#emc | Logs for 2007-07-05

[00:01:33] <dmess> iany one who the HARDINGE brand of CNC machines>> chnc II in particular
[00:02:09] <dmess> who= KNOW
[00:32:57] <TomF> logger_emc, bookmark
[00:32:57] <TomF> Just this once .. here's the log: http://www.linuxcnc.org/irc/irc.freenode.net:6667/emc/2007-07-05.txt
[00:58:58] <LawrenceG> 11
[01:54:36] <maddash> hello, boys and girls
[02:36:01] <renesis> sup pimps
[08:11:43] <anonimasu> renesis: chillin with my homies.
[13:19:46] <maddash> !vlc
[14:43:55] <skunkworks> uh oh - its pepsi__
[14:44:07] <pepsi__> hi
[14:44:10] <skunkworks> Hi
[14:44:25] <archivist> whats he doing in here
[14:44:26] <skunkworks> * skunkworks knows him from ##electronics.
[14:44:42] <pepsi__> im a spy
[14:46:21] <skunkworks> your not supposed to admit to it..
[14:49:38] <pepsi__> oh
[14:50:04] <pepsi__> my bad
[14:50:09] <archivist> now that we have the evidence....
[14:50:46] <skunkworks> archivist: how is the whole terrorist thing going? All we get is americanized news.
[14:51:10] <archivist> I think they caught most of the idiots
[14:53:52] <skunkworks> sounded like they where idiots
[14:53:57] <skunkworks> which was good I guess
[14:54:49] <archivist> yes failures except to themselves
[14:55:01] <archivist> well one burnt
[14:56:42] <archivist> I hope the doctors dont give him too many pain killers
[14:59:45] <anonimasu> wy9'
[14:59:44] <anonimasu> who?
[15:00:16] <archivist> uk useless terrorists
[15:00:24] <anonimasu> oh..
[15:33:18] <skunkworks> sorry - they where 80 amps peak
[15:33:21] <skunkworks> http://www.electronicsam.com/images/KandT/servotag.JPG
[15:33:54] <anonimasu> ok
[15:35:01] <anonimasu> dont you want/need current feedback for thoose?
[15:35:07] <anonimasu> or will you just fuse them?
[15:35:13] <skunkworks> fuse for now.
[15:36:13] <anonimasu> hm
[15:36:27] <anonimasu> I guess I could buy pico-system amplifiers...
[15:36:34] <skunkworks> Yes
[15:36:59] <anonimasu> though I need a -10+10v output..
[15:37:25] <anonimasu> though thoose amps want tacho feedback.
[15:37:25] <cradek> haha https://lists.ourproject.org/pipermail/bdi4emc-help/2007-July/thread.html
[15:38:05] <anonimasu> hm.. thoose have a relay.. that trips on overcurrent.
[15:38:27] <jepler> anonimasu: catch The_Ball_MC -- he was working on a PWM to +-10V analog conversion board that would work with pluto (and presumably other sources of PWM)
[15:38:41] <anonimasu> oh
[15:38:40] <anonimasu> nice
[15:39:18] <anonimasu> jepler: though I still need the amplifiers :)
[15:39:46] <anonimasu> jepler: but if a simple fuse/relay will do for overcurrent, there's nothing that keeps me from using thoose amps skunkworks have/working on
[15:40:01] <jepler> cradek: he's a funny funny man
[15:40:01] <maddash> "Mach3 knocks the socks of emc2." like how>
[15:40:17] <anonimasu> jepler: the big thing is how it would work with small motors
[15:40:23] <SWPadnos> well, Mach runs on Windows, of course
[15:40:32] <cradek> maddash: he's also going to send the guy an emc2 release that's over a year old ("if he gets a chance")
[15:41:10] <anonimasu> :/
[15:41:13] <cradek> however I have little sympathy for the original poster who couldn't find our website with google (our "how to get it" page says if you have dialup, you can get an ubuntu disk shipped to you for free)
[15:41:39] <anonimasu> i wonder when tuxcnc will ship
[15:41:40] <anonimasu> :p
[15:41:46] <maddash> oh, i just realized that this was yesterday
[15:41:49] <jepler> cradek: emc's still not a tiny download even if you have an ubuntu install disc
[15:42:17] <cradek> jepler: very true, but it's certainly possible
[15:42:21] <maddash> SWPadnos: that's how mach knocks emc2's socks?
