Back
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[00:09:14] * zeeshan hates quoting for design time
[00:19:28] <zeeshan> http://imgur.com/a/SAYUH
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[00:19:31] <zeeshan> finally modeling done!!!!!!!!!1
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[00:21:04] <Tom_itx> is it supposed to do something?
[00:22:32] <zeeshan> i dont think he'd be to happy if i revealed that
[00:22:45] <zeeshan> hes okay with showing off the cad
[00:22:58] <zeeshan> i really need to invest in a 3d scanner
[00:23:07] <zeeshan> the most time consuming part was modeling that silly plastic housing
[00:23:18] <zeeshan> and making the pieces to fit between the dome and the plastic housing
[00:23:32] <zeeshan> its all parametric now, so if the dome curvuture changes, all the pieces update
[00:27:38] <Tom_itx> you gonna build it all?
[00:28:55] <zeeshan> thats the plan
[00:29:00] <zeeshan> i gotta outsource the dome and the ring
[00:29:08] <zeeshan> the plates i can do here
[00:30:03] <SpeedEvil> what is it?
[00:30:26] <zeeshan> mirror mirror in the wall
[00:30:39] <zeeshan> whos the fairest of them all?
[00:41:37] <malcom2073> Your mom
[00:42:54] <zeeshan> haha
[00:43:01] <zeeshan> perfectly executed
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[00:52:20] <Erant> Hmm.
[00:53:36] <Erant> So I bought my ballscrew (
http://www.ebay.com/itm/181968913568). It comes with the end bearing thingies, but it's hard to tell what kind of bearings they are:
http://i.ebayimg.com/images/g/sFYAAOSweW5VK8Ob/s-l500.jpg
[00:54:02] <Erant> Is there a general rule with kind of bearing that is? Axial? Radial?
[00:56:15] <PetefromTn_> most of the time you will have a pair of angular contacts on the fixed and and a plain bearing on the floating end
[00:59:49] <Erant> k. So the fixed end has two angled bearings then usually (As in, axial both directions)?
[01:00:19] <Erant> I'll just wait on 'm in that case, and design the housing around whatever comes with it.
[01:02:05] <PetefromTn_> Man I just realized I forgot to order the damn Din Rail mounts for the 7i77 card. I need them to mount the board so I can start wiring this thing SIGH
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[01:23:36] <Kevin`> are there any pci-e fpga cards supported by linuxcnc?
[01:23:49] <malcom2073> The 6i25 is
[01:24:14] <Kevin`> you sure? it's not on the wiki
[01:24:39] <malcom2073> Erm, I've heard here of people using it so I assumed it was...
[01:24:43] <malcom2073> PCW can tell you for sure
[01:24:51] * Kevin` pokes PCW
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[01:26:00] <Kevin`> also, can I install the software necessary for real time testing on debian?
[01:29:20] <Tom_itx> it's the same as teh 5i25 only PCIe
[01:30:01] <Tom_itx> you use the 5i25 bitfiles for both
[01:30:46] <Tom_itx> iirc one install is wheezy
[01:35:44] <Tom_itx> http://linuxcnc.org/docs/2.7/html/getting-started/getting-linuxcnc.html
[01:38:19] <Kevin`> diff rtai preempt-rt?
[01:46:56] <Tom_itx> go with rtai unless you need preempt-rt
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[01:52:13] <zeeshan> anyone here own a fry maker?
[02:01:00] <Tom_itx> to cut them?
[02:01:55] <zeeshan> yes
[02:01:57] <zeeshan> and peel
[02:02:06] <Tom_itx> make yourself a potatoe gun and put a mesh on the end
[02:02:19] <Tom_itx> peels are good fer ya
[02:02:28] <zeeshan> haha
[02:02:30] <zeeshan> thats not a bad idea
[02:02:34] <zeeshan> potatoe gun w/ mesh on the end
[02:02:35] <zeeshan> haha
[02:02:36] <malcom2073> peels are delicious
[02:02:44] <Tom_itx> seriously that's how it is commercially done
[02:02:51] <Tom_itx> they pump them thru a tube with water
[02:02:55] <zeeshan> oh
[02:03:12] <Tom_itx> tumble them in a drum to remove the skins first
[02:03:23] <zeeshan> perforated drum right?
[02:03:29] <Tom_itx> yeah
[02:04:00] <Tom_itx> http://www.meatprocessingproducts.com/fma-13443.html?gclid=CJTFxcKIj8oCFYVAaQodqtMFVA
[02:04:44] <Tom_itx> http://www.webstaurantstore.com/choice-3-8-french-fry-cutter-potato-cutter/40747713.html?utm_source=Google&utm_medium=cpc&utm_campaign=GoogleShopping&gclid=CMbLpteIj8oCFYcBaQodm2IELw
[02:06:22] <zeeshan> i was seeing reviews on that second link
[02:06:26] <zeeshan> its apparently garbage
[02:06:32] <Jymmm> Tom_itx: Those are a pita to use btw
[02:06:53] <Tom_itx> yeah i like the potatoe gun idea better
[02:07:21] <Tom_itx> 'buckshot'
[02:07:41] <Jymmm> that would be called tator tots =)
[02:07:51] <Jymmm> cause there would be nuttin left =)
[02:08:20] <Jymmm> Tom_itx: I think this what you were wanting
https://www.youtube.com/watch?v=kQzFhpxMdFo
[02:08:44] <malcom2073> slitmaster
[02:09:00] <malcom2073> I guess slicemaster is taken?
[02:09:26] <Jymmm> I'd liek to knwo how loud it is
[02:10:05] <Tom_itx> https://www.youtube.com/watch?v=SyK02WTJ4W8
[02:10:09] <Jymmm> and more so how easy it is to clean
[02:13:16] <zeeshan> i love me some freedom fries
[02:17:17] <Kevin`> does rtai work on amd64? rtai page says yes, linuxcnc page less clear
[02:18:02] <Tom_itx> pretty sure but you'd have to try it on your mb
[02:19:06] <Tom_itx> you could ask in the dev channel
[02:19:22] <Kevin`> what's that
[02:19:28] <Tom_itx> linuxcnc-devel
[02:19:32] <Tom_itx> #
[02:21:18] <Tom_itx> i've only used rtai
[02:22:12] <zeeshan> i dont want to go to work
[02:22:15] <zeeshan> this time off was great
[02:22:19] <zeeshan> :{
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[02:22:29] <Tom_itx> heh
[02:22:35] <malcom2073> I can't wait to get back to work
[02:22:45] <zeeshan> upcoming 4 months will be crazy
[02:22:45] <Tom_itx> it was nice
[02:23:01] <zeeshan> i have a course to do ;/
[02:23:11] <zeeshan> malcom2073: f work!!
