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[00:00:16] <Valen> I like the idea of not using the one that pushes my mill around to run the computer ;->
[00:00:16] <andypugh> Aye. But you probably have that anyway
[00:00:17] <jd896> Ah I just noticed the 525 has the 24pin atx connector and the 4pin 12 volt
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[00:00:40] <Valen> also last I checked they were like $60 vs $30 for a regular supply
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[00:01:27] <andypugh> http://www.mini-box.com/picoPSU-80
[00:01:29] <andypugh> $25
[00:01:48] <Valen> wow they have come down in price
[00:02:07] <andypugh> That's the smallest. But with an SSD, you don't need any more
[00:02:25] <Valen> I'm going to do a carputer soon so i'm rather interested
[00:02:37] <Valen> 80W should be plenty even for a spinning drive
[00:03:51] <Valen> they only pull 5-10 as a rule
[00:04:37] <Valen> I was thinking of adding a second small battery to run the carputer off, UPS style
[00:04:42] <jd896> For that they do the m3 and m4 models with auto power cycle for pc on off with ignition
[00:05:32] <Valen> becomes expensive then
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[00:06:05] <jd896> Even at the full 80watt your still well under 10amp draw
[00:06:22] <jd896> Yeah around the $60 mark
[00:06:40] <Valen> I can get a 1Ah SLA for a few $ and combine with a diode and keep it all inside the 2xDIN case
[00:07:07] <Valen> hooking up an ignition sense shouldn't be too hard, but I'd like to have some GPIOs anyway
[00:07:26] <Valen> monitor battery voltages etc so i can run the computer with the engine off
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[00:08:13] <jd896> Ah not the average carputer setup then
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[00:08:38] <Valen> I also want a buttload of cameras around the place as a "black box" recorder and retrofit one of those fancy all around looking reverse cameras
[00:08:49] <Valen> I was thinking of putting a quad core I5 in it for the lulz lol
[00:09:09] <Valen> the biggest issue I'm having is i want turn by turn navigation, google voice would be sufficent
[00:09:21] <Valen> bah google maps i mean
[00:09:42] <Valen> but short of running an android emulator it seems problematic
[00:09:57] <andypugh> My iphone has started doing that.
[00:10:07] <andypugh> OK, so the maps are hopeless now.
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[00:10:32] <Valen> I hear talk that goolge is going to release maps for iphone 6
[00:10:41] <Valen> ios 6 rather
[00:10:56] <Valen> if apple allows it will be the question
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[00:16:07] <jd896> You may want to follow openice The_nGhost_Project though it was a couple of yeahs ago when I was looking
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[00:18:14] <Valen> interesting
[00:18:33] <Valen> looks pretty good really
[00:19:08] <Valen> though the domain looks to be squatted
[00:19:17] <Valen> Last Update: 2010-05-29
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[00:23:25] <jd896> Yeah shame
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[00:25:16] <jd896> As far as the picopsu goes the one I've got plans for that's on order was £45 delivered an m3 atx 125 6-24volt
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[00:45:33] <Aero-Tec> hello
[00:45:47] <Aero-Tec> so when writing Gcode for EMC2
[00:46:06] <Aero-Tec> what is the best way to rem out some gcode?
[00:47:11] <micges> ; on begin of line
[00:47:21] <Aero-Tec> just to temporarily disable the code
[00:47:30] <Aero-Tec> cool
[00:47:32] <Aero-Tec> thanks
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[01:22:28] <Aero-Tec> I need to make 1000 of one part
[01:22:36] <Aero-Tec> I would like to set up a loop
[01:22:54] <Aero-Tec> but I would like to keep track of where the loop is
[01:23:05] <Aero-Tec> so a running counter
[01:24:05] <Aero-Tec> is there a easy way to have a counter or to see the value of a variable while the program is running through a loop?
[01:25:44] <Aero-Tec> any help would be welcomed
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[01:31:06] <micges> Aero-Tec: use M68 E0 Qn and display motion.analog-out-00 on pyvcp panel
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[01:32:08] <Aero-Tec> thanks again
[01:32:24] <Aero-Tec> so in Gcode
[01:33:10] <Aero-Tec> I do M68 E0 Q0 or Qn
[01:33:41] <Aero-Tec> is n the number of display motion.analog-out-00?
