#avr | Logs for 2014-06-18

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[00:42:53] <rue_more> hmm
[00:43:37] <rue_more> oakwhiz, is it linux? if so, you can ask what it knows
[00:43:51] <rue_more> if its windows it probably wont tellyou much
[01:18:33] <oakwhiz> rue_more: yeah it's linux
[05:13:12] <malinus> Jartza, btw. you should try out simply capturing screenshots directly from the scope trough usb :)
[10:37:33] <spillere> sharing a breakout board i just released http://www.danielandrade.net/2014/06/18/ad5204-digital-potentiometer-breakout-board/ :)
[10:54:43] <Tachyon`> are I2C and TWI the same thing?
[10:55:21] <aandrew> yes
[10:55:42] <aandrew> SMBus is also VERY similar but stipulates some additional bus cycles and timeouts
[10:57:31] <Tachyon`> ahh, thanks, not aware of SMBus but noticed TWI mentioned in the kernel documentation and thought it looked very like I2C, lol
[11:00:55] <aandrew> I2C is trademarked/copyrighted/something legal by Philips/NXP. TWI is the generic name
[11:13:03] <Tom_itx> yeah what he said.
[13:07:59] <Jartza> malinus: yes, I know of the screen capture, but I currently don't have free usb-ports :)
[13:08:25] <Jartza> easier to take photo with cellphone and share it directly to dropbox
[13:10:13] <Tom_itx> pfft
[13:10:15] <Tom_itx> get a hub
[13:11:11] <Jartza> I have
[13:11:13] <Jartza> 7 port hub
[13:11:20] <Jartza> I just ordered a 10 port one
[13:14:51] <Jartza> just too many usb-devices
[13:20:06] <Jartza> and just 2 days ago I found out that there is also a 28-port USB-hub, that would've been great :)
[13:20:38] <Jartza> but I guess I just have to live with 17 ports for now ;)
[13:22:28] <Jartza> http://www.reichelt.com/USB-Hubs/MAN-161718/3/index.html?&ACTION=3&LA=2&ARTICLE=120369&GROUPID=6103&artnr=MAN+161718
[13:22:34] <Jartza> if anyone needs one
[13:35:52] <malinus> Jartza, that's 1/3 of the price of the hantek scope ;P
[14:31:34] <twnqx> build it yourself!
[14:31:40] <twnqx> with free samples!
[18:47:31] <Lambda_Aurigae> http://hackaday.com/2014/06/18/i2c-from-your-vga-port/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29
[18:48:12] <aandrew> Lambda_Aurigae: yeah, that's just using the DCC lines
[18:48:15] <aandrew> which is just an I2c port :-)
[18:48:21] <aandrew> DDC not DCC
[18:48:22] <Lambda_Aurigae> yup.
[18:48:32] <Lambda_Aurigae> avr programmer from your VGA port!
[19:22:33] <Lambda_Aurigae> rue_more, got a new project for you....build an AVR programmer using the VGA video lines.
[19:23:12] <Lambda_Aurigae> by changing the output color, you should be able to toggle the R, B, and G lines.
[19:33:14] <Tom_itx> what a silly idea
[19:33:48] <Tom_itx> he was able to fake avrdude into thinking the isa buss was a programmer
[19:33:57] <Tom_itx> kinda neat
[19:39:16] <Lambda_Aurigae> Tom_itx, the isa bus? I thought it was the ide port..
[19:39:31] <Tom_itx> no pretty sure it was isa
[19:39:37] <Tom_itx> it made it to hackaday
[19:39:51] <Lambda_Aurigae> that was the ide port.
[19:39:56] <Lambda_Aurigae> I duplicated it once.
[19:39:57] <Tom_itx> oh
[19:41:53] <Tom_itx> did you see his brainfuck project too?
[19:42:00] <Lambda_Aurigae> yeah.
[19:42:12] <Tom_itx> http://hackaday.com/2013/02/27/interpreting-brainfk-on-an-avr/
[19:49:06] <Tom_itx> can't seem to find his programmer
[19:52:33] <Lambda_Aurigae> http://hackaday.com/2011/02/03/stk200-pocket-change-programmer/
[19:52:41] <Lambda_Aurigae> http://forbharat.wordpress.com/2011/02/04/avr-programmer-isp-stk200-using-old-pc-hard-disk-pata-port/
[19:53:23] <Lambda_Aurigae> the original is offline thanks to dyndns dropping their free accounts.
[19:53:34] <Tom_itx> he may have moved it
[19:53:47] <Tom_itx> http://ruemohr.org/~ircjunk/
[19:53:52] <Tom_itx> didn't find it there yet
[19:54:42] <Lambda_Aurigae> http://ruemohr.org/~ircjunk/tutorials/elex/ata2isp/
[19:56:19] <Tom_itx> we've been thru a few programmers
[19:56:39] <Tom_itx> started with the parport things
[19:56:51] <Tom_itx> then made some software usb ones
[19:56:58] <Tom_itx> then the lufa ones
[19:57:45] <Lambda_Aurigae> yup.
[19:57:58] <Tom_itx> http://tom-itx.no-ip.biz:81/~webpage/boards/prog/prog_batch.jpg
[19:57:58] <Lambda_Aurigae> I have one of rue's early parallel port dongle programmer boards.
[19:58:02] <Tom_itx> i made a bunch of those
[19:58:06] <Tom_itx> still have a few
[19:58:06] <Lambda_Aurigae> it fits in a db25 hood.
[19:58:19] <Tom_itx> yeah i have one
[19:58:24] <Tom_itx> or two
[19:58:28] <Tom_itx> or three...
[19:58:44] <Tom_itx> then i made a bunch of rs232 adapters
[19:59:11] <Tom_itx> http://tom-itx.no-ip.biz:81/~webpage/misc_stuff/rs232_2.jpg
[19:59:29] <Tom_itx> that was way before LUFA
[19:59:40] <Lambda_Aurigae> yeah.
[20:00:00] <Tom_itx> i recall mentions of puff
[20:00:55] <Lambda_Aurigae> a real ass from what I hear.
[20:05:17] <rue_more> Lambda_Aurigae, really? thats all?
[20:05:37] <Lambda_Aurigae> hehe.
[20:05:40] <rue_more> i2c io exapander, "done!" :)
[20:06:01] <Lambda_Aurigae> pcf8574 for the win!
[20:06:28] <rue_more> :)
[20:07:26] <Lambda_Aurigae> [:
[21:09:05] <rue_more> Lambda_Aurigae, ... want a subdomain of ruemohr.org?
[21:09:19] <rue_more> I think they are free to me...
[21:09:50] <rue_more> its not dyn...
[21:10:11] <rue_more> *sigh* I'm tired...
[22:06:04] <umquant_> has anyone here worked on systems that have done real time data logging to some remote location? (i.e. not to an sd card but to an API or db)
[22:07:03] <hackvana> Yes
[22:08:37] <hackvana> It is quite easy to log data to sites that will keep sensor data for you, like this one: http://en.wikipedia.org/wiki/Xively
[22:08:44] <umquant_> hackvana: how much data and on what interval? What did the receiving end look like?
[22:09:00] <hackvana> We were sending a temperature reading about every minute
[22:09:14] <umquant_> hackvana: I have implemented a web API and the protocol but am stuck on choosing a database
[22:10:02] <hackvana> It was for brewing beer in a tropical climate. We had an insulated box we were keeping it cold by loading it with ice. With Pachube (now Xively) we could watch a graph of the temperature from anywhere, and know when the ice had melted (means, time to add more ice)
[22:10:26] <umquant_> ah okay cool.
[22:10:32] <hackvana> Using a service like xively means you don't have to store data, ever.
[22:10:41] <hackvana> That's their job. And they give you nice graphs and stuff.
[22:10:49] <hackvana> The API is quite easy to use.
[22:11:36] <umquant_> Right. We want to keep it in house. We do API development and UI/web applications. I was just curious to see if anyone had any suggestions for a db
[22:11:52] <umquant_> we are logging now with mysql but were thinking about going to mongodb
[22:13:48] <hackvana> There are tools that are designed to store sensor data. RRDtool is one: http://en.wikipedia.org/wiki/RRDtool
[22:14:24] <umquant_> awesome. I will take a look at it.
[22:14:40] <umquant_> how many units did you sell for the temp logging thing?
[22:16:27] <hackvana> I think you're making an assumption there.
[22:16:47] <hackvana> Please read what I said about our application.
[22:20:11] <umquant_> what assumption?