#linuxcnc | Logs for 2014-01-11

[02:20:37] <Deejay> moin
[06:38:40] <jthornton> oh boy an end to the cold and wet for a few days
[07:06:22] <archivist> grr postal services, sample gear for me to copy http://www.collection.archivist.info/archive/DJCPD/PD/2014/2014_01_11_Cyprus_gear/IMG_1732.JPG
[07:07:04] <Loetmichel> archivist: so get the CA glue out
[07:07:05] <Loetmichel> ;-)
[07:07:24] <jthornton> wow that is bad
[07:07:50] <archivist> looks like a weeks puzzle to put it back together
[07:10:23] <archivist> someone wants new gears to fix these fleabay 380804568164
[07:25:31] <jthornton> new one http://gnipsel.com/glade/index.html
[08:20:17] * jthornton can create an xml file in python... yea
[08:20:59] <archivist> now you have two problems :)
[08:21:31] <jthornton> what's that
[08:22:14] <archivist> many joke about the additional problems xml brings
[08:22:37] <jthornton> oh for html you mean?
[08:23:05] <archivist> xml is for anything.... grr
[08:23:32] <jthornton> what do they joke about then?
[08:23:38] <archivist> a bit like pdf cures all doc problems...er no
[08:24:29] <archivist> xml has some gotchas, like describs xml in xml
[08:24:58] <jthornton> I don't understand
[08:25:31] <archivist> you will when you hit them
[08:27:12] <archivist> <xmlleftbracket><</xmlleftbracket> is very illegal
[08:27:54] <jthornton> I let xml.etree.ElementTree take care of that
[08:29:08] <archivist> I watch some in the library coding channel have fun with various libraries that are supposed to do whatever
[11:31:32] <IchGuckLive> Hi all B)
[11:32:19] <CaptHindsight> +1C today, almost beach weather
[11:32:49] <IchGuckLive> Almost O.o
[11:32:52] <Jymmm> Yes, Hell has frozen over... http://www.huffingtonpost.co.uk/2014/01/06/lake-michigan-frozen-ice_n_4549317.html?utm_hp_ref=mostpopular
[11:33:43] <IchGuckLive> Question are all the big lakes connected by channels
[11:34:01] <IchGuckLive> if only been to niagra fals in 85
[11:34:26] <IchGuckLive> 10cents to pass the bridge to Canada
[11:35:51] <syyl_ws> hmm#
[11:35:58] <IchGuckLive> Tom_itx: still in estop mode ?
[11:36:17] <syyl_ws> there is now way linuxcnc can preview the code lines entered in the mdi?
[11:36:40] <IchGuckLive> use MDI to Prog
[11:43:43] <tom_R2E3> Hello. Does anyone know of an example MPG hal file which uses mesa 7i77 and mode 3 (to count encoder on pins 16-20)?
[11:47:54] <JT-Shop> http://www.gnipsel.com/linuxcnc/configs/7i77.html
[11:48:11] <JT-Shop> you have two encoders?
[11:49:28] <tom_R2E3> I only have one
[11:49:38] <tom_R2E3> but the card supports two I thought?
[11:49:53] <CaptHindsight> IchGuckLive: yes, they are, you can sail from the Atlantic all the way to Chicago
[11:50:38] <JT-Shop> yes it does but you only use 16-17 or 18-19 for the other one
[11:50:41] <CaptHindsight> IchGuckLive: you can actually take a boat from the Atlantic all the way to the Mississippi and down to the Gulf
[11:51:23] <IchGuckLive> CaptHindsight: Thanks
[11:52:14] <tom_R2E3> OK. John do you have the hal file that goes with your HAL MPG tutorial block diagrams? (http://www.gnipsel.com/linuxcnc/hardware/mpg.html)
[11:53:06] <JT-Shop> I will after while, I still need to change mine lol
[11:53:22] <tom_R2E3> ok
[12:17:57] <CHNCguy> hey hey everyone ;)
[12:18:29] <zeeshan> anyone use longs motors yet?