[02:23:11] <zeeshan> :P
[02:23:17] <malcom2073> zeeshan: f money too
[02:23:20] <zeeshan> haha
[02:26:19] <jdh> I've been off for almost 3 wks. tomorrow will be bad.
[02:27:00] <zeeshan> hehe
[02:27:26] <zeeshan> same here, about 3 weeks
[02:27:36] <zeeshan> i dont remember what i was working on at work :P
[02:27:47] <Tom_itx> i bet they will remind you
[02:28:07] <Tom_itx> and now it's 3 weeks closer to due
[02:28:36] <zeeshan> i wrote some notes before i left
[02:28:41] <zeeshan> cause i knew this would happen :P
[02:28:48] <jdh> I half wrote some code before I left
[02:29:22] <zeeshan> i hope you commented :P
[02:29:32] <jdh> self-documenting code
[02:29:37] <Kevin`> does this look ok or should I think about getting a new computer?
http://kwzs.be/~kevin/linuxcnc-test.png
[02:30:09] <jdh> pport or mesa/etc?
[02:30:31] <Kevin`> either, haven't bought hardware yet
[02:31:46] <Tom_itx> looks high to me but i'm no expert
[02:32:06] <jdh> same here.
[02:35:08] <Kevin`> i'll go through my pile of old pcs and see if something tests well
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[02:36:56] <PetefromTn_> I like my part time job but I have been enjoying the time off here I got a lot of work done in the shop the last few days.
[02:45:40] <SpeedEvil> http://imgur.com/gallery/NxXbwBP - the most unusual harmonic drive
[02:50:54] <pink_vampire> there is a good glue to connect thermistors to metal?
[02:51:25] <jdh> thermal paste and a clamp?
[02:52:35] <pink_vampire> I need to connect it to the G302X
[02:53:21] <Tom_itx> http://www.permatex.com/products-2/product-categories/specialized-maintenance-repair/exhaust-system-repair/permatex-muffler-tailpipe-sealer-detail
[02:53:51] * Jymmm hands Tom_itx a roll of duct tape
[02:54:15] <Tom_itx> https://www.youtube.com/watch?v=Y3CffV7VkOQ
[02:54:24] <Jymmm> pink_vampire: RTV
[02:54:38] <Tom_itx> high temp rtv
[02:54:41] <Tom_itx> ^^
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[02:54:51] <Jymmm> it's a gecko, not 1200F
[02:56:01] <pink_vampire> maybe I will put it in bass tube and use j-b weld
[02:56:45] <Jymmm> Don't use JBweld in high temps
[02:57:15] <Jymmm> AND it's conductive, at least till cured
[02:58:08] <Jymmm> Oh, and the JB-Weld plant manager is a really nice guy!
[03:00:00] <pink_vampire> after 120C the gecko will die anyway...
[03:00:40] <pink_vampire> normaly thay 30-50C max
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[03:05:26] <pink_vampire> someone use scaler here?
[03:06:22] <pink_vampire> ultrasonic scaler..
[03:08:53] <malcom2073> There's thermal glues
[03:09:02] <malcom2073> digikey has some, I use it for gluing heatsinks to chips
[03:10:07] <pink_vampire> I'm going to make plate to mount the thermistor and use abit of normal paste.
[03:10:28] <malcom2073> Also, I thought geckos didn't need heatsinks, just airflow?
[03:10:35] <jdh> sounds familiar
[03:11:31] <malcom2073> Maybe that was the G540 only
[03:11:43] <pink_vampire> I have 5 fans.
[03:12:12] <jdh> c'mon, we are all your fans.
[03:12:39] <pink_vampire> Awwww
[03:12:49] <pink_vampire> <3
[03:14:57] <malcom2073> Nope that was the G540:
http://www.geckodrive.com/g540-heatsinking
[03:23:46] <pink_vampire> this is the heatsinks
[03:24:00] <pink_vampire> http://i.imgur.com/2Y6sUDI.png
[03:26:27] <Jymmm> WOOHOO 3D printer addon...
http://www.frys.com/product/8220776
[03:27:59] <pink_vampire> jdh: malcom2073 ^
[03:28:35] <pink_vampire> Jymmm: ????
[03:28:56] <malcom2073> pink_vampire: That should do it
[03:29:10] <pink_vampire> I'm sure..
[03:49:18] <trentster> Kevin`: Some times the bios settings can have a huge impact on latency. Its worth optimising the bios and re-testing
[03:49:46] <trentster> I know for me this dropped my latency results by 80% on 2 different pc's
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[05:00:44] <Kevin`> trentster: i'll ask you about that, but gonna have to be tomorrow, sleep then work
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[05:20:44] <XXCoder> hey fellow machinists
[05:21:52] <XXCoder> Jymmm: easy enough to add yeah heh make it adder-subtractor cnc machine
[05:22:35] <Jymmm> XXCoder: With the SAME precision too
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[05:23:19] <XXCoder> cant wait for days when 3d printer get .0001" precision
[05:23:31] <XXCoder> so we all can make custom cases for devices for example
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[05:24:52] <Jymmm> Have you ever seen hoppers? You know, where you fill each bin up with whatever and dispense form the bottom? Much liek the bilk food bins?
[05:25:01] <Jymmm> bulk food*
[05:25:11] <XXCoder> yeah
[05:25:56] <XXCoder> what about it?
[05:26:02] <Jymmm> Could you imagine filling the bins with polymers, rubbers, metal ores, etc.... you could print a car including gaskets fro the ground up, even the battery too
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[05:27:06] <XXCoder> in time ships book it has tech that can print anything, including living things
[05:27:42] <Jymmm> That would be the day that I need to have a very close inspection of the working end on my firearms
[05:28:28] <XXCoder> actually it was human offshoot that it was printing. they made their own ultraadvanced tech and have their own dyson sphere
[05:30:14] <Jymmm> If I want hu-mon offshoot, I'll do it the old fashion way...
https://www.youtube.com/watch?v=X79-kc4NSpM
[05:30:41] <XXCoder> you ever read classic 1960s time machine book?
[05:31:08] <Jymmm> book? What is this 'book' thing you speak of?
[05:31:30] <Jymmm> (Nah, I'm not really a fictional reader)
[05:31:38] <XXCoder> lol ojk
[05:31:44] <Jymmm> I know of the book
[05:31:50] <Jymmm> HG Wells
[05:32:04] <XXCoder> its decent for such a old book.
