#emc | Logs for 2005-03-19

[16:57:14] <A-L-P-H-A> I can never get my linux shell to scroll back.
[17:33:13] <rayh> I don't know if I can handle 2 of alex<g>
[17:36:53] <SWPadnos> shift-<pg-up>, but it stops working if you switch consoles (the buffer is lost when you switch)
[17:38:16] <A-L-P-H-A> SWPadnos, nothing I can do with that, on a "screen"?
[17:38:29] <A-L-P-H-A> I mean, using screen, just won't allow for anything then?
[17:38:47] <SWPadnos> you mean running 'screen', or on a text-mode console screen?
[17:39:00] <A-L-P-H-A> running the command "screen"
[17:39:06] <SWPadnos> I don't know anything about using screen
[17:39:13] <SWPadnos> (though I'd love to learn someday)
[17:39:22] <A-L-P-H-A> oh... well... if you have a linux shell you should use screen,
[17:39:28] <A-L-P-H-A> very handy.
[17:39:31] <SWPadnos> I know, but I don't :)
[17:40:11] <SWPadnos> I don't really have servers that I want to use from different locations, or machines that I want to leave processes running on, so it's not quite as useful for me
[17:41:02] <a-l-p-h-a-2> see.
[17:41:08] <a-l-p-h-a-2> there's another one o me.
[17:41:12] <a-l-p-h-a-2> of
[17:41:21] <SWPadnos> three is too many
[17:41:46] <a-l-p-h-a-2> now, if I could make ircII look pretty.
[18:07:07] <rayh> A-L-P-H-A, I get back commands on all terminals. Even those on F1...F6
[18:16:53] <A-L-P-H-A> rayh, via shell? on my local system I can... but not via a shell.
[18:18:42] <Jymmm> Mornin Folks!
[18:18:48] <A-L-P-H-A> hi Jymmm
[18:19:35] <rayh> Works for ssh on the local network here.
[18:19:58] <A-L-P-H-A> hmm... I couldn't here. strange... I'm ssh (via putty) to my shell, and it wasn't doing much
[18:20:23] <rayh> I wonder if putty strips some of those things.
[18:20:35] <A-L-P-H-A> dunno... i'll later.
[18:20:39] <Jymmm> what's that?
[18:20:44] <A-L-P-H-A> more important thing is getting a digital tachometer running. :D
[18:20:54] <A-L-P-H-A> putty? putty is an SSH client for win32
[18:20:57] <Jymmm> rayh strip what?
[18:21:19] <Jymmm> A-L-P-H-A putty I'm far too aware of =)
[18:21:22] <rayh> The back stack of commands in a terminal
[18:21:30] <Jymmm> history?
[18:21:37] <A-L-P-H-A> rayh, not the commands.
[18:21:44] <A-L-P-H-A> but the scroll log/text
[18:21:49] <A-L-P-H-A> like in ircii.
[18:21:57] <Jymmm> Oh, that is an option in the setup
[18:22:10] <A-L-P-H-A> what setup? screen? putty? ircii?
[18:22:14] <Jymmm> putty
[18:22:27] <A-L-P-H-A> this is the scenario.
[18:22:31] <Jymmm> but are we talking history or scrollback?
[18:22:45] <A-L-P-H-A> history.
[18:22:48] <A-L-P-H-A> login via ssh -> screen to start a session -> start ircii. log off.
[18:22:51] <Jymmm> using screen ?
[18:23:26] <A-L-P-H-A> log back, reconnect to that screen session after some text has been posted... try and scroll back/up in ircii. doesn't scroll up.
[18:23:28] <A-L-P-H-A> history is lost
[18:23:44] <Jymmm> ah, ok.
[18:24:24] <Jymmm> I don't use screen enough to be sure about that, but putty does have a long scrollback if you set it up correctly.
[18:24:47] <A-L-P-H-A> yes, putty I can scroll up.
[18:24:56] <Jymmm> But I would suspect that is a setting of screen moreso than putty.
[18:25:02] <A-L-P-H-A> I'm trying to reget the data that is from the server's history, not putty's
[18:25:10] <Jymmm> putty doens't keep scrollback once disconnected.
[18:25:19] <A-L-P-H-A> thanks Jymmm. :)
[18:25:47] <Jymmm> check manpage to see if screen has a cache setting
[18:26:21] <Jymmm> there has to be some command that screen can send to putty to say "Hey there's scroll back here if you need it"
[18:26:45] <Jymmm> just as if you had cat a log file
[18:27:08] <Jymmm> That may not be a bad idea.... do that first and see if your succesful
[18:27:32] <Jymmm> if so, then it's ircii
[18:27:46] <Jymmm> at least it'll narrow down where the problem is.
[18:31:07] <SWPadnos> SWPadnos is now known as SWP_Away
[19:12:28] <narnia> anyone here happen to know c++ rather well?
[19:13:40] <narnia> i need some help bringing the nist step class library up to date. i have most of it done. the problem now is with strstream.
[19:57:05] <Jymmm> robin_sz ya old dog, how the hell are ya!
[20:04:33] <robin_sz> just fine
[20:05:15] <robin_sz> todays fun was trying to ride the motorbike over a freshly ploughed field
[20:05:34] <Jymmm> I hope it was not a street bike
[20:05:38] <robin_sz> hell no
[20:05:42] <Jymmm> lol
[20:06:02] <Jymmm> then whats the problem? That's what hoses are for =)
[20:06:15] <Jymmm> and high-pressure nozzles
[20:06:25] <robin_sz> well, it was fun, but we ket falling off
[20:06:30] <robin_sz> kept
[20:06:33] <Jymmm> oh, ouch
[20:06:50] <robin_sz> nah, going slow
[20:06:53] <Jymmm> robin_sz hint.... the right lever is the BRAKE =)
[20:06:59] <robin_sz> had the three kids on too
[20:07:08] <Jymmm> three! rotf
[20:07:14] <Jymmm> at the same time?
[20:07:19] <robin_sz> sure
[20:07:31] <Jymmm> Oh man, I'd love to have shot that!
[20:07:42] <Jymmm> Have 300mm lens, will travel!
[20:08:24] <robin_sz> the trick is, never to use the brakes, they just make you crash
[20:09:13] <Jymmm> well, rear break is a good thing - helps prevent the rear end from sliding out on ya. But I guess you have to have something for the rear tire to have traction on too =)
[20:09:38] <robin_sz> well, I never found a use for the rear brake
[20:09:56] <Jymmm> I've only ridden street, and it helps big time
[20:10:09] <robin_sz> really? for what?
[20:10:30] <gezr> howdy yall
[20:10:41] <robin_sz> I use occasionally in the wet I guess
[20:10:45] <Jymmm> prevent the rear end from sliding out on ya, like on wet or loose gravel pavment
[20:10:55] <robin_sz> but in the dry, I never touch it
[20:10:58] <Jymmm> or fucking anti-freeze
[20:11:11] <Jymmm> thats worse than oil
[20:11:18] <robin_sz> yep
[20:11:31] <robin_sz> thats why race bikes run plain water
[20:12:23] <anonimasu> :)
[20:12:27] <Jymmm> I dun know, bike + radiator just doens't seem right for some reason.