[01:34:07] <Aero-Tec> so 0 for 00 and 1 for 01 and so on?
[01:34:25] <micges> E0 is for out-00
[01:34:28] <micges> Q is value
[01:34:30] <Aero-Tec> or is the E the one used for the number?
[01:34:43] <Aero-Tec> ok
[01:34:47] <Aero-Tec> got it
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[01:35:14] <Aero-Tec> so N can be a variable
[01:35:38] <Aero-Tec> so Q count
[01:36:04] <Aero-Tec> and count would be the count value to display
[01:36:14] <micges> yes
[01:36:15] <Aero-Tec> do I have it right?
[01:36:20] <Aero-Tec> cool
[01:36:29] <Aero-Tec> thanks a mill
[01:36:32] <micges> Q[#count]
[01:37:10] <Aero-Tec> have to get used of the EMC way of doing code
[01:37:18] <Aero-Tec> new to all this
[01:37:36] <Aero-Tec> thanks for the help
[01:37:57] <micges> welcome
[01:46:26] <Tom_itx> does it auto increment?
[01:46:58] <Tom_itx> or would you do Q[#count+1] ?
[01:49:07] <micges> if he want 1000 times so he must increment it somewhere
[02:03:27] <Aero-Tec> the loop will inc it
[02:03:43] <Aero-Tec> just need to know where the count is
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[02:31:51] <r00t4rd3d> http://diyourfaceoff.com/diyourfaceoff-store/wooden-arduino-tray/
[02:34:58] <micges> Aero-Tec: you must create counter
[02:35:03] <Valen> pretty
[02:35:15] <micges> #counter = 0
[02:35:31] <micges> #counter = [#counter + 1]
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[07:17:23] <Loetmichel> mornin'
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[07:49:55] <DJ9DJ> moin
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[12:12:22] <r00t4rd3d> http://i.imgur.com/7E1eM.jpg
[12:12:25] <r00t4rd3d> nes in nes
[12:26:08] <jthornton> anyone proficient on converting either a eps or svg to png, I'm not having any luck with imagemagic
[12:30:26] <mazafaka> inkscape or gimp maybe
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[12:30:56] <mazafaka> i don't quite know, svg seems to be a vector graphics
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[12:32:34] <jthornton> trying inkscape now
[12:33:53] <jthornton> inkscape cuts the image off
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[12:44:33] <jthornton> getting closer
http://imagebin.org/234019
[12:49:24] <alex_joni> morning jthornton
[12:49:43] <jthornton> morning alex_joni
[12:50:14] <r00t4rd3d> i can convert eps to dxf
[12:50:30] <alex_joni> jthornton: I saw you were looking for the faq link?
[12:50:54] <jthornton> yes it seems to have faded away
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[12:51:07] <alex_joni> yup, I think joomla removed it
[12:51:07] <jthornton> found it in old. but seems outdated too
[12:51:26] <alex_joni> and I didn't see a real point to keeping it around
[12:51:32] <jthornton> I just removed the link
[12:51:35] <jthornton> me neither
[12:51:40] <alex_joni> we could install a component for that, but I think just removing it is better
[12:51:45] <jthornton> I was just fixing broken links
[12:52:45] <alex_joni> cool, glad to hear it
[12:57:36] <jthornton> the new tag on the forum seems to get confused
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[13:21:52] <jthornton> http://imagebin.org/234024
[13:23:01] <Theta9> that thing looks awesome
[13:23:37] <jthornton> thanks, I'm getting there
[13:23:57] <Theta9> what language?
[13:24:10] <jthornton> python gtk glade sqlite
[13:24:26] <Theta9> sweet
[13:25:35] <jthornton> when you enter in a new value for measure over wires it calculates the pitch diameter
[13:26:01] <jthornton> if you don't have the Flynn thread wires you can change the thread wire dia too
[13:26:36] <jthornton> I'm still pondering how to handle the metric taps
[13:26:51] <alex_joni> jthornton: what tag?
[13:27:50] <jthornton> the one that shows new posts like (1 NEW)
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[13:53:38] <alex_joni> jthornton: you need to be logged in for those
[13:54:05] <alex_joni> they seem to be working for me I guess
[13:57:12] <jthornton> what I see is new tags for threads that are not new and I was the last one to reply often
[13:58:31] <alex_joni> ah, hmm
[13:58:50] <alex_joni> and if you click the tag, it takes you to your own messages?