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[05:32:16] <Jymmm> and a replica was on big bang
[05:32:17] <XXCoder> time ships is direct sequel by different author
[05:32:44] <Jymmm> http://colemanzone.com/images%284%29/Big%20Bang%20Theory/1.jpg
[05:33:15] <XXCoder> man I want to build a mini model. however I think I want book version. less complex but yeah
[05:33:27] <Jymmm> XXCoder: print it =)
[05:33:32] <XXCoder> that machine was restored from BAD condition
[05:33:49] <XXCoder> few changes
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[05:34:42] <XXCoder> http://www.hollywoodlostandfound.net/props/timemachine.html
[05:36:15] <XXCoder> oh yeah its MOVIE that is 1960s. book is quite a lot older.
[05:39:50] <XXCoder> I hope I still have that book. mine must be very early edition with more plain machine
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[05:46:43] <XXCoder> dang
http://colemanzone.com/Time_Machine_Project/TimeMachinePrint%282%29.htm
[05:46:47] <XXCoder> so many editions.
[05:46:48] <Jymmm> I gave up all books (dead trees) except for refernce stuff.
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[05:48:28] <XXCoder> I dont buy much dead tree versions much now
[05:49:56] <Jymmm> XXCoder: Audio Books huh? <snickers>
[05:50:06] <XXCoder> very useful, that. :P
[05:50:33] <Jymmm> XXCoder: Yeah, you dont' get interupted by words and such and can just concentrate on the content =)
[05:50:53] <XXCoder> lol
[05:51:21] <XXCoder> man I really need to find my edition as it does NOT appear in that huge list of editions.
[05:51:49] <Jymmm> Dont forget to use lots of duct tape on it too!
[05:52:18] <Jymmm> Then it'll be the redneck edition
[05:52:52] <XXCoder> :P
[05:53:09] <Jymmm> I have a physics book that's 114yo now, binding in great shape too
[05:53:14] <XXCoder> time traveler says "hey hold my beer and check this" gets in time trailer and travels
[05:53:26] <Jymmm> lmao
[05:53:47] <Jymmm> ...to the liquor and ammo drive in store!
[05:53:57] <Jymmm> in? thru? both?
[05:54:18] <XXCoder> 8 sequels heh all by different authors
[05:54:34] <XXCoder> nah, back to when ammo was cheap and liquor even cheaper
[05:55:36] <XXCoder> http://www.timemachinemodels.com/
[05:56:02] <Jymmm> cute
[05:56:51] <XXCoder> https://www.yourprops.com/movieprops/original/yp_5134d989cc76c1.01665782/The-Time-Machine-Time-Machine-Control-Lever-1.jpg
[06:21:18] <XXCoder> https://covers.openlibrary.org/b/id/6569990-L.jpg finally found it
[06:21:43] <XXCoder> nice nonecludian cover
[06:34:50] <XXCoder> hey Jymmm download link workf or you?
http://naomivorster.com/book/2164027/12-2015/the-time-machine-great-illustrated-classics.html
[06:36:04] <Jymmm> XXCoder: No, just some redirect to plaster.com
[06:36:27] <XXCoder> no wonder it didnt work, noscript blocked that
[06:36:48] <XXCoder> stupid site.
[06:37:31] <Jymmm> XXCoder:
http://www.planetpdf.com/planetpdf/pdfs/free_ebooks/The_Time_Machine_NT.pdf
[06:38:05] <XXCoder> yeah that I already found
[06:38:22] <XXCoder> all illusiations is not there, it has to be specific edition that does have
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[07:54:19] <Deejay> moin
[07:55:48] <XXCoder> yo
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[08:42:35] <chupacabra> what do people use to make gcode to feed linuxcnc?
[08:42:59] <archivist> inside rear of skull
[08:43:05] <chupacabra> lol
[08:43:20] <chupacabra> I used to could do that.
[08:43:37] <archivist> I am not kidding, its the right way for my type of job
[08:43:57] <XXCoder> magic
[08:44:14] <archivist> mostly making regular shapes with a gcode loop
[08:44:19] <chupacabra> im remembering the age of post processors and stuff.
[08:44:35] <archivist> that age has not passed
[08:45:12] <chupacabra> oh noes. I kinda figured not. Still lots of big iron out there.
[08:45:47] <archivist> they all do something different hence the need for post processors
[08:46:07] <chupacabra> My 3040t is finally running correctly so now time to put it to work.
[08:47:01] <chupacabra> i can make designs in librecad but need g code now.
[08:47:02] <archivist> you dont get comments in cam output
http://www.archivist.info/cnc/wormtest/wormtest.ngc
[08:47:55] <archivist> that is a test for worm reduction quality
[08:48:50] * chupacabra has been wondering what .ngc files are.
[08:51:19] <XXCoder> there is no effective free gcode processors from what I see. however there is plenty of paid programs that can
[08:55:06] <anomynous> chupacabra, if you do 2.5d or equilevant in 4th axis its fine to learn gcode. Its easy, really. Rapid, feed, interpolation plane, coordinate systems, polar/cartesian coordinates, radius/length compensations, drilling cycles. Coordinate system rotation too. Not much, and you could do after reading with 2 A4 cheat sheets.
[08:55:16] <anomynous> its a big plus to actually know what your machine is going to do on the next line
[08:55:17] <anomynous> :D
[08:55:35] <anomynous> XXCoder, fusion doesnt have a post for linuxcnc?
[08:55:56] <XXCoder> actually didnt know fusion had any post?
[08:56:03] <anomynous> it does have plenty with it
[08:56:57] <anomynous> hmm
[08:56:59] <chupacabra> I been machining since before CNC. Wheeee.
[08:57:12] <anomynous> or are we talking of something else than post processor? o.0
[08:57:18] <anomynous> chupacabra, =)
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[08:58:00] <XXCoder> anomynous: can fusion import models?
[08:58:04] <anomynous> yes
[08:58:21] <anomynous> you have to upload them on the interwebs and have them appear in the app
[08:58:37] <XXCoder> cool as I dont really like modeling on fusion, though I gonna try more
[08:58:57] <anomynous> the modelling for imported models is non-modal by default
[08:59:07] <anomynous> err
[08:59:09] <anomynous> parametric
[08:59:09] <anomynous> :D
[09:01:08] <XXCoder> ok
[09:23:26] <chupacabra> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Simple_LinuxCNC_G-Code_Generators
[09:25:02] <archivist> see also the new "features" plugin thing
[09:27:06] <archivist> http://fernv.github.io/linuxcnc-features/
[09:28:11] <archivist> and here
https://github.com/cnc-club/linuxcnc-features
[09:53:47] <chupacabra> what does it do?
[09:54:42] <archivist> there is a youtube video , it is a pointy clicky instant cam on the machine
[09:54:52] <archivist> sort of
[09:55:31] <archivist> a bit like some modern cnc machines have for one off and simple programming
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[10:25:09] <XXCoder> anyone played zelda, the ocarina of time?