[20:12:35] <anonimasu> hm..
[20:12:38] <anonimasu> why not?
[20:12:39] <robin_sz> shrug
[20:12:49] <robin_sz> only way to get the heat out
[20:12:51] <anonimasu> watercooled is way better then aircooled..
[20:13:11] <Jymmm> anonimasu eh, it's just an old-skool thing is all =)
[20:13:14] <anonimasu> :)
[20:13:19] <anonimasu> yeah
[20:13:35] <robin_sz> aircooled is OK for low performance things
[20:14:06] <anonimasu> yep..
[20:14:26] <robin_sz> air-oil was a interesting thing too
[20:14:27] <anonimasu> * anonimasu is more interested in the high performance..
[20:14:37] <Jymmm> never heard of air-oil
[20:14:45] <gezr> its what bmw uses
[20:14:52] <robin_sz> early Suziki GSXR's
[20:15:03] <Jymmm> I had a GS450 years ago
[20:15:07] <robin_sz> my GSXR 1100 was air/oil
[20:15:17] <gezr> others used it too,
[20:15:21] <robin_sz> yeah
[20:15:35] <Jymmm> Heh, the oil thing I think of when I hear air+oil is EPS =)
[20:15:35] <anonimasu> most cars do that to keep the engine oil cool..
[20:16:00] <anonimasu> but they got water channels also..
[20:16:12] <Jymmm> Heh, the only thing I think of when I hear air+oil is EPS =)
[20:16:29] <robin_sz> most bikes use the viscosity of the oil to operate a pressure relief valve, the releif valve splits which goes back to the pump striaght, which goes through the radiator
[20:16:33] <anonimasu> eps?
[20:16:38] <robin_sz> instant thermostat :)
[20:16:41] <anonimasu> :)
[20:16:55] <Jymmm> EPS == Expanded polystyrene == Styrafoam == whipped oil
[20:17:01] <robin_sz> of course, some idiot will use a non-specified oil and overheat it ...
[20:17:20] <anonimasu> lol
[20:17:20] <anonimasu> :)
[20:17:31] <anonimasu> * anonimasu love full synthetic oil in cars on the winter..
[20:17:38] <robin_sz> it was fun the GSXR ...
[20:17:53] <robin_sz> fairly powerful but a chassis that flexed too much
[20:18:15] <robin_sz> quite easy to get it slapping and flapping
[20:18:57] <robin_sz> but it did monowheel nicely, especially two-up. I dont think my wife appreciated that ;)
[20:19:03] <anonimasu> lol
[20:21:13] <robin_sz> I got a RGV250 racer after that, now, that bike handled! ... what a chassis. totally solid. totally predictable. useless as a roadbik I expect, but as a race bike it was great.
[20:21:50] <robin_sz> * robin_sz quite reminiscing baout bikes
[20:24:54] <robin_sz> sigh .. I'm gettingbored waiting for the next G200X software release ... its been .. weeks.
[20:25:06] <anonimasu> *jealous*
[20:25:07] <gezr> isnt it gpl?
[20:25:08] <anonimasu> I need a bike..
[20:25:09] <anonimasu> :)
[20:25:14] <robin_sz> ages and ages. release early release often
[20:25:19] <robin_sz> yeah its GPL
[20:25:26] <gezr> I should call up max and order more bike parts
[20:25:43] <robin_sz> but Steve is way ahead .. pointless doing much until he commits a release
[20:25:45] <gezr> ive been trying to decide what to do with my money, so I havent done any work at all
[20:26:04] <gezr> robin_sz : thats probably a good place to be in ya know
[20:26:16] <robin_sz> well, yeah
[20:26:22] <robin_sz> I just wish hed release
[20:26:29] <gezr> he will
[20:26:36] <gezr> when he knows its time :)
[20:26:48] <robin_sz> he does the "I have just a couple more things to fix" ...
[20:26:56] <gezr> I have a I think too much on my plate again, and ive become stagnate again
[20:27:09] <robin_sz> but like I care .. I'll take something incomplete and work on that
[20:27:56] <gezr> I keep thinking there is going to be a dac card soon thats really inexpensive or something come along
[20:28:17] <robin_sz> the G200X has DAC and ADC ;)
[20:28:19] <gezr> oh spat, icecream truck is going by just now, I should go get a bombpop
[20:28:34] <gezr> robin_sz : does it have feedback to computer?
[20:28:55] <robin_sz> of course,
[20:29:02] <gezr> cool
[20:29:10] <robin_sz> or put the PID system on the G200X
[20:29:52] <robin_sz> its close to ANSI C, stuff seems to port easily enough
[20:33:31] <robin_sz> anyone identify this card?
[20:33:34] <robin_sz> http://www.plasma-profiling.com/acatalog/Multi-axisPciMotionControlCard2200x127.jpg
[20:35:13] <robin_sz> 4 axis step or servo
[20:35:18] <robin_sz> 16 IO
[20:35:30] <robin_sz> circular, helical and linear interp
[20:35:37] <robin_sz> Galil?
[20:38:59] <Jymmm> robin_sz: could ya have a smaller pic by chance?!
[20:51:14] <robin_sz> bugger. my rack of servers seems to be uncontactable
[20:51:31] <nevyn> that's umm not good.
[20:51:42] <robin_sz> sigh
[20:54:14] <robin_sz> oh well, it seems to be the whole datacentre .. probably just some idiot with a digger found the cable.
[21:00:26] <A-L-P-H-A> who's an AVR ASM guru? http://lloydleung.com/gallery/Electronics/Digital_Tachometer/Tachometer%202.png anyone want to comment on the logic?
[21:00:34] <A-L-P-H-A> worked on that all morning.
[21:01:58] <newbie_> Goodevening
[21:03:09] <gezr> les !
[21:03:33] <les> hi gezr
[21:04:40] <EinarS> Ahh. That looks better than "Newbie" :-)
[21:06:29] <EinarS> Ringgg...Ringgg...
[21:06:38] <robin_sz> ello
[21:07:03] <EinarS> Hi Robin. Tnx for replying. Just installed. Now I know it works.
[21:08:04] <robin_sz> np
[21:09:23] <A-L-P-H-A> hey aj
[21:09:29] <A-L-P-H-A> wanna check something for me please?
[21:09:31] <alex_joni> hey
[21:09:34] <alex_joni> sure
[21:09:42] <A-L-P-H-A> http://lloydleung.com/gallery/Electronics/Digital_Tachometer/Tachometer%202.png want to comment on the logic?
[21:09:58] <alex_joni> opening now
[21:10:01] <A-L-P-H-A> thanks.
[21:10:15] <A-L-P-H-A> brb... gonna grab a beer.
[21:11:11] <A-L-P-H-A> back
[21:11:34] <A-L-P-H-A> the test conditions maybe not be correct, the you should understand what it's trying to do.