[15:43:00] <jepler> maddash: haven't you said to yourself while running emc2 "if only I could open up IE7 and install some spyware while waiting for my motors to stall"?
[15:43:07] <anonimasu> jepler: it should work with small servos/lighter machine right?
[15:43:41] <cradek> If you prefer to start with the distributed Ubuntu CD, which the Ubuntu team will ship to you free of charge (for instance if you cannot download the above CD image), you can install EMC2 yourself with these instructions:
[15:43:43] <jepler> anonimasu: which "it" -- fuse as overcurrent protection?
[15:43:50] <cradek> (linuxcnc.org site)
[15:44:05] <maddash> jepler: oh. so it's not as though mach had some army of pixies doing the TP calcs?
[15:44:14] <anonimasu> jepler: oh the amps..
[15:44:59] <jepler> anonimasu: for small servos, skunkworks's amps will be overkill but I would expect them to work.
[15:46:36] <anonimasu> I need 72V and 22A
[15:46:42] <anonimasu> peak..
[15:46:57] <anonimasu> and 72V and 3.9 continous
[15:48:26] <anonimasu> brb
[15:48:27] <anonimasu> going home
[15:48:30] <jepler> anonimasu: just keep those ratings in mind when choosing the FETs
[15:48:47] <jepler> you can get something cheaper / lower Rds(on) / etc than if you're trying to do 200V
[15:49:06] <anonimasu> jepler: im very inclined to go with a full servo system.. with a pluto or with a mesa..
[15:49:12] <maddash> :( cubic splines aren't fpga friendly
[15:49:12] <anonimasu> and skip the usc..
[15:49:38] <anonimasu> it works well, but as I have serovs it'd be _nice_ to have true closed loop
[15:54:02] <jepler> anonimasu: the other day you were giving advice to buy a gecko stepper driver instead of screwing around with "less expensive" or DIY drivers, right?
[15:54:37] <jepler> anonimasu: if so, you should probably lean more towards mesa and a commercial servo amplifier than towards pluto and homebrew servo amps
[15:54:51] <jepler> (or do I have you confused with someone else?)
[16:07:18] <jepler> maddash: for a cubic spline, starting with f(x), f'(x), f''(x), and f'''(0) (f'''(x) is constant and all subsequent derivatives are zero) it is possible to compuate f(x+dt), f'(x+dt), and f''(x+dt) efficiently -- for instance, f''(x+dt) = f''(x) + dt * f'''(0). If dt is fixed then appropriate prescaling can be done so that these operations are all shifts and additions, which is efficient on fpga
[16:10:02] <jepler> but for finding these coefficients .. you want a CPU with floating point
[16:11:21] <maddash> yeah, floating point's the problem. i'm trying to convert to fixed point
[16:12:34] <maddash> 'x+dt'? heh.
[16:15:26] <jepler> OK so maybe I didn't choose my variable names most carefully
[16:16:21] <maddash> :P
[16:19:08] <maddash> http://www.box.net/shared/gtt8aiaeve
[16:20:01] <maddash> the authors manage to get out of using polynomials
[16:22:35] <jepler> I bet it's hard to get coordinated motion out of that scheme
[16:23:02] <jepler> or arcs
[16:26:44] <maddash> why not? it basically replaces the stuff inside cubic.c
[16:27:02] <maddash> so it works per-axis
[16:28:19] <jepler> OK, I don't know the specifics of your design
[16:29:28] <maddash> i wonder how the folks at fpga4fun managed it
[16:30:16] <jepler> personally I'd just ditch cubic interpolation (in emc2 on a PC anyway) -- it is based on the assumption that the tp and kinematics can't run at the full servo rate, which is simply not true on a modern GHz machine
[16:30:39] <jepler> I dunno, have they put the complete source code up yet, or just the starting pages?
