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[00:04:02] <N1njVacation> See you all in a week!
[00:04:33] * Casper steals N1njVacation's airplane tickets
[00:12:44] <N1njVacation> I need those!
[00:14:12] <Casper> ... tuesday.... 5-10cm of snow... already...
[00:14:21] <Casper> want to come here for your vacations? :D
[00:14:38] <Thrashbarg> yes.. we're entering summer here
[00:15:49] <Casper> but atleast I do have my winter tires on my car
[00:15:52] <Casper> so I'm ready
[00:15:53] <Casper> well
[00:15:55] <Casper> not quite...
[00:16:07] <Casper> I still have summer windshield washer fluid...
[00:16:25] <Casper> need to possibly drain/waste it before then...
[00:18:03] <N1njVacation> I'll be sailing around the Carribean, drunk, on a cruise shit. :)
[00:18:08] <N1njVacation> Er SHIP
[00:18:10] <N1njVacation> lol
[00:18:36] <N1njVacation> Been here and awake far too long, gotta go home and pack, and still submit out a PCB for fab once I finish routing it. X.x
[00:18:39] <Casper> you mean you'll be sick around the carribean?<
[00:19:00] <N1njVacation> Anything is possible.
[00:20:59] <Casper> http://www.abristempo.com/Produit-2-Abri_Monopente <=== I might get that next year...
[00:21:23] <Casper> but not sure it actually fit here...
[07:56:13] <MarkX> how do you guys decide between surface mount and thru hole components?
[08:01:41] <antto> flip coin
[08:02:11] * antto hides
[08:03:44] <Santh> Board size, part count, soldering skills and part package availability
[08:04:29] <Lambda_Aurigae> I only use surface mount when someone else gets to solder them on.
[08:07:54] <MarkX> ah cool
[08:10:15] <Lambda_Aurigae> but, most of what I build gets torn down and built into something else next week.
[08:10:25] <Lambda_Aurigae> I do a lot of solderless breadboard work.
[08:18:19] <MarkX> cool
[08:19:36] <Lambda_Aurigae> limits my speeds but I don't need that much.
[08:19:47] <Lambda_Aurigae> I've gotten 40 an 50 MHz stable with a little work.
[09:39:03] <MarkX> hmm
[09:39:14] <MarkX> can someone help me decipher this circuit please >>
http://arduino.cc/en/uploads/Main/Arduino-Fio-schematic.pdf <<
[09:39:29] <MarkX> the part that is confusing me is the bottom left where a MAX1555 is used
[09:40:10] <MarkX> i'm assuming JP6 gets a lipo battery. So why is USB_VIN used there rather than VBATT
[09:47:07] <Tom_itx> you should ask the author
[09:47:09] <specing> JP means jumper
[09:47:37] <MarkX> oh
[09:47:39] <Tom_itx> vbatt comes in pin 5
[09:48:01] <specing> also shouldn't you be asking this on #arduino?
[09:48:20] <Tom_itx> yeah i'm not awake enough to deal with arduino yet
[09:48:36] <MarkX> sorry
[09:48:39] <MarkX> i'll head there now
[09:48:56] <MarkX> i figured it was more of an electronics schematic question than arduino related :P
[09:49:05] <Tom_itx> Jordan_U are you ever coming back here?
[09:49:22] <Tom_itx> MarkX it may be but it says 'arduino' :D
[09:49:30] * Tom_itx shudders
[09:49:31] <MarkX> hehe
[09:49:37] <MarkX> i understand :)
[09:50:12] <Tom_itx> i would say it uses usb power until it fails then switches to vbatt
[09:50:17] <Tom_itx> that is a guess
[09:50:19] <Tom_itx> not a fact
[09:50:34] <Tom_itx> see what the function of the max chip is
[09:52:09] <MarkX> uggghh
[09:52:28] <hypermagic> hello my friends
[09:52:30] <MarkX> some schematics are amazing
[09:52:35] <MarkX> and so easy to follow
[09:52:45] <MarkX> and then there's this
[09:52:45] <MarkX> XD
[09:52:48] <MarkX> hi hypermagic
[09:53:24] <hypermagic> dammit i tried to simulate a simple circuit in ltspice iv and it tells me that the singular matrix is bad
[09:53:45] <Tom_itx> simulate it on a breadboard
[09:53:51] <hypermagic> good idea ;)
[09:53:55] <Tom_itx> you get more realistic results
[09:54:01] <Tom_itx> smoke or magic
[09:54:40] <MarkX> lol
[09:55:19] <hypermagic> i have also noticed that if i make a lowpass/highpass filter using 2 opamps it takes about 3 hours and 3GB of swap space for ltspice to simulate a 3 minute wav file input on a supercomputer, but if i breadboard that lm358 filter i can inspect it real-time...
[09:56:43] <hypermagic> that lm358 has some "compuatation power" eh? ;)
[10:17:00] <learath> computers are bad at analog
[10:17:27] <hypermagic> pc is bad in computing :)
[10:55:46] <MarkX> i still don't understand decoupling caps. I was hoping maybe someone could help me with that?
[10:56:16] <hypermagic> sure
[10:56:50] <hypermagic> it is a capacitor that stores charge between 2 conducting surfaces that are separated with a dielectric insulator
[10:57:14] <MarkX> so i'm referencing 2 schematics which basically do the same thing: breakout board for atmega32u4. >>
http://dlnmh9ip6v2uc.cloudfront.net/datasheets/Dev/AVR/32U4_Breakout-v11.pdf << and >>
http://www.embeddedwirelesssolutions.com/schematics/ews_atmega32u4_breakout_board.png <<
[10:57:33] <hypermagic> it has a reactance of Xc= 1 / ( 2 * Pi * f * C )
[10:58:18] <hypermagic> it has an ESR that is equivalent series resistance that equals a resistance placed in series with an ideal capacitor
[10:59:13] <MarkX> both use decoupling caps between VCC pins and GND. But here is where my confusion is. If the caps just go between VCC and GND, do they need to be connected to the VCC pin at on the chips?
[10:59:28] <MarkX> or can they be on the other side of the board, just going between VCC and GND rails?
[10:59:44] <hypermagic> best is to place it between the vcc and gnd pins
[10:59:52] <hypermagic> because of track inductance and resistance.
[11:00:08] <hypermagic> you place at least a 100nf ceramic capcitor from vcc to gnd pins
[11:00:31] <hypermagic> this will arrest high frequency noise from entering the chip
[11:00:55] <MarkX> so the VCC pins go to (say) a vcc rail, GND pins go to (again) GND rail
[11:01:11] <MarkX> and parallel to the VCC pin, there is a cap that goes to GND?
[11:02:01] <MarkX> Doesn't that just mean there is a cap between VCC rail and GND rail? What difference does it make if its near a physical pin or on the other side of the board?
[11:02:06] <hypermagic> capacitor has 2 pins, connect one to vcc of mcu, other to vss of mcu
[11:02:27] <hypermagic> this is the minimum