[21:12:24] <alex_joni> I don't really get why you used 2 timers
[21:12:29] <alex_joni> but.. I have an excuse
[21:12:37] <A-L-P-H-A> the two times.
[21:12:38] <robin_sz> I dont really understand why you didnt just buy a tacho ;)
[21:12:43] <alex_joni> it's almost midnight.. and I'm pretty tired :)
[21:12:52] <alex_joni> hey robin
[21:12:58] <A-L-P-H-A> so if the RPM is like 25,000 rpm, it's not oging to try to update the LCd that many times in one minute.
[21:13:09] <alex_joni> alpha... ok
[21:13:20] <robin_sz> next, build a dynamometer ;)
[21:13:28] <alex_joni> sounds kinda ok.. I would do it simpler
[21:13:35] <A-L-P-H-A> alex_joni, how?
[21:13:41] <A-L-P-H-A> that's already pretty simple...
[21:13:54] <alex_joni> take your update time
[21:13:57] <alex_joni> make it fixed
[21:13:59] <robin_sz> hmmm
[21:14:01] <alex_joni> say 1/second
[21:14:08] <alex_joni> count the ticks
[21:14:10] <alex_joni> and display
[21:14:18] <A-L-P-H-A> robin_sz, can an off the self one do RS232? TTL? and have a nice blue glass Green LCD screen?
[21:14:24] <alex_joni> one while, use the timers as counters
[21:14:33] <A-L-P-H-A> alex_joni, that's what the thing does.
[21:15:03] <A-L-P-H-A> TimerOverFlow0: Reach say 1/sec display, then the mainloop goes and displays something.
[21:15:14] <A-L-P-H-A> I was told to not try and do too much within interrupts.
[21:15:18] <alex_joni> where's Interrupt 1 ?
[21:15:42] <robin_sz> A-L-P-H-A: ive never needed to do any of those with a tacho ... always been too busy hanging on to the handlebars :)
[21:15:45] <A-L-P-H-A> Intterupt1? not used. I'm using Interrupt 0.
[21:16:03] <alex_joni> then what's Timeroverflow1 ?
[21:16:06] <robin_sz> and I have a VFD on my lathe
[21:16:12] <A-L-P-H-A> robin_sz, I don't touch the handle bars, unless I'm doing stuff manually.
[21:16:40] <robin_sz> doesnt your VFD give rpm?
[21:16:50] <A-L-P-H-A> robin_sz, that's the next project... as well as a PWM DC servo speed controller.
[21:17:08] <A-L-P-H-A> I don't have a VFD (isn't that for AC?)
[21:17:15] <alex_joni> alpha: what's TimerOverFlow1 ?
[21:17:21] <A-L-P-H-A> we went through this yesterday didn't we?
[21:17:27] <anonimasu> hm, who posted the IBM screen here?
[21:17:42] <anonimasu> the one that requred multiple DVI outs
[21:17:44] <alex_joni> hello anders
[21:18:03] <A-L-P-H-A> aj, TimerOverFlow1? that's the counter... TC1 (timerclock1) is only 16 bit... I need a 32 bit value.
[21:18:35] <alex_joni> I was wondering why you need 2 overflows
[21:18:44] <alex_joni> TimerOerflow0 & 1
[21:18:47] <alex_joni> over
[21:18:48] <A-L-P-H-A> TC1 is actually the clock cycles between Revolutions.
[21:18:55] <anonimasu> hey alex
[21:18:56] <anonimasu> :)
[21:19:02] <A-L-P-H-A> TC0 is use to display the result to the LCD.
[21:19:25] <alex_joni> I see what it's used for
[21:20:34] <alex_joni> so .. lemme get this straight
[21:20:38] <alex_joni> you have an int0
[21:20:44] <alex_joni> that's external interrupt
[21:20:48] <A-L-P-H-A> yup
[21:20:55] <alex_joni> generated by a tick (e.g. revolution on the drive)
[21:20:59] <A-L-P-H-A> yup
[21:21:28] <alex_joni> and you count (timer0) the counts between ticks
[21:21:39] <A-L-P-H-A> No.
[21:21:46] <A-L-P-H-A> I count Timer1 between ticks.
[21:21:56] <alex_joni> ahh.. right
[21:21:58] <alex_joni> timer1
[21:22:14] <A-L-P-H-A> Timer0 is just an overflow... so when it overflows, it allows for the display to be updated.
[21:22:20] <A-L-P-H-A> Timer0 controls the refresh of the LCd.
[21:22:21] <A-L-P-H-A> LCD
[21:22:26] <alex_joni> so you do use 2 timers
[21:22:34] <alex_joni> that's what I asked all along
[21:22:45] <alex_joni> one for display
[21:22:52] <alex_joni> one for counting the time between ticks
[21:22:56] <A-L-P-H-A> yes
[21:23:07] <alex_joni> looks ok to me
[21:23:10] <alex_joni> although...
[21:23:26] <alex_joni> I wouldn't use such a mix in a logic
[21:23:39] <alex_joni> asm & logic .. not very pretty :)
[21:23:53] <alex_joni> either stick with pseudocode... or stick with asm
[21:24:01] <alex_joni> * alex_joni prefers pseudocode for such a task
[21:24:03] <A-L-P-H-A> but this is psuedoASM. :)
[21:25:00] <alex_joni> rjmp is not pseudo ;)
[21:25:11] <alex_joni> jump is pseudo
[21:25:14] <Einar> Why not use a bicycle computer?
[21:25:32] <A-L-P-H-A> Einar, can an bicylcle computer do 25K rpm?
[21:25:47] <alex_joni> hmmm... fast bicycle :))
[21:26:08] <Einar> Dunno. Do you need that high. Then put a prescaler in front of it..
[21:26:25] <alex_joni> yeah.. a counter :D
[21:26:32] <A-L-P-H-A> I could just imagine the tire exploding do to the spinning force... imagine being implailed by hot rubber...
[21:26:49] <alex_joni> 25k rpm...
[21:27:09] <A-L-P-H-A> Einar, the timer is already prescaled at clockcyles / 64.
[21:27:24] <A-L-P-H-A> otherwise I'd need a 40bit value.
[21:27:28] <alex_joni> 60 cm wheel = ~188 cm / turn
[21:28:01] <alex_joni> 25000*1,9 m = 47500 m/min
[21:28:09] <Einar> Then set one timer to 4/100sec. Count up the pulses on another in the interval and present?
[21:28:29] <A-L-P-H-A> 47.5km/min... 2850 km/sec. That's pretty fast.
[21:28:37] <alex_joni> = 2850 kmh
[21:28:50] <alex_joni> sounds doable
[21:28:50] <A-L-P-H-A> Einar, but then I can't scale that back down to like 1-120rpm...
[21:29:01] <A-L-P-H-A> alex_joni, if you're in the space shuttle. yeah.
[21:29:18] <Einar> You want one spindle to cover 0-25K RPM?!?!
[21:29:31] <A-L-P-H-A> Einar. no... but the tacho to yes.