[13:59:59] <jthornton> yes the last tag does that
[14:00:16] <jthornton> I even looked to see if someone had modified a message and nope
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[14:05:02] <jthornton> r00t4rd3d, do you think eps to dxf to png is possible?
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[14:06:32] <r00t4rd3d> maybe, link the file
[14:06:44] <r00t4rd3d> i might be able to do eps to png
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[14:09:14] <cncbasher> jthornton:gimp should convert svg
[14:09:19] <jthornton> http://git.linuxcnc.org/gitweb?p=linuxcnc.git;a=blob;f=docs/src/hal/images/stepgen-type2-4.eps;h=3f9a6e4d53a4fd06e980b22e3f4ee1e8449845b7;hb=refs/heads/v2.5_branch
[14:09:31] <jthornton> it does but the quality sucks
[14:09:46] <cncbasher> arh
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[14:13:53] <r00t4rd3d> that looks all messed up
[14:14:29] <jthornton> want the svg?
[14:14:49] <r00t4rd3d> I dont think i can make it a png
[14:16:35] <r00t4rd3d> everything but
[14:17:48] <r00t4rd3d> none of the lines are straight in that though
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[14:18:08] <r00t4rd3d> looks like spaghetti
[14:18:37] <jthornton> http://linuxcnc.org/docs/html/hal/rtcomps.html#_step_types_a_id_sub_stepgen_step_types_a
[14:18:54] <jthornton> should look like step type 2-4
[14:19:39] <r00t4rd3d> i can just screen shot that page and make it a png
[14:19:59] <r00t4rd3d> you just want the graphic ?
[14:20:02] <jthornton> that is a png and there is a mistook on it
[14:20:22] <jthornton> the eps and svg is correct but the png is not and that is what the docs use
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[14:23:26] <r00t4rd3d> http://i.imgur.com/E9dqG.png
[14:24:05] <jthornton> yep that is the png as it is now
[14:25:02] <jthornton> http://imagebin.org/234032
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[14:27:39] <jthornton> ugh dumb guy I am the dxf is there too
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[14:28:10] <jdh> does anyone have flynn wires?
[14:28:16] <jthornton> I do
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[14:29:11] <jdh> cool. I didn't know they existed :)
[14:29:12] <jthornton> anyone want to give the Machine Shop Calculator a whirl?
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[14:29:28] <jthornton> yea you can get them from anywhere
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[14:51:31] <r00t4rd3d> http://i.imgur.com/qr7yX.jpg
[14:51:39] <r00t4rd3d> arduino bumper im gonna cut
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[15:30:02] <jdh> I need one for my Pi
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[15:59:00] <r00t4rd3d> find a mechanical drawing of one and import it into aspire and trace it
[15:59:21] <jdh> cut2d is simpler for that
[15:59:54] <r00t4rd3d> aspire is cut2d
[16:00:09] <skunkworks> http://electronicsam.com/images/KandT/wrench.JPG
[16:00:12] <jdh> simpler
[16:00:25] <r00t4rd3d> less tools and tool paths
[16:00:37] <skunkworks> http://electronicsam.com/images/KandT/wrenchscale.JPG
[16:04:13] <cpresser> skunkworks: nice. but i am wondering, the 'open' part of the wrench.. how can you fit that on a nut. since only 1/6th you cant 'slide' it on a bolt!?
[16:06:16] <cradek> how did you do the sharp inside corners?
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[16:30:21] <skunkworks> cradek: probably a file... (iirc it was done with a 1/4" mill)
[16:30:52] <cradek> heh that works
[16:31:08] <cradek> WE NEED A MILLION DOLLAR EDM MACHINE no wait I have a file
[16:31:21] <skunkworks> these are probably 15 years old or more. One of the first thing we made on the big machine ;)
[16:31:33] <skunkworks> wow maybe 20 years
[16:34:53] <archivist> should I cnc my filing machine? (which I have never used)
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[16:38:57] <skunkworks> cpresser, if you look at the picture where the wrench is on the collet - you can see that the nut is quite a bit bigger than the biggest collet diameter/
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[17:24:07] <yoyoek1> hi
[17:24:58] <skunkworks> hi
[17:25:03] <jdh> hi
[17:25:49] <yoyoek1> honor report: mgcodegenerator update :)
[17:28:12] <skunkworks> Oh - I recognize the name from cnczone!