[12:18:29] <zeeshan> :D
[12:19:09] * JT-Shop goes to take a nap
[12:20:00] <CHNCguy> hey does anyone know if a regular quadrature encoder can be used as a spindle feedback encoder?
[12:20:59] <eric_unterhausen> why not?
[12:21:01] <archivist> I would say yes
[12:21:18] <eric_unterhausen> depends on the speed of the spindle and the max rate at which the counter can count transitions
[12:21:30] <eric_unterhausen> otherwise it's only a mounting problem
[12:22:23] <archivist> lathe/mill? and if threading one needs an index pulse
[12:22:25] <CHNCguy> well i its a 1000ppr encoder and the speed is up to 6k
[12:22:35] <CHNCguy> lathe
[12:22:46] <eric_unterhausen> what electronics?
[12:23:12] <JT-Shop> CHNCguy, I use the original encoder on my CHNC
[12:23:37] <CHNCguy> mesa 7i76
[12:24:07] <JT-Shop> I have a 5i20 with daughter cards on my CHNC
[12:24:19] <eric_unterhausen> 100000 counts/sec
[12:24:21] <JT-Shop> the 7i76 has a spindle encoder input
[12:25:49] <IchGuckLive> zeeshan: not in europ
[12:27:30] <zeeshan> IchGuckLive: ah
[12:27:40] <zeeshan> i think ill just get another set of motors from automationtechnologies then
[12:27:45] <zeeshan> lots of people on the forums like them.
[12:27:48] <eric_unterhausen> mesas can handle millions of transitions/sec so should be good at 1000 count encoder at 6000 rpm
[12:28:08] <CHNCguy> sorry im back. the encoder is stock, but on my 2nd one i dont have the encoder but i have a ballscrew encoder it fits fine too ;)
[12:28:37] <IchGuckLive> zeeshan: are you in the USA
[12:28:39] <CHNCguy> cool thanks
[12:28:41] <zeeshan> canada
[12:29:03] <CHNCguy> anything special i have todo when wiring the encoder JT-Shop
[12:29:05] <IchGuckLive> zeeshan: witch part french english
[12:29:09] <zeeshan> english
[12:29:36] <eric_unterhausen> I just ordered a hot end for my 3d printer
[12:30:27] <CHNCguy> thanks guys ttyl ;)
[12:31:40] <IchGuckLive> zeeshan: search for the GB24H288
[12:32:25] <IchGuckLive> zeeshan: in canada available 40CAD
[12:32:41] <zeeshan> ebay?
[12:35:53] <IchGuckLive> zeeshan: i think you got al the fancy stuff inside
[12:45:01] <IchGuckLive> eric_unterhausen: the 3d print services are so cheep dont waste your time
[12:46:38] <IchGuckLive> zeeshan: what mashine type is it plasma Mill Lathe
[12:46:50] <zeeshan> IchGuckLive: i am currently working on a lathe to start off with
[12:46:56] <zeeshan> then next will be my plasma table
[12:46:59] <zeeshan> and then the mill
[12:47:18] <zeeshan> using the lathe as a learning experience :P
[12:47:38] <zeeshan> the 570oz in steppers are for the plasma.
[12:47:39] <IchGuckLive> lathe i woudt go for a 21000 version so 8Nm or 680Oz
[12:47:46] <zeeshan> i already bought 1200oz in steppers for the lathe
[12:47:55] <zeeshan> from automationtechnologies
[12:48:01] <IchGuckLive> ok thats fine
[12:48:09] <IchGuckLive> now go up to 75V
[12:48:11] <zeeshan> i wanted to oversize just so i don't lose stepps
[12:48:20] <zeeshan> im using 2 72V switched supplies
[12:48:20] <IchGuckLive> and you are at the front end
[12:48:39] <IchGuckLive> 1 shoudt be ok
[12:48:47] <zeeshan> you thinkso?