[10:25:20] <XXCoder> https://www.youtube.com/watch?v=JbceRzEL3ks this guy breaks game so hard he never become adult link.
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[12:36:29] <pink_vampire> morning
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[13:50:50] <Kevin`> trentster: ping?
[14:02:37] <trentster> howdy Kevin`
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[14:05:45] <Kevin`> trentster: can has comment?
http://etmalec.net/~kevin/biospages/
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[14:13:13] <Deejay> remote bios?
[14:13:20] <Deejay> via AMT or such thing?
[14:13:23] <pink_vampire> Kevin`: how did you get the bios from the terminal??
[14:13:36] <Deejay> hi pink_vampire
[14:13:38] <Kevin`> pink_vampire: ipmi, it's a server board
[14:13:45] <Deejay> ah nice
[14:14:09] <pink_vampire> ok..
[14:14:18] <pink_vampire> not that impresive.
[14:15:09] <pink_vampire> I thought you use some driver or something
[14:15:28] <Kevin`> it's one of those fanless things targetting who knows what
[14:15:46] <Kevin`> you can do it with a bios driver, but that would probably add overhead that would be counterproductive
[14:15:57] <Kevin`> this is a seperate chip. not that it seems to be helping in this situation
[14:16:32] <pink_vampire> what kind a machine is that?
[14:16:57] <pink_vampire> I'm looking for now for small pc, or din rail mounted pc.
[14:17:28] <Kevin`> pink_vampire: it's old, you probably don't want it. but i think this is the model:
http://www.supermicro.com/products/motherboard/ATOM/ICH9/X7SPA.cfm?typ=H&IPMI=Y
[14:19:22] <pink_vampire> nice..
[14:20:50] <pink_vampire> I wish i can get smaller board with dual serial
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[14:29:13] <__rob> hello
[14:30:07] <__rob> can anyone tell me how BSPP connectors are meant to work
[14:30:15] <__rob> for air hose
[14:30:43] <__rob> it looks like it a parallel thread, but then for female and male it would be metal on metal
[14:30:53] <__rob> I dont see how it would seal
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[14:32:25] <__rob> unless its an actual thread
[14:32:32] <__rob> but it looks like its just rings of thread parallel
[14:34:33] <archivist> should be taper for a proper seal
[14:35:25] <archivist> parallel uses some other sealing method (ptfe tape or o ring)
[14:35:48] <archivist> you can use ptfe tape ot taper threads
[14:38:44] <archivist> a fibre washer is also used on a parallel thread nut to face
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[14:41:51] <archivist> original method before ptfe tape was so wind some string around the thread and wipe it with a linseed putty type of compound
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[14:54:06] <gonzo_> the BSPP ones I've used, rely on a 60deg cone to seal. The threads are just for tension
[14:54:35] <gonzo_> usually for hydraulic piping
[14:55:04] <gonzo_> or screw a taper into a pll as said, with ptfe tape
[14:55:53] <gonzo_> a washer would be ok with an airline, but not for high pressure
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[15:13:05] <Demure_> Hey! Considering running my current lathe project on LinuxCNC but have a small question
[15:13:17] <Demure_> I have a decent encoder here, but it's rated at 10.000 pulses per rotation (so 40.000 steps)
[15:13:51] <Demure_> Would LinuxCNC and say mesa 7I76 / 5I25 combo be able to handle this at max 2000rpm?
[15:14:03] <archivist> you would need a hardware interface (mesa) to read that encoder at speed
[15:14:39] <archivist> a bit too good for a spindle :)
[15:15:20] <pink_vampire> http://www.newegg.com/Product/Product.aspx?Item=N82E16813157656
[15:15:33] <cradek> 7i76 does have one encoder input channel
[15:15:48] <pink_vampire> where is the power for the 2.5 sata disk?
[15:15:59] <Demure_> Thanks. :) I want to use the spindle as a C-axis, too. I believe the mesa board has an encoder input, but I'm unsure what differences there are between the different inputs / channels.
[15:16:31] <cradek> is your encoder differential?
[15:16:46] <Demure_> Incremental
[15:17:05] <cradek> I mean the wiring. does it have like A, /A, B, /B?
[15:17:14] <archivist> does it have A- and A+
[15:17:32] <_methods> don't you need 7i77 for servos
[15:17:37] <Demure_> It has A, A-, B, B-, N and N-
[15:17:47] <cradek> then the 7i76 can count it at 10 MHz
[15:18:09] <cradek> see page 50 of the 7i76 manual
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[15:18:43] <Demure_> Thanks! Apologies if I could've found it, it's all a bit tricky right now
[15:19:39] <cradek> no problem, I knew where to look
[15:20:06] <Demure_> Another question, if that's okay. I have bought what seems like a high quality VFD / inverter and a Siemens 0.55khz motor. I've read in some places that in certain specifics a VFD can be used as a C-axis when paired with an encoder
[15:20:13] <Demure_> What would the requirements be for this?
[15:20:42] <archivist> depends on the vfd not all can do that
[15:21:09] <Demure_> What specifications and details would I have to look through in the manual?
[15:21:18] <Demure_> i.e. what terms to look out for?
[15:21:30] <archivist> servo is one
[15:21:36] <cradek> if my math is right, 10MHz count rate would happen at 250 rps which is 15000 rpm
[15:22:12] <Demure_> That should be more than enough
[15:22:18] <cradek> yeah a vfd is usually not used for positioning
[15:23:06] <Demure_> I figured, but I was pondering between going with a servo to run the spindle at high speed until this option came along and figured I could always attach a servo if I needed to do any C-axis work, until I read somewhere about someone using a VFD for such a purpose
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[15:28:59] <cradek> I suspect it's common for VFDs to have a basic positioning mode, like for tool orient, but you are talking about a mode that positions and counteracts machining forces etc, and that's a different story
[15:29:17] <cradek> I think the type of motor needed for those different applications is very different too
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[15:30:41] <Demure_> That kind of use would make more sense and in line what what I knew about VFDs, thanks
[15:30:56] <Demure_> Guess I'll have to figure out a good way to attach a servo or stepper to the spindle. :)
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[15:33:43] <cradek> yeah, maybe mechanical switching between the two motor/driver types would be ideal, if you can build that
[15:34:05] <cradek> I have no experience with positioning spindles (except for orient)
[15:34:07] <archivist> or nudge it to location and apply brake
[15:34:16] <cradek> there might be good solutions but I don't know them
[15:34:30] <cradek> yes depends if you need just indexing or full contouring
[15:34:57] <pink_vampire> hi
[15:34:59] <Demure_> Indexing would work for the majority of the cases
[15:35:14] <Demure_> I'll see how precise I can get the motor to control and otherwise I'll install a servo
[15:35:30] <archivist> what are you intending to make
[15:35:43] <Demure_> Drill some holes mostly
[15:36:02] <Demure_> But ideally I'd also do some engraving
[15:36:12] <Demure_> Making lens mounts :)
[15:36:29] <archivist> servo then
[15:37:07] <Demure_> Ok, thanks for taking the time to answer!