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[17:28:54] <yoyoek1> :) I am pleased to hear that
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[17:30:53] <skunkworks> http://www.cnczone.com/forums/opensource_software/95964-blender_gcode_mgcodegenerator.html
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[17:42:14] <andypugh> Isn't MattyMatt Using Blender?
[17:55:33] Keith____ is now known as KeithT
[17:55:53] <L84Supper> andypugh, did you decide on your serial resolver data transfer scheme?
[17:56:29] <andypugh> I spotted significant problems that made that level of optimisation pointless
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[17:57:06] <L84Supper> problem solved :)
[17:57:51] <yoyoek1> Ok time to get drunk. Have fun with the new version!
[17:57:55] <yoyoek1> cu
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[18:20:55] <skunkworks> in case that was too vauge...
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?GcodeGenerator
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[18:37:22] <ilias> good evening
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[18:40:05] <ilias> i need some help
[18:40:26] <ilias> mainly h/w help
[18:40:51] <andypugh> Ask away.
[18:40:56] <andypugh> We exist to serve.
[18:40:58] <ilias> using a 7i77 board
[18:41:07] <ilias> :)
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[18:41:19] <IchGuckLive> happy halloween B)
[18:41:27] <andypugh> OK. I did once see a 7i77 board.
[18:41:35] <ilias> when I enable the drive and the output is zero the motor is moving
[18:42:00] <andypugh> Velocity servo drive?
[18:42:42] <ilias> it's not 7i77's problem, because when I disconnect the analog out, that is the drive does not get any signal at all, the motor is still moving
[18:42:49] <ilias> yes velocity
[18:43:13] <andypugh> You need to "null out" the drive. There is probably an adjustment somewhere.
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[18:43:54] <IchGuckLive> ilias: Drive type manafacture ?
[18:44:21] <pcw_home> Yes you can zero this at the drive. but normally the drive should not be enabled until the LInuxCNC/PID loop is operating
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[18:44:32] <ilias> sorry for that...
[18:44:55] <IchGuckLive> ilias: Drive type manafacture ?
[18:45:13] <pcw_home> (zeroing is always good anyway so your PID loop is not "fixing" it)
[18:46:24] <andypugh> I am alomost missing my spammer-killing hobby.
[18:46:28] <ilias> well "nulling out" the drive is interesting, I concidered the drive to be setted up, because it was working with a different controller
[18:46:50] <pcw_home> how fast does it drift?
[18:47:00] <andypugh> The old controller might have had a zero offset all of its own
[18:47:27] <ilias> AB oss 2000 it's an old one
[18:47:40] <ilias> allen bradley under the brand of osai
[18:48:26] <pcw_home> in any case this is good to null out, but once properly setup you should never see this behavior
[18:48:28] <pcw_home> since the drives would not normally be enabled if the PID loop is not controlling them
[18:48:29] <ilias> andy, giving a value for the bias parameter doesn't change anything though
[18:48:52] <ilias> true
[18:49:27] <pcw_home> thats not where this needs to be nulled, its the drive itself
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[18:49:54] <ilias> yes, i see, I'm just mentioning it
[18:49:54] <pcw_home> if its an old enough drive it will have a potentiometer
[18:50:53] <ilias> any other ideas? i will try nulling out, but are there any other ideas handy, in case nulling out doesn't work
[18:51:13] <pcw_home> ignore it and get your drive enables working
[18:51:36] <ilias> did that
[18:52:06] <ilias> but linking the feedback to axis, gives me following error,
[18:52:42] <pcw_home> well thats expected unless you have tuned the PID loop
[18:52:54] <ilias> unlinking it from axis, the pid is constantly trying to stabilize the system
[18:54:09] <ilias> because when the output is zero and the drive is moving, i.e. feedback changes, an error is produced which has to be corrected
[18:54:49] <pcw_home> sure so it cannot drift if the PID loop is close
[18:54:57] <pcw_home> closed
[18:57:06] <pcw_home> Thats why I'm saying (and assuming this is a slow drift)
[18:57:08] <pcw_home> You should never see this drift normally (and all velocity mode servos drift a little)
[18:57:31] <ilias> yes but this way i need to write extra code for the pid loop to be turned off after some time of error constantly within the deadband
[18:58:21] <pcw_home> No not true at all
[18:58:36] <ilias> how's that?