[16:31:45] <cradek> I have a sneaking suspicion that it's not used in emc2. have you confirmed that it is?
[16:31:57] <maddash> http://www.fpga4fun.com/CNC5.html ("The complete code is too long to be documented here (about 180 lines of Verilog) but it is available from KNJN.com") -- bullshit.
[16:32:18] <jepler> maddash: yeah one of my peeves with fpga4fun/knjn is that they don't give out a wealth of information
[16:32:48] <jepler> in fact it seems like they give out as little as possible
[16:32:51] <maddash> the forums have nothing useful either
[16:34:08] <maddash> and if the proposed integrator (http://www.fpga4fun.com/CNC4.html) is used, then there's no way he could've cut this (http://www.fpga4fun.com/images/CNC_fpga4fun_logo.jpg) out.
[16:52:26] <maddash> yep. cubicinterpolate is called.
[17:17:07] <maddash> am I the only one who thinks that cubic interp is a bit too much trouble?
[17:17:40] <skunkworks> <jepler> personally I'd just ditch cubic interpolation (in emc2 on a PC anyway) -- it is based on the assumption that the tp and kinematics can't run at the full servo rate, which is simply not true on a modern GHz machine
[17:18:25] <maddash> hm, didn't see that
[17:28:50] <maddash> who's/where's Fred Proctor? i'd love to ask him about cubic.c
[17:31:53] <maddash> anyone know the name of that algorithm used to draw lines on a raster?
[17:33:14] <SWPadnos> bresenham
[17:33:30] <SWPadnos> and Fred is at NIST
[17:34:26] <skunkworks> him? http://www.isd.mel.nist.gov/personnel/proctor/
[17:35:27] <SWPadnos> yep
[17:36:01] <SWPadnos> I don't think he's too involved with emc at the moment, if you're thinking of contacting him
[17:36:03] <maddash> http://www.tellingthestory.com/ <--- the whole reason I asked in th first place
[17:36:18] <maddash> SWPadnos: clearly not.
[17:36:22] <SWPadnos> that's not him ;)
[17:37:47] <ds2> are there any sample programs that uses the EMC digitizing G code ?
[17:37:48] <maddash> oops, breaktime's over
[17:39:08] <skunkworks> ds2: this? http://cvs.linuxcnc.org/cgi-bin/cvsweb.cgi/emc2/nc_files/gridprobe.ngc
[17:39:56] <ds2> that's what the comments say; thought I don't recogonize it as a typical G code program
[17:41:05] <skunkworks> ? it uses loops and such (o-words)
[17:41:34] <ds2> I've never seen a loop in G code so that's probally why
[17:41:48] <ds2> looks easy enough
[17:42:26] <ds2> still trying to decide what to use to test my digitizing probe - turbo CNC would require the least work (boots from floppy, etc) but EMC is friendlier
[17:46:31] <robin_sz> meep?
[18:12:14] <eta> eta is now known as lern_hydra
[18:12:18] <lern_hydra> 'lo
[18:12:28] <lern_hydra> anyone here?
[18:12:35] <jepler> lern_hydra: no
[18:12:43] <lern_hydra> crap
[18:13:08] <lern_hydra> I was wondering, do you recall the current state of backlash comp? I can't seem to recall if it was reliable or not
[18:14:00] <jepler> I think it works fine -- we used it on the mazak to correct for a small amount of backlash on "Y"
[18:14:03] <jepler> or maybe it was "X"
[18:14:37] <lern_hydra> ok, so for small amounts
[18:15:26] <cradek> I use it on my lathe X axis
[18:15:52] <lern_hydra> would 0.07" be a "safe" amount?
[18:16:09] <lern_hydra> wasn't there something about double the max_vel value?
[18:16:36] <cradek> you really mean inch?
[18:16:53] <lern_hydra> err, yeah
[18:16:56] <cradek> ouch
[18:17:32] <lern_hydra> (it's a manual mill with acme screws)
[18:17:43] <cradek> servos or steppers?
[18:17:46] <lern_hydra> it's mostly hard backlash though
[18:17:49] <lern_hydra> steppers
[18:17:56] <cradek> let us know how it works :-)
[18:18:19] <cradek> can't you improve it any in the hardware?
