#avr | Logs for 2012-04-11

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[02:07:46] <Casper> yeah
[02:07:46] <Casper> lots of tests use 0
[02:16:40] <hetii> Did some of you had possibility to play with I.MX233?
[02:19:36] <Casper> what is that? someone that bashed on a keyboard? :D
[02:28:37] <CapnKernel> http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=i.MX233
[02:31:38] <hetii> yep ;) I wondering if it will work on single layout board :>
[02:32:21] <hetii> *layer
[05:04:48] <molavy> how can i check my atmega128 is ok?
[05:05:24] <molavy> because i connected vcc and gnd mistake
[05:05:29] <karlp> look underneath it, make sure it only has blue spots, not red ones?
[05:06:12] <molavy> it on board
[05:06:21] <karlp> you're probably ok, but why not jsut try reconnecting it properly, and trying to reprogram something simple?
[10:44:56] <gkwhc> hi, might anyone have experience using programmable oscillators? i'd like to output 24MHz and also 24.576, but I am not sure if programmable oscillators support such kind of division/multiplication
[11:55:03] <OndraSter> gkwhc
[11:55:05] <OndraSter> he is gone
[11:55:18] <OndraSter> I wanted to say that there are PLLs that have multiple inputs
[12:28:45] <OndraSter> guys, what is the _usual_ output impedance of soundcards? I am expecting it to be few k's or at least hundreds of ohms
[12:29:22] <OndraSter> because I have got here one of those cheap amps
[12:29:30] <OndraSter> and the input is driven directly into some pot
[12:29:45] <OndraSter> which effectively shorts the input to ground when 0 level
[12:30:01] <OndraSter> and I do not know if I should feel good about that
[12:31:36] <Steffanx> wikipedia knows OndraSter
[12:31:36] <Steffanx> http://en.wikipedia.org/wiki/Line_level#Line_out
[12:32:06] <OndraSter> oh ok
[12:32:07] <OndraSter> thanks
[12:32:21] <OndraSter> I tried searching for "output impedance audio card"
[12:32:26] <OndraSter> didn't bring anything useless on that :)
[12:32:54] <Steffanx> Google for "sound card output impedance" next time :)
[12:33:02] <OndraSter> thanks :D
[12:33:27] <OndraSter> 100R sounds reasonable when grounded, with 2V max it does 20mA...
[12:33:33] <OndraSter> more than I would hope for but... okay :/
[12:34:14] <OndraSter> at least some input opamp would be good
[12:36:08] <Casper> remember
[12:36:19] <Casper> the impedance vary widelly between sound cards
[12:36:24] <OndraSter> sure
[12:36:32] <OndraSter> but at least I know that it isn't something like 10R :)
[12:36:40] <OndraSter> but something around 100Ohms
[12:36:41] <Steffanx> Casper you say wikipedia is WRONG?
[12:36:42] <Steffanx> :P
[12:36:58] <Casper> I doubt the output impedance is 1000
[12:37:06] <OndraSter> there is 100
[12:37:08] <OndraSter> not 1000
[12:37:11] <Steffanx> 100Ohm :)
[12:37:16] <OndraSter> 100R
[12:37:23] <OndraSter> 0 and O look similar
[12:37:24] <OndraSter> I know :D
[12:37:37] <Casper> oh 100 yeah possible
[12:38:06] <Casper> but still sound a bit too much... unless it's pure line out... and unable to drive earphone
[12:39:26] <Casper> and also take note that many have a speaker out, not line out too :D
[12:39:28] <Steffanx> oh perhaps line out the right signal
[12:39:40] <Steffanx> Yeah, ofcourse :)
[12:43:15] <Steffanx> It's harder to find that info on the web
[12:50:55] <karlp> don't some of them have some magic to try and automatically switch between line out and speaker out too?
[12:51:36] <Tom_itx> nothing magic, it's all smoke and mirrors
[12:52:42] * karlp grins
[12:53:20] <OndraSter> WHO LET THE SMOKE OUT ....
[12:53:21] <OndraSter> lol
[13:01:03] <Casper> karlp: yeah some have the magic to change from line out to speaker out to line in to mic in...
[15:24:48] <OndraSter_> guys, volume pot should be lin or log? :)
[15:25:05] <dirty_d> log
[15:25:09] <OndraSter_> I knew it!
[15:25:10] <OndraSter_> thanks
[15:25:15] <dirty_d> np
[15:26:29] <RikusW> anyone want some salt ? http://en.wikipedia.org/wiki/Khewra_Salt_Mine
[15:39:33] <OndraSter_> I like making big orders
[15:39:59] <OndraSter_> $0.9 (0.7€, 0.56 GBP) this time :P
[15:40:28] <OndraSter_> pot + knob for it lol
[15:41:12] <dirty_d> lol
[15:43:41] <Steffanx> + 10$ shipping costs OndraSter_ ?
[15:43:46] <OndraSter_> local pickup
[15:43:51] <OndraSter_> about 10 minutes drive from school
[15:43:58] <OndraSter_> by subway
[15:43:59] <OndraSter_> metro
[16:19:43] <OndraSter_> btw I am fixing this
[16:19:43] <OndraSter_> http://www.labtec.com/index.cfm/gear/details/EUR/EN,crid=18,contentid=703,crid2=22
[16:19:48] <OndraSter_> cheap s.it
[16:20:05] <OndraSter_> but hey, better to fix for $,9 than new for 20 times more :)
[16:20:13] <OndraSter_> not my repro ofc lol
[16:20:54] <OndraSter_> I have got two of these :P
[16:20:54] <OndraSter_> http://media0.iplace.cz/images/media0:4b4a679006e73.jpg/RS%20534.jpg
[16:23:06] <OndraSter_> aanyway, the funny thing is - even when you do not connect anything onto the input jack, there is about 200mV stable... and when you move around voltage level, it goes absolutely crazy to >700mV. And I said voltage level cable, not the input wire :o)
[16:23:24] <OndraSter_> desoldering the voltage level cable and putting there fixed resistors fixed it. so yes, problem solved
[16:23:33] <OndraSter_> gonna put there new pot
[16:24:03] <OndraSter_> and no, it is not the pot itself, it is somewhere inside the wire... but I ain't getting 6 wired cable that matches the rest of the stuff really
[16:24:19] <OndraSter_> who knows what it is - it might be even the input transformer that is running right next to the unshielded cable :P
[19:48:22] <chupas> yous till have to make header files in avr studio 5 right? it dosent generate them automaticaly or some form of magic like that
[19:52:48] <CapnKernel> What is this "make header files" of which you speak?
[19:53:38] <chupas> .h's
[20:02:37] <CapnKernel> System .h files, or your own?
[20:06:14] <chupas> my own. I think im answering my own question. Yes.
[20:06:29] <Tom_itx> you want it to write code for you too?
[20:07:38] <CapnKernel> Are you after something which gives you some boilerplate code?
[20:13:48] <w|zzy> We need a teddy bear in here for people to tell their problems to.
[20:15:05] <Tom_itx> we have theBear
[20:18:24] <theBear> there's no denying it
[20:20:52] <Tom_itx> you can try but you *are* theBear
[20:23:08] <chupas> i dont enjoy this visutal studio thing is all
[20:23:15] <chupas> i want to go back to avr4 :-(
[20:23:21] <chupas> this things like black magic
[20:23:42] <chupas> and IT SEEMS TO WRITE MORE CODE FOR ME THAN AVR STUDIO 4 DID. so i dont think its a silly question :-p
[20:28:26] <Tom_itx> use a txt editor
[20:28:41] <chupas> done and done
[20:39:07] <theBear> visual studio for avr ? this is a world gone topsy turvey
[20:39:38] <Tom_itx> you can say that
[20:39:46] <Tom_itx> that's what studio 5 and 5.1 are about
[20:40:01] <Tom_itx> 6 is on their workbench
[20:40:41] <chupas> their being... the old avrs4 style?
[20:41:02] <chupas> someone made it out like it was still vs to me
[20:41:53] <Tom_itx> no it is vs
[20:42:07] <Tom_itx> but going thru revs quickly it seems
[20:42:31] <chupas> oh, boo
[20:44:46] <w|zzy> Built on VS cant be worse than built on eclipse.
[20:45:22] <w|zzy> That was pitiful.. Havent used the latest much but 4 was where it was at.
[20:45:59] <Tom_itx> alot more overhead with visual studio
[20:48:09] <w|zzy> In what regards? Final rom size?
[20:48:21] <w|zzy> or just running the vs version?
[20:49:01] <Tom_itx> load time
[20:50:13] <w|zzy> Ahh.. Havent really used it.. Probably should give it a try so my opinions are at least somewhat valid.
[20:51:23] <Tom_itx> i just loaded it to test my programmers with it