[21:29:47] <alex_joni> that's what? mach 3 ?
[21:29:50] <Einar> What torque will you get at low RPM?
[21:30:10] <A-L-P-H-A> Einar, different machine.
[21:30:30] <Einar> I have a spindle doing 60K RPM, but below 30K it can just turn, not cut!!
[21:30:43] <A-L-P-H-A> I can use this one the highspeed spindle on my lathe... and then on my mill, and then on my lathe headstock as well.
[21:30:48] <alex_joni> slightly slower than mach 3 (3380 kmh is mach 3)
[21:31:18] <A-L-P-H-A> 2850 km/h
[21:31:25] <alex_joni> A-L-P-H-A: if a mini can do it.. a bike might too
[21:31:26] <alex_joni> http://news.bbc.co.uk/2/hi/americas/3613715.stm
[21:31:59] <A-L-P-H-A> buahhahahaha
[21:32:02] <A-L-P-H-A> that's awesome!
[21:32:13] <A-L-P-H-A> I want whatever was done to that mini.
[21:32:29] <Einar> You can have a high resolution at any speed, but then the update interval will be low.
[21:32:30] <alex_joni> ain't google a doll...
[21:32:43] <A-L-P-H-A> Einar... are you pfred1?
[21:33:18] <Einar> Am I what!!! I had a glass of wine...but still OK!
[21:33:30] <alex_joni> * alex_joni thought pfred was from the us
[21:33:36] <alex_joni> lol
[21:33:41] <A-L-P-H-A> aj, probably.
[21:33:46] <alex_joni> got you there :)
[21:34:15] <alex_joni> Einar: pfred1 is a guy that hanged aroung here
[21:34:36] <alex_joni> einar sounds scandinavian... right?
[21:34:50] <Einar> Ahhh.. No I'm Einar Sjaavik. On most places "ESjaavik"
[21:35:11] <Einar> I'm Norwegian, so you're right.
[21:35:16] <alex_joni> * alex_joni prods paul_c
[21:35:19] <Jymmm> alex_joni: pfred isn't even from EARTH much less US =)
[21:35:34] <alex_joni> Jymmm: don't wanna argue bout that
[21:35:41] <Jymmm> alex_joni lol
[21:35:43] <alex_joni> Einar: glad to have you around
[21:36:28] <Einar> Just got EMC4.20 installed on this box. And I can use it for IRC, not controlling my mill. :-(
[21:36:40] <alex_joni> why not?
[21:36:44] <alex_joni> any problems?
[21:36:50] <alex_joni> maybe we could help?
[21:36:52] <A-L-P-H-A> aj, 'ight so I've got the seal of approval from two people... I should start coding it now... [horray for reusable bits of code]
[21:37:17] <Einar> I want to use Jon Elson's USB. Got help from him to pass some hurdles, but not all yet.
[21:37:31] <alex_joni> USB?
[21:37:39] <alex_joni> wasn't aware of that
[21:37:49] <Einar> Universal Stepper Board.
[21:37:54] <alex_joni> ahhh
[21:38:02] <alex_joni> right... ppmc ?
[21:38:40] <Einar> I got some things going, but now I can't get out of Estop. (Heard that before?).
[21:38:59] <alex_joni> a lot :)
[21:39:19] <alex_joni> checked the ini file?
[21:39:32] <alex_joni> what display do you use ? tkEmc ?
[21:39:38] <Jymmm> Jymmm is now known as Red70sShow
[21:39:38] <Red70sShow> Red70sShow is now known as Jymmm
[21:39:40] <Einar> I tried Bridgeporttask. Actually did not expect it to work. And I was right.
[21:39:47] <alex_joni> right
[21:42:26] <Einar> Wanted to check my .ini, but the editor bobs out! Sh** probably because I installed IRC!?"#
[21:42:43] <alex_joni> nah...
[21:42:46] <alex_joni> use another one
[21:42:52] <Einar> =bombs. (I type with a fying pan!)
[21:42:52] <alex_joni> you should have a load installed
[21:43:09] <alex_joni> try .. vi, vim, emacs, mc, less, cat
[21:43:27] <A-L-P-H-A> nano!
[21:43:28] <A-L-P-H-A> joe!
[21:43:33] <alex_joni> yeah
[21:43:35] <Jymmm> EDLIN
[21:43:38] <A-L-P-H-A> I like nano a lot.
[21:43:40] <alex_joni> and a BUNCH of others
[21:43:45] <alex_joni> I like mc
[21:43:51] <alex_joni> hat emacs
[21:43:54] <Jymmm> actually I really like mcedit
[21:44:01] <alex_joni> don't argue with vi :D
[21:44:06] <Jymmm> but I'm used to edit
[21:44:10] <A-L-P-H-A> nano is just easy... last two lines are displayed are displayed as to what what commands are
[21:44:34] <gezr> http://www.kolumbus.fi/cadoras/shobary/Ennio_Morricone_-_For_A_Few_Dollars_More.mp3
[21:44:52] <Einar> Well Kedit works.. DISPLAY = tkemc.
[21:45:00] <robin_sz> vi ... the one true way
[21:45:00] <A-L-P-H-A> gedit if you're in gnome. :D
[21:45:06] <robin_sz> I use gedit
[21:45:10] <robin_sz> its OK
[21:45:13] <A-L-P-H-A> robin_sz... only if you're an uber linux geek.
[21:45:15] <robin_sz> and on windows ..
[21:45:17] <alex_joni> robin: got problems on redpint?
[21:45:18] <robin_sz> it has to be pfe
[21:45:20] <alex_joni> point
[21:45:25] <alex_joni> or is it just me?
[21:45:26] <A-L-P-H-A> vi is evil.
[21:45:29] <A-L-P-H-A> :q!
[21:45:31] <robin_sz> alex_joni: yeah, lost connectivity at the datacentre
[21:45:32] <Einar> HELP!! I started an editor war!!
[21:45:39] <alex_joni> bummer
[21:45:39] <A-L-P-H-A> you have to make smily faces to quit the damn program!
[21:45:48] <gezr> vi
[21:45:48] <alex_joni> alpha: lol
[21:45:51] <alex_joni> :)
[21:45:53] <robin_sz> esc:wq
[21:46:03] <alex_joni> esc:wtf
[21:46:06] <alex_joni> lolol
[21:46:08] <Jymmm> lol
[21:46:22] <Jymmm> esc:wq is the ONLY vi command I know
[21:46:23] <A-L-P-H-A> so esc is how I get the menu.
[21:46:27] <gezr> there is a syntax highliter for cnc with vi :)
[21:46:41] <nevyn> hrm.
[21:46:42] <A-L-P-H-A> sweet... poker game tonight at 8:30. :D
[21:46:43] <alex_joni> ok.. enough abou teditors
[21:46:45] <A-L-P-H-A> time to will some money!
[21:46:55] <alex_joni> * alex_joni and Einar were talking about a faulty emc
[21:46:56] <robin_sz> Jymmm: heres two for you ... esc:q! (just get me outta here)
[21:46:57] <gezr> and to learn how to use the vim, just type in vimtutor
[21:47:13] <nevyn> this channel is in the first stages of a successful project. still fighting about editors.
