#emc | Logs for 2005-08-05

[00:00:28] <Jacky^> I was asking to myself, how the script sort the files in the dir ? by date-time stamp ?
[00:01:32] <Jacky^> there's few doc about.. just a small readme :\
[00:01:52] <Jacky^> i will try ..
[00:04:36] <anonimasu> night
[00:04:52] <Jacky^> night anonimasu
[00:06:55] <Jymmm> ya know, I have some optical switches and wheels from a copy machine, I guess I could play around a bit.
[00:07:04] <Jymmm> with the midi port that is.
[00:07:26] <Jacky^> Jymmm: about ?
[00:07:30] <Jacky^> encoder ?
[00:07:47] <Jymmm> Jacky^ I was asking why noboy ever uses the game/midi port
[00:07:53] <websys> I thought midi ran at 9600 baud
[00:08:08] <Jacky^> Jymmm: bah...
[00:08:24] <Jacky^> no idea.. but it don't seem to me so good
[00:08:37] <websys> fast enough for keyboards but not real time control
[00:08:39] <Jacky^> I bought 3 isa parport for 10 euro ..
[00:09:08] <Jymmm> websys well, how fast is needed, and how slow is game port?
[00:10:08] <websys> midi is a serial device - parports are much faster
[00:10:32] <websys> USB is a different story
[00:10:47] <Jymmm> but we are talking a encoder here, how fast does it need to be?
[00:10:58] <Jymmm> USB is PITA (polling)
[00:11:06] <websys> How fast do you want to run your machine
[00:11:25] <Jymmm> I'm serious... how fast does it need to be at a minimum?
[00:13:06] <websys> depends on pulses/unit * max. velocity
[00:14:22] <Jymmm> would a 74LS374 be fast enough?
[00:15:21] <websys> haven't worked with chips in a long time - sorry
[00:15:57] <Jymmm> I'm in the mindset of a old fashioned mouse here...
[00:16:15] <Jymmm> an 'encoder' seems fairly striaght forward from that perspective.
[00:17:19] <websys> a mouse never generates a fraction of the pulses an NC machine would
[00:17:43] <paul_c> ~100dpi...
[00:17:53] <paul_c> on a good day.
[00:17:57] <Jymmm> mine can go up to 300cpi
[00:18:00] <Jymmm> dpi
[00:18:00] <websys> quick hand
[00:18:07] <Jymmm> some ive seen do 1200
[00:19:15] <paul_c> Jacky^: Would appear that scan.py requires python-image plus a couple of other (as yet, unidentified) python libs
[00:19:27] <Jymmm> if a stepper as 200 steps (1/8 stepping) would 256 pules per rotation be enough?
[00:19:48] <Jymmm> s/as/has/
[00:20:06] <websys> how far does your machine move in 200 steps?
[00:20:37] <Jacky^> paul_c: yes, i've seen
[00:20:46] <Jymmm> 5tpi ballscrews on 2:1 gears (I dont' know the math to calc it)
[00:22:23] <websys> so 10tpi...you have to make 10 revs to move 1" how many puleses per rev?
[00:22:57] <Jymmm> i honestly dont know
[00:25:47] <Jymmm> ok a 8253 outputs to IRQ0 every 53mS (18.2 ticks per second)
[00:26:37] <Jymmm> cant find the timing of the midi port =(
[00:26:50] <websys> well assume 100 pulses per rev... = 1000 puls/in at 300 ipm = 300K puls/min = 5K pulses/sec
[00:26:56] <websys> per axis
[00:27:51] <paul_c> time to go... Night all.
[00:28:49] <Jymmm> do we need to catch ALL 5k pulses?