[18:18:26] <cradek> that seems awfully loose
[18:18:39] <lern_hydra> not very easily, it's not loose as much as rather tight but weak contruction
[18:19:44] <cradek> what tolerance parts do you hope to cut with it?
[18:20:05] <lerneaen_hydra> testing
[18:20:16] <bill2or3> pong.
[18:20:22] <lerneaen_hydra> yay
[18:21:03] <lerneaen_hydra> oh crap the RT test seems to have left junk behind
[18:21:37] <jepler> backlash compensation (.01mm) on a circular move: http://emergent.unpy.net/files/sandbox/backlash-comp.png
[18:22:03] <lerneaen_hydra> cool :)
[18:22:24] <cradek> that's what your parts will look like too :-)
[18:22:30] <jepler> cradek: haha
[18:22:41] <lerneaen_hydra> bah
[18:22:46] <cradek> try to cut only squareish things
[18:24:23] <cradek> jepler: looks like it was able to apply all that comp in one cycle - wonder how it works with a crazy large amount of comp
[18:26:58] <lerneaen_hydra> hmm how do you reinstall the packages that EMC depends on?
[18:27:08] <jepler> http://emergent.unpy.net/files/sandbox/backlash-comp-1.7mm.png
[18:27:58] <jepler> lerneaen_hydra: how did you install it in the first place? if you installed from a .deb, apt should not let you remove a package that emc2 depends on
[18:28:08] <lerneaen_hydra> did it respect the set maxvel?
[18:28:18] <lerneaen_hydra> jepler, I think I broke a depended file
[18:28:43] <lerneaen_hydra> /usr/realtime-2.6.15-magma/modules/rtai_hal.ko
[18:29:36] <jepler> oh -- so you didn't uninstall the package with dpkg or apt, you damaged or removed one of the files in the package?
[18:29:42] <lerneaen_hydra> yeah
[18:30:18] <lerneaen_hydra> RT test left ome files in use, and I thought that they were autogenerated, apparently not :)
[18:31:07] <cradek> that backlash looks pretty decent to me
[18:31:09] <jepler> I guess I'm not sure what to do in this case
[18:31:28] <cradek> the spikes in the acc are strange, but they don't violate any constraints
[18:31:31] <cradek> might be a minor bug though
[18:34:29] <lerneaen_hydra> wasn't there some way to see whcih files depended on which packages?
[18:34:53] <cradek> that file will be in rtai-modules-whatever
[18:34:56] <jepler> lerneaen_hydra: this can't be the "right" way, but: sudo dpkg --remove --force-depends rtai-modules-2.6.15-magma ; sudo apt-get -f upgrade
[18:35:07] <jepler> you can find the package a file comes from with: dpkg-query -S /path/to/file
[18:35:19] <jepler> (files don't depend on packages)
[18:35:19] <cradek> something like apt-get install --reinstall rtai-modules-2.6.15-magma
[18:35:37] <jepler> cradek: ding ding that's the right solution
[18:35:53] <lern_hydra> ah, yes thats a bit ugly, but it should work
[18:41:26] <lern__hydra> apparently a reboot was needed too
[18:48:36] <jepler> doing the circle at higher speed: http://emergent.unpy.net/files/sandbox/backlash-comp-1.7mm-2.png
[18:49:01] <cradek> nice
[18:49:12] <jepler> that's going to be one distorted circle
[18:49:33] <cradek> looks like about the best you could hope for, though
[18:50:22] <jepler> it's a small circle -- radius 5mm, backlash 1.7mm
[18:51:41] <cradek> ah I think those spikes on the decel are because the commanded velocity is going down
[18:51:50] <cradek> |vel|
[19:00:26] <lern__hydra> what is backlash measured as? if I move X+, then reverse and have to "move" 1mm internally, and then X starts moveing -, is that 1mm backlash or 0.5mm?
[19:01:58] <cradek> conceptually: put an indicator on the axis. push it side to side. the distance it moves is the backlash.