[21:47:16] <Jymmm> robin_sz tyvm =)
[21:47:29] <alex_joni> Einar: does it say anything about hardware limits?
[21:47:40] <Einar> Uhh?
[21:47:54] <robin_sz> Jymmm: and more usefully .. /someword finds "someword", pressing "n" moves on to the next one
[21:47:56] <alex_joni> during startup
[21:48:01] <Jymmm> robin_sz: Hey, is there a vi command simular to ESC:emc so we can say "were on topic" ?
[21:48:05] <alex_joni> you start emc by pressing a button?
[21:48:11] <alex_joni> or by running it from a shell?
[21:48:16] <Einar> From Shell
[21:48:19] <robin_sz> Jymmm: there is no "on topic"
[21:48:32] <gezr> nevyn : hehehe, I dont know if I was fighting :)
[21:48:34] <alex_joni> ok.. do you see the output from emc (in the shell)?
[21:48:50] <Jymmm> robin_sz: yesterday the disc was about physics, so we got E=MC2 (back on topic =)
[21:49:03] <CIA-4> 03paul_c 07BDI build system * 10Babylon Cluster/qemccommand.cc: File changed. New revision:qemccommand.hh
[21:49:05] <alex_joni> nevyn: I thought it was in the later stages of a succesfull project :)
[21:49:10] <gezr> emc2 needs lots of ram
[21:49:14] <gezr> paul_c : are you present?
[21:49:20] <alex_joni> gezr: no it doesn't
[21:49:24] <Jymmm> gezr awol
[21:49:28] <Einar> I had to comment out this: ; EMCIO = ppmcio
[21:49:37] <alex_joni> Einar: right
[21:49:44] <alex_joni> and comment the default one
[21:49:56] <Einar> Probably that is the problem.. it cannot read the Estop switch.
[21:50:05] <gezr> alex_joni : well I havent completely narrowed it down to just MEM but if I dont have enough free, my system reboots on emc start
[21:50:44] <nevyn> I think this is the only channel I'm on that regularly has editor wars.
[21:51:02] <alex_joni> gezr: sounds creepy
[21:51:03] <Einar> I got a message it could not load the ppmcio.
[21:51:06] <robin_sz> yeah, thats only because we are nice on here
[21:51:07] <alex_joni> what system?
[21:51:16] <alex_joni> Einar: might not be there?
[21:51:28] <gezr> alex_joni : its really strange, amd k6/2 300.. 128m of ram
[21:51:28] <robin_sz> do you actually have a ppmc card?
[21:51:31] <alex_joni> would definately be a reason why you can't get out of estop
[21:51:45] <Einar> No. It's not. This is EMC BDI 4.20
[21:52:02] <Einar> I have a ppmc card.
[21:52:42] <alex_joni> either the executable is not found
[21:52:55] <alex_joni> or it runs and doesn't register with the board properly
[21:52:59] <alex_joni> or another reson
[21:53:00] <alex_joni> :D
[21:53:06] <alex_joni> reason that is
[21:53:24] <alex_joni> * alex_joni looks at the BDI-4 code
[21:53:26] <Einar> After some help from Jon Elson, I could use the univstepmod. I had to force the Parport to EPP.
[21:54:13] <robin_sz> I think Jon worked hard on that board, and it works well from what I hear.
[21:54:23] <Einar> But I cannot find any ppmcio code at all.
[21:54:48] <Jymmm> http://www.evmes.org/
[21:54:52] <Einar> I have only good things to say about Jon!
[21:55:44] <alex_joni> I think we all do
[21:55:49] <Einar> But I don't know if he can help missing code. From the list I understand he does not run 4.20 himself.
[21:57:58] <Jymmm> Aw shit... SHA-1 has been broken
[21:58:07] <robin_sz> oops.
[21:58:12] <alex_joni> Einar: what does EMCMOT read?
[21:58:14] <robin_sz> is that a problem?
[21:58:21] <alex_joni> SHA-1?
[21:58:23] <Jymmm> robin_sz BIG problem
[21:58:25] <alex_joni> since when?
[21:58:26] <robin_sz> encryoption routine
[21:58:33] <A-L-P-H-A> aj, slashdot.
[21:58:36] <robin_sz> used by .. lots of things ..
[21:58:40] <alex_joni> I kinda know what SHA is
[21:58:52] <Jymmm> It's a hash alogrythym
[21:59:13] <robin_sz> Jymmm: broken as in "found a hole" or broken as in "bruteforced by 3million pcs in 2 years"?
[21:59:17] <A-L-P-H-A> http://it.slashdot.org/article.pl?sid=05/02/19/1424201&tid=93&tid=172&tid=218
[21:59:33] <Jymmm> SHA-1 has been broken. Not a reduced-round version. Not a simplified
[21:59:33] <Jymmm> version. The real thing.
[21:59:43] <Jymmm> This attack builds on previous attacks on SHA-0 and SHA-1, and is a
[21:59:43] <Jymmm> major, major cryptanalytic result: the first attack faster than
[21:59:43] <Jymmm> brute-force against SHA-1.
[21:59:53] <Einar> EMCMOT = univstepmod
[22:00:06] <alex_joni> Einar: ok...
[22:00:22] <robin_sz> Einar: url on /. ?
[22:01:04] <Einar> @Robin: What do you mean?
[22:01:17] <alex_joni> slashdot
[22:01:31] <alex_joni> robin: wasn't einar who started on sha-1
[22:01:37] <alex_joni> was Jymmm
[22:01:39] <Jymmm> robin_szL you want the REAL details?
[22:01:58] <robin_sz> Jymmm: just a url
[22:01:58] <alex_joni> "Using a modified DES Cracker, for the small sum of up to $38M, SHA-1 can be broken in 56 hours, with current computing power."
[22:02:07] <alex_joni> http://it.slashdot.org/article.pl?sid=05/02/19/1424201&tid=93&tid=172&tid=218
[22:02:45] <alex_joni> Einar: what did you use for EMCIO ?
[22:03:29] <Einar> EMCIO = bridgeportio
[22:04:14] <alex_joni> that can't work afaik
[22:04:31] <alex_joni> do you have 2 parports on this machine?
[22:05:32] <Jymmm> robin_sz: http://theory.csail.mit.edu/~yiqun/shanote.pdf
[22:05:36] <Einar> No. The board is handled through 1 parport.
[22:05:56] <alex_joni> I know that... but bridgeporio assumes 2 parports
[22:06:20] <alex_joni> 1 for stepper command, and the second for io.. so it doesn't feel like the thing you'd wanna use
[22:06:26] <alex_joni> try simio
[22:06:29] <alex_joni> and see if it runs
[22:06:39] <Einar> I just changed it to bridgeportio 'cause then it does not crap out during startup.
[22:07:42] <Einar> "The file plat/nonrealtime/bin/simio does not exist or is not executable."
