#linuxcnc | Logs for 2015-05-18

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[02:05:21] <Deejay> moin
[02:11:24] <Jymmm> howdy Deejay
[02:11:40] <XXCoder1> yo
[02:22:29] <XXCoder1> holy crap
[02:22:37] <XXCoder1> a sec
[02:23:15] <XXCoder1> http://hackaday.com/2015/05/13/printing-photorealistic-images-on-3d-objects/#more-155318
[02:34:53] <harold> you guys have any opinion on the tormach pcnc 770? for about $7000, it seems decent right? - http://www.tormach.com/product_pcnc_770_main.html
[02:35:15] <MrSunshine> that is some cool stuff right there =)
[02:35:18] <XXCoder1> interesting machine
[02:35:31] <XXCoder1> I saw em at old training job
[02:35:39] <XXCoder1> its quite effective for small jobs
[02:35:49] <XXCoder1> ironically you can get bigger for less
[02:36:06] <XXCoder1> used ones though
[02:36:08] <harold> XXCoder1: that particular model of tormach (the pcnc 770)?
[02:36:25] <XXCoder1> yup that machine
[02:36:30] <harold> oh, interesting, I wonder if I can get a pcnc770 used...
[02:36:31] <XXCoder1> never had chance to run it though
[02:37:03] <XXCoder1> so cant really say its awesome or whatever
[02:44:07] <harold> the page says: 26" x 8" Table
[02:44:35] <harold> does that basically mean that the x-y dimensions of a part i can mill are those? that is what the word 'table' implies, yeah?
[02:44:57] <XXCoder1> yeah
[02:45:09] <XXCoder1> workspace is 16"x8"x(unknown)"
[02:45:28] <XXCoder1> looking at machine I guess z can be in very least 3 inches
[02:45:34] <XXCoder1> definitely more
[02:45:52] <XXCoder1> z depends a lot on tool length
[02:46:12] <XXCoder1> *26" lol sorry on typo
[02:48:25] <XXCoder1> http://www.wired.com/2015/05/future-wind-turbines-no-blades/
[02:48:27] <XXCoder1> amazing
[02:48:41] <XXCoder1> wonder if I can build one lol (assuming I has actual skills)
[03:17:59] <MattyMatt> get jacques cousteau's boat, and sail it up and down the harbour pulling a chain
[03:19:05] <MattyMatt> if you can do sails without canvas, you can do windmills without blades. it stands to reason
[03:19:25] <XXCoder1> :P
[03:20:39] <MattyMatt> http://www.ebay.co.uk/itm/Large-Job-Lot-of-Measuring-Equipment-Engineering-Tools-Micrometers-v/311362145768
[03:21:22] <MattyMatt> dunno if I'm ever gonna be serious enough to need that many mics
[03:21:56] <XXCoder1> interesting
[03:21:59] <XXCoder1> scaling sizes
[03:22:03] <XXCoder1> from one in to more
[03:22:20] <XXCoder1> I only has one 1" one
[03:22:37] <XXCoder1> 2 calipers (one now retired, being chinese shit one)
[03:23:11] <MattyMatt> same here. if it doesn't fit on the lathe, why measure it? :)
[03:23:30] <XXCoder1> well measure your head very accurately lol
[03:23:40] <MattyMatt> I need a longer caliper
[03:23:46] <XXCoder1> me too
[03:23:57] <XXCoder1> 6 inches isnt enough. (thats what she said too)
[03:24:05] <MattyMatt> http://www.amazon.com/Neiko-01409A-Electronic-Conversion-Stainless/dp/B000EJUBBU/
[03:24:22] <MattyMatt> that's about as good as prices get for a 12"
[03:24:28] <XXCoder1> cheap
[03:24:37] <MattyMatt> (also, wss)
[03:25:45] <XXCoder1> mitytoyo one 40 inches one is $1,7400
[03:25:51] <XXCoder1> -0
[03:26:17] <XXCoder1> I used even larger one, it cost $10k lol
[03:27:04] <MattyMatt> does it adjust for relativity effects?
[03:27:17] <XXCoder1> lol
[03:27:30] <XXCoder1> it was large indeed, I think 5 feet
[03:27:33] <XXCoder1> or was it 4
[03:29:18] <XXCoder1> interesting http://ecatalog.mitutoyo.com/CERA-Caliper-Checker-Series-515-C1617.aspx
[03:29:29] <XXCoder1> I wonder if thats how companies cerified tools I use
[03:30:13] <XXCoder1> on amazon its 4.5k ouch!
[03:34:27] <MattyMatt> with sufficient employees that'd pay for itself. 1000x $6 caliper with $4.5 worth of calibration inhouse
[03:34:48] <XXCoder1> they do have bunch of in-house tools
[03:34:55] <XXCoder1> as well as employee bought tools.
[03:35:01] <XXCoder1> my two tools was certified
[04:09:52] <Valen> so what motors are people matching up with the mesa 8i20?
[08:12:28] * JT-Shop needs to make a snake resistant blue bird house now
[08:15:44] <skunkworks> wow - hard core snakes
[08:37:02] <JT-Shop> Black snakes can climb real well and a favorite food is bird eggs
[08:41:49] <Tom_itx> sunny & 61F
[08:41:58] <Tom_itx> rain the rest of the week
[08:45:34] <JT-Shop> rain sun rain sun rain etc. here
[08:49:16] <jthornton> expanding html docs http://gnipsel.com/linuxcnc/html/
[09:30:29] <zeeshan|2> looks good jt
[10:16:28] <zeeshan|2> is it a holiday in usa
[10:16:29] <zeeshan|2> ?
[10:22:43] <cradek> zeeshan|2: next monday is a us holiday
[10:22:49] <cradek> 25th
[10:23:14] <moorbo> friggen germany and holidays
[10:23:39] <zeeshan|2> ah
[10:23:51] <moorbo> oh
[10:23:58] <moorbo> it's a holiday in germany too
[10:24:00] <moorbo> I missed the us part
[10:35:35] <roycroft> we have hardly any holidays, so please don't complain about them
[11:02:18] * JT-Shop wonders why free PLC software would care what your name and company name is...
[11:03:08] <archivist> no such thing as a free lunch
[11:04:31] <archivist> trying to get you on a mailing list mebe
[11:27:33] <CaptHindsight> I think people are already taking off for vacations
[11:27:47] <CaptHindsight> overlapping with memorial day
[11:35:52] <jdh> JT: what free plc software?
[12:55:18] <JT-Shop> Automation Direct Click
[13:15:50] <Tom_itx> uneventful morning here it seems
[13:27:20] <skunkworks> Don't say that!
[13:46:36] <Tom_itx> pcw_home any idea how soon the 7i90 will be in stock?