[18:59:15] <pcw_home> have you tuned you PID loop? If not, following errors are expected
[18:59:55] <pcw_home> and a slow drift is irrelevant
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[19:00:53] <pcw_home> for tuning you will need to set you ferror and min ferror to a fair size (say 1 inch or 25 mm)
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[19:01:09] <ilias> no not yet, i concentrated on eliminating this problem
[19:01:25] <pcw_home> its unimportant
[19:01:52] <ilias> ok
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[19:02:36] <ilias> so should ferror be larger than the deadband?
[19:03:30] <pcw_home> ferror needs to be huge to accomplish tuning (and deadband should be 0)
[19:04:25] <ilias> that's correct!
[19:04:45] <ilias> that's seems to be the way to go, yes you are right
[19:04:48] <pcw_home> first thing for safety is to make sure the drives are not enabled until linuxCNC machine on
[19:04:50] <pcw_home> and are disabled by a ferror
[19:05:29] <pcw_home> then a 1 inch or 25 mm ferror allows tuning but will stop a runaway
[19:05:51] <ilias> yes this is currently the case
[19:06:06] <ilias> and 25mm seems a good number to go
[19:07:28] <ilias> it seems that there is something that I am not getting right though
[19:07:30] <pcw_home> JT has a simple one page guide on tuning velocity loops dont know if he's around or not
[19:07:42] <ilias> how is it possible to have 0 deadband?
[19:08:21] <jthornton> http://gnipsel.com/linuxcnc/tuning/servo.html
[19:09:01] <ilias> thanks a lot JT
[19:09:12] <IchGuckLive> Question to the USA world series parade what is that for on halloween
[19:09:50] <pcw_home> deadband is mainly for eliminating 1-2 count dither, mainly to lower acoustical noise
[19:09:51] <pcw_home> in the grand scheme of things its not important (and is best set to 0 for initial tuning)
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[19:11:58] <ilias> yes but in my case I guess it can't be accomplished since even if it arrives to the desired position, the motor will continue moving
[19:12:17] <ilias> even id pid.output is 0
[19:12:33] <ilias> even if
[19:14:10] <ilias> anyway, thanks for your help, I'll try all the above and if I still have problems, I know where to ask forhelp
[19:15:54] <IchGuckLive> best to reset the driver to a factory default as AB oasics do
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[19:18:28] <pcw_home> No the motor will stop (the PID output will be set so the motor stops)
[19:18:58] <ilias> I hope so
[19:19:16] <pcw_home> Thats the PID loops job
[19:20:49] <pcw_home> but adjust the drive if it bothers you...
[19:23:39] <ilias> ok... thank you very much pcw... I will give feedback on my progress soon.
[19:23:58] <ilias> thank you all for your time
[19:24:14] <ilias> bye
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[19:24:54] <r00t4rd3d> http://www.codeweavers.com/
[19:25:00] <r00t4rd3d> crossover is free for 12 months
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[21:20:31] <MattyMatt> I forked mgcodegenerator
[21:21:44] <MattyMatt> I wrote to yoyoek but he never replied
[21:21:55] <MattyMatt> hope he comes back
[21:22:28] <MattyMatt> I did some nifty gui mods
[21:23:09] <MattyMatt> I guess I should put it on the wiki
[21:24:36] -!- djdelorie has quit [Ping timeout: 240 seconds]
[21:26:28] <MattyMatt> I did all toolpaths as blender curves in my bit, so they could support arcs and show as a different colour
[21:27:08] <MattyMatt> also blender can track animations to curves easily (as easy as anything in blender anyway)
[21:29:14] <MattyMatt> I stopped using the script tho. the gcode it made was too verbose compared to handwritten
[21:30:13] <MattyMatt> for my simple geometric jobs at least
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[21:53:16] <andypugh> I thought you were carving figurines?
[21:53:31] <andypugh> Or is it all Mendel parts?
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[22:17:12] <DJ9DJ> gn8
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[23:02:08] <Valen> So I'm planning a new router
[23:02:30] <Valen> and I'm tossing up between gecko 320's and mesa 7i29's for drive
[23:02:42] <Valen> any comments?