[00:28:50] <websys> which in serial terms means you need at least 56K baud
[00:29:36] <websys> if you want to know where your machine is
[00:30:07] <Jymmm> well, we are not actually counting the pulses, just looking for changes in the pulse trian
[00:31:07] <Jymmm> if I understand it correctly
[00:32:44] <websys> well I do know that a number of people are going toward dedicated cards to handle the IO since the parport isn't fast enough
[00:33:11] <websys> but these are closer to comercial machines
[00:34:36] <Jymmm> well, encoders are serials devices by nature. is it 3/4 encoders being sent tothe parallel port that too slow?
[00:34:43] <Jymmm> 3 or 4
[00:37:55] <websys> could be - may be too many resources are tied up in processing so getting a card to handle it gives the higher reliability
[00:38:42] <Jymmm> or maybe most machien dont have a sound card/game port either
[00:38:59] <Jymmm> game port == bastard step child interface =)
[00:39:27] <Jymmm> this is interesting reading http://www.epanorama.net/documents/joystick/pc_joystick.html#introduction
[00:39:35] <websys> seems the new standard interface is USB
[00:39:47] <websys> well - have to call it a night - good luck with your research
[00:39:54] <Jymmm> gnight
[01:08:41] <Jacky^> Jymmm: it would be beautiful to see to work this 3D scanner :P
[01:10:04] <Jymmm> see what Jacky^?
[01:10:22] <Jacky^> the homebuild scanner working
[01:10:53] <Jymmm> you have/built a scanning probe yet?
[01:11:12] <Jacky^> no, i'm looking around
[01:12:14] <Jacky^> the url pasted by Paul_c is better i've found at the moment
[01:12:15] <Jymmm> http://www.indoor.flyer.co.uk/probe.htm
[01:13:27] <Jacky^> Jymmm: nice url :P
[01:18:09] <Jacky^> ugh
[01:18:20] <Jacky^> bedtime for me, have a fun
[01:18:26] <Jymmm> gnight
[01:18:34] <Jacky^> night Jymmm
[04:54:23] <Jymmm> wb
[05:12:36] <dan_falck> Jymmm: how's it going?
[05:12:57] <Jymmmm> not too shabby, how bout yourself?
[05:13:07] <dan_falck> good, I think
[05:13:18] <dan_falck> I bought a Bridgeport this week
[05:13:22] <Jymmmm> new?
[05:13:37] <dan_falck> old, but with some goodies ;)
[05:13:53] <Jymmmm> aut tool changer?
[05:13:56] <Jymmmm> auto
[05:14:03] <dan_falck> Centroid CNC control, 30 quick switch tooling, huge rotary table
[05:14:06] <Jymmmm> BJ attachemnt?
[05:14:14] <dan_falck> ?
[05:14:21] <dan_falck> oh
[05:14:22] <Jymmmm> if you dont mind.... $$??
[05:14:29] <dan_falck> $4500
[05:14:39] <Jymmmm> completely working?
[05:14:42] <dan_falck> plus 3 vises
[05:14:48] <dan_falck> yes completely
[05:14:53] <Jymmmm> awesome deal
[05:15:03] <Jymmmm> at least I think so
[05:15:04] <dan_falck> riggers are moving it for me Wednesday morning
[05:15:19] <dan_falck> got to get a space cleared out in my garage
[05:15:23] <Jymmmm> finally caught that one huh? lol
[05:15:31] <Jymmmm> Got Dumpster?
[05:16:02] <dan_falck> it's hard to throw stuff away.....
[05:16:15] <dan_falck> but I'm not throwing anything good away
[05:16:24] <Jymmmm> try living in an apartment and say that!