[12:48:52] <zeeshan> each motor draws 7A
[12:49:26] <zeeshan> the power supplies are rated to 8A
[12:49:29] <IchGuckLive> this stepper does not need the full amP
[12:49:39] <IchGuckLive> you can hang up 2 of them
[12:50:02] <zeeshan> if im running both axis at full torque
[12:50:04] <IchGuckLive> zeeshan: that is the learn effect
[12:50:10] <zeeshan> then they'll draw 7A each?
[12:50:16] <IchGuckLive> no
[12:50:26] <zeeshan> please explain!
[12:50:51] <IchGuckLive> the phase that is driving takes 3.5*0.7Amp
[12:51:08] <IchGuckLive> you necer got all phase on power
[12:51:21] <IchGuckLive> so it can handle 2 motors
[12:51:24] <zeeshan> OHH
[12:51:32] <IchGuckLive> at may 25feet cable
[12:51:36] <IchGuckLive> max
[12:51:44] <zeeshan> so at any given pulse, 1 phase per motor is powered
[12:51:55] <IchGuckLive> yes
[12:52:14] <zeeshan> why the 0.7 factor?
[12:52:37] <zeeshan> even without the .7 factor
[12:52:39] <zeeshan> 3.5*2
[12:52:43] <zeeshan> 1 power supply can easily handle 2 motors
[12:52:50] <IchGuckLive> the phase divider for the Linduction
[12:52:53] <zeeshan> okay ill just use the other power supply for the miling machine.
[12:53:21] <IchGuckLive> for the toolchanfger turret use 48V
[12:53:30] <IchGuckLive> and small driver
[12:53:39] <zeeshan> i'm not using a turrent!
[12:53:44] <zeeshan> i'tll be a very basic cnc lathe
[12:53:50] <zeeshan> it'll have tachometer for index pulse
[12:53:54] <zeeshan> and 2 axis control
[12:54:07] <zeeshan> im using a quick change tool post to manually change tools
[12:54:08] <IchGuckLive> ok up to you
[12:54:52] <zeeshan> IchGuckLive: you've done some conversions?
[12:55:21] <IchGuckLive> on mashines no i build from block
[12:55:30] <zeeshan> oh wow
[12:55:32] <zeeshan> that's cool
[12:55:59] <IchGuckLive> http://www.youtube.com/user/magic33de/videos
[12:58:48] <IchGuckLive> ok its late here in germany on saturday eveníng i need to go to a party BYE
[13:58:42] <tjtr33> novena: an open source laptop with RPI headers, pwm out, ananlog in, via fpga http://www.kosagi.com/w/index.php?title=Main_Page#Novena
[13:58:47] <tjtr33> seen on gloem.de
[14:00:28] <tjtr33> pcw_home, ^^^ designed by bunnie! maybe your standard ending message is working
[14:05:55] <CaptHindsight> he used one of the Samsung ARM soc's
[14:08:14] <tjtr33> A9
[14:09:12] <CaptHindsight> nobody is going to build them
[14:09:15] <tjtr33> would it be good to ask him to boot the live cd ( or image ) to see latency
[14:09:53] <tjtr33> ah
[14:10:22] <CaptHindsight> but there is another <$100 samsung exynos board
[14:10:47] <CaptHindsight> by hardkernel
[14:11:21] <CaptHindsight> http://www.hardkernel.com/main/main.php
[14:12:22] <CaptHindsight> http://www.bunniestudios.com/blog/
[14:12:59] <tjtr33> 60$ odroid-u3 wow
[14:13:42] <CaptHindsight> http://www.kosagi.com/w/index.php?title=Novena_Main_Page schematics and gerbers are here
[14:13:52] <CaptHindsight> for the bunnie laptop
[14:14:40] <CaptHindsight> tjtr33: cubieboard is another low cost one
[14:15:14] <CaptHindsight> the arm soc is only $6 from allwinner with 2 cores at 1Ghz
[14:15:41] <CaptHindsight> and it has a decent GPU
[14:16:08] <CaptHindsight> http://cubieboard.org/
[14:16:10] <tjtr33> CaptHindsight, i got the Qb, i best wait you PCW&your work on fpga
[14:16:27] <CaptHindsight> yes, just starting
[14:16:35] <tjtr33> thx!