[23:03:43] <andypugh> I think the 7i29 works out cheaper for 4 axes and less cheap for 3?
[23:04:11] <Valen> geckos are ~$100 each, 7i29 is $600 for a pair
[23:04:41] <Valen> the geckos look like steppers to emc dont they?
[23:05:36] <Valen> I would like to put size 34 servos on from
http://www.kelinginc.net/ServoMotors.html but I cant find any drivers that will do 40A
[23:09:36] <andypugh> http://www.linuxcnc.org/index.php/forum/30-cnc-machines/25790-cincinatti-arrow-500-retrofit-questions?start=6&lang=english#26027 might be worth a look.
[23:10:07] <andypugh> The drives plug directly in to mains power.
[23:10:47] <Valen> do keep in mind we are in 240V land
[23:11:09] <andypugh> 240 or 230?
[23:11:31] <Valen> well its 230+10-2% or something like that
[23:11:44] <Valen> but if you stick a meeter in the wall its 240 lol
[23:12:14] <andypugh> (You might have to ask specifically, the drives say 110 - 230VAC)
[23:12:45] <andypugh> +/- 5%
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[23:13:08] <andypugh> So 241.5V
[23:13:31] <Valen> if its being hooked to mains it should be fairly tollerent
[23:13:38] <Valen> but its a good point
[23:14:07] <Valen> thats a pretty spendy servo drive, in comparison to the mesa or gecko offerings
[23:14:24] <Valen> cheap compared to a fanuc of course
[23:14:40] <Valen> also needs an ac servo motor
[23:15:07] <andypugh> Well, quite. $550 for the drive and motor is a good price for a 750W brushless.
[23:15:22] <Valen> thats true
[23:15:29] <Valen> but still more than the budget
[23:15:42] <Valen> isn't mesas brushless in that range?
[23:16:09] <andypugh> $275 for the 8i20. But what motor are you going to use?
[23:16:20] <Valen> phat hobby brushless?
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[23:16:37] <andypugh> + encoder + Halls?
[23:16:55] <andypugh> Don't get me wrong, I like the 8i20. I have 3
[23:17:41] <Valen> all too spendy though
[23:18:15] <andypugh> Yo need to add an encoder to the Keling I think.
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[23:18:45] <Valen> I was looking at
http://www.kelinginc.net/CNC23ServoMotorPackage.html
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[23:19:42] <andypugh> I thought you wanted bigger motors?
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[23:20:09] <Valen> I would *like* bigger motors, but i dont want to *pay* for them
[23:21:06] <andypugh> 1180 all-in for the Keling, 1650 all-in for the dmm-tech
[23:21:16] <Valen> hmm
[23:21:29] <Valen> 7i29's was about 1650
[23:22:59] <Valen> interesting
[23:23:00] <andypugh> dmm-tech is an unknown quantity with LinuxCNC, but they seemed to think it ought to work.
[23:23:05] <Valen> phone one sec
[23:23:24] <andypugh> (it is a conventional +/-10V + encoder setup)
[23:24:53] <Valen> would need to get a +-10v converter too
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[23:27:51] <andypugh> I guess you were going to use a Mesa card?
[23:27:58] <Valen> yeah
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[23:29:19] <andypugh> The cheapest that fits the 7i29 is the 5i20 at $200. For the same price you can have the 5i25 / 7i77 combo with several +/- 10V and encoder channels.
[23:29:37] <Valen> 5i23 is a given
[23:30:09] <andypugh> Any particular reason?
[23:32:11] <Valen> i like em lol
[23:32:33] <Valen> i also figured for $30 extra might as well get the biggest card no?
[23:32:39] <Valen> back off the phone now
[23:32:59] <Valen> I need 4 axis btw, doing a gantry system
[23:34:16] <andypugh> 7i77 has 6 sets of servo drive pins. And you don't need any sort of BoB
[23:34:41] <Valen> so that 750W one comes to 2240 plus 159 so $2400
[23:35:22] <andypugh> 159?
[23:35:24] <Valen> does that dyn3 feed back position
[23:35:29] <Valen> the ti77
[23:35:34] <Valen> 7i77
[23:35:52] <andypugh> You can't use the 7i77 with the 5i23.