[14:21:54] <Jymmm> Tom_itx: one day AFTER you really needed it ;)
[14:31:39] <jthornton> I can't believe my wife picked the uncut version of Das Boot out of the library to watch Saturday... we finished watching it last night 2 dvds
[14:32:58] <jdh> I just got a $5k plc software license
[14:33:20] <jdh> email address for a free one seems painless
[14:33:44] <jthornton> AB?
[14:33:55] <jdh> GE
[14:34:15] <jdh> Proficy. stupid name
[14:34:19] <jthornton> Click didn't ask for anything but a name and a company
[14:34:56] <Jymmm> free spam email addresses... http://mailinator.com/
[14:35:07] <jthornton> I've never programmed a GE... I've done AD, AB, Panasonic and some I don't even remember
[14:36:03] <PetefromTn_> I would like to understand how to program a PLC... its greek to me
[14:36:22] <jthornton> it's easy just remember last on wins
[14:36:55] <jthornton> or never have the same output as an out more than once
[14:37:35] <PetefromTn_> Yeah that is what I understand but I have never even seen one in person other than the LinuxCNC Classic Ladder sim.
[14:37:39] <jthornton> PetefromTn_, you can use Classic Ladder
[14:38:34] <jthornton> come by the house I have them all over the place, on my desk, on shelves, in boxes etc.
[14:38:36] <Jymmm> jthornton@spambooger.com
[14:38:47] <PetefromTn_> LOL
[14:39:03] <Jymmm> http://jthornton.spambooger.com/
[14:39:06] <PetefromTn_> what are you doing with them all?
[14:40:07] <jthornton> I use them for my work
[14:40:27] <Jymmm> how weird
[14:41:22] <Jymmm> Eh, this works though... http://jthorton.mailinator.com/
[14:48:49] <jdh> you can buy a dev one cheap. or any AD one cheap
[16:22:14] <Deejay> gn8
[16:35:41] <Valen> So, what motors are people using with the 8I23?
[17:00:11] <micges> Valen: 8i20?
[17:01:13] <Valen> ...probably lol
[17:02:07] * furrywolf needs a 7i76e
[17:02:16] <furrywolf> I was going to work on my enclosure more today, but it's drizzling.
[17:02:46] <micges> 7i76e is great, 7i77e will be greather
[17:03:21] <micges> Valen: https://www.youtube.com/watch?v=2HdikHRXnAs
[17:03:43] <Valen> heh yeah I saw that one
[17:03:59] <Valen> I don't think I want to see the hal for that one lol
[17:04:07] <furrywolf> is great? do you have one spare? :)
[17:05:10] <micges> got just one for hostmot2 driver improvements/tests
[17:05:30] * furrywolf has been wanting one for roughly forever, but has exactly no spare cash
[17:05:55] <Valen> oh, the 8i20 is only run by serial not the standard 50 pin interface?
[17:06:06] <micges> Valen: yes it's quite complex hal
[17:06:11] <micges> yes
[17:07:35] <Valen> hmm, so that chain is probably going to be amongst the better ways of running the whole thing then?
[17:07:48] <Valen> though I'm not too keen on the ethernet stage in there to be honest
[17:08:17] <micges> it's in stable working stage
[17:08:37] <micges> even with quite emc noisy machines
[17:08:46] <furrywolf> ethernet is great if, like me, you have a small portable mill and plan on controlling it with a laptop.
[17:09:14] <furrywolf> I'll have to try it over wifi just for the heck of it, although I suspect it's a very bad idea. :)
[17:09:18] <Valen> we are planning on pouring a new slab for it that weighs 1000kg ;->
[17:09:41] <micges> Valen: https://www.youtube.com/watch?v=Hg-ZH-gYd7w
[17:09:42] <Valen> don't you still have latency issues even if you are over ethernet?
[17:10:18] <Valen> (wrt using laptop for control of servo machine)
[17:10:50] <furrywolf> my laptop has excellent latency as long as I don't do anything that triggers any of its internal power management, or initialize any hardware video acceleration after starting linuxcnc.
[17:11:03] <micges> you must carefully choose hw for ethernet, and latest firmwares have dpll which corrects timing even with quite large latencies
[17:11:05] <furrywolf> I'm using it with a parport bob with, if I remember right, a 15us base thread.
[17:11:13] <Valen> yeah opening new openGL stuff seems bad
[17:11:17] <Valen> dpll?
[17:11:55] <furrywolf> _any_ power-management-related activity causes a many-ms hiccup... even changing screen brightness.
[17:13:08] <micges> Valen: http://en.wikipedia.org/wiki/Phase-locked_loop
[17:14:26] <Valen> I know what a pll is ;-> I'm not seeing how it can help with the servo thread having latency?
[17:16:07] <micges> hostmot2 components syncs with dpll timer, not with servo timer, so stepgen generation and encoder velocity estimation is not varying with latencies
[17:18:17] <micges> in 2.7 you will can enable dpll for stepgen and encoder
[17:18:38] <Valen> doesn't really feel "optimal" though
[17:18:59] <micges> that reminds me that I must test and commit fixes for this to 2.7
[17:19:00] <micges> bbl
[17:19:11] <Valen> thanks for the help
[17:19:54] <micges> I could messed something up it's 1am here and I've got too many projects
[17:19:58] <micges> :)
[17:20:26] <micges> if you intrested with details ask Peter
[17:20:30] <Valen> I seem to recall mesa PCI cards with serial interfaces ?
[17:20:52] <micges> yes 5i21
[17:21:04] <micges> 12x rs422
[17:21:15] <Valen> that sounds more my speed
[17:24:59] <micges> furrywolf: generally laptop is bad idea to control machine, but I saw few models that behaves quite stable
[17:26:35] <furrywolf> micges: I've ran the latency test for days, and as long as I don't do one of those two things, it stays low... and I get no realtime errors when running except if I set the base thread down below 10us or so...
[17:27:20] <Valen> I'd love it if you could tell the realtime warning not to trigger for the first second ;->
[17:27:40] <Valen> I get big latency spikes when opening new openGL windows, like say starting axis ;->
[17:27:45] <furrywolf> if I trigger any power management, even changing the brightness or closing the lid, it hiccups for a very, very long time. if I initialize accelerated video, such as playing a movie, it hiccups briefly. if I try running off battery, it breaks horribly - time no longer means things, apparantly. I suspect it's doing some cpu speed changing and fucking up the times badly.
[17:28:10] <furrywolf> I didn't have any problems with opengl, but I didn't try complex things. accelerated video was the only thing that caused a problem.
[17:28:28] <Valen> try starting glxgears with latency test running
[17:28:59] <furrywolf> no problem at all, even starting multiple glxgears with it running.