[14:16:37] <CaptHindsight> Udoo is another
[14:16:53] <CaptHindsight> memleak was helping with the Udoo last night
[14:17:09] <tjtr33> isnt andypugh working with the udoo?
[14:17:10] <CaptHindsight> so there should be a few supported boards soon
[14:17:26] <CaptHindsight> yeah
[14:18:04] <tjtr33> (heads off to bust up cast irom bathtub :)
[14:18:28] <CaptHindsight> imx6 quad core, Vivante graphics and a SAM3 so it's arduino compatible
[14:18:44] <CaptHindsight> http://shop.udoo.org/usa/product/udoo-quad.html
[14:19:44] <CaptHindsight> I wish the BBB had a better GPU
[14:21:11] <tjtr33> whats your thoughts on seperating cnc control computer from gui user front end computer?
[14:22:20] <CaptHindsight> it works fine for those applications
[14:22:49] <CaptHindsight> I guess it comes down to why you want to do that or what you're trying to do
[14:23:13] <CaptHindsight> why use an ARM board instead of a x86 board?
[14:23:27] <eric_unterhausen> I like splitting the two functions
[14:24:42] <CaptHindsight> for a lowest cost appliance controller board that would run Linuxcnc then ARM + FPGA
[14:25:05] <tjtr33> i know that splitting is a revered programming concept ( basis of tcl/tk ) but if & where to cut the baby in half is best considered by those in the know of new hardware ( so, i ask )
[14:26:13] <tjtr33> (now really off to swing hammer :)
[14:26:19] <CaptHindsight> the BBB seems to be working fine
[14:27:03] <CaptHindsight> yeah, the roll up door to the shop keeps breaking
[14:27:14] <tjtr33> oh, MIT has some nice arduino with real servo and encoder stuff bye bye
[14:27:34] <CaptHindsight> have to anchor it back to the concrete wall today
[14:38:03] <tom_R2E3> hello
[14:38:29] <tom_R2E3> i'm struggling to wire up a MPG2 to mesa 7i77
[14:39:22] <tom_R2E3> i've changed the mode of 7i77 to mode 3, connected the encoder to pins 16&17, then connected ground and 5v
[14:39:59] <tom_R2E3> if I run linuxcnc then show hal config I was watch the 7i77 pin with the encoder connected and it counts!
[14:40:47] <tom_R2E3> however, i've connected the other buttons - Enable, select axis and select scale - but when I watch these pins in hal config then dont change
[14:40:53] <tom_R2E3> they*
[14:41:19] <tom_R2E3> any ideas appreciated
[14:54:52] <pcw_home> tom_R2E3: You need to make sure these pins are connected to
[14:54:54] <pcw_home> an appropriate data source and have the expected values:
[14:54:55] <pcw_home> axis.N.jog-counts
[14:54:57] <pcw_home> axis.N.jog-enable
[14:54:59] <pcw_home> axis.N.jog-scale
[15:00:31] <tom_R2E3> ok
[15:01:01] <eric_unterhausen> win 8 is probably the most annoying thing ever
[15:01:12] <tom_R2E3> but they dont need to be connected to see a state change for the 7i77 pin when I watch in hal config?
[15:01:35] <tom_R2E3> e.g there are two wires for an e-stop switch on the pendant
[15:01:43] <eric_unterhausen> I bought a code reader for my prius, and I'm trying to log in so I can install the software that came with it
[15:03:23] <tom_R2E3> if I connect one to 5v and the other to input-30 on the 7i77, shouldn't that show when I watch pin 30 in hal config?