[15:39:20] <archivist> I am thinking of bayonet mount there
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[16:25:24] <archivist> what sales blurb
http://www.ebay.co.uk/itm/STEEL-POLYGON-REFERENCE-GRADE-12-x-30-Degs-by-P-V-E-Ltd-/272083854138
[16:31:46] <pink_vampire> archivist: what is that?!
[16:32:50] <ssi> lol
[16:32:52] <archivist> a tool used in conjunction with an angle dekkor for measuring how much a rotary table rotates
[16:33:01] * ssi bids 5 pounds
[16:33:09] <t12> what do you think the reserve is
[16:33:35] <archivist> some silly amount, I have one so I am not going for it
[16:34:29] <archivist> mine is more protected from fingers
http://www.collection.archivist.info/searchv13.php?searchstr=polygon
[16:35:40] * SpeedEvil wonders how precise laser-printer polygons are
[16:35:53] * SpeedEvil wonders if laser-printer polygons exist anymore.
[16:35:56] <ssi> what's a laser printer polygon
[16:36:37] <SpeedEvil> polyganol mirrors which are used to scan the LASER across the drum.
[16:36:37] <t12> i believe they do
[16:36:38] <archivist> http://www.ebay.co.uk/itm/24V-Laser-Polygon-Mirror-062K19850-Motor-Driver-Board-AN44002A-Xerox-Phaser-6140-/161932573138
[16:36:52] <ssi> ohh ok
[16:37:01] <t12> and old busted laster printers are... free
[16:37:38] <SpeedEvil> t12: no, they're not
[16:38:29] <t12> areound here they are
[16:38:39] <t12> every large org has a room of like 30 they're waiting to throw away
[16:39:10] <SpeedEvil> Can be free - sure.
[16:40:58] <archivist> SpeedEvil, nip to glasgow and haggle for this one
http://www.ebay.co.uk/itm/Hilger-Watts-20-Degree-Polygon-236314-/301818645955
[16:41:45] <archivist> I wonder if any ever sell at that sort of money
[16:42:37] <SpeedEvil> archivist: no legally operable car alas.
[16:42:57] <archivist> bus
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[16:44:05] <SpeedEvil> Other problems arise.
[16:44:10] <archivist> I need a car too :(
[16:44:32] <archivist> I am currently on borrowed wheels
[16:48:16] <Jymmm> What is it (polygon)?
[16:49:19] <archivist> a set of mirrors on an axis
[16:50:18] <Jymmm> used in/for what?
[16:50:58] * archivist repeats a tool used in conjunction with an angle dekkor for measuring how much a rotary table rotates
[16:51:16] <Jymmm> ah
[16:51:58] <archivist> https://en.wikipedia.org/wiki/Precision_polygon
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[16:55:53] <SpeedEvil> Terrible article.
[16:55:58] <SpeedEvil> But gives the idea
[16:56:58] <archivist> there is some sense on
http://what-when-how.com/metrology/optical-instruments-for-angular-measurement-metrology/
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[16:58:42] <archivist> at least that page has the method of checking micrometer anvils see dowell prism lower down
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[19:33:43] <enleth> makita bandsaw just arrived. quite pleased with build quality, except the fence, it's shit
[19:34:43] <enleth> otherwise a very nice tool
[19:34:56] <CaptHindsight> painted and bent 20ga sheet metal?
[19:35:28] <enleth> fence? wobbly aluminum extrusion
[19:35:41] <enleth> and the rear clamp is a joke
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[19:37:05] <CaptHindsight> http://www.makita.co.za/css/hrimages/LB1200F.jpg similar to this?
[19:37:40] <CaptHindsight> lower res pic
http://ecx.images-amazon.com/images/I/41FkAP-V3NL._SY300_.jpg
[19:37:43] <enleth> exactly this
[19:38:00] <enleth> unless there are regional differences
[19:38:21] <enleth> but looks same
[19:38:40] <enleth> the table is a really nice hefty chunk of cast iron
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[19:39:09] <enleth> there's a piece of ground rod aligning the split at the front
[19:39:57] <_methods> how much was that bandsaw?
[19:40:06] <CaptHindsight> I always talk myself out of those types/grades of tools when I see them on sale somewhere
[19:40:15] <skunkworks> I bought myself a craftman impact driver kit. (impact driver, drill, 2 batteries and charger) I needed some batteries as my original set (drill, circle saw, sawzall) was down to one sort of working battery. I love the impact driver. been drooling over getting one for a while.
[19:40:19] <CaptHindsight> unless it comes with lunch
[19:40:54] <skunkworks> and that set was cheaper than getting 2 replacment batteries at the time
[19:41:27] <enleth> _methods: an equivalent of $450 or so, but somebody else paid for it, so I'm fine with the price
[19:41:39] <_methods> hehe
[19:41:42] <_methods> the best price
[19:42:05] <CaptHindsight> skunkworks: I did the same with buying batteries. The whole new drill with 2 batteries was 1/2 the price of the batteries alone
[19:42:20] <_methods> yeah i just ditched my old drills this weekend
[19:42:28] <_methods> got some of the new 18v ones
[19:42:41] <_methods> lipo batteries or whatever
[19:42:46] <skunkworks> CaptHindsight, yep - plus I get the li-ion batteries and charger.
[19:43:03] <_methods> li-ion yeah not lipo
[19:43:18] <_methods> makita lxt
[19:43:23] <enleth> anyway I was fed up with cheap chinese bandsaws so I decided to try an expensive chinese bandsaw
[19:43:29] <enleth> so far so good
[19:43:31] <skunkworks> I don't have to work at driving long screws in now.
[19:43:31] <CaptHindsight> it's funny in China when you buy cordless tools you just ask by battery voltage
[19:43:52] <CaptHindsight> mostly no name but the price and quality goes up with the voltage
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[19:44:27] <_methods> i've always had pretty good luck with makita
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[19:44:35] <enleth> it must be better, the numbers are higher
[19:44:54] <Jymmm> CaptHindsight: I love that Craftsman (aka rebranded Ryobi cordless tools use a propritary connecter so you can't use other batteries
[19:45:07] <skunkworks> I have only used craftsman.. No real reason other than the original (which I still have and use) was on super sale.