[17:29:20] <Valen> interesting, when I do it I get 30K spikes
[17:29:20] <micges> Valen: good idea, open feature request so it won't be forgotten
[17:29:40] <Valen> micges: for what?
[17:29:54] <Valen> oh delay latency error report?
[17:29:55] <furrywolf> Valen: not triggering for the first second
[17:30:15] <micges> dealy rt warnings for one second
[17:30:27] <Valen> where should I give said feature request?
[17:30:30] <furrywolf> I have an odd laptop... an old panasonic toughbook. everything about them is odd, so odd firmware is quite possible too.
[17:30:47] <micges> www.sf.net/projects/emc
[17:31:15] <Valen> A tick box to allow for RT warnings to continue being displayed would be nice too
[17:31:25] <micges> tickets-> feature request
[17:31:52] <Valen> to my mind that should be on by default (if you are always getting RT errors its something you should know about, and something could change to cause that to happen without you knowing)
[17:32:00] <Valen> feature request incoming
[17:32:06] <Akfreak-iPad> guys I need some help
[17:32:20] <Akfreak-iPad> have a tinyG v8
[17:32:45] <furrywolf> that I agree with. some kind of periodic "you've had 232423 realtime errors in the last minute" would be a good idea. several people here have had problems with poor machine control, and on questioning, they got a realtime error at startup, but they didn't realize it was an ongoing thing that was screwing up timing.
[17:32:57] <Akfreak-iPad> does the FW define dual y axis steppers
[17:33:58] <furrywolf> I have no idea what that is, or how it relates to linuxcnc.
[17:34:02] <Akfreak-iPad> building a OX and it has a dual PSU setup?? how's that setup
[17:34:08] <Akfreak-iPad> of snap
[17:34:22] <Akfreak-iPad> baro ng channel
[17:34:29] <Akfreak-iPad> wrong channel
[17:34:42] <furrywolf> ... ok
[17:36:15] <Akfreak-iPad> I put in #emc for CNC zone and get this channel
[17:36:33] <Valen> emc is what linuxcnc used to be called
[17:36:41] <Akfreak-iPad> darn google
[17:37:01] <Akfreak-iPad> so the tinyG is some unknown POS controller?
[17:37:28] <Valen> dunno, got a link to something about it?
[17:37:36] <Akfreak-iPad> brb
[17:37:51] <furrywolf> until they got threatened by a random new company, but lawyers are expensive, so it's easier to change your name than prove you're right.
[17:38:10] <Akfreak-iPad> https://github.com/synthetos/TinyG/wiki/Connecting-TinyG
[17:38:17] <Valen> sometimes I wish I was a billionair
[17:39:19] <Valen> looks like it is something that eats gcode
[17:39:21] <furrywolf> that's how big-vs-small works in court... even if you win, you still lose.
[17:39:56] <Valen> 99% sure it was search engine optimisation they were after
[17:40:24] <Valen> which is funny because I bet most of the results for searching for their brand and cars or whatever it is are going to be things about how they are asshats
[17:41:04] <Akfreak-iPad> I wish they had an IRC for the project, buts like like 2 years since any dev on that project
[17:41:15] <Valen> Akfreak-iPad: looks like that thing is basically doing the same thing as emc does
[17:41:24] <furrywolf> trim pots rotate between 8pm and 4pm, eh? is this one of those 24-hour wall clocks? :)
[17:41:37] <Valen> but on an aurdino or whatever rather than in a PC
[17:41:38] <Akfreak-iPad> yep 8 and 4
[17:42:00] <furrywolf> Akfreak-iPad: my point is the PM. 12-hour clocks don't have am/pm on the dial. lol
[17:42:18] <Valen> wifey's watch does
[17:42:19] <Akfreak-iPad> this is my first CNC build, but have done many Rambo 3d printer pupils
[17:42:22] <Akfreak-iPad> build
[17:42:25] <Akfreak-iPad> s
[17:42:38] <Valen> but it doesn't make an difference to the angle lol
[17:42:41] <Akfreak-iPad> lol
[17:43:00] <Akfreak-iPad> yeah kind of silly
[17:43:03] <furrywolf> ... it speaks json? lol
[17:43:41] <Akfreak-iPad> I used .json to create 3d models for gui's
[17:44:17] <Akfreak-iPad> for the CleanFlight project
[17:44:35] <furrywolf> but, yeah, that looks like it speaks gcode directly, and does not in any way work with linuxcnc.
[17:45:00] <Valen> how did you get to here Akfreak-iPad?
[17:45:34] <Akfreak-iPad> how do I define dual y axis motors? in the FW config. h file?
[17:45:47] <furrywolf> although you might submit that as a feature request... a hardware driver that outputs stupidly basic g-code to be processed by a hardware controller. someone was in here the other day asking about using another hardware controller than only handled lines natively and relied on software to break arcs etc up into lines...
[17:45:50] <Akfreak-iPad> google.. I saw a forum post
[17:46:45] <Valen> hmm, I'll have to run a latency test on one of my customers servers at some point ;->
[17:46:53] <Akfreak-iPad> thus IRC is very active, so I hoped someone might help me understand a few basic things
[17:46:57] <Valen> Dell T1100's are cheap ;->
[17:47:33] <andypugh> Akfreak-iPad: We know how to fo dual-Y in LinuxCNC, but no idea how to do it in Tiny-G
[17:47:59] <MacGyverX> For TinyG (or TinyG2) you can either make the changes in the FW (settings/what_ever_config there are a couple examples in there) or you can send the changes via the console.
[17:48:01] <andypugh> But the simplest way would be in hardware, wire both stepper drivers to the same step-dir outputs
[17:48:18] <Valen> btw the sourceforge page on opening a new ticket says to look http://www.linuxcnc.org/content/view/48/13/lang,en before doing so, but that is 404
[17:48:30] <Akfreak-iPad> thx guys
[17:48:52] <andypugh> Valen: Where is the broken link?
[17:49:07] <Valen> https://sourceforge.net/p/emc/feature-requests/new/
[17:49:11] <furrywolf> or wire both motors to one driver, if you have a sufficiently beefy driver. I'm fairly sure that one isn't, however.
[17:49:29] <Valen> if he has enough voltage he could wire them in series no?
[17:49:40] <Valen> that'd limit the RPM rather than the torque
[17:49:49] <andypugh> Ah, right, I can’t fix broken links on Sourceforge.
[17:50:05] <Akfreak-iPad> also I have dual 24v PSU's
[17:50:08] <furrywolf> it has a fixed 24v supply voltage, so my assumption would be never enough voltage. :)
[17:50:11] <furrywolf> I have 56V and I want more.