[22:08:43] <alex_joni> bummer :)
[22:09:04] <alex_joni> check plat/nonrealtime/bin/ for files
[22:09:09] <alex_joni> what is listed there?
[22:10:07] <alex_joni> do you have build tools installed?
[22:10:13] <alex_joni> gcc & such?
[22:10:40] <paul_c> No simio, no ppmcio, just minimillio & bridgeportio
[22:10:56] <Einar> What do I look for? I don't know how to copy the listing here.
[22:11:16] <alex_joni> nevermind ;)
[22:11:20] <paul_c> I can see you don't have simio or ppmcio
[22:11:20] <alex_joni> paul_c just got back
[22:11:21] <Jymmm> paul_c when you get a moment
[22:11:42] <alex_joni> paul_c: Einar is trying to get bdi-4.20 to run with a USB
[22:11:48] <alex_joni> ppmc board
[22:11:59] <paul_c> ppmc is not USB
[22:12:06] <alex_joni> Jon advised him to use univstepmod
[22:12:12] <Einar> bridgeportio, dumbio, minimillio are the ones ending in "io".
[22:12:52] <Einar> He did not directly. It was from the .ini file on his website.
[22:13:19] <alex_joni> right
[22:13:20] <Einar> And after running pcisetup, it does not crap out anymore.
[22:13:35] <Einar> (At that pont)
[22:13:39] <A-L-P-H-A> what about jiggilo? (almost io)
[22:13:52] <Einar> Huhh?
[22:13:56] <A-L-P-H-A> well... could spell as jiggilio.
[22:14:06] <A-L-P-H-A> nm... I'm just being silly.
[22:14:14] <A-L-P-H-A> jiggilo is a male prostitute.
[22:14:14] <Einar> Tnx!
[22:14:43] <A-L-P-H-A> np
[22:14:46] <alex_joni> ALPHA: that's gigolo
[22:14:52] <A-L-P-H-A> fine.
[22:14:56] <A-L-P-H-A> gigolio. :)
[22:15:01] <A-L-P-H-A> heh
[22:15:27] <alex_joni> paul_c: any thoughts on advising Einar?
[22:15:44] <A-L-P-H-A_laptop> I don't see paul_c as being active
[22:15:49] <A-L-P-H-A_laptop> oh yes he is.
[22:15:49] <A-L-P-H-A_laptop> nm
[22:16:24] <paul_c> Einar: You culd try asking Jon why he is scared of using cvs
[22:16:31] <Einar> Am I right that univstepmod is the motion output, and xxxxio is the switches?
[22:16:48] <paul_c> yes
[22:16:59] <A-L-P-H-A_laptop> paul_c, have you thought aobut switching to subversion?
[22:17:32] <paul_c> svn is not an option with SF
[22:17:35] <Einar> I would not be the right guy to ask him! I get the creeps from just putting a Lnux CD in the cupholder!
[22:17:41] <alex_joni> does SF support subversion?
[22:18:10] <paul_c> alex_joni: nope.
[22:18:56] <alex_joni> well then.. subversion failed
[22:19:46] <robin_sz> subversion is good though
[22:19:57] <alex_joni> I agree.. but not in this case
[22:20:20] <robin_sz> well, ever wonder why so many projects move off SF?
[22:20:29] <paul_c> * paul_c slaps alex_joni2 around with a small 50lb Unix Manual
[22:20:32] <paul_c> paul_c has kicked alex_joni2 from #emc
[22:21:00] <alex_joni> guess alex_joni2 didn't see that one coming
[22:21:30] <robin_sz> I used svn on a project a while back and liked it
[22:21:45] <robin_sz> but I guess cvs has more public momentum
[22:22:55] <alex_joni> hey jmk_away
[22:23:02] <Einar> I tried Dumbio. It does start the GUI, but there is no connection with the hardware Estop.
[22:23:03] <robin_sz> alex_joni: tried tortoise CVS on windows yet?
[22:23:07] <nevyn> arch.
[22:23:11] <nevyn> arch or baz are the bomb
[22:23:13] <Einar> (Did not really expect it to.)
[22:23:21] <Jymmm> Ok, whos' in Berlin??? http://www.ccc.de/hackabike/
[22:23:24] <alex_joni> robin: can't remember
[22:23:31] <alex_joni> I remember using wincvs
[22:23:36] <alex_joni> didn't really like it
[22:23:39] <robin_sz> alex_joni: tis good. very good.
[22:23:41] <alex_joni> shell version is better
[22:23:48] <Jymmm> paul_c does the bot have a factoid db ?
[22:23:52] <paul_c> Einar: use minimilltask & minimillio
[22:24:26] <robin_sz> to be honest, it works better in 'doze than cvs does on linux, which is a bit fscking annoying :(
[22:25:17] <jmk_away> hi alex
[22:25:34] <robin_sz> * robin_sz relaxes about SHA-1
[22:25:46] <nevyn> robin_sz: cvs? or something else?
[22:25:53] <nevyn> collisions?
[22:26:01] <robin_sz> nevyn: cvs, using Tortoise CVS on ;doze
[22:26:14] <alex_joni> robin: did you manage to use ssh cvs on doze?
[22:26:20] <robin_sz> yse
[22:26:31] <alex_joni> how?
[22:26:31] <robin_sz> with tortoise CVS ;)
[22:26:34] <alex_joni> lol
[22:26:38] <nevyn> apparently the emacs CVS integration is very nice.
[22:26:38] <robin_sz> try it
[22:26:44] <alex_joni> * alex_joni is getting tortoise
[22:27:10] <Einar> @Paul_c: Then I get the GUI. But it does not see the hardware Estop.
[22:28:30] <A-L-P-H-A_laptop> a tortoise?
[22:28:40] <A-L-P-H-A_laptop> a tutle?
[22:28:57] <Jymmm> http://www.tortoisecvs.org/
[22:29:19] <robin_sz> make CVS pleasant to use
[22:29:20] <A-L-P-H-A_laptop> is that a client?
[22:29:31] <paul_c> Einar: You'd probably be better off talking to SWP_Away when he isn't...
[22:30:22] <Einar> Who is SWP?
[22:30:50] <alex_joni> a guy ;)
[22:30:57] <alex_joni> stephen willie padnos iirc
[22:32:49] <Einar> OK. Do anyone here know if the univstepmod have been tested with 4.20? I got the impression it was.
[22:33:33] <Einar> What I mean is not just that driver, but the full setup with universal stepper board.
[22:34:03] <paul_c> who gave that impression ?
[22:34:54] <Einar> Good question. The info is quite well spread out! But i think it was from www.linuxcnc.org.
[22:35:13] <Einar> It may have been from the lists though.
[22:37:37] <Einar> As I'm not part of the "core team" gleaning info is not easy.
[22:40:28] <robin_sz> I REALLY hope this isnt a power failure at my co-lo ... one of my boxes had 1 year uptime just 2 days ago
[22:40:49] <alex_joni> how did you celebrate?