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[19:45:36] <_methods> i've had good luck with hitachi too
[19:45:48] <_methods> my makita batteries way outlasted my hitachi batteries though
[19:47:42] <skunkworks> huh - price is back up. Was 109
http://www.sears.com/craftsman-c3-19.2-volt-drill-impact-combo-kit/p-00955233000P?prdNo=2&blockNo=2&blockType=G2
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[19:48:11] <CaptHindsight> after New Years back to reality price increase :p
[19:49:14] <CaptHindsight> _methods: his are 19.2V, not puny 18V :)
[19:49:31] <_methods> hahah tru
[19:49:48] <_methods> i'm comfortable with the size of my batteries at this point in life though
[19:51:16] <CaptHindsight> heh they actually are up to 60V cordless tools now
[19:52:40] * Jymmm will wait for 220V 3 phase batteries
[19:52:44] <Tom_itx> must be small capacity batteries
[19:52:46] <CaptHindsight> lol
[19:52:58] <CaptHindsight> the AC battery
[19:53:09] <Jymmm> No, DC =)
[19:53:20] <Jymmm> Zero Hz 3ph!!!
[19:53:26] <_methods> battery back pack
[19:53:32] <CaptHindsight> https://www.ryobitools.com/outdoor/products/list/family/40v
[19:54:36] <CaptHindsight> 40V 2.4 amp hour
[19:54:40] <Tom_itx> i've had pretty good luck with ryobi
[19:54:52] <CaptHindsight> https://www.ryobitools.com/outdoor/products/details/500
[19:55:32] <CaptHindsight> a cordless lawn mower might as well use a deep cycle boat motor battery
[19:56:13] <Jymmm> Do you really need more than 32V ???
https://www.youtube.com/watch?v=gC3rB9f7DaU
[19:56:22] <Jymmm> err 36V
[19:56:44] * Tom_itx just wants 1 more volt than Jymmm
[19:57:20] <_methods> lol
[19:57:34] <Jymmm> Tom_itx: No problem, I'll always have 10x more AH's than you at any voltage ;)
[19:58:00] <_methods> he has to have more with all that resistance in his "brain"
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[19:58:18] <Jymmm> _methods: it's all futile
[19:58:34] <_methods> hahaha
[19:58:40] <_methods> assimilation time
[19:58:54] <CaptHindsight> more like a leaky capacitor
[19:59:02] <_methods> lol
[19:59:14] <Tom_itx> gawd aren't we all glad it's Monday after a long break??
[19:59:30] <CaptHindsight> I need a break from my break
[20:00:02] -!- Duc [Duc!~Duc@24.96.23.106] has joined #linuxcnc
[20:00:19] <CaptHindsight> and the kids are all back to school
[20:00:41] <CaptHindsight> holiday noise in the channel
[20:01:03] <Jymmm> I dont know if anyone has a need for these... Temperature transmistters
http://www.stellartech.com/STILandingPages/temperature-transmitters-g.html
[20:01:48] <CaptHindsight> Jymmm: do you have RS485 versions?
[20:02:10] <Jymmm> CaptHindsight: Not mine, just an ad I saw on amazon
[20:02:46] <Jymmm> CaptHindsight: It cays 232 485 and canbus
[20:02:58] <Jymmm> says*
[20:04:47] <CaptHindsight> whats the lowest cost version with ethernet?
[20:05:29] -!- bpuk [bpuk!~bpuk@boopotter.plus.com] has joined #linuxcnc
[20:06:04] <CaptHindsight> thermocouple + *duino with ethernet serape?
[20:06:20] <Jymmm> CaptHindsight: temp range?
[20:06:29] <CaptHindsight> thermocouple + STM discovery board?
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[20:07:33] <_methods> you could probably hook one of those esp8266's up to a thermocouple
[20:07:33] <CaptHindsight> Jymmm: type K 32 to 900 deg. F (0 to 482 deg. C)
[20:08:38] <_methods> they're like $2
[20:08:39] <_methods> if that
[20:09:49] <CaptHindsight> _methods: but I want thermocouple to device to ethernet to switch to modem to cable to modem to switch to PC
[20:10:03] <CaptHindsight> no newfangled wireless
[20:12:50] <CaptHindsight> forgot, cable co to NSA to cable co in the middle :)
[20:13:01] <_methods> oh
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[20:13:06] <_methods> i thought you wanted wireless
[20:13:50] <_methods> wellllll in that case i'd buy a nexx wt3020 or gl.inet and attach it to a thermo and micro
[20:13:55] <CaptHindsight> unfortunately the businesses nearby are in a wifi power pissing contest
[20:14:03] <_methods> the nexx is like $15 and you can put openwrt on it
[20:14:09] <_methods> and it has 4 open gpio pins
[20:14:30] <_methods> and it's tiny
[20:14:38] <CaptHindsight> last time I scanned it was difficult to find a channel
[20:15:21] <bpuk> I missed the original question - but if you're looking for an ethernet capable thermocouple interface I've had luck in the past with a Pi and a MAX31855 add-on board
[20:15:24] <_methods> you want the wt3020h though if you go that route
[20:15:36] <_methods> it has 8mb flash
[20:16:10] <_methods> http://www.ebay.com/itm/Portable-Mini-NEXX-WT3020H-300Mbps-USB-Share-Wireless-Wifi-Router-Repeater-White-/121710445780?hash=item1c568204d4:g:Ej4AAOSwBLlVSa~h
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[20:16:28] <CaptHindsight> https://wiki.openwrt.org/toh/nexx/wt3020
[20:16:41] <_methods> yeah that wiki
[20:16:52] <_methods> you don't want the 3020a
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[20:16:58] <_methods> the 4mb flash is a killer
[20:17:18] <CaptHindsight> H F or AD then?
[20:17:39] <_methods> yeah
[20:17:50] <_methods> as long as it has at least 8mb flash life is good
[20:17:54] <_methods> you can do it with 4
[20:17:57] <_methods> but you lose the usb slot
[20:18:12] <_methods> you'd have to use a usb drive for extra space
[20:18:26] <_methods> if you don't care about losing usb then it doesn't matter which one you use
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[20:19:16] <_methods> http://www.amazon.com/Gl-iNet-Router-Openwrt-Mobile-Control/dp/B00JKFE0FW
[20:19:20] <_methods> taht one is another good one
[20:19:23] <_methods> with 16mb flash
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[20:20:21] <_methods> and 5 gpio
[20:20:57] <_methods> https://forum.openwrt.org/viewtopic.php?id=47715
[20:21:37] <_methods> taht one is nice because they broke out the gpio pins for you
[20:21:41] <_methods> just solder on some headers
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[20:25:17] <CaptHindsight> still need some A/D
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[20:25:44] <_methods> arduino pro micro for $4?