[17:50:28] <Valen> I'm thinking of using 8i20's furrywolf
[17:50:32] <Valen> we have 240v mains here
[17:50:39] <Akfreak-iPad> one for the spindle one for the steppers?
[17:50:47] <Valen> so bridge rectifier + beefy caps = ~380 volts or so ;->
[17:50:58] <furrywolf> lol
[17:51:01] <furrywolf> my drives have a 80
[17:51:11] <furrywolf> my drives have a 80V limit, and I used 75V parts elsewhere.
[17:51:14] <furrywolf> I might try 70V...
[17:51:28] <Valen> if its steppers it's probably not terrible
[17:52:04] <furrywolf> I top out around 1.8in/sec... need to use fancier leadscrews (machine not worth it), change belting (too much work), or raise the voltage...
[17:52:09] <Akfreak-iPad> it's an openbuilds OX CNC but bigger bed
[17:52:35] <Valen> dude, ballscrews
[17:52:39] <Valen> always ballscrews
[17:52:41] <Akfreak-iPad> it has g3 belts
[17:53:06] <furrywolf> see part about machine not worth it. :P
[17:53:25] <furrywolf> it's a chinese machine I got cheaply because it got knocked over with a forklift and bent in various directions.
[17:53:37] <Valen> linearmotionbearings2008 on ebay does ballscrews pretty cheap
[17:54:11] <furrywolf> I had to bend parts back into shape with the oxytorch...
[17:55:16] <zeeshan|2> andypugh: alive?
[17:55:58] <andypugh> Valen: You probably want to control the PSU with HAL. I did it in hardware but think the other way is better. 1) Don’t allow the machine to turn on unless the 8i20 bus voltage is low. 2) When the machine turns off, short-out the caps with a relay and a big resistor. The reason for 1) is that you don’t want to open the crowbar relay when there is still 300V DC through the relay.
[17:56:34] <zeeshan|2> http://i.imgur.com/A7NJRs6.png
[17:56:39] <zeeshan|2> think i can use one of these to make the barb
[17:56:50] <zeeshan|2> http://www.maritool.com/p2351/Woodruff-Keyseat-Cutter-1.250-X-.1875-Thick-%23-610/product_info.html
[17:56:55] <Valen> no admonishment to use a transformer for isolation? ;->
[17:57:22] <furrywolf> zeeshan|2: still trying to put fans in an oven? I've been repairing something with an even worse fan... a fan in an internal combustion engine cylinder.
[17:57:36] <zeeshan|2> furrywolf: nope, im using the environmental chamber as is :P
[17:57:43] <zeeshan|2> haha what
[17:57:43] <andypugh> You also want to make sure that you don’t power up the PSU with the crowbar relay closed. That leads to exploding resistors and case damage: https://picasaweb.google.com/108164504656404380542/PSU
[17:58:19] <Valen> did that punch a hole through the sheet metal?
[17:58:22] <furrywolf> my paslode impulse butane-powered nail gun has a fan inside the combustion chamber, exposed to combustion pressures and temperatures. :)
[17:58:46] <andypugh> Valen: I don’t have an isolation transformer in my machine. My PSU for my 8i20 is exactly as you describe.
[17:58:48] <Valen> what are you crowbaring?
[17:59:13] <furrywolf> it's the same idea as yours... motor on the outside, and a long, beefy bearing inside, sealing the pressure and isolating the motor from the temperature.
[17:59:30] <andypugh> Yes, a power resistor exploded violently enough to punch a hole in the case.
[17:59:57] <andypugh> I am discharging the scary 380V / 20,000 uF of caps.
[18:00:24] <Valen> R++?
[18:00:35] <furrywolf> I had a relay with 14.4V at ~infinite available current between the no and nc contact... worked great until one day it opened under a short-circuit, and formed a stable arc directly between the no and nc contacts. it stopped after there were no more contacts.
[18:00:47] <andypugh> 100W 10 ohm I think.
[18:00:48] <Valen> or were you having multiple shorts to bring the voltage down faster?
[18:01:23] <andypugh> Anything you can leave in-circuit all the time ends up either 250W or with a discharge of hours.
[18:01:50] <Valen> yeah, you wouldn't want to have anything left in it lol
[18:01:55] <andypugh> So I run a 10R 100W at 10x duty cycle for 1 second or so
[18:02:23] <furrywolf> zeeshan|2: so you're trying to machine the barbs from the end on a vertical mill, rather than turn them on a lathe?
[18:02:24] <Valen> seems like it should generally be ok
[18:02:47] <Valen> so what happened?
[18:02:49] <zeeshan|2> yes
[18:03:01] <zeeshan|2> using circular interpolation
[18:03:04] <zeeshan|2> with a taper
[18:03:04] <zeeshan|2> lol
[18:03:05] <furrywolf> why not tap the holes and use off-the-shelf barbs?
[18:03:11] <zeeshan|2> i dont want to
[18:03:14] <zeeshan|2> one piece is better
[18:03:33] <furrywolf> no, it's not. one piece means you have to make a new one when you mush the barb taking tubing off. :P
[18:03:36] <andypugh> Yes, it’s fine, as long as you don’t weld the relay contacts by trying to break at 300V then turn the power back on with the vrowbar resistor across the mains through the welded relay.
[18:03:51] <zeeshan|2> furrywolf: yes, will do that in this application
[18:03:52] <zeeshan|2> if that happens
[18:04:08] <Valen> ahh, so one relay stuck and the other then blew?
[18:04:11] <andypugh> Hence, use HAL to check 8i20 bus voltage, and HAL inputs to look at relay states.
[18:04:25] <furrywolf> what about a boring bar in the mill head, pointing in instead of out?
[18:04:31] <andypugh> It was the resistor that blew .
[18:04:39] <furrywolf> or out, I guess.
[18:04:47] <Valen> but there were still 2 relays involved?
[18:05:05] <zeeshan|2> furrywolf: damn it man! :P
[18:05:09] <zeeshan|2> i wanna use the milling cutter
[18:05:13] <furrywolf> or you could use the woodruff cutter. it'll work if you make a creative enough toolpath. :)
[18:05:13] <zeeshan|2> just wanna know if someone has done it before :D
[18:05:22] <zeeshan|2> trying to use what i have
[18:05:26] <zeeshan|2> with minimal time
[18:05:27] * furrywolf would tap
[18:05:39] <zeeshan|2> theres not enough room for a tap
[18:05:41] <zeeshan|2> 1/8 npt is too big
[18:05:50] <zeeshan|2> id need to make a custom fitting with a restrictor
[18:05:55] <zeeshan|2> if i made the overall fitting larger too
[18:05:56] <furrywolf> I have a few hundred 10-32 barbs
[18:06:08] <zeeshan|2> will run tapered only! :P
[18:06:13] <furrywolf> 10-32 threads on one end, different tubing sizes on the other end.
