#emc | Logs for 2010-12-11

[00:03:10] <Jymmm> JT-Shop: Walgreens dude, Upload online, then pickup whenever
[00:03:35] <Jymmm> JT-Shop: You can even have them developed at any walgreens in the coutnry.
[00:03:38] <JT-Shop> it's a digital camera...
[00:03:55] <theorb> theorb is now known as theorbtwo
[00:04:05] <Jymmm> JT-Shop: Yeah, upload to them, and they devleop them on Fuji CrystalArchive paper
[00:04:16] <Jymmm> Good for 75+ years
[00:04:25] <JT-Shop> I won't live that long...
[00:04:40] <JT-Shop> good to know though
[00:04:45] <Jymmm> But the children you dont know you have will
[00:05:19] <Jymmm> JT-Shop: I like walgreens as you can upload at 11pm and pickup at 3am
[00:05:45] <JT-Shop> won't work for me I'm asleep at both of those times...
[00:05:49] <Jymmm> at the 24hr stores
[00:05:59] <Jymmm> JT-Shop: Youre alseep aLL the time
[00:06:05] <JT-Shop> almost
[01:56:26] <Jymmm> http://www.sendacallfromsanta.com/
[06:48:35] <alan78> hello
[06:48:36] <the_wench> hello alan78, you have a question?
[06:49:15] <alan78> i'm a newbie and i have some questions
[06:49:44] <alan78> what software can i use to make my own .cnc files?
[06:49:54] <alan78> working in linux, course
[06:57:03] <dimas> alan78, HeeksCAD/HeeksCNC
[06:57:07] <dimas> for example
[06:58:07] <alan78> thanks! anything to start :D
[06:58:21] <dimas> you can open image file directly
[06:58:50] <dimas> it would be converted through image-to-gcode
[06:59:21] <alan78> ajá
[06:59:34] <alan78> i will go to see
[06:59:54] <alan78> (sorry for my bad english hehehe)
[07:01:00] <dimas> alan78, learning these tools myself now
[07:01:11] <dimas> where are you from?
[07:01:57] <alan78> Spain
[07:02:01] <alan78> you?
[07:02:37] <dimas> Russia
[07:03:55] <alan78> jejeje, a few km. between us
[07:04:01] <dimas> :)
[07:05:21] <alan78> you are starting in this too?
[07:05:39] <alan78> are you starting in this too? (better)
[07:06:02] <dimas> yea, just got my router moving
[07:06:36] <dimas> did one part with heekscad
[07:09:12] <alan78> in this case you are more avanced, i only had started to see documentation about emc, DIY machines, etc
[07:09:37] <dimas> do you have a machine?
[07:09:38] <alan78> had you make your own cnc machine?
[07:10:34] <dimas> I did small one from aluminum sheet pieces and scrapped printers
[07:11:52] <alan78> good! these is my machine idea
[07:12:15] <alan78> i had saw many machines like yours and looks fine
[07:13:34] <alan78> heekscnc it's only avaliable for windows and suse rpms
[07:13:57] <alan78> no source code or .deb for debian, ubuntu....?
[07:14:02] <alan78> :/
[07:14:25] <dimas> what distro are you on?
[07:14:37] <alan78> ubuntu
[07:14:56] <alan78> but source it's no problem
[07:15:57] <dimas> https://m21.hyte.de/downloads/heekscad/ubuntu_10.04_2010-09-11/ - package
[07:16:12] <dimas> ubuntu here too
[07:16:34] <dimas> http://code.google.com/p/heekscad/ - source
[07:17:50] <alan78> thanks, i will see it :)
[07:18:42] <dimas> np
[07:30:40] <alan78> downloading dependences :)
[07:31:26] <alan78> what steppers had you used in your machine?
[07:33:37] <dimas> different nema17 steppers from printers
[07:34:23] <alan78> how many degrees for step?
[07:35:03] <dimas> never used round steppers
[07:35:29] <dimas> usually 180, 200 steps per rev
[07:35:31] <alan78> aps, ok
[07:38:01] <alan78> no bad
[07:38:05] <alan78> no?
[07:38:50] <dimas> what?
