#emc | Logs for 2005-07-04

[00:00:09] <bpmw_> yes on page 3
[00:00:14] <robin_sz> right, yeah active low ..
[00:00:19] <jmkasunich> in the hal file, add lines like:
[00:00:26] <robin_sz> BUt .. I suspect the are edge triggred anyway
[00:00:38] <jmkasunich> setp parport.0.pin-02-out-invert TRUE
[00:00:50] <jmkasunich> for each parport pin that is being used for a CW or CCW signal
[00:01:20] <robin_sz> jmkasunich: coo, I can feel the awesome power of HAL even from here :)
[00:01:33] <jmkasunich> robin: with CW and CCW signals there may be interlocking, it may only accept a pulse when the other input is inactive
[00:01:42] <robin_sz> noted
[00:02:12] <robin_sz> but as you say, piece of cake to solve with HAL anyway
[00:02:49] <bpmw_> John, is that for the "+" ones or the"-" ones or both
[00:03:24] <jmkasunich> the plus ones get connected to +5V (you will have a total of six wires connected to +5V for a three axis machine)
[00:03:33] <jmkasunich> the minus inputs get connected to parport pins
[00:03:47] <jmkasunich> again a total of six pins, probably pins 2 thru 7
[00:03:56] <jmkasunich> you will need to invert pins 2 thru 7
[00:04:35] <robin_sz> those motors should fly nicely on those drives ...
[00:04:44] <robin_sz> pity no torque curves though
[00:04:51] <bpmw_> Ok, Thanks. Well I hope this does the trick its been a long voyage.
[00:05:01] <robin_sz> should do
[00:05:03] <jmkasunich> note: be very carefull with that plus 5V... it is coming from the PC power supply and probably has enough current to smoke the wire if you short it to ground
[00:05:21] <jmkasunich> no sloppy connections, make sure it is well protected from accidental shorts
[00:05:33] <bpmw_> I have a torque curve here for these
[00:05:50] <robin_sz> or put a 27R resistor close to where you pick it up ...
[00:06:11] <jmkasunich> a 27 ohm 1/4 watt fuse?
[00:06:41] <bpmw_> The torque is max a 675 pulses per second and falls off exponentially from there
[00:07:11] <robin_sz> right ..
[00:07:16] <jmkasunich> not quite 3.5 revs/sec
[00:07:24] <robin_sz> so you need to run above that fro max power
[00:07:41] <jmkasunich> are these connected directly to the leadscrews, or are you using belts/gears/etc?
[00:07:59] <bpmw_> chain drive 2:1
[00:08:06] <robin_sz> chain?
[00:08:12] <robin_sz> wow ...
[00:08:15] <bpmw_> yup
[00:08:18] <jmkasunich> big sproket on motor or screw?
[00:08:25] <bpmw_> screw
[00:08:25] <robin_sz> * robin_sz check to see if it is 1903
[00:08:35] <jmkasunich> smartass
[00:08:42] <robin_sz> tpi on the screw?
[00:08:47] <bpmw_> 10
[00:08:54] <robin_sz> wow
[00:09:00] <robin_sz> gonna be slow :)
[00:09:12] <jmkasunich> so 20 revolutions of the motor per inch
[00:09:19] <robin_sz> yep
[00:09:23] <jmkasunich> and 3.5 revs per sec at max torque
[00:09:29] <robin_sz> well ...
[00:09:39] <robin_sz> yeah
[00:09:56] <robin_sz> step motor are constant power above that point
[00:10:05] <bpmw_> What does that equate to in Ipm?
[00:10:08] <jmkasunich> 10.5 ipm at that point
[00:10:13] <robin_sz> right
[00:10:30] <bpmw_> I can live with that
[00:10:32] <jmkasunich> given 1200 oz-in, I'd probably get rid of the 2:1 ratio
[00:10:40] <robin_sz> yep
[00:10:45] <bpmw_> beats the 2 im at know
[00:10:50] <jmkasunich> this is basically a mill-drill, right?
[00:11:00] <bpmw_> yes sir
[00:11:00] <robin_sz> mini?
[00:11:04] <robin_sz> wow ..
[00:11:05] <jmkasunich> 1200 should be plenty for that
[00:11:09] <bpmw_> not mini
[00:11:21] <robin_sz> sounds more like BP sized
[00:11:23] <jmkasunich> 500-600 lb machine, right?
[00:11:39] <bpmw_> 850 lbs
[00:11:47] <jmkasunich> ok, big mill-drill
[00:11:55] <jmkasunich> no knee though?
[00:11:58] <robin_sz> should be able to get 20 to 30 ipm out of it I reckon
[00:12:13] <robin_sz> certainly 20
[00:12:14] <jmkasunich> anyway, first get it turning, then get it fast
[00:12:25] <jmkasunich> leave the chain drive on for now
[00:12:37] <robin_sz> yep
[00:12:46] <robin_sz> acme or ballscrew?
[00:12:46] <bpmw_> I have to at this point
[00:12:48] <jmkasunich> actually my first step would be to remove the chain, so the motor can spin freely
[00:12:51] <robin_sz> Im guessing acme
[00:12:59] <bpmw_> acme
[00:13:06] <robin_sz> yeah
[00:13:14] <robin_sz> gonna need some turning
[00:13:23] <jmkasunich> then get the motors running, and only once they are running, then connect up the chain
[00:13:48] <jmkasunich> that way if you have problems (like only going one way) you don't have to constantly stop and wind the table back
[00:14:01] <bpmw_> Thats no problem to take out master link
[00:14:11] <robin_sz> http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=11834&item=7526274976&rd=1
[00:14:35] <robin_sz> it will be mine .. oh yes, it will be mine
[00:14:40] <jmkasunich> and you could also test the motors using freqgen and HAL (if you were able to IRC from that machine, I could probably walk you thru that, but since it is another computer with no internet, that won't work)
[00:14:56] <robin_sz> jmkasunich: I dont understand
[00:15:17] <jmkasunich> my personal method for bringing up a motor with emc2/hal
[00:15:26] <robin_sz> I thought for a moment there you said someting about a computer with no internet ...
[00:15:40] <jmkasunich> load only the parport driver and stepgen or freqgen, and run the motor from the command line using HAL
[00:16:21] <jmkasunich> yes robin, there are those in the world
[00:16:27] <robin_sz> wow ...
[00:16:35] <jmkasunich> bpmw's machine is in the garage, and is sadly disconnected from the net
[00:16:48] <robin_sz> can we buy him some wire?
[00:18:19] <bpmw_> I have to eat supper now and then I will hook up drive as you sugessted. Will check back later, THANKS to both of you!!!
[00:18:29] <jmkasunich> good luck
[00:18:58] <robin_sz> good luck from me too
[00:18:59] <bpmw_> THANKS
[00:19:18] <robin_sz> although why you need good luck to eat supper is beyond me ;)
[00:19:21] <bpmw_> Bye for now!
[00:19:38] <jmkasunich> maybe he's eating fugu
[00:19:50] <robin_sz> yeeuw
[00:23:20] <bpmw_> Hi guys, what is the url for todays logger?
[00:24:32] <bpmw_> I went to print out instructions and got yesterdays sesion
[00:28:03] <robin_sz> you went to the wrong URL
[00:28:24] <bpmw_> Is ther a new one everyday
[00:28:27] <robin_sz> yep
[00:28:35] <robin_sz> logger_aj: url?
[00:28:35] <robin_sz> I'm logging. Sorry, searching removed.
[00:28:42] <robin_sz> logger_aj: url
[00:28:42] <robin_sz> I'm logging. I don't understand 'url', robin_sz. Try /msg logger_aj help
[00:28:49] <robin_sz> logger_aj: link
[00:28:49] <robin_sz> I'm logging. I don't understand 'link', robin_sz. Try /msg logger_aj help
[00:29:25] <robin_sz> logger_aj: help
[00:29:35] <robin_sz> bookmark, thats it
[00:29:46] <robin_sz> logger_aj: bookmark
[00:29:46] <robin_sz> See
[00:31:25] <bpmw_> Ok, greatthat has the info i was looking for. THANK YOU!!!
[00:33:11] <bpmw_> Ok, now I'll see ya later!
[01:03:50] <cradek> http://www.cbc.ca/cp/business/050630/b0630102.html
[01:03:55] <cradek> ... ouch.
[01:08:25] <Jymmm> cradek : No shit huh.
[01:09:42] <Jymmm> cradek : Though, there are smart folks in other parts of the country
[01:23:18] <Jymmm> Jymmm is now known as Red70sShow
[01:23:19] <Red70sShow> Red70sShow is now known as Jymmm
[02:41:59] <bpmw_> Hi John/ Robin, no luck can't even get stepper to turn 1 rotation. I give up!
[02:46:29] <bpmw_> Hmmm, I guess I scared him off:)
[03:32:30] <Jymmm> howdy Phydbleep
[03:37:05] <Phydbleep> * Phydbleep was watching the netsplit.
[03:39:15] <Jymmm> Phydbleep what's to watch?
[03:40:04] <Phydbleep> Everybody splits.. Everybody rejoins.. Lots of server msg spamming.. :)
[03:40:22] <Jymmm> lol, you're bored huh?
[03:54:30] <Phydbleep> No I'm taking a break from dealing with the fickung plumbing that wants to backup EVERY frikken holiday weekend. :\
[04:01:02] <Jymmm> Phydbleep : so all your friends and family that come over on the holidays are all full of shit?
[04:01:22] <Jymmm> Phydbleep : Or... They dump all their shit on you?
[04:02:45] <Jymmm> (rimshot)
[04:09:14] <Phydbleep> No, It's really wierd.. Nobody came over.. The plumbing just goes to hell in time for the holiday.. :(
[04:10:03] <tomp-tag> MSG mshaver_honeydo Matt, when is the next Galesberg rendezvous?
[04:16:25] <tomp-tag> anyone here added custom Mcodes to EMC?
[04:19:33] <tomp-tag> anyone here know when we'll return to the MAZAK in Galesberg?
[04:21:38] <tomp-tag> anyone here?
[04:22:25] <SWPadnos> SWPadnos is now known as SWP_Away
[05:35:29] <LawrenceG> pretty quiet
[06:08:34] <CIA-8> 03mshaver 07NML_take_2 * 10emc2/src/emc/nml_intf/emc2.hh: Started commenting on NML messages. Search for MGS to see my comments.
[06:23:34] <A-L-P-H-A> hush little baby don't you cry, cause mama's gonna come drive by with a .45
[06:23:44] <Jymmm> lol
[07:22:47] <ValarQ> you american gun nuts...
[07:23:04] <ValarQ> :P
[07:30:58] <Jymmm> ValarQ "COME SAY THAT TO MY FACE!"
[07:31:02] <Jymmm> =)
[07:35:29] <ValarQ> heh
[07:36:40] <Jymmm> G'Night Folks =)
[07:36:43] <ValarQ> hmm, i found some article about my old gun
[07:36:54] <ValarQ> Jymmm: g'dnite
[07:37:05] <Jymmm> val you gun freak you! =)
[07:37:09] <Jymmm> ValarQ you gun freak you! =)
[07:37:14] <Jymmm> HAsta!
[07:38:03] <ValarQ> * ValarQ used a M45B when he did military service
[07:38:04] <ValarQ> :)
[09:27:15] <ValarQ> 'lo joni
[09:32:03] <alex_joni> 'lo captain
[09:32:40] <ValarQ> heh, i was only sergeant...
[09:33:51] <alex_joni> :P
[09:33:54] <alex_joni> close enough ;)
[09:34:02] <ValarQ> yeah :)