[18:06:21] <Valen> I think I'll try for a DPDT relay in that case, it should be able to negate that failure mode without involving more software
[18:06:23] <zeeshan|2> straight thread?
[18:06:25] <zeeshan|2> ew :P
[18:06:27] <furrywolf> yes
[18:06:30] <Valen> sound fair?
[18:06:52] <andypugh> Valen: Yes, one relay is operated by LinuxCNC and turns on the power, and when unpowered puts the crowbat resistor in circuit. The other relay is on a 555 timer (use HAL!) that initially charges the caps through a second resistor so tha the surge current doesn’t blow my breakers.
[18:07:14] <Valen> ahh, interesting I was thinking about how to do that
[18:07:49] <Valen> how much did your caps cost?
[18:07:58] <furrywolf> 10-32 is standard for small pneumatics components where 1/8npt is too large.
[18:08:07] <zeeshan|2> how does it lock in place
[18:08:17] <zeeshan|2> i'd need it to be a 1/4" barb
[18:08:24] <andypugh> So, HAL needs to disable user-enable-in intil 8i20 bus voltage is low. Then needs to operate the relay that bypasses the chargine resistor when the bus voltage is high.
[18:08:52] <furrywolf> 1/4 barb for 1/4 ID tubing or 1/4 barb for 1/4 OD tubing?
[18:08:58] <andypugh> Valen: Thet cost the original purchaser about A$300 each.
[18:09:03] <zeeshan|2> 1/4 for OD tubing
[18:09:15] <Valen> and you have a large number of them I'm guessing lol
[18:09:20] <furrywolf> and do you want shiny push-fit or plain ol' barb?
[18:09:29] <zeeshan|2> i want the barb style i have in the pic
[18:09:40] <furrywolf> http://www.bimba.com/Products-and-Cad/Hydraulic-Actuators/Inch/Accessories/FittingsPort-AdaptorsPins/Fittings/Barbed-Fitting/ 10-32 for 1/4 OD tube
[18:09:55] <zeeshan|2> how does it lock in place though\?
[18:10:06] <furrywolf> you tighten it?
[18:10:16] <zeeshan|2> this is on an engine
[18:10:25] <zeeshan|2> that stuff will come loose
[18:10:32] <zeeshan|2> i always use taper or loctite
[18:10:35] <zeeshan|2> but this seals coolant
[18:10:39] <zeeshan|2> so i dont know how well that'll work
[18:10:40] <furrywolf> you tighten it after applying loctite?
[18:10:48] <zeeshan|2> loctite doesnt make the greatest sealer
[18:10:53] <furrywolf> what the heck are you running cooling through that's so tiny you need miniature barbs?
[18:10:59] <furrywolf> the o-ring provides the sealing
[18:11:00] <zeeshan|2> they are vent lines
[18:11:17] <furrywolf> the ones I have have a little fiber washer that seals well
[18:11:26] <zeeshan|2> i wanted to run viton
[18:11:36] <zeeshan|2> i dont have those fittings either
[18:11:40] <zeeshan|2> and im trying to get it done tonight :)
[18:11:51] <furrywolf> lol
[18:12:09] <furrywolf> you'll probably need to manually code the toolpath for using a woodruff cutter to make hose barbs, but have fun.
[18:12:16] <zeeshan|2> no
[18:12:19] <zeeshan|2> i can do it in mastercam easily
[18:12:28] <zeeshan|2> just need to know if you can use that type of cutter to mill this way
[18:12:58] <furrywolf> mastercam is smart enough to figure out that it'll need to use the top corner of an odd-shape cutter to cut the undercut?
[18:13:10] <zeeshan|2> you do it in 2 tool paths
[18:13:29] <zeeshan|2> ill show you after im done
[18:14:02] <furrywolf> http://www.pneumadyne.com/tube-barb-straight-connectors-p-1805-l-en.html?language=en there's some for i/4 id tube
[18:14:03] <furrywolf> 1/4
[18:14:44] <furrywolf> " Captured o-ring design provides a superior seal" could use viton, since it takes o-rings, not washers like mine. :)
[18:15:45] <furrywolf> the cutter will work fine, if you can generate the right toolpath.
[18:18:06] <furrywolf> just be sure it isn't a project best served by rigid tapping. :P
[18:18:35] <andypugh> Valen: I bought 3 at £10 each. But none of them are quite so chap at the moment: http://www.ebay.co.uk/sch/i.html?_odkw=peh200+450V&_osacat=4662&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.Xpeh200+3300uf.TRS0&_nkw=peh200+3300uf&_sacat=4662
[18:19:15] <Valen> that's not actually as large as I thought it would be to be honest
[18:19:31] <Valen> I was just going to get a stack of smaller ones from local electronics suppliers
[18:19:38] <Valen> (physically large)
[18:19:51] <furrywolf> or turn them on the lathe to a press-fit for a hole in the main part
[18:19:58] <andypugh> You want low ESR for the application, though
[18:20:12] <furrywolf> a lot of cars use press-fit barbs on the throttle body and such
[18:20:28] <Valen> a buttload in parallel should be relativley low esr
[18:22:17] <andypugh> £10 each is looking like a real bargan compared to http://www.ebay.com.au/itm/Cap-Alu-Elec-3300Uf-450V-Screw-/111625426979?pt=LH_DefaultDomain_15&hash=item19fd64d823
[18:23:48] <andypugh> Yes, a real bargain! http://au.rs-online.com/web/p/aluminium-capacitors/3111181/
[18:28:12] <Valen> oh, don't get me wrong its a good buy
[18:28:12] <Valen> and far cheaper lol
[18:28:12] <andypugh> Don’t get _me_ wrong, I am just enjoying a gloat :-)
[18:28:12] <Valen> well thats just fine then
[18:28:13] <Valen> also being in australia nothing is ever cheep here
[18:28:13] <Valen> unless you like greasy wool ;-P
[18:28:13] <Valen> or iron ore
[18:28:13] <Valen> or basically anything else that is ripped out of the ground and not improved in any way
[18:28:13] <SpeedEvil> Valen: austrailians then
[18:28:13] <SpeedEvil> :)
[18:28:13] <andypugh> Opals are pretty. :-)
[18:28:13] <Valen> bet you a coke we ship them somewhere as ugly rocks for cents on the dollar
[18:28:13] <Valen> then somebody else polishes them and sells them for $$$$
[18:28:13] <Valen> I wish parts suppliers would let you graph stuff
[18:28:13] <Valen> Capacitance vs price
[18:28:13] <Valen> that would be usefull
[18:28:40] <Valen> also andypugh http://au.rs-online.com/web/p/aluminium-capacitors/1084986/
[18:28:52] <Valen> perhaps not that low ESR though
[18:29:03] <andypugh> 40V….
