#emc-devel | Logs for 2007-02-12

[00:03:06] <SWPadnos> whatcha need?
[00:03:35] <SWPadnos> a-l-p-h-a, but be quick about it - I'm about to start playing Wolf:ET :)
[00:05:33] <jmkasunich> * jmkasunich listens in
[00:06:02] <SWPadnos> heh - I'm not hearing anything - you? :)
[00:06:09] <jmkasunich> nope
[00:06:36] <SWPadnos> did I ever paste in the part numbers for the mating connectors (4-pin power and the mate-n-lock motor connectors)?
[00:06:51] <jmkasunich> I dunno
[00:07:08] <SWPadnos> I think I did, and DK was out of stock but Mouser had some
[00:07:13] <jmkasunich> you probably did, but pastes into IRC don't last
[00:07:19] <SWPadnos> nope
[00:07:59] <SWPadnos> well, one more time: motor plug: 172340-1, Pin insert: 770988-3, 4-pin plug: 641127-4
[00:08:03] <SWPadnos> all by AMP/Tyco
[00:08:43] <SWPadnos> oh right - DK only sells those in reel quantity - 3000 at a time (but $0.25 each)
[00:08:43] <a-l-p-h-a> hey
[00:08:44] <a-l-p-h-a> sorry
[00:08:56] <a-l-p-h-a> okay... looking for a digikey purchase...
[00:09:00] <a-l-p-h-a> dunno what I should be getting.
[00:09:03] <a-l-p-h-a> looking at wireterms.
[00:09:13] <a-l-p-h-a> and trying to figure out what I should go get.
[00:09:26] <a-l-p-h-a> break out boards, 50pin female headers...
[00:09:40] <SWPadnos> ah. I don't think DK will be the place for breakout boards
[00:09:42] <a-l-p-h-a> and looking to see if there are any other toys I should be looking at...
[00:09:57] <a-l-p-h-a> SWPadnos, making my own breakout boards (BOB).
[00:10:04] <SWPadnos> ok
[00:10:22] <a-l-p-h-a> just gonna make a BOB, as I don't think $45 is a good idea, especially if I'm gonn have like 3.
[00:10:37] <SWPadnos> well, do you want 50-pin cables to go from Mesa <-> breakout?
[00:10:47] <SWPadnos> so you'd need headers then ...
[00:11:09] <SWPadnos> make a BOB that plugs onto the Mesa card, and have terminal strips ...
[00:12:11] <a-l-p-h-a> yeah... not sure if I should be like buying 5rows of 10Wire terms... or look for like 25pin ones... of should I go for 2x24pins (as there are not 2x25).
[00:13:00] <SWPadnos> even the DIN-rail 50-pin breakout boards use a bunch of bi-level 2x3 headers (plus a 2x2 at the end)
[00:13:16] <SWPadnos> err - terminal strips, not pin headers ...
[00:17:40] <a-l-p-h-a> SWPadnos, what's the mesa manual page again?
[00:17:58] <SWPadnos> http://www.mesanet.com/ ??
[00:18:20] <SWPadnos> http://www.mesanet.com/pdf/parallel/5i20man.pdf
[00:20:55] <a-l-p-h-a> I could get away with two 24 pin wire terms... and just not send out power/gnd on another break out pins elsewhere.
[00:21:24] <a-l-p-h-a> which would mean I just needed six 24pin connects, and a bunch of misc power/gnd connects for other toys elsewhere.
[00:21:34] <SWPadnos> you'll probably get a better per-pin price if you get a higher quantity of a smaller terminal strip
[00:21:54] <SWPadnos> like 25 6-pin or 50 3-pin
[00:22:03] <SWPadnos> they attach together to make larger blocks
[00:22:11] <a-l-p-h-a> true.
[00:22:53] <a-l-p-h-a> looking at Fig 1. http://dkc3.digikey.com/PDF/T071/0277.pdf
[00:24:01] <SWPadnos> ok
[00:24:11] <a-l-p-h-a> they do snap together... I have some 3 and 4pin ones here.
[00:26:02] <SWPadnos> another thing to think about in making the BOBs is that you can group pins by function, and maybe use smaller terminal blocks for each "group"
[00:26:25] <SWPadnos> like make an 8-pin encoder connector - Vcc, Gnd, and A/B/Z differnetial pairs
[00:26:27] <a-l-p-h-a> I have this as a break out board, currently... sec...
[00:28:10] <a-l-p-h-a> http://cgi.ebay.com/CNC-Robotics-Parallel-Port-Breakout-Board_W0QQitemZ110090184768QQihZ001QQcategoryZ78196QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
[00:28:18] <a-l-p-h-a> same guy... except mine's blue.
[00:29:24] <SWPadnos> and you want to connect the Mesa card to that?
[00:30:14] <SWPadnos> are all the isolation parts missing from that board, or is it just me?
[00:30:40] <a-l-p-h-a> SWPadnos, ALL, except liek 2 pins.
[00:30:42] <a-l-p-h-a> like
[00:31:05] <SWPadnos> all wqhat?
[00:31:07] <SWPadnos> what
[00:31:20] <a-l-p-h-a> there's a hex invert that is connected to two pins.
[00:31:30] <SWPadnos> that's not isolation, that's buffering
[00:31:39] <a-l-p-h-a> none then.
[00:32:04] <SWPadnos> and I only see one component on that board that could be an IC anyway ...
[00:32:17] <SWPadnos> ah yes - it is an IC - I see the pins now
[00:33:00] <SWPadnos> but there are a lot of conponents missing from that board, so who knows
[00:33:22] <a-l-p-h-a> well... it's a 7404 IC, If I remember correctly.
[00:33:28] <a-l-p-h-a> they aren't isolated
[00:33:42] <SWPadnos> ok. though that description says they are ...
[00:33:42] <a-l-p-h-a> "Completely opto-isolated to prevent any feedback or PC damage." bullshit.
[00:34:06] <jmkasunich> thats what is known as "marketing" in the business world
[00:34:18] <jmkasunich> in the real world its known as "lying"
[00:34:32] <SWPadnos> anyway - my original question was - do you want to connect the mesa to that, or replace it with something else?
[00:34:46] <a-l-p-h-a> I want the mesa to connect to these things.
[00:34:58] <SWPadnos> next question: why?
[00:35:16] <a-l-p-h-a> break out, easier connection to my gecko's later on.
[00:35:48] <SWPadnos> but no isolation for your $200 mesa card ...
[00:35:59] <a-l-p-h-a> I'm looking to make an isolation board...
[00:36:05] <a-l-p-h-a> that other one, is my current setup.
[00:36:20] <SWPadnos> ok, so you're planning on replacing that board with something that connects to the Mesa ...
[00:36:33] <SWPadnos> but still provides terminal strips for your machine ...
[00:37:23] <a-l-p-h-a> yes
[00:38:07] <SWPadnos> well, it may sound counterintuitive, but I'd decide on what configuration you'll want to use the Mesa in, then design the breakout board9s) around that
[00:38:15] <SWPadnos> board(s)
[00:38:41] <SWPadnos> the 5i20 is too flexible to design a breakout board for - or at least an economical one
[00:39:15] <SWPadnos> it's a pain to make an isolated I/O board that lets you select the direction on a pin-by-pin basis, for example
[00:40:24] <a-l-p-h-a> okay... I'll hold off till I get stablized on a design.
[00:41:04] <SWPadnos> good plan. you may be able to make a board that lets you relatively easily select I/O direction in 4 or 8-bit blocks
[00:41:22] <SWPadnos> but I'd decide on how many motors, inputs, outputs, encoders, VFDs ... you want first
[00:41:28] <a-l-p-h-a> here's what I envision...
[00:42:15] <a-l-p-h-a> estop, limits, 4 axis stepper, spindle motor speed controller, various power relays
[00:42:33] <SWPadnos> homes?
[00:42:40] <a-l-p-h-a> homes too.
[00:42:42] <SWPadnos> is that separate upper and lower limits for each axis?
[00:42:52] <SWPadnos> any external buttons or lights?
[00:42:58] <SWPadnos> pendant?
[00:43:01] <SWPadnos> ...
[00:43:02] <SWPadnos> :)
[00:43:06] <a-l-p-h-a> :( so much
[00:43:09] <a-l-p-h-a> I want all the toys.
[00:43:16] <a-l-p-h-a> I have the basic ability to make it all!
[00:43:18] <SWPadnos> count the I/Os, and see where you get :)
[00:43:30] <SWPadnos> there are 72, so a lot of things can be done there
[00:43:42] <a-l-p-h-a> is that enough for a femme bot?
[00:43:46] <SWPadnos> nope
[00:43:50] <SWPadnos> err - I don't know ...
[00:45:22] <a-l-p-h-a> maybe I should go make a pendant...
[00:45:44] <SWPadnos> maybe I should go do some fragging :)
[00:45:46] <a-l-p-h-a> was thinking the pendant would go RS232 instead.
[00:45:52] <a-l-p-h-a> SWPadnos,... where you playing?
[00:45:54] <SWPadnos> rs232 = harder to deal with
[00:45:59] <SWPadnos> usually on HH servers
[00:46:03] <a-l-p-h-a> was gonna let EMC handle it.
[00:46:07] <a-l-p-h-a> why wolfET? there are other servers...
[00:46:08] <SWPadnos> wolf:ET, not UT
[00:46:10] <a-l-p-h-a> err... other games.
[00:46:14] <SWPadnos> because I have Wolf, and I like it
[00:46:34] <a-l-p-h-a> nono... there are other free FTPs out there, that kick butt.
[00:46:43] <a-l-p-h-a> wolfET is good... but I don't see enough maps
[00:46:44] <SWPadnos> I understand, but I do like wolf
[00:46:51] <SWPadnos> there are many that I play
[00:47:05] <a-l-p-h-a> hmm... maybe cause the servers I played on, didn't have them.
[00:47:05] <SWPadnos> several MLB ones, a few others
[00:47:12] <a-l-p-h-a> Baseball?
[00:47:20] <SWPadnos> I don't know if you've used the "no quarter" mod before - it's very good
[00:47:25] <SWPadnos> I like the shitgun
[00:47:27] <SWPadnos> shotgun ;)
[00:47:32] <a-l-p-h-a> heh
[00:47:40] <a-l-p-h-a> I'll redownload wolfET.
[00:47:52] <SWPadnos> don't forget the 2.60b patch
[00:48:15] <SWPadnos> I like the HH servers: or
[00:48:39] <SWPadnos> http://www.hh-ops.com/
[00:48:59] <SWPadnos> oooh - looks like Alpha Base has 21 players on - time to go :)
[00:51:27] <a-l-p-h-a> omg... that site is using php-nuke. hahaha
[01:24:56] <a-l-p-h-a> can't get wolfET to load... official pak files not found...
[01:24:59] <a-l-p-h-a> no clue why...
[08:31:20] <a-l-p-h-a_> a-l-p-h-a_ is now known as a-l-p-h-a
[21:08:27] <jepler> sourceforge news: 2007-02-12: The shell server was taken offline for unscheduled maintenance. We estimate the outage will last at least 24 hours.
[21:09:02] <jepler> I'm glad we barely have any services on sourceforge anymore
[23:18:50] <jepler> jmkasunich: I'm seeing something weird from stepgen when I change the maxaccel in a running system
[23:19:28] <jepler> jmkasunich: I have stepgen traking siggen 'sine' output. First I make maxaccel so large that it can easily track. Then I change maxaccel to be so low that it can't.
[23:20:17] <jepler> if it was near the peak velocity in one direction it (unsurprisingly) overshoots quite a bit. but then it overshoots GOING THE OTHER DIRECTION, which I did not expect
[23:24:02] <jepler> http://emergent.unpy.net/index.cgi-files/sandbox/overshoot-twice.png
[23:30:13] <jepler> http://emergent.unpy.net/index.cgi-files/sandbox/overshoot-thrice.png
[23:55:02] <jepler> I run http://emergent.unpy.net/index.cgi-files/sandbox/steps.hal and in another halcmd change stepgen.1.maxaccel from 100 to 1