[15:19:21] <pcw_home> probably not, depends on the field power (5V will no trigger a 24V input)
[15:20:52] <pcw_home> if you have 24V field power, use 24V for the switch
[15:21:08] <tom_R2E3> ah ok, thanks
[15:21:20] <eric_unterhausen> microsoft helpfully uninstalled chrome, but IE will not start on this computer because the resolution is too low
[15:22:33] <pcw_home> Well thats nice of them
[15:23:05] <JT-Shop> http://www.gnipsel.com/linuxcnc/hardware/mpg.html
[15:23:42] <Tom_itx> JT-Shop did you notice my alternative to your pause/resume routine?
[15:23:44] <tom_R2E3> Prius and windows 8, should all just be plug and play surely
[15:23:47] * JT-Shop only has a minute here
[15:23:56] <pcw_home> You might think a cell phone OS like WIN8 would get along with small displays
[15:23:57] <JT-Shop> Tom_itx, no
[15:24:28] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/cnc/configs/sherline/pause_resume.txt
[15:24:29] <JT-Shop> tom_R2E3, is the diagrams hard to follow?
[15:24:37] <Tom_itx> works under 2.6 where the original one borked
[15:25:03] <JT-Shop> the toggle2nist fails in master?
[15:25:10] <Tom_itx> either that or toggle
[15:25:25] <Tom_itx> it took an extra AND gate due to a startup fault
[15:25:32] <Tom_itx> pair of AND gates
[15:25:47] <Tom_itx> http://tom-itx.dyndns.org:81/~webpage/cnc/configs/sherline/new_pause_resume1.jpg
[15:25:52] <Tom_itx> flow diagram
[15:26:09] <JT-Shop> probably doing what toggle2nist does but with more components
[15:26:14] * JT-Shop is gone
[15:35:05] <tom_R2E3> IT WORKS!
[15:36:16] <tom_R2E3> JT - I had followed it, I hadn't understood/ had forgotten that the field voltage on 7i77 was the reference for all TB7 & 8
[15:36:58] <tom_R2E3> I had field voltage of 24v and was trying to get pins to work with 5v circuits, i'm a dumbass
[16:32:26] <Deejay> gn8
[17:12:40] <Jymmm> WOOHOO The laser is on the LAN... FINALLLY
[17:12:52] <andypugh> Any sharks?
[17:13:05] <Jymmm> andypugh: Yes, hang on...
[17:14:14] <Jymmm> andypugh: http://i48.tinypic.com/ea096f.jpg
[17:14:51] <andypugh> Is that a lego shark?
[17:14:59] <Jymmm> andypugh: And parrot too http://i56.tinypic.com/2a6k1gh.jpg
[17:15:38] <Jymmm> andypugh: I have no idea, just a pic I found years ago =)
[17:15:53] <Jymmm> both of those actually
[17:16:09] <andypugh> I can't decide if it is a real parrot
[17:16:25] <Jymmm> It's a Sun Conure
[17:18:56] <andypugh> I was meaning more in the sense "alive"
[17:19:06] <Jymmm> it is =)
[17:21:01] <eric_unterhausen> I wish mcmaster would keep order history around longer than 2 years
[17:21:31] <eric_unterhausen> trying to decide if I only ordered 2 motor couplings
[17:21:42] <eric_unterhausen> or if I should keep looking for another
[17:21:50] <Jymmm> eric_unterhausen: They do, when you order more in two years =)
[17:22:13] <eric_unterhausen> that seems silly
[17:22:24] <eric_unterhausen> I wonder if I kept the invoices
[17:28:50] <eric_unterhausen> I didn't keep the invoices either
[17:48:39] <Jymmm> I scan to pdf EVERYTHING now