[18:29:11] <Valen> DOH!
[18:29:17] <Valen> I ticked 400v dangnabbit it
[18:30:54] <Valen> I was thinking of ripping the caps out of all the ATX power supplies I had floating around
[18:32:41] <andypugh> I wonder what the best source is? Maybe UPS-es with dead batteries?
[18:33:13] <Valen> mmmm, dunno the ones I've looked at didn't seem to have that much capactance in them
[18:33:14] <Tom_itx> motherboards
[18:33:23] <Valen> they are all low voltage Tom_itx
[18:33:29] <Valen> what motors are you using andypugh?
[18:33:33] <Tom_itx> what v are you wanting?
[18:33:37] <Valen> 400v
[18:34:06] <andypugh> Valen: Lenze 750w 300V servos
[18:34:20] <Valen> fancy, new or ebay?
[18:34:36] <andypugh> eBay, £50 for three of them.
[18:34:43] <Valen> god I hate you
[18:34:47] <Valen> in a nice way
[18:35:05] <furrywolf> I love my ultrasonic cleaner. when I get some money, I am definitely getting a bigger one.
[18:35:15] <andypugh> Then £750 for the milliing machine to use them, £120 for the connectors to attach cables…. A funny sort of bargain.
[18:35:26] <Tom_itx> what capacitance?
[18:35:49] <Valen> Tom_itx: lots +- 20%
[18:36:30] <Valen> andypugh: http://www.ebay.com.au/sch/i.html?_odkw=Lenze+750w+300V+servo&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.X750w++servo.TRS0&_nkw=750w++servo&_sacat=0
[18:36:40] <Tom_itx> http://www.ebay.com/itm/2x-NEW-KENDEIL-400V-820UF-35x60mm-LOW-ESR-HI-END-TUBE-AMP-AUDIO-CAPS-105C-/181459652521?pt=LH_DefaultDomain_0&hash=item2a3fd68fa9
[18:37:22] <furrywolf> http://www.ebay.com/itm/CRAFTSMAN/361274855352 I got one of those at the scrapyard, bought it with some scrap metal I was buying. it looked like shit. I had to get the thumbwheel glowing with the torch before I could get the screw to turn. took it apart, tossed it in the ultrasonic cleaner... it looks like I just bought it from craftsman.
[18:38:36] <SpeedEvil> That looks handy
[18:38:41] <andypugh> Valen: Bigger brothers of http://www.ebay.com.au/itm/331508638936
[18:38:44] <furrywolf> that's what I said!
[18:39:10] <Valen> andypugh: note the $ on that one still ;->
[18:39:22] <furrywolf> anything advertised as a high-end tube amp audio cap is either a) fake, or b) a ripoff.
[18:40:00] <Valen> hmmm, the power company may not like it
[18:40:08] <furrywolf> fakes are quite common, ranging from relabeling a crap chinese cap, to sticking a random tiny cap inside a large empty can...
[18:40:13] <andypugh> As well as £120 for the connectors I also had to write the driver for Mesa 3-phase PWM, the driver for the 7i49 resolver card and the bldc HAL component. All in all it was a funny sort of bargain :-)
[18:40:28] <Valen> but given all the stuff aimed at 110v power, I wonder about half wave rectifying our mains
[18:40:46] <Valen> andypugh: yeah but all that other stuff is good for me so you get warm fuzzies ;->
[18:41:10] <furrywolf> http://www.1000uf.com/ipaware/img/fake%20capacitor.jpg
[18:41:16] <Valen> that one you linked is AC isn't it? not having magnets in it?
[18:42:05] <andypugh> Permanent magnet AC servo. Resolver-feedback brushless
[18:42:56] <Valen> calling things AC and DC really starts to get not that pointfull at some point lol
[18:43:38] <furrywolf> a brushless dc motor an a synchronous permanent magnet ac motor have a lot in common... :P
[18:43:55] <andypugh> Valen: This giy has some interesting second-hand motor/drive combos: http://stores.ebay.com.au/faparts/
[18:46:17] <Valen> what is your mill andypugh?
[18:46:26] <Valen> got pics/videos of it in operatoion?
[18:46:45] <Valen> I haven't been that involved since you first started writing the bldc code
[18:46:49] <andypugh> Nice set of three here: http://www.ebay.com.au/itm/PANASONIC-1KW-AC-SERVO-DRIVER-MOTOR-MSD103A2V-MSM102A1D-3-AXIS-CNC-ROUTER-/261285057668
[18:47:19] <Valen> more than $50 though ;-P
[18:47:44] <andypugh> https://www.youtube.com/watch?v=X0celdfZmkA is my little Harrison Mill.
[18:48:25] <Valen> what acceleration can you pull?
[18:48:37] <andypugh> I am not sure.
[18:48:49] <Valen> is there meant to be a bearing mount on the end of that ballscrew?
[18:49:18] <andypugh> It’s a static screw.
[18:49:28] <Valen> I was just looking at that
[18:49:30] <andypugh> I put an end-plate on eventually.
[18:49:39] <Valen> you really are a glutton for punishment aren't you
[18:49:41] <furrywolf> ... mailman just dropped off the twistlock plug I bought on ebay. opened the box. the bubblewrap has bloody fingerprints on it.
[18:50:37] <Valen> ?
[18:50:59] <norias> !
[18:51:10] <andypugh> Valen: This is the end-plate casting, with integrated tightening and height measurement station: https://picasaweb.google.com/108164504656404380542/HarrisonMill?noredirect=1#5931801741237964866
[18:53:02] <andypugh> furrywolf: Like literally fingerprints that are made of blood?
[18:53:22] <furrywolf> yes
[18:53:31] <andypugh> Eeew!
[18:53:41] <furrywolf> yes
[18:53:49] <Valen> andypugh: nice
[18:54:01] <Valen> furrywolf: eww
[18:54:04] <furrywolf> my assumption would be they cut themselves packaging it and either didn't notice or didn't care.
[18:54:22] <furrywolf> bubble wrap and box now in garbage, and hands washed. heh
[18:54:48] <andypugh> You are very unlikley to catch anything from dried blood.
[18:57:36] <furrywolf> I'll head to the scrapyard tomorrow and pick up some wire, now that I have the special twistlock to fit my power box.
[18:58:29] <Rab> Viral hepatitis, maybe.