[19:02:24] <lern__hydra> ah ok
[19:02:25] <cradek> in your example that's 1mm of backlash
[19:02:32] <lern__hydra> exactly
[19:05:31] <robin_sz> 0.07" seems a lot. even for a manual lathe conversion
[19:05:46] <robin_sz> .010" is more normal ...
[19:08:18] <lern__hydra> hmm does backlash run at stepgen maxvel or maxvel?
[19:08:36] <cradek> 0.5 * maxvel
[19:08:44] <lern__hydra> oh
[19:08:46] <cradek> so stepgen maxvel should be > 1.5 * maxvel
[19:08:56] <cradek> so pick all the numbers accordingly
[19:09:06] <lern__hydra> is 1.5 hardcoded?
[19:09:12] <cradek> yes
[19:09:56] <cradek> (I'm no expert, I only looked at the code just now)
[19:35:15] <skunkworks> anonimasu: the plan really is to use emc as the limit for most things. accel/max velocity and folloing error.
[19:37:55] <robin_sz> IIRC, was there not some problem with backlash not being jerk limited by the motion>
[19:46:14] <jepler> emc's regular motion planner isn't jerk limited either
[19:52:20] <lern__hydra> backlash comp works great :)
[19:53:10] <skunkworks> lern__hydra: any pictures?
[20:16:58] <lern__hydra> skunkworks, coming up, running a new part atm
[20:21:03] <skunkworks> Nice :)
[20:27:01] <lern__hydra> skunkworks, I'll upload them when I get home, it's easier there, 30-40 mintes or so
[20:27:18] <lern__hydra> jepler, I've got backlash down to 0.02 or so mm now :)
[20:32:29] <JymmmmEMC> Is the paraport pinout listed here still valid (under the ' standard_pinout.hal' section)? http://www.linuxcnc.org/docs/devel/html/config/stepper/stepper.html
[20:33:20] <cradek> if in doubt, look at the hal file
[20:33:30] <cradek> one of us would have to do it - might as well be you
[20:33:39] <JymmmmEMC> cradek: I'm mostly speaking electrically
[20:34:05] <anonimasu> skunkworks: yeah but that's not related to the MAX CURRENT..
[20:34:56] <skunkworks> anonimasu: agreed.. It will not be perfect.
[20:36:40] <anonimasu> jepler: Well, geckos _work_ and homebrew stepper drivers dosent..
[20:37:41] <anonimasu> jepler: there's a big difference between a 120$ stepper driver vs a 500$ servodriver..
[21:23:24] <JymmmmEMC> anonimasu: liar
[21:23:37] <anonimasu> JymmmmEMC: heh
[21:24:26] <anonimasu> JymmmmEMC: why arent your machine running with homebrew allegro based drivers?
[21:24:39] <anonimasu> actually why arent your machine running at all?
[21:25:07] <JymmmmEMC> Cause the power switch is turned off
[21:25:40] <skunkworks> cradek's mill works just fine 'home brew' depends on the performance you want. works great for him.
[21:26:10] <Skullworks-PGAB> This is just tooo good. http://arstechnica.com/news.ars/post/20070704-riaa-sued-for-using-illegal-investigatory-practices.html
[21:26:11] <JymmmmEMC> anonimasu: or are you talking about the new controller?
[21:26:18] <anonimasu> JymmmmEMC: no..
[21:26:23] <anonimasu> nevermind.
[21:26:38] <JymmmmEMC> anonimasu: I was kidding! Eeeesh =)
[21:26:42] <robin_sz> anonimasu, hey, stop that
[21:26:42] <anonimasu> :)
[21:26:49] <anonimasu> ?
[21:27:17] <robin_sz> anonimasu, dont wind up JymmmmEMC ... he's way, WAY mor advanced than you imagine
[21:27:29] <anonimasu> skunkworks: I think a reasonable demand is that it should work, always.
[21:27:49] <anonimasu> skunkworks: that means no lost steps.. no fucking around with resonance frequencies..
[21:28:22] <robin_sz> anonimasu, well, in the "fitting a power supply and three drives in the longest time ever" competition, hes way, way ahead of the rest of the filed
[21:28:35] <robin_sz> 2 years and counting :)
[21:28:54] <anonimasu> robin_sz: drop it..