[22:41:05] <A-L-P-H-A_laptop> damn it! this car is cheaper than my current car! http://autonet.ca/Facilities/story.cfm?story=/Facilities/2005/03/17/964047.html
[22:41:07] <A-L-P-H-A_laptop> wth???
[22:41:08] <nevyn> sat in the server room and smoked a cigar? :-P
[22:43:29] <roel1> hi all
[22:43:35] <robin_sz> alex_joni: congratulatory emails to me and my co-admin from the box :)
[22:43:38] <alex_joni> hello
[22:43:44] <alex_joni> lol
[22:47:18] <alex_joni> damn...
[22:47:25] <alex_joni> we had 20 degs plus yesterday
[22:47:34] <alex_joni> now it dropped below 0
[22:47:41] <A-L-P-H-A> aj, same around here.
[22:48:15] <alex_joni> too big difference :)
[22:48:50] <Jymmm> 62 f and sun is shining
[22:49:18] <alex_joni> now I gotta do math :(
[22:49:28] <A-L-P-H-A> math is your friend.
[22:49:35] <Jymmm> paul_c!
[22:49:38] <alex_joni> why can't you people go with the rest of the world?
[22:49:43] <A-L-P-H-A> unless it's converting dirty yank units to metric
[22:50:00] <alex_joni> alpha: lol
[22:50:11] <Jymmm> paul_c you awake over there?
[22:50:25] <A-L-P-H-A> it's 11pm over where he is.
[22:50:32] <Jymmm> 16 c
[22:50:40] <A-L-P-H-A> maybe he's having a spoted dick.
[22:50:40] <paul_c> * paul_c throws a kipper @ Jymmm
[22:50:56] <alex_joni> Jymmm: thx
[22:51:02] <Jymmm> paul_c no thanks! Does the bot have a factoid db?
[22:51:07] <alex_joni> jmk_away: how's everything?
[22:51:20] <paul_c> Jymmm: what bot ?
[22:51:23] <jmk_away> buys
[22:51:25] <A-L-P-H-A> CIA-4
[22:51:27] <Jymmm> CIA-4
[22:51:27] <jmk_away> busy even
[22:51:34] <Jymmm> what A-L-P-H-A said
[22:51:42] <alex_joni> mk: know the feeling
[22:51:56] <alex_joni> jmk even ;)
[22:52:00] <Jymmm> paul_c CIA-4
[22:52:04] <jmk_away> going on another work trip this week, mon-thur
[22:52:14] <robin_sz> anywhere nice?
[22:52:17] <alex_joni> I was last week
[22:52:23] <jmk_away> nope
[22:52:23] <alex_joni> mon-wedn
[22:52:33] <alex_joni> err.. sun-wedn
[22:52:41] <jmk_away> a lab in milwaukee wisconsin...
[22:52:43] <alex_joni> that's why I missed last sundays meeting
[22:52:47] <paul_c> Jymmm: CIA-4 is just a cvs feed.
[22:52:49] <robin_sz> going to inspect an elephant-snot production facility?
[22:53:11] <alex_joni> what's a snot?
[22:53:12] <jmk_away> nope, a snot consumption facility
[22:53:18] <robin_sz> ahh :)
[22:53:25] <jmk_away> snot = the stuff that dribbles out of your nose
[22:53:35] <alex_joni> lol
[22:53:39] <Jymmm> paul_c I thought it monitored other thigns too?
[22:53:44] <robin_sz> alex_joni: break an IGBT open some time
[22:53:56] <jmk_away> gonna be helping the production folks test the first few drives
[22:54:06] <robin_sz> big ones?
[22:54:10] <alex_joni> robin: with a hammer?
[22:54:19] <alex_joni> or just current :)
[22:54:25] <jmk_away> 690V, 705A, three phase
[22:54:31] <alex_joni> nice
[22:54:32] <robin_sz> big enough
[22:54:55] <alex_joni> our robots will switch soon to 600V servos too
[22:55:09] <alex_joni> makes it easier/cheaper
[22:55:11] <robin_sz> if they start pulling 700A, worry.
[22:55:18] <alex_joni> only 380V rectified
[22:55:19] <jmk_away> why? you are only running a few kW
[22:55:47] <alex_joni> spares a power supply for them
[22:55:53] <alex_joni> and keeps the motors smaller
[22:55:59] <alex_joni> at the same torque
[22:56:01] <jmk_away> * jmk_away is confused...
[22:56:08] <alex_joni> thinner cables
[22:56:16] <alex_joni> why is that?
[22:56:43] <jmk_away> do you mean 600VAC motors?
[22:56:47] <robin_sz> many of the servo systems offer suprigly high voltages now
[22:56:59] <alex_joni> think so
[22:57:06] <robin_sz> more oomph from a smaller package, same cost
[22:57:08] <Jymmm> http://www.timesonline.co.uk/article/0,,2-1487674,00.html
[22:57:19] <alex_joni> don't know for sure.. I only know the servos will run on 600 VDC power
[22:57:51] <jmk_away> ok, 600V _DC_ is for 380V AC motors
[22:57:58] <alex_joni> right now they run on 200V (smaller axes) 300V (bigger ones)
[22:58:02] <jmk_away> probably using 1200V IGBTs
[22:58:24] <jmk_away> I was talking about 690V AC motors, using a 1000V DC supply and 1700V IGBTs
[22:58:36] <jmk_away> that would be overkill for anything less than about 100kW
[22:58:50] <alex_joni> I guess
[22:59:15] <jmk_away> 1200V IGBTs are cheaper and have lower losses than 1700V ones
[22:59:24] <alex_joni> big (or small to you) IGBT's remind me...
[22:59:38] <alex_joni> I had some broken 330A 600V IGBT's
[22:59:46] <alex_joni> can't find any replacement for them
[22:59:52] <jmk_away> broken? as in blown up I expect?
[22:59:58] <alex_joni> some older I'R
[23:00:08] <alex_joni> not blown up... but shortened out
[23:00:12] <jmk_away> you may be out of luck
[23:00:19] <alex_joni> I am ...
[23:00:29] <jmk_away> second sources are rare for those things
[23:00:31] <alex_joni> I did try a lot...
[23:00:53] <alex_joni> they were (are) part of some welding power source (inverter part)
[23:00:55] <jmk_away> what were they used for? motor drive? welder?
[23:00:59] <jmk_away> ;-)
[23:01:15] <alex_joni> 20kHz or smthg like that
[23:01:19] <alex_joni> maybe less
[23:01:23] <jmk_away> oooohhh, fast
[23:01:27] <alex_joni> yup
[23:01:48] <jmk_away> the 1700V ones we use need a 30% derate at 4KHz, and are pretty much worthless at higher speeds
[23:01:52] <jmk_away> best rating is at 2KHz
[23:02:07] <robin_sz> jmk_away: Baldor supply as standard 160, 300, 650 bus volts on AC servos
[23:02:16] <alex_joni> should be fast enough on big motors...!?