[18:59:35] <furrywolf> I'll wash my hands again before using my vibrator, then. :P
[19:00:00] * furrywolf wanders off to build fence post auger bit adapter
[19:01:14] <Valen> andypugh: did you do the casting yourself or something
[19:01:50] <andypugh> I made the pattern, but it was made by a cheap foundry I know of (£20)
[19:02:05] <Valen> I hate you a little bit more now lol
[19:02:11] <Valen> that would be $600 here
[19:02:28] <Valen> was it you who did the fire trucks?
[19:02:41] <andypugh> Have you checked? You might be surprised.
[19:02:57] <andypugh> I play about with a 1916 Dennis, yes.
[19:02:58] <Valen> yeah, they all have minimum orders of about that
[19:03:24] <Valen> might be worth asking around again for some bits we are doing now though I guess
[19:03:32] <Valen> (making a gantry mill)
[19:03:42] <Valen> well router
[19:05:33] <andypugh> For a foundry using sand moulds and with only one pattern provided there really is no saving in making bulk quantities. Every casting is a one-off so having a minimum order is silly.
[19:05:47] <Valen> admin costs I guess
[19:06:07] <Valen> companies in australia just don't like dealing with end users
[19:06:10] <Valen> we are too whiny
[19:06:43] <andypugh> Google finds: http://ironfoundry.com.au.223-27-30-180.iadsaustralia.com.au
[19:09:12] <andypugh> Right, time to sleep here
[19:09:16] <andypugh> Night all
[19:20:19] <Valen> http://hackaday.com/2015/05/16/2-stroke-engine-too-beautiful-to-behold/#more-156033
[19:26:59] <_methods> wow just watched the latest silicon valley
[19:27:05] <_methods> best apple maps joke ever
[19:32:24] <furrywolf> grrr. no fit! I bought two pieces of 1/8" flat bar at the local metal supply place. one is .120, the other .130.
[19:33:13] <furrywolf> is this within normal tolerances, or did they sell me crap metal?
[19:33:27] <_methods> well withing normal
[19:34:08] <furrywolf> ten thous is pretty crap variation...
[19:34:30] <_methods> it's hot rolled or cold rolled flat bar?
[19:34:49] <furrywolf> dunno.
[19:34:56] <_methods> lol
[19:35:13] <furrywolf> I asked them for 1/8 by 1 flat bar...
[19:35:33] <_methods> well that's pretty vague
[19:35:44] <_methods> paper or plastic lol
[19:36:01] <Valen> unless you get something marked as "precision" it won't be
[19:36:04] <Valen> it also wont be flat
[19:37:39] <furrywolf> it doesn't need to be precision... but it does need to not be substantially oversized.
[19:37:43] <zeeshan|2> is .004 ipr .375" axial doc too aggressive on a .375" roughing cutter?
[19:37:45] <zeeshan|2> in 6061
[19:37:48] <zeeshan|2> 3 flute
[19:38:24] <furrywolf> the tolerances on everything I got are crap, and add up to not fitting.
[19:39:00] <Tom_itx> zeeshan|2 why would it be?
[19:39:11] <zeeshan|2> when will i snap it
[19:39:12] <Tom_itx> ipt or ipr?
[19:39:15] <zeeshan|2> at how much ipt
[19:39:17] <zeeshan|2> ipt
[19:39:19] <furrywolf> the 1.5" by .180 wall square tube is only 1.130 instead of 1.140 id, and the flat bar is .130 instead of .125... the end result is it's .020 from fitting!
[19:39:31] <Tom_itx> zeeshan|2 you will know when you reach the limit
[19:39:35] <zeeshan|2> lol
[19:39:41] <zeeshan|2> i dont wanan break my only 3 flute rougher
[19:39:45] <zeeshan|2> in .375
[19:39:52] <zeeshan|2> like a tard i collected all these huge end mills
[19:40:06] <Tom_itx> should be fine i think
[19:40:08] <zeeshan|2> which are completely useless to me, cause most of the time i either need .25 or .75
[19:40:09] <zeeshan|2> er
[19:40:10] <furrywolf> nothing wrong with collecting tooling. :P
[19:40:14] <zeeshan|2> .375
[19:40:19] <zeeshan|2> 1/2 is useless, so is 3/4
[19:40:28] <zeeshan|2> (for all the parts ive done so far)
[19:41:04] <furrywolf> it feels like cold-rolled to me, as it's nice and smooth, but I didn't ask which it was.
[19:42:05] <Tom_itx> zeeshan|2 too big for your mill?
[19:42:09] <zeeshan|2> no
[19:42:14] <zeeshan|2> too big for what im machinin
[19:42:18] <Tom_itx> why are they useless then?
[19:42:24] <zeeshan|2> cause i rarely use them! :P
[19:42:30] <Tom_itx> get bigger jobs
[19:42:37] <zeeshan|2> the only time ive used the 1" cutter was for that throttle body work
[19:43:10] <Tom_itx> those ti parts we ran took a week
[19:43:29] <Tom_itx> 24/7
[19:43:48] <zeeshan|2> hah
[19:43:57] <zeeshan|2> man ive done all this cam tool path
[19:44:01] <zeeshan|2> and i feel like a tard now LOL
[19:44:07] <zeeshan|2> not sure how to fix this
[19:44:35] <Tom_itx> fix what
[19:44:39] <zeeshan|2> sec
[19:45:01] * Tom_itx punches his timecard
[19:46:09] <zeeshan|2> first i entertain you
[19:46:09] <zeeshan|2> http://i.imgur.com/vFHkS40.jpg
[19:46:52] <Rab> loooooooool
[19:46:55] <zeeshan|2> http://i.imgur.com/M73jV2g.png
[19:47:04] <zeeshan|2> poor fish
[19:47:21] <zeeshan|2> so thats after im done the tool path
[19:47:28] <zeeshan|2> its a 1.5" block to start with
[19:47:37] <zeeshan|2> im left with .25"
[19:48:18] <zeeshan|2> not sure how to get rid of the excess
[19:48:24] <zeeshan|2> i need to machine the parts individually after this
[19:48:47] <Tom_itx> the bottom is excess?
[19:48:53] <zeeshan|2> the rectangular part yes
[19:49:14] <zeeshan|2> what comes to my mind is bandsaw it
[19:49:19] <Tom_itx> how many you making?