[20:25:49] <_methods> or pro mini
[20:25:57] <_methods> i think the pro micro is like $6
[20:27:06] <_methods> so $16/wt3020, $4/pro mini, $8/31855 board
[20:27:10] <_methods> $28
[20:27:23] <_methods> plus your thermocouples
[20:27:48] <_methods> you could probably skip the arduino and just read off the 31855 board
[20:28:02] <CaptHindsight> yeah was just looking at that
[20:28:44] <bpuk> using a 31855 is much much easier than worrying about doing the adc yourself - thermocouples get suprisingly tricky to layout well
[20:29:01] <CaptHindsight> easy peasy
[20:29:30] <CaptHindsight> my background was in analog and microwave
[20:29:42] <CaptHindsight> you kids today have it easy
[20:29:53] <bpuk> fair enough :) my background is hitting things with a hammer - getting my head around the cold-junction stuff took me a while ;)
[20:29:59] <Jymmm> CaptHindsight: Which probe would you use (link)?
[20:31:39] <_methods> what's that new fancy 2 wire thermocouple chip
[20:31:52] <_methods> max6675?
[20:32:02] <Jymmm> CaptHindsight: This?
http://www.amazon.com/Type-Measuring-Thermocouple-Sensor-3-3Ft/dp/B00CQFTZ4E/
[20:32:26] <_methods> nah it's a newer chip
[20:32:42] <_methods> you can read up to 10 thermocouples using 2 wires instead of 5 on 31855 i think
[20:32:43] <CaptHindsight> Jymmm: or similar
[20:33:47] <Jymmm> CaptHindsight: Ok, in dumbass speak how are those read/calibrated?
[20:34:47] <CaptHindsight> _methods: maybe MAX31850/MAX31851 cold-junction-compensated 1-Wire thermocouple-to-digital converters
[20:34:55] <_methods> yeah that might be it
[20:35:53] <_methods> yeah up to 16 locations
[20:36:01] <bpuk> Jymmm: unless you're using a chip to do the fiddly bit for you read the voltage across the junction (in millivolts) and lookup from a chart. The fiddly bit is that a second junction forms where you plug the thermocouple in
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[20:36:39] <_methods> the ad597 might work good too
[20:36:47] <Jymmm> arduino MAX6675 K-type Thermocouple Temperature Sensor
https://www.youtube.com/watch?v=NTlPflr8hYY
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[20:39:41] <chris_99> has anyone used ADS1248 out of interest, with an RTD, i was looking at that recently
[20:39:43] <bpuk> Reading a paper at the minute - they're currently using units of millimicroseconds. I think they mean nanoseconds. Unless it's an american convention I'm unaware of
[20:40:16] <CaptHindsight> that's just to confuse the maker crowd
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[20:41:55] <CaptHindsight> bpuk: sounds strange unless the topic generally used microseconds and they made a 3 order of magnitude leap
[20:42:25] <bpuk> they're using thyratrons as switches if that helps date the paper?
[20:42:49] <CaptHindsight> sure it's not a scifi novel? :)
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[20:43:01] <bpuk> and a polaroid camera to capture the oscilloscope waveform
[20:43:30] <bpuk> pretty sure :) just seemed an odd unit
[20:43:32] <CaptHindsight> was before they invented or coined the term nano-
[20:43:38] <Jymmm> bpuk: polaroid?! That's stupid... etch-a-sketch ftw
[20:44:18] <bpuk> yup, etch-a-sketch over 50 nanoseconds - can't see any problem there at all
[20:44:23] <CaptHindsight> _methods:
http://docs.getchip.com/#chip-hardware $9 with wifi
[20:44:46] <cradek> old schematics use M for kilo-ohm and MMF for microfarad
[20:44:50] <Jymmm> bpuk: Hey, some have talent and turning knobs. Other, well...
[20:45:01] <cradek> it's a big jumble and you just need to use the context
[20:45:05] <_methods> yeah the $9 computer lol
[20:45:09] <_methods> did they actually ship any yet
[20:45:30] * Jymmm slaps _methods with $8.... $1 computer
[20:45:56] <_methods> hehe
[20:46:12] <bpuk> thanks cradek - I don't normally look at electronic manuals/theses this old - some of the conventions are a bit... confusing
[20:46:34] <cradek> yes, they are terrible
[20:47:05] <CaptHindsight> _methods:
http://thehackernews.com/2015/09/chip-mini-computer.html says started around Oct 1
[20:47:06] <bpuk> particularly since a few lines later a constant is gives as 50 x 10^-16 seconds
[20:47:18] <bpuk> gah, that should have been -6
[20:47:23] <CaptHindsight> http://makezine.com/2015/09/24/the-9-computer-is-shipping-today/
[20:47:23] <_methods> oh wow they actually shipped some
[20:47:51] <CaptHindsight> _methods: Allwinner project and SOC
[20:48:11] <_methods> yeah that would be the way to go then
[20:48:11] <bpuk> I've spent about half the time reading this paper thinking 'if they'd had mosfet's when he did this, it'd have been done in a month'
[20:48:19] <_methods> much better than a little router
[20:48:52] <CaptHindsight> rather than watch a bunch of maker types types fumble a low cost SOC board project they decided to partner up and just make it themselves
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[20:49:38] <bpuk> that said - it does have a _lot_ of really nice information - hence the reading
[20:50:03] <_methods> can you still get them for $9?
[20:50:28] <gromits> cradek: I posted a question to the -developers list regarding an Axis issue I have. Wondering if i could pick your brain on it here?
[20:50:30] <CaptHindsight> https://nextthingco.zendesk.com/hc/en-us
[20:51:02] <CaptHindsight> _methods: what they say
http://getchip.com/
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[20:51:12] <_methods> preorder
[20:51:14] <CaptHindsight> not sure when new order will ship
[20:51:17] <_methods> shipping jun 2016
[20:51:41] <CaptHindsight> is that for the board or just cables and case?
[20:51:54] <CaptHindsight> odd sentence
[20:52:02] <_methods> it says preorder
[20:52:10] <_methods> i don't think you can get the chip yet
[20:52:15] <CaptHindsight> maybe the first were sample silicon
[20:52:26] <CaptHindsight> then they go back and fix
[20:52:48] <_methods> no idea
[20:52:49] <XXCoder> you get a protective cover for cpu side
[20:53:02] <_methods> i didn't think any had shipped
[20:53:09] <XXCoder> _methods: I have one
[20:53:16] <_methods> oh well there ya go
[20:53:30] <CaptHindsight> or they sold whatever on poopstarter and then are waiting for orders to build up for a second run of boards
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[20:53:52] <XXCoder> basic chip is just board, cable to connect video out
[20:53:59] <CaptHindsight> XXCoder: does it work? Is there a list of bugs?