[23:02:31] <alex_joni> robin: sounds about right
[23:02:43] <jmk_away> 160 = rectified 120V, 300 ~= rectified 240V, and 650 = rectified 480V
[23:02:50] <jmk_away> standard US voltages
[23:03:12] <jmk_away> alex_joni: yeah, 2K is OK for big motors... 4K is quieter tho
[23:03:30] <alex_joni> and 600 ~= rectified 400V (EU voltage)
[23:03:48] <alex_joni> can you hear it whine at 2k ?
[23:04:02] <jmk_away> yeah - we consider 380, 400, 415 all to be european voltages
[23:04:13] <jmk_away> we use the same hardware for 380 thru 480V
[23:04:29] <alex_joni> right.. it's pretty close
[23:04:46] <jmk_away> can you hear it whine? more like "is there anywhere where I can hide to get away from that gawd-awful noise?"
[23:04:52] <alex_joni> usually it's even 400 +/- 20% (320-480)
[23:05:00] <alex_joni> jmk: lol
[23:05:09] <jmk_away> wow - we usually only do +/- 10%
[23:05:33] <alex_joni> +/- 20% on less "needy" equipment
[23:05:40] <alex_joni> 10% is standard though
[23:06:08] <alex_joni> but a welding source (outputting 40V still works on 320 )
[23:06:36] <alex_joni> I did some real pulse welding the other day
[23:06:42] <alex_joni> 60 amps base current
[23:06:47] <alex_joni> 600 amps pulses
[23:06:57] <robin_sz> 2K yikes
[23:06:58] <alex_joni> 1.9 msec pulse time
[23:07:07] <alex_joni> 380 Hz :)
[23:07:11] <robin_sz> feck
[23:07:22] <alex_joni> did sound great
[23:07:33] <alex_joni> imagine that times 2
[23:07:39] <robin_sz> the PSU my mate did with IGBTs
[23:07:51] <robin_sz> the competitor runs at 3khz
[23:07:58] <robin_sz> 6or 8u box
[23:08:04] <robin_sz> weighs 40kg
[23:08:12] <robin_sz> whistles like a kettle
[23:08:15] <alex_joni> so.. compact class :D
[23:08:26] <SWP_Away> SWP_Away is now known as SWPadnos
[23:08:29] <robin_sz> my friends runs at 20khz ...
[23:08:42] <alex_joni> I'm really looking forward for a system we're about to get
[23:08:43] <robin_sz> the ferrite is tine
[23:08:48] <Jymmm> robin_sz I hope you dont live in this area http://www.guardian.co.uk/online/story/0,3605,1410921,00.html
[23:08:48] <jmk_away> yeah, for a PSU where you provide the magnetics, it
[23:08:49] <robin_sz> tiny
[23:08:51] <jmk_away> oops
[23:09:07] <jmk_away> yeah, for a PSU where you provide the magnetics, it's a tradeoff of more IGBT losses vs more magnetics
[23:09:18] <alex_joni> I'll get a Tandem weldign system (2x 600 Amps power sources)
[23:09:28] <alex_joni> can do 2x1200 Amps pulses
[23:09:42] <jmk_away> but for a motor drive, we have this bloody great inductor with a shaft sticking out of it, so no reason to use high frequency except to reduce audible noise
[23:10:16] <jmk_away> smaller drives do run at higher frequency, 8K, 10K, 12K...
[23:10:22] <alex_joni> jmk: I did a drive once (for a DC motor), and ran it at <1kHz
[23:10:33] <jmk_away> but the losses in a 500KW or 1MW drive would be to high for that
[23:10:36] <alex_joni> a small DC motor (10 Amps 24V)
[23:10:54] <alex_joni> sounded like a berzerk stepper
[23:10:56] <robin_sz> yeah fair point
[23:11:06] <jmk_away> yeah, for DC you can use fairly low PWM freq
[23:11:15] <alex_joni> was only in error, I changed it to 10 kHz
[23:11:20] <jmk_away> for AC you need higher, 2K is about as low as you can get away with
[23:11:26] <robin_sz> the only reason for using 20K was to get the phyiscal size low
[23:11:40] <jmk_away> right
[23:11:45] <alex_joni> robin: and to get out of hearing range
[23:11:56] <alex_joni> 14k is pretty tough to hear
[23:11:58] <jmk_away> that was 10KW, right? so losses are managable
[23:12:04] <robin_sz> 14K is easy to hear
[23:12:14] <robin_sz> yeah 12K
[23:12:17] <alex_joni> well.. 20 is definately not
[23:12:27] <robin_sz> 20K is out of my range for sure
[23:12:31] <jmk_away> we have something like 15KW just in losses, per heatsink (and two heatsinks per drive, water cooled)
[23:12:32] <alex_joni> same here
[23:13:00] <alex_joni> I think I did a test once .. with a sine-generator
[23:13:04] <robin_sz> I can hear 15.625khz easy enough :)
[23:13:06] <alex_joni> connected to a speaker
[23:13:19] <alex_joni> got to 16khz or so
[23:13:28] <jmk_away> my hearing probably looks like a notch filter, with the notch at 4K ;-)
[23:13:33] <alex_joni> lol
[23:13:38] <robin_sz> mine was ok to 18k or so a few years ago,
[23:14:04] <alex_joni> ok guys...
[23:14:10] <alex_joni> * alex_joni is going to bed
[23:14:25] <alex_joni> talk to you later today
[23:14:33] <alex_joni> as it's already sunday here
[23:15:08] <jmk_away> goodnight
[23:15:28] <alex_joni> night
[23:15:36] <alex_joni> robin: tortoise looks great
[23:15:38] <robin_sz> night
[23:15:44] <robin_sz> alex_joni: good :)
[23:15:48] <alex_joni> laters
[23:15:51] <robin_sz> k
[23:17:06] <robin_sz> damn, having my mail server down means I'll miss a whole load of viagra offers ...
[23:18:54] <jmk_away> I'm sure you'll muddle by somehow
[23:19:34] <jmk_away> dumbasses.... metalexpress.net just haven't got this internet thing down yet
[23:19:45] <jmk_away> register online, they use a secure page
[23:20:11] <jmk_away> then they mail you the password you selected in an unencrypted email
[23:26:11] <Jymmm> robin_sz: Don't tell us, explain it to your lover!
[23:36:40] <robin_sz> jmk_away: a common lunacy amongst web things
[23:41:10] <jmk_away> hi ray
[23:43:10] <jmk_away> hmmm... no ray
[23:46:34] <paul_c> His mind is elsewhere...
[23:49:59] <rayh> Hi john.
[23:50:04] <jmk_away> hi ray
[23:50:26] <rayh> Just getting back to my stuff.
[23:50:35] <rayh> Still stuck here.
[23:51:01] <jmk_away> did you get my email from tuesday (about work travel)?
[23:51:37] <jmk_away> jmk_away is now known as jmkasunich
[23:58:12] <paul_c> jmkasunich: want to talk shop ?
[23:58:21] <jmkasunich> ok
[23:58:40] <paul_c> interp issues...
[23:59:55] <paul_c> who is going to commit Ken's mods, and where ?