[19:49:23] <zeeshan|2> just 4 for me :)
[19:49:27] <zeeshan|2> those 4 that you see
[19:49:41] <Tom_itx> cut them apart, flip em over and flycut it
[19:49:46] <Tom_itx> shell mill
[19:49:55] <zeeshan|2> how will i hole it
[19:49:57] <zeeshan|2> *hold
[19:50:01] <Tom_itx> you may have to cut some softjaws for that
[19:50:03] <zeeshan|2> would ike to use the vise
[19:50:09] <jdh> make an inverse first
[19:50:15] <Tom_itx> and hold them in the visejaws
[19:50:28] <Tom_itx> the 2 ovals should be the same
[19:50:38] <Tom_itx> the other two are opposite
[19:51:00] <Tom_itx> you don't need the whole profile, just maybe 1/4" of it
[19:51:08] <Tom_itx> on those anyway
[19:51:14] <zeeshan|2> hm
[19:51:18] <Tom_itx> you'll need a little more on the other 2
[19:51:22] <zeeshan|2> if i gotta make vise jaws, i might as well bandsaw it away
[19:51:27] <zeeshan|2> to individual pieces
[19:51:33] <Tom_itx> i would
[19:52:32] <Tom_itx> or grip the end of the top ones and mill em off (not the best idea)
[19:53:09] <Tom_itx> hold them horizontal with a stop and mill em off with a regular EM from the side
[19:53:36] <Tom_itx> all the same thickness you would only need one setup for that
[19:54:12] <Tom_itx> saw off most of the excess then do that
[19:54:24] <Tom_itx> that would be the quickest
[19:56:05] <zeeshan|2> smart man
[19:56:06] <Tom_itx> cut visejaws would be the most secure
[19:56:10] <zeeshan|2> lol
[19:56:16] <zeeshan|2> i didnt think of flipping it sideways
[19:56:38] <Tom_itx> just take small cuts in Y incrementing Z each pass
[19:56:46] <Tom_itx> and step over in X a bit each time
[19:56:52] <Tom_itx> maybe 3 moves in X
[19:56:57] <Tom_itx> for the thickness
[19:57:04] <Tom_itx> that way they probably won't move on ya
[19:58:02] <Tom_itx> you'll get a little more tool deflection doing it that way
[19:58:14] <Tom_itx> i doubt they're shuttle parts though
[19:59:51] <zeeshan|2> haha
[19:59:55] <zeeshan|2> not they most definitely are not
[19:59:55] <zeeshan|2> :D
[20:00:10] <Tom_itx> put parallels under the part so they're square with the cutter
[20:00:53] <Tom_itx> you could try out your 1.5" roughing cutter that way :D
[20:01:43] <zeeshan|2> haha
[20:03:01] <Tom_itx> on the long parts, put a spacer where the angle is so at least one side will have full contact with the vise
[20:10:28] <zeeshan|2> i really need to get a table for my horizontal bandsaw!
[20:15:20] <malcom2073> You got one of thems that can turn vertical with a table?
[20:15:38] <zeeshan|2> yes
[20:15:48] <malcom2073> Mine is like that, it's useful
[20:17:07] * Tom_itx clocks out and sends zeeshan|2 a bill
[20:17:13] <zeeshan|2> haha
[20:17:35] <zeeshan|2> there is no bill for helping me make parts for my car! :D
[20:18:04] <Tom_itx> those are money pits to begin with
[21:03:07] <furrywolf> auger adapter built except for the welding... I ended up using too small of metal because the proper stuff was oversized. bleh.
[21:03:56] <furrywolf> one piece of 1/8 was .010 thicker than the other piece of 1/8, one piece of 3/16 was .009 thicker than the other piece. in both cases, the 1" wide bar was the larger one, while the 3/4" wide bar was the thinner one.
[21:07:04] <furrywolf> both times the 3/4 was undersize by about the same amount the 1 was oversize
[21:29:12] <Stoneanvil> Pretty new here... anyone tried linuxcnc with Warp9's ESS?
[21:31:32] <cradek> Stoneanvil: those aren't made to be compatible with linuxcnc. consider mesa's zillions of options, which are.
[21:31:54] <furrywolf> I'm going to go with "no", since I can't find any mention googling of anyone even starting to write a driver for it.
[21:32:25] <Stoneanvil> yeah... that's why I asked too... can't seem to find anything on google.
[21:32:26] <cradek> mesa has new ethernet devices now, and a huge line of tried-and-true pci interfaces that many use on industrial machines
[21:33:42] <Stoneanvil> I'm going to stick with Mach3 I guess... I have nothing but linux (ubuntu/centos) running here... I guess the only windows (sigh) machine I will have to support will be for Mach3.
[21:34:07] <cradek> why?
[21:34:45] <Stoneanvil> The machine I have is already PMDX-126 with Warp9 ESS
[21:35:25] <cradek> oops
[21:35:58] <furrywolf> you could buy a mesa 7i76e, which should be a pretty easy swap.
[21:36:24] <Stoneanvil> I would rather not swap hardware this early in the build...
[21:36:31] <cradek> http://en.wikipedia.org/wiki/Sunk_costs#Loss_aversion_and_the_sunk_cost_fallacy
[21:37:07] <Stoneanvil> I will VM the windows dedicate it to Mach3... I just don't trust windows for anything that is related to 'real time'.
[21:37:25] <_methods> well don't worry you won't be using real time lol
[21:37:30] <_methods> not with windows
[21:37:49] <Stoneanvil> yeah.. sucks
[21:38:23] <Rab> Stoneanvil, seems like the PMDX-126 will connect straight to a PC parallel port. You could go that route and sell the ESS on eBay. (More likely, keep it around so you have your original system as backup.)
[21:39:35] <Stoneanvil> Funny enough... not one of my machines is old enough to still have a parallel port. :)
[21:39:50] <furrywolf> price is about the same, ess is $180, 7i76e is $199
[21:39:52] <Tom_itx> those can be had pretty cheap
[21:39:59] <Rab> The motion control smarts in the ESS are redundant; it's not needed with LinuxCNC.
[21:40:55] <furrywolf> I need to un-flashcut my sherline one of these days, but as it's a working machine, and I don't have enough money to finish my other machine...
[21:41:01] <Stoneanvil> Yeah.. that is why I was looking into LinuxCNC... it had faster response and direct toolpath motion control.
[21:41:13] <cradek> Stoneanvil: when in doubt just use a pci card
[21:41:40] <Stoneanvil> I might just do that.
[21:42:59] <Tom_itx> check latency on your pc
[21:43:20] <cradek> you can do that by just booting the live image (from dvd or usb)
[21:49:38] <Stoneanvil> Thanks guys... I think I will try both ways and see which one has the best results.
[21:51:54] <_methods> friends dont let friends use mach
[21:52:12] <Stoneanvil> lol
[21:52:13] <cradek> it can make a lot of extra trouble if you try to use only hardware that works with both systems
[21:52:36] <cradek> it's really best to decide before you start buying things (but I see that ship has sailed)
[21:53:16] <Stoneanvil> Yeah... the system came pre-build with PMDX-126, ESS and Spindle Controller.