[21:28:54] <anonimasu> :)
[21:29:44] <robin_sz> on his foot?
[21:30:01] <JymmmmEMC> anonimasu: Don't sweat it, You know robin_sz is being an asshole, I know that robin_sz is being an asshole, and even robin_sz know he's being an asshole. It's all good
[21:30:02] <Skullworks-PGAB> I ordered my X3 on black friday - its only 3/4 out of the crate...
[21:30:26] <anonimasu> black friday?
[21:30:32] <Skullworks-PGAB> these things take time when they are not your "Day job"
[21:30:34] <skunkworks> day after thanks-giving
[21:31:06] <Skullworks-PGAB> the prayed for mass attack of christmas shoppers day.
[21:31:07] <robin_sz> JymmmmEMC, simple question
[21:31:12] <anonimasu> oh.
[21:31:16] <robin_sz> JymmmmEMC, fitted that PSU and drivers yet?
[21:31:18] <JymmmmEMC> Skullworks-PGAB: By the NEXT black-friday you'll have it 1/2 way out
[21:31:45] <Skullworks-PGAB> that would require putting parts BACK IN the crate
[21:32:26] <Skullworks-PGAB> I pulled the table and saddle - as one moveable chunk
[21:32:38] <lerneaen_hydra> skunkworks: fixing images now :)
[21:32:47] <robin_sz> * robin_sz decides the answer must be "not yet"
[21:32:55] <skunkworks> ok - I will be back later to check
[21:32:57] <skunkworks> bbl
[21:33:04] <Skullworks-PGAB> pulled the electronics cabnet and spindle gear head casting
[21:33:34] <Skullworks-PGAB> still have the base and column bolted to the crate
[21:34:09] <Skullworks-PGAB> (got distracted when the big machine showed up...)
[21:54:48] <lerneaen_hydra> what are there called in english? http://ironbill.se/product_thumb.php?img=images/6003.jpg&w=76&h=57
[21:55:09] <jepler> * jepler looks
[21:55:44] <jepler> that picture is so small I can't tell what it is
[21:56:10] <lerneaen_hydra> it's a drill used for making a hole when you want to use a tailstock
[21:57:06] <jepler> I probably don't know the term either
[21:57:10] <lerneaen_hydra> oh
[21:57:18] <lerneaen_hydra> they've got a distinctive shap
[21:57:20] <lerneaen_hydra> shape
[21:57:59] <lerneaen_hydra> small (2mm) "lead" (maybe 3mm long) which is just a normal drill, and then a 45* taper outwards
[21:58:16] <lerneaen_hydra> the result mates nicely with a live tailstock
[21:58:24] <robin_sz> wow .. just looking at embedded processors ...
[21:58:27] <robin_sz> # Includes 80/40 MHz
[21:58:25] <robin_sz> # 5 RS232
[21:58:25] <robin_sz> # 3 timers
[21:58:25] <robin_sz> # 256 KW Flash
[21:58:25] <robin_sz> # 64 KW SRAM
[21:58:26] <robin_sz> # watchdog timer
[21:58:28] <robin_sz> # 512 byte EE
[21:58:32] <robin_sz> # 3 timers
[21:58:34] <robin_sz> # 20 TTL I/Os
[21:58:36] <robin_sz> # 35 solenoid drivers
[21:58:38] <robin_sz> # 20 opto-couplers.
[21:58:42] <jepler> lernean_hydra: you'll find a lot of lathe words in here -- http://www.littlemachineshop.com/Info/print_chapter.php?FileName=GS_MiniLathe_01.htm
[21:58:52] <robin_sz> $199
[21:58:52] <jepler> lerneaen_hydra: maybe one of them is the one you're looking for
[21:59:12] <lerneaen_hydra> jepler: slightly larger: http://www.ironbill.se/bilder/6003.jpg
[21:59:40] <robin_sz> thats with 100 baseT and a compact flash card ...
[22:00:05] <lerneaen_hydra> hmm, center drill?