[20:54:11] <XXCoder> it does, it works quite well
[20:54:28] <XXCoder> I used my mini tv lol
[20:55:08] <_methods> for $9 i guess i'll just order one to try out lol
[20:55:09] <CaptHindsight> XXCoder: does the chip have any text about version? thats decipherable?
[20:55:23] <XXCoder> its still first edition
[20:55:28] <XXCoder> everythng
[20:55:52] <_methods> buwhahahahah
[20:55:56] <_methods> $6 for shipping
[20:56:03] <_methods> that's where they get ya
[20:56:10] <_methods> so it's a $15 computer
[20:56:12] <_methods> not a $9
[20:56:28] <XXCoder> still quite cheap
[20:56:35] <_methods> now i'm not going to get one just because that's dirty
[20:56:47] <XXCoder> I need to get board addon for different video type
[20:56:56] <XXCoder> really? there is worse ones
[20:57:24] <CaptHindsight> how much is shipping for 10 boards? still 6 or 60?
[20:57:31] <_methods> no idea
[20:57:37] <_methods> i closed it after i saw that stupid shipping
[20:57:39] <XXCoder> try add 10
[20:57:59] <CaptHindsight> but it comes in a pretty box
[20:58:39] <_methods> i picked 3
[20:58:43] <_methods> and shipping is $7
[20:58:46] <XXCoder> what impresses the heck out of me is bnuilt in wifi
[20:58:58] <_methods> i guess that isn't too bad
[20:59:05] <XXCoder> I didnt know that, must have missed that in kickstarter details
[20:59:23] <XXCoder> raspberrypi you has to use usb one
[20:59:49] <XXCoder> my bro is getting the portable version
[21:00:20] <_methods> i guess i will get one now since they're not tryin to rape on the shipping
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[21:00:50] <XXCoder> my guess is initial one needs handling, but it dont increase much handling to add 2 or 3 so on.
[21:00:55] <XXCoder> limited to 5 interesting
[21:01:53] <XXCoder> $11 to ship 5
[21:02:18] <XXCoder> $2.20 each chip
[21:02:22] <_methods> yeah i can live with that
[21:02:32] <XXCoder> someone have suggested them to change name because its as ungoogleable as hell
[21:02:33] <_methods> but $6 was kinda stupid
[21:02:44] <XXCoder> handling included I guess
[21:03:51] <_methods> aren't those pi zero's cheap too
[21:03:57] <XXCoder> $5
[21:04:03] <XXCoder> plus shipping I guess
[21:04:19] <XXCoder> if I recall, weaker stats than chip
[21:04:34] <XXCoder> oh guess im wrong on case
[21:04:39] <XXCoder> $2 for case
[21:04:49] <XXCoder> gees bit high there
[21:05:42] <_methods> man thats crazy for $5
[21:06:03] <_methods> onboard wifi with the chip though
[21:06:27] <XXCoder> I guess case and very short composite cable included was kickstarter only
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[21:19:40] <_methods> ah good i don't even need a monitor for that thing
[21:19:56] <_methods> if you connect to the micro usb it starts a usb-serial connection
[21:20:47] <XXCoder> nice
[21:21:12] <XXCoder> so it means I can get display from chip that way too?
[21:21:19] <_methods> yeah i thought it was going to have to dig up some silly rca adapter to connect to a monitor or something
[21:21:41] <XXCoder> or buy $15 car backup tv heh
[21:21:46] <_methods> no need
[21:22:29] <_methods> just do a screen/cu/picocom connect to it
[21:22:43] <XXCoder> need to leasrn how. thanks
[21:23:21] <_methods> 115200/8n1
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[21:44:53] <Tom_itx> are we searching for lcnc in a pocket pc's now?
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[22:05:17] <JT-Shop> on eyephones
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[22:12:06] <Jymmm> CaptHindsight: I found a k-probe solution =)
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[22:18:55] <CaptHindsight> anyone should be able to run their 5 ton CNC mill or lathe using a controller that fits in your pocket or can get lost on your desk :)
[22:19:17] <CaptHindsight> and cost <$50
[22:19:34] <cradek> wirelessly
[22:19:49] <Jymmm> wireless powered!
[22:21:33] <Jymmm> wireless motors!!!
[22:31:51] <Demure_> Let's make it a keychain. :)
[22:33:00] <Deejay> gn8
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[23:30:51] <witnit> I have always only built brush dc systems with encoders, now I have these brushless motors with resolvers. Can I pull the resolver, add an encoder and exclude hall sensors/resolver?
[23:31:46] <witnit> a b lines to the drive and a/ b/ line to the controller? Is this common practice?
[23:34:50] <CaptHindsight> yes, but people also keep their resolvers with linuxcnc
[23:35:01] <witnit> Oh?
[23:35:19] <witnit> What is the best way to commutate in my scenario (i usually use mesa cards)
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[23:35:57] <CaptHindsight> maybe 7i48, let me check
[23:36:22] <CaptHindsight> 7i48
[23:36:31] <CaptHindsight> sorry 7i49
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[23:36:44] <CaptHindsight> http://store.mesanet.com/index.php?route=product/product&product_id=101
[23:36:57] <CaptHindsight> ask PCW for details
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[23:37:20] <witnit> 7i33 should be same right?
[23:37:31] <witnit> I only need two axis in this scenario
[23:38:05] <CaptHindsight> http://store.mesanet.com/index.php?route=product/product&path=83_86&product_id=92
[23:38:22] <CaptHindsight> servos with encoders
[23:38:30] <witnit> I been using the 7i90+7i33 with tons of success, but I wasnt sure how to get the resolvers into the loop
[23:38:47] <witnit> just ditch the resolvers and use ONLY encoders correct?
[23:39:25] <CaptHindsight> you can but your resolvers might have better res and you already have them
[23:39:47] <witnit> this particular amp BE25A20AC has an encoder input it seems
[23:40:01] <witnit> yeah but, where exactly would I wire this resolver
[23:40:26] <CaptHindsight> then again 7i49 is $184 vs whatever your encoders might cost
[23:40:36] <witnit> right
[23:40:46] <witnit> the 49 is resolver input
[23:41:07] <CaptHindsight> thats what the description says :)
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[23:41:36] <CaptHindsight> several well respected members of the community here use them
[23:47:55] <witnit> oh ok I didnt notice up above you corrected the 48 to 49 :)
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