[23:36:30] <Valen> oh, i never used a 25 pin anything io
[23:36:44] <andypugh> (They have 50 pins really)
[23:37:07] <Valen> whats the difference bewteen the 5i20 and the 5i23 then?
[23:37:26] <Valen> ahh nvm
[23:37:29] <Valen> misread
[23:37:32] <andypugh> And a lot of the functions are serially controlled, so don't use as many pins as you might expect.
[23:38:01] <andypugh> 5i20 has a smaller FPGA than 5i23
[23:38:02] <Valen> so a 5i25 you suggest
[23:38:17] <andypugh> I don't suggest anything :-)
[23:38:17] <Valen> that takes ~$100 off the price
[23:38:35] <Valen> you do know IRC is a legally binding form of communication right? ;->
[23:38:40] <andypugh> 5i25 + 7i77 comes as a pair for $239
[23:39:11] <Valen> thing is I had been planning on using a 5i23 so I had been excluding that from my pricing
[23:39:15] <andypugh> So, same price as a 5i23, but no need for adapter boards.
[23:39:59] <Valen> the options I had in mind were this, $650 size 23 steppers with everything needed to run
[23:40:07] <Valen> $1200 servos with gecko drives
[23:40:15] <Valen> $1600 same servos with mesa drives
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[23:40:48] <andypugh> For reference, the dmm AC servos have the same peak torque as the Keling NEMA 34 brush servo, but twice the rated torque.
[23:41:09] <Valen> this paticular application is a wood router
[23:41:19] <Valen> with delusions of Al and similar
[23:41:23] <Valen> 1.2M to a side
[23:41:39] <andypugh> I think 23 steppers will be a little slow for the travels.
[23:42:02] <Valen> that was my opinion too, the "client" (my dad) likes servo systems too
[23:42:08] <andypugh> (geared down far enough they can handle the cuttinf forces, my mini-mill cuts steel with NEMA 23 steppers)
[23:42:30] <Valen> I worked out that with the servo on a 5:1 ratio it will hit 4000mm/minute which is the speed he said he wanted
[23:42:45] <Valen> running the servos at 60V or so
[23:43:55] <Valen> the rated speed on the dmm is 3000 vs the kelig at 4000
[23:44:04] <Valen> 4600 or something rather
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[23:49:58] <andypugh> Max speed of dmm is 6000
[23:50:27] <andypugh> But as a stepper runs out of puff at about 300rpm it's fairly moot.
[23:51:12] <andypugh> I have no experience of any of the combos being discussed.
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[23:53:00] <Valen> I'm leaning away from that dmm one
[23:53:17] <Valen> it looks like its higher power, but not higher peak torque
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[23:53:37] <Valen> and with the way we use the servos I'm not sure we would use that much power as much as the torque
[23:53:43] <Valen> also I really dislike analog stuff
[23:55:10] <andypugh> They have step/dir drives and servos (cheaper, too) equivalent to the Gecko. But no encoder feedback.
[23:55:44] <andypugh> You can run the step/dir geckos with velocity-mode stepgens to get something equivalent to a velocity-control drive.
[23:56:28] <Valen> Personally I'm keener on the mesa chain, it just "feels" better, theres only one loop yaknow
[23:56:51] <Valen> but people seem to like servo controllers outside EMC
[23:57:04] <andypugh> I feel about brush motors the way you feel about analogue :-)
[23:57:20] <Valen> don't misunderstand, I would like brushless too
[23:57:26] <Valen> but it just costs more
[23:57:45] <andypugh> Any Aussie sources?
[23:57:51] <Valen> lol
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[23:58:20] <Valen> if one did exist it would probably be cheaper/faster to make it from magnets and wire
[23:58:38] <andypugh> Bosch used to make some pretty serious 24V 750W motors, they were the tool of choice for Robotwars.
[23:59:00] <Valen> yeah, we are using 500W scooter motors on our current mill
[23:59:01] <Valen> 1:1 drive
[23:59:16] <Valen> with some "modified" 200W mesa drives
[23:59:26] <Valen> IE defeating the current limit lol
[23:59:32] <Theta9> 24v scooter motors?
[23:59:41] <Valen> i think 24 yes
[23:59:55] <Valen> the problem is the shaft is so tiny we cant put an encoder on it
