a modded case to special order, keeping the model number so they dont need to go through testing again
[20:14:07] <jdhNC> it's a huge 4U case, lots of fans. Has three GHz digitizers for ultrasonic data collection.
[20:14:15] <jdhNC> and currently worthless.
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[21:03:40] <A2Sheds> jdhNC: will a standard ATX supply fit in its place? Could you add the AC cord from the old supply?
[21:04:24] <A2Sheds> or is it really weird with mounting holes in odd places and whatever else different?
[21:22:52] <jdhNC> a normal one would fit. There is an add-on bracket that it mounts on. I'm sure I could open up a plain PS and add the AC wire
[21:23:31] * skunkworks would just splice the cord...
[21:23:41] <jdhNC> can't splice it.
[21:23:56] * skunkworks has thousands of ac computer cords - assumes everyone else does also
[21:24:20] <cradek> future you would sure like it if current you would fix it for the future too
[21:24:39] <jdhNC> I'd like to just order 5 spares and be done.
[21:25:11] <jdhNC> I have six systems, they were a little over $110k each
[21:25:36] <jdhNC> so, it silly to be screwing around splicing wires in to a PoS atx power supply
[21:45:20] <Tom_itx> silly to have PoS supplies in $110k equipment
[21:48:50] <jdhNC> may not even be the problem. There is a 24-20 pin adapter from the PS to the backplane. Three of the 3.3V wires were charred at the connection to teh adapter.
[21:49:13] <Tom_itx> not a good sign
[21:53:56] <jdhNC> nope. Dunno if the adapter wasn't fully seated on that side, or if something was just sucking up current.
[21:54:12] <jdhNC> the PC was running at the time, the digitizers just quit working.
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[22:34:48] <Loetmichel> jdhNC: You know that ATX 20/24 pin plugs are rated for less than 20 connects/disconnects?
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[22:35:27] <Loetmichel> these "molex type" plugs are the last crap on earth, especially for high currents
[22:36:02] <Loetmichel> i had LOTS of charred atx connectors /cables/ adapters
[22:37:10] <Loetmichel> ... ok, most of them in MIL-STD-810F-equipment ;-)
[22:37:24] <Loetmichel> but a few in normal Bureau computers
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[22:40:12] <andypugh> Hi WallE. Of course, a lot of people are on both channels
[22:40:38] <WallE> tx a lot andrypugh
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[23:37:47] <andypugh> Does anyone know of a really compact 9 (or more) pin connector? Bulkhead to cable? ie less that 5mm high and 10mm long?
[23:38:17] <andypugh> (I may end up potting pin sockets directly into the part)
[23:38:31] <ds3> is flex an option?
[23:38:50] <andypugh> Not really.
[23:39:10] <andypugh> Well, it might be. What do you mean by "flex"?
[23:39:19] <ds3> what about those 1mm pitched ribbon connectors then?
[23:39:24] <ds3> flex like what is on LCDs, etc
[23:39:32] <ds3> fragile, not for multiple insert/removal cycles
[23:39:38] <ds3> but very compact
[23:39:55] <andypugh> This would be for many insertions. (spindle nose tooling)
[23:40:40] <ds3> 1mm pitch stuff is probally the best bet then
[23:40:50] <ds3> donno if they are rugged enough
[23:42:37] <andypugh> I suspect I would be better going for flying leads and cable-mount.
[23:42:55] <ds3> aren't flying leads pretty big?
[23:43:25] <andypugh> I have some 4mm 9 core cable, I can glue it into the parts.
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