[22:00:50] <robin_sz> sounds like it
[22:01:41] <robin_sz> I use them for the first opearion of any drilling on a lathe
[22:01:46] <lerneaen_hydra> yeah
[22:01:58] <robin_sz> stiff enough not to get pushed off by the pip
[22:02:32] <lerneaen_hydra> exactly
[22:02:59] <robin_sz> http://www.tern.com/portal/content.asp?contentid=701
[22:03:02] <robin_sz> look at that
[22:03:06] <robin_sz> amazing value
[22:03:07] <lerneaen_hydra> http://www.lerneaenhydra.net/images/rsgallery/original/IMG_1285.JPG <-- you wouldn't think that there is 0.2mm backlash in X now would you ;)
[22:12:14] <lerneaen_hydra> I got backlash down to 0.02 via software
[22:21:13] <anonimasu> lerneaen_hydra: no
[22:21:24] <anonimasu> lerneaen_hydra: I have 0.02-0.04 of backslash :/
[22:21:33] <anonimasu> without adjusting
[22:21:55] <lerneaen_hydra> anonimasu: ballscrews?
[22:21:56] <anonimasu> * anonimasu is not really happy about it
[22:21:58] <anonimasu> yeah
[22:22:02] <anonimasu> at the price of the screws..
[22:22:04] <lerneaen_hydra> I've got cheap acme screws
[22:22:27] <anonimasu> next thing I do will be ballscrews with zero backslash nuts..
[22:22:41] <lerneaen_hydra> oh, you don't have that now?
[22:22:48] <anonimasu> no
[22:22:57] <anonimasu> just the default ones(standard)
[22:23:09] <lerneaen_hydra> oh ok
[22:23:28] <anonimasu> robin_sz: nice boards
[22:24:06] <anonimasu> robin_sz: I wonder if you could run a TP on them..
[22:28:08] <anonimasu> lerneaen_hydra: looks really nice
[22:28:29] <lerneaen_hydra> the entire setup cost 30k SEK new :)
[22:28:35] <lerneaen_hydra> all new parts
[22:29:02] <anonimasu> yep
[22:29:05] <anonimasu> I've seen thoose :)
[22:29:18] <anonimasu> that's a good price
[22:30:49] <anonimasu> especially for a completed machine..
[22:30:52] <lerneaen_hydra> yeah
[22:31:03] <lerneaen_hydra> well, it was manual to begin with, though it was easy to refit
[22:31:11] <anonimasu> how well does the software work?
[22:31:13] <lerneaen_hydra> very well
[22:31:19] <lerneaen_hydra> like a charm
[22:31:40] <anonimasu> * anonimasu has no idea what they run with
[22:31:47] <lerneaen_hydra> ?
[22:31:54] <anonimasu> the opti stuff..
[22:32:01] <anonimasu> or did you run emc?
[22:32:04] <lerneaen_hydra> I'm running EMC
[22:32:12] <anonimasu> ah ok
[22:32:14] <lerneaen_hydra> I just bought their steppers
[22:32:23] <lerneaen_hydra> bought geckos to drive them with
[22:32:25] <anonimasu> it looked like windows :p
[22:32:26] <lerneaen_hydra> and EMC to control
[22:32:32] <lerneaen_hydra> oh :/
[22:32:32] <anonimasu> they sell drivers and stuff..
[22:32:33] <lerneaen_hydra> yeah
[22:32:37] <lerneaen_hydra> expensive though
[22:32:50] <anonimasu> not that expensive I thought :p
[22:33:09] <anonimasu> http://www.industritorget.se/default.asp?visa_sida=kop/kop_annons.asp?MaskID=10283
[22:33:17] <lerneaen_hydra> 1200 sek for a driver
[22:33:20] <lerneaen_hydra> no damping
[22:33:37] <anonimasu> no midban resonance compensation?
[22:33:45] <lerneaen_hydra> nope
[22:33:48] <lerneaen_hydra> afaik
[22:34:02] <anonimasu> http://www.industritorget.se/pics/kop/upload/mvnnuyx8_b.jpg
[22:48:11] <lerneaen_hydra> 'night
[22:48:19] <anonimasu> night