[05:16:31] <dan_falck> sorry
[05:16:37] <Jymmmm> me too =(
[05:16:47] <dan_falck> yea I've done apartments
[05:17:05] <dan_falck> did one 4 years ago. in transition between places
[05:17:26] <dan_falck> my stuff was stored everywhere. Father in laws place, work
[05:17:56] <Jymmmm> all my stuff is here. Jsut some VERY creative storage methods
[05:18:53] <dan_falck> be right back
[05:18:57] <Jymmmm> k
[05:19:27] <Jymmmm> Jymmmm is now known as Red70sShow
[05:19:27] <Red70sShow> Red70sShow is now known as Jymmmm
[05:22:11] <dan_falck> well, I need to figure out where to put it...I'll talk to you later
[05:24:58] <Jymmmm> Jymmmm is now known as Jymmm
[08:35:45] <alex_joni> morning
[09:34:42] <Jacky^> morning
[10:07:06] <Yuga> atleast u didnt say good morning this time :P
[10:08:06] <Jacky^> hello Yuga :)
[10:08:22] <Jacky^> i'm going to machine some piece :D
[10:08:43] <Yuga> been reading all night.. and might actualy goto bed some time :)
[10:08:55] <Yuga> i think i have changed my mind again
[10:09:00] <Jacky^> ouch..
[10:09:17] <Yuga> aaarrrggg... cnc headache
[10:09:25] <Jacky^> :P
[10:12:27] <Jacky^> u can read about cnc for mounts, years ...
[10:13:15] <Yuga> i know
[10:13:35] <Yuga> i should actualy just sit down and do... cause that way i arent alowed to change my mind :P
[10:14:19] <Jacky^> when you'll start action with cnc work you begin to pratically learn
[10:14:53] <Jacky^> if you get controllers and motors you could start to try something..
[10:15:14] <Jacky^> such setup your ini file properly
[10:15:25] <Yuga> was going to use ballscrews... not going to no more... going to use rack and pinion
[21:24:14] <Jacky^afk> Jacky^afk is now known as Jacky^
[21:24:19] <Jacky^> evening
[21:48:40] <Yuga> hey all
[22:05:10] <lilo> [Global Notice] Hi all. I'll be posting something later, but I wanted to mention this while people are still around for Friday.... if all goes well, we may do final testing of Hyperion 1.0RC* on the production freenode network on Monday morning around 9am UTC. Testing will last from about 30 minutes up through, well, permanent cutover, depending on how well it goes. 8)
[22:05:32] <lilo> [Global Notice] Please let us know if this presents any insurmountable difficulties; feel free to /msg me. Thanks.
[22:51:04] <gezr> howdy
[23:02:11] <Jacky^> hello
[23:16:44] <paul_c> \o/ looks like another bug nailed.
[23:16:54] <gezr> nice
[23:16:58] <gezr> paul_c : how have you been?
[23:18:07] <paul_c> Oh... Ranging from unbounded excitement through to really pissed.
[23:18:34] <gezr> well I hope I dont add to that frustration any
[23:19:16] <paul_c> nah... I have the ultimate weapon to hand...
[23:19:26] <paul_c> /ban ;)
[23:20:25] <gezr> ah yeah user mode +b
[23:24:26] <paul_c> gezr: So what have you been up to ?
[23:26:26] <gezr> lots and lots of work
[23:27:20] <gezr> more dreaming, no progress on the bike as of last time I was on, but Im almost finished building the privacy fence, ive been keeping up with the dev and user emails
[23:28:18] <gezr> I wish I could say that I have mastered C, and I am ready to upload fixes, but I cant
[23:29:09] <paul_c> There is always documentation...
[23:29:37] <paul_c> even simple little things like adding doxygen tags to the source code would be a great help....
[23:33:06] <gezr> I sorta started that before we went to working 10 hour days in this heat
[23:34:44] <gezr> we shipped some stuff to England a few months ago I think, maybe last month I cant remember now
[23:42:26] <gezr> trying a emc2 cvs up build now, I can hardly remember what to do
[23:43:15] <paul_c> cd drc && ./configure && make
[23:43:25] <paul_c> cd src && ./configure && make
[23:43:58] <gezr> drc?
[23:44:12] <gezr> oh, yeah, src :), yeah
[23:44:30] <gezr> on the make phase now, im thinking about moving that drive to my faster computer, the one its on is really old and slow
[23:57:32] <gezr> hmm