[07:39:34] <alan78> it's a good precision
[07:40:26] <dimas> yes
[07:53:47] <SWPadnos_> SWPadnos_ is now known as SWPadnos
[07:54:57] <alan78> ufff, internet conection runs very bad
[07:55:08] <alan78> tomorrow more
[07:55:18] <alan78> dimas, thanks for all mate ;)
[07:55:56] <dimas> alan78, glad to help, good luck
[07:56:11] <alan78> bye!
[10:46:48] <psha> nullie: тут?
[10:47:14] <nullie> да
[10:48:00] <psha> у тебя случайно под рукой нет emc2-sim?
[10:48:09] <nullie> нет
[10:48:34] <psha> жаль, а то я на ноут забыл его залить, не откуда теперь сделать дамп разводки HAL какой-нибудьб
[15:18:19] <Jymmm> Does anyone have a way to "trace" an object dimensionally to get a 2D outline of it?
[15:19:22] <psha> use some raytracing libs? :)
[15:19:24] <JT-Shop> from a 3d cad file?
[15:20:35] <Jymmm> I want to created fitted case inserts for various handguns. So I need to get the dimensional outlines of the guns
[15:21:32] <Jymmm> Just needs to be 2D, and the max height which I can measure myself
[15:22:30] <Jymmm> Like this, but with dimensions http://upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Gun_outline.svg/586px-Gun_outline.svg.png
[15:23:42] <Jymmm> Heh... http://www.lesjones.com/www/images/posts/guntote.jpg
[15:23:44] <archivist> make a probe and measure
[15:24:49] <Jymmm> Seems cumbersome, I was thinking something like overhead projector on to a scanner sorta thing. It doens't have to be perfect, just close
[15:25:09] <Jymmm> It just has to be to scale
[15:27:02] <Jymmm> Has anyone used /made a 3D scanner? Maybe I could do that, then just flatten it.
[15:27:37] <psha> you may place laser in the mill and then drive over object :)
[15:28:56] <psha> i suspect there are some webcam laser scanning apps out of there
[15:29:26] <Jymmm> 3D scanner http://www.youtube.com/watch?v=w2uH1Ag2cAY
[15:29:46] <Jymmm> But I don't know if it'll do a direct down view to scale
[15:43:07] <Duckie> hi, how can increase the spindel speed (pwm)?
[15:43:35] <Jymmm> MORE POWER! Ug Ug Ug
[15:52:56] <JT-Shop> S90000000000
[15:55:14] <Duckie> do this setting is OK for the spindle?
[15:55:16] <Duckie> http://pastebin.com/hUwsP7db
[15:56:15] <Duckie> and is it possible to increase the pulse width?
[15:59:02] <JT-Shop> Duckie: my guess is the pwmgen.scale
[16:07:46] <Duckie> i have change the scale to example a higher value, but i still doesn't increase the speed.
[16:19:21] <JT-Shop> will your spindle speed increase when you use spindle speed override?
[16:32:55] <Duckie> i can from 0 -> to a speed (but not the speed 2500, it is a very low speed)
[16:59:52] <skunkworks> duckie - I think it is inverse
[17:02:13] <skunkworks> ok - I might be wrong
[17:02:58] <SWPadnos> is the spindle controlled by a DC voltage?
[17:03:33] <SWPadnos> the setup in the pastebin should cause the PWM to output a continuous high value for any speed 2500 or above
[17:03:54] <SWPadnos> (actually for anything slightly below 2500, due to the 0.22 offset)
[17:05:02] <SWPadnos> setting pwm-freq puts the pwmgen into PDM mode, so it outputs very short pulses continuously, keeping the average correct (it's not a true PWM at that point)
[17:07:34] <JT-Shop> * JT-Shop is glad someone came along that knows about pwmgen :)
[17:08:09] <SWPadnos> luckily, the web knows about PWMgen: :) http://www.linuxcnc.org/docs/2.4/html/hal_rtcomps.html#sec:PWMgen
[17:11:33] <skunkworks> Lately I just seem to be throwing out random answers unencumbered by logic
[17:11:47] <SWPadnos> it's so much easier that way
[17:26:03] <atmega> stepper max speed is usually dependent on PS voltage and motor inductance?
[17:27:13] <Duckie> i'm back from eating ( reading now)
[17:34:19] <Duckie> i got a DC voltage for the spindle
[17:38:10] <Duckie> motor speed 2500 and DC 85V 500W and 7.6A
[20:37:43] <SWPadnos_> SWPadnos_ is now known as SWPadnos
[20:55:52] <Farthen> hi. i'm running emc with x forwarding and am experiencing bad performance with the 3d view. is there any possibility to make it render it on the client?
[20:59:23] <Farthen> or some other possibility to display the user interface on another machine? i do not really understand all these network capabilities of emc
[21:02:15] <cradek> opengl automatically renders on the client - it's a feature of X
[21:02:28] <cradek> does your local display just have bad opengl performance?
[21:03:35] <Farthen> no, actually my remote computer is much worse than mine
[21:03:49] <Farthen> and that one renders it pretty fast
[21:04:42] <cradek> hm, weird
[21:05:44] <Farthen> hmm, it's probably because i'm using windows to display it (cygwin x11)
[21:05:59] <Farthen> i could try to use linux and check if that performs better
[21:06:34] <cradek> oh - I thought you had real X
[21:06:46] <cradek> who knows what those fake Xes do
[21:07:02] <cradek> you're lucky opengl works at all :-)
[21:07:06] <Farthen> ;)
[21:07:17] <Farthen> you may be right, yeah
[21:09:02] <Farthen> how advanced are the networking capabilities of emc? what can you do over the network and what not? i can't really find a lot about it on the wiki
[21:09:19] <mikegg> what's the biggest 2 pole breaker I can safely hook up ~60 ft of 10 gauge wire to?
[21:09:35] <mikegg> I was thinking 30 amps
[21:09:44] <cradek> mikegg: google 'ampacity' and see what 10 gauge can carry
[21:09:57] <mikegg> ah, thank you
[21:10:00] <cradek> it's easy to find a table if you know that magic word
[21:10:58] <archivist> ##electronics has an ampacity calculator in the bot
[21:11:50] <cradek> 10AWG, copper, enclosed, 33A
[21:12:12] <mikegg> yep 30 amps
[21:12:19] <mikegg> well that should be plenty
[21:13:09] <cradek> pretty silly - I'm cutting a pcb on my vmc - 5hp spindle cutting .005 deep .008 wide
[21:13:37] <JT-Shop> gets the job done = not silly
[21:14:29] <cradek> yeah, and I'll need all that extra power when I switch to the huge 1/16 end mill to cut it out
[21:15:19] <archivist> electricity cost v using a commercial prototype service
[21:17:12] <cradek> done in an hour vs done in 5 days
[21:25:59] <JT-Shop> so what are you making?
[21:28:08] <cradek> a clock
[21:28:47] <skunkworks> cradek: :) I have thought about cutting boards on the k&t
[21:29:20] <skunkworks> but it would be better for me to get the pcb mill working - using the k&t to finish machine the table (and rigid tap the holes)
[21:29:43] <cradek> like jr, it'd definitely be precise enough to cut .008 features...
[21:29:53] <cradek> kind of slow though, I bet.
[21:30:45] <skunkworks> yes
[21:31:11] <skunkworks> it is all about accelleration. I thought the jr had pretty high acc
[21:31:32] <cradek> yes - it's very fast - but at only 6krpm the cutting feed is quite limited
[21:31:42] <cradek> (I'm at 6ipm)
[21:32:17] <skunkworks> ah
[21:32:35] <skunkworks> time to mount a high speed spindle off the side ;)
[21:33:45] <cradek> yeah - I was going to mount my little spindle on it (actually just put it in a 3/4 ER collet in a long collet chuck) but I put it on max instead
[21:40:09] <Farthen> ah, i just found out that there is no way to make the forwarded opengl use hardware rendering. it all renders it in software which is of course slow
[21:42:22] <isssy> hi all any idea about ready board to convert the pwm from mesa to +-10v for spindle control?
[21:47:17] <cradek> isssy: easiest way would be 7i33
[21:47:36] <cradek> that's half its purpose in life (the other half is encoder input)
[21:49:11] <isssy> i am using one together with 7i43 and all 4 outputs are busy for the axes
[21:49:15] <mhaberler_> mhaberler_ is now known as mhaberler
[21:51:14] <isssy> if there is nothing ready on the market , i am planing to build a separate control connected on the rs232 port of the pc
[21:51:56] <isssy> using max3232 , pic and dac , so total- 3 chips to control all functions of the spindle
[21:52:03] <isssy> no only the speed
[21:59:52] <SadMan> is there any tutorial to get vfd spindle control via modbus working without spending hours reading all the confusing docs? ;-)
[22:09:54] <ries_> ries_ is now known as ries
[22:12:45] <SWPadnos_> SWPadnos_ is now known as SWPadnos
[22:17:37] <SWPadnos_> SWPadnos_ is now known as SWPadnos
[22:23:20] <JT-Shop> now you hurt my feelings
[22:38:32] <rooks> there there, somethin t o cheer you up http://www.youtube.com/watch?v=hrRpb5NrCDY&has_verified=1
[22:42:11] <SadMan> JT-Shop: sorry ;-)
[22:52:28] <JT-Shop> ok, but you still have to read the confusing docs http://www.linuxcnc.org/docview/html/examples_gs2_example.html
[22:52:41] <SWPadnos> depends on the VFD though
[22:52:54] <SWPadnos> a GS2 is pretty easy since the driver is already written
[22:52:57] <JT-Shop> yep, that one has to be a GS2
[22:53:23] <SWPadnos> huh. did I ever write a manpage for that?
[22:55:08] <JT-Shop> you or me did something http://www.linuxcnc.org/docview/html/man/man1/gs2.1.html
[22:55:32] <SWPadnos> maybe you and me :)
[22:55:37] <JT-Shop> I guess I wrote that after scrolling down
[22:55:53] <SWPadnos> hmm. -p is wrong - same description as -name
[22:55:55] <SadMan> so should i just hack that gs2 component to suit my inverter?
[22:56:09] <SWPadnos> SadMan, sure, that may be an easy way
[22:56:23] <SWPadnos> there isn't any generic modbus driver
[22:56:48] <SWPadnos> you might be able to coax classicladder into doing something for you, but that's not likely to be the best or easiest solution
[22:56:52] <SadMan> modbus support in classicladder can't be used for such stuff?
[22:57:38] <SWPadnos> it might be able to be, but I couldn't tell you how to do it or what the limitations might be
[22:58:35] <SadMan> ok, so i'll go gs2 route then
[22:58:36] <SadMan> thanks
[22:58:43] <SWPadnos> sure
[22:58:52] <SWPadnos> let me know if you have any questions
[22:59:06] <SWPadnos> I might be able to answer, though I no longer have access to a GS2
[23:00:37] <JT-Shop> I have mine but it is over at the other shop connected to my BP spindle :)
[23:00:55] <SWPadnos> heh
[23:01:09] <SWPadnos> "mine" was borrowed from Ray at CNC workshop a few years ago :)
[23:02:00] <SadMan> mine's some chinese cheapo one but i've tested the communication and it seems to work through modbus
[23:02:07] <SadMan> i just need to intergrate it with emc
[23:02:17] <Jymmm> FUCK ME.... got trapped in the leakage of a bug bomb
[23:03:20] <JT-Shop> take a nap Jymmm
[23:03:31] <Jymmm> permanently
[23:05:14] <Jymmm> That shit Asphyxias you and THEN some
[23:18:04] <mhaberler> I've hacked the GS2 driver to talk to a toshiba, was interesting ut doable:
[23:18:06] <mhaberler> http://git.mah.priv.at/gitweb/vfs11-vfd.git
[23:35:20] <elmo_cnc> i tried to run the latency test. no dice.
[23:36:18] <elmo_cnc> ok, just tried from the console. said 'bc' was bad command. lol. installed and it now runs.
[23:36:38] <elmo_cnc> 43000nS Max Jitter. That is decent?
[23:38:35] <elmo_cnc> btw, i installed EMC with the install script. it didnt seem to think that 'bc' was needed. i guess someone needs to add it as a dependency for latency test.
[23:39:20] <JT-Shop> elmo_cnc: http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Latency-Test
[23:51:54] <elmo_cnc> well, dont know why it is so high