#emc-devel | Logs for 2007-08-16

[18:44:11] <SWPadnos> anybody want a 5i22 at the qty. 5 price? ($342 vs $429)
[18:44:40] <SWPadnos> or a 7i37T? ($65 vs. $79)
[18:45:08] <cradek> I need whatever it takes to get +-10 and encoders+io
[18:45:43] <SWPadnos> the 7i37T is a screw-terminal version of the 16 input+8 output card
[18:46:07] <cradek> isolated?
[18:46:09] <SWPadnos> hte 7i33 is the encoder + analog servo interface ($69)
[18:46:11] <SWPadnos> yes
[18:46:27] <cradek> I'll take 'em if that helps your order
[18:47:16] <SWPadnos> I don't think I need more units to get the discount - just figured I'd offer the discount to anyone who wants it
[18:47:34] <SWPadnos> I think I'll be ordering for my customer, but I don't know for sure yet
[18:47:54] <cradek> ah ok, for the $10 it's not worth the trouble to go through you and have you reship
[18:47:56] <SWPadnos> (qty 4 is about the same as qty 5, and they want 4, so I'll get one for myself :) )
[18:48:51] <SWPadnos> I think shipping to you should be around $4 or $5 fora couple of small interface boards, and it's no trouble to do it
[18:48:53] <jepler> cradek: did you get anything but a 5i20 last time? I have one of the isolated I/O boards (ribbon cable, not screw terminals, on the output side) if that helps you
[18:48:55] <SWPadnos> no charge for the inbound
[18:49:11] <cradek> I got the H bridge + encoder thing
[18:49:36] <SWPadnos> hmmm. I have you down for the H-bridge and the isolated digital I/O card
[18:49:42] <cradek> oh?
[18:49:50] <SWPadnos> not the servo interface
[18:49:52] <cradek> hmm I guess I got the isolated digital thingy
[18:49:56] <SWPadnos> heh
[18:50:01] <skunkworks> funny
[18:50:58] <cradek> maybe I ought to wait to buy stuff. I should check out the existing wiring (once I get the docs) and plan a bit
[18:51:11] <skunkworks> cradek: I think you want the 7i33
[18:51:13] <SWPadnos> the discount is much more significant on the 1.5M-gate FPGA card with 96 I/Os :)
[18:51:20] <skunkworks> analog servo interface
[18:51:35] <SWPadnos> yeah - the 7i33 is going to be needed no matter what
[18:51:52] <cradek> I wish it had screws
[18:52:00] <SWPadnos> yeah - that would be a very good thing
[18:52:20] <SWPadnos> unfortunately, he's only got terminal versions of the 7i37 and the 7I42 - the two digital I/O cards
[18:53:24] <SWPadnos> yay - looks like I'll be ordering the Mesa stuff
[18:53:29] <SWPadnos> I love freebies
[18:54:57] <jepler> SWPadnos: the parport cards aren't available yet, are they?
[18:55:04] <SWPadnos> I'll ask when I call
[18:58:54] <SWPadnos> incidentally, Peter W sent me some SPI code, I'll be making a HAL/FPGA component with that for the A/D and D/A card I'm designing
[18:59:26] <SWPadnos> I think it'll end up with 6 inputs and 8 outputs, all 16-bit, with a max update rate in the couple hundred KHz area
[19:01:43] <SWPadnos> no takers on the 5i22 or 7i37T?
[19:01:56] <jepler> 100kHz is probably faster than you can read it out with HAL anyway
[19:01:58] <cradek> guess not me
[19:03:58] <SWPadnos> ok. order in, though I can probably add items for a little while (in case jmkasunich__ is watching ...)
[19:04:19] <SWPadnos> the 7i43 is not ready yet - they only have prototypes
[19:04:37] <SWPadnos> the 7i37T is sort of ready - they had a batch that got over-cooked or something, so they're a little warped
[19:05:21] <skunkworks> do you have a link for either of them?
[19:05:45] <SWPadnos> err - www.mesanet.com , select parallel I/O - Misc I/O
[19:05:53] <skunkworks> thanks
[19:06:33] <SWPadnos> the 7i43 is the first item, the 7i37T is listed along with the 7i37 - it's the same electrically, it just has screw terminal instead of the 50-pin ribbon cable for the outputs
[19:08:24] <skunkworks> is it the same price for the screw terminals?
[19:08:29] <SWPadnos> nope - a bit more
[19:08:40] <SWPadnos> the 7i37T is on the price list page
[19:08:50] <skunkworks> god - I suck at the internet
[19:09:06] <SWPadnos> $10 more
[19:09:06] <skunkworks> ok - I see - 10 dollars more.
[19:09:14] <SWPadnos> yes, for a few dollars more
[19:09:18] <SWPadnos> :)
[19:09:29] <skunkworks> wow - that is a really good price compared to the pluto for what you get.
[19:09:30] <SWPadnos> I think it totals a fistful of dollars
[19:09:36] <SWPadnos> yeah
[19:10:06] <skunkworks> not that I can do anything with it until someone writes the firmware
[19:10:43] <SWPadnos> well, it's mostly written. the VHDL and verilog code for the mesa and pluto FPGAs can be "recompiled" for the new device
[19:11:17] <SWPadnos> the "only" thing that needs to be done is to recosntruct the pin constraints file for the new FPGA
[19:12:06] <SWPadnos> (I put only in quotes just because even though this sounds trivial, it may not be)
[19:15:45] <skunkworks> heh
[20:01:05] <alex_joni> SWPadnos: I want one of your analog boards when it's done :P
[20:01:16] <SWPadnos> no problem
[20:02:24] <SWPadnos> I'm not sure what the final cost will be yet. even without prototype PCBs and assembly, the components will probably be in the $150 range
[20:02:57] <alex_joni> I was probably joking :)
[20:03:12] <alex_joni> haven't unpacked the mesa yet.. not sure what I'll do with it :P
[20:03:15] <SWPadnos> the :P clued me in a little :)
[20:17:44] <alex_joni> * alex_joni drools over ST31000640NS
[20:23:37] <SWPadnos> looks pretty similar to the Hitachi 7k1000
[20:23:49] <alex_joni> also server-grade?
[20:24:21] <alex_joni> they have the regular Barracuda 7200.11
[20:24:31] <alex_joni> but this is a Barracuda ES.2
[20:25:47] <alex_joni> anyways.. off to bed now
[20:25:50] <alex_joni> good night all
[20:26:12] <SWPadnos> night-o
[23:38:04] <Guest459> so - I got the stepper card to where it was befor it smoked. It seems as if one or more of the coils is energized all the time.
[23:38:10] <Guest459> oops
[23:38:16] <Guest459> Guest459 is now known as skunkworks_
[23:43:20] <skunkworks_> yep - 16 volts all the time on 2 of the windings.
[23:43:41] <skunkworks_> the z axis was also fixed once before - very poor job
[23:45:30] <skunkworks_> it actually is the l298/297 combo. so the current limiting should be working
[23:51:01] <skunkworks_> hmm 2v on the ref for the z axis - .6v for the other 2 axis.
[23:54:10] <jmkasunich__> jmkasunich__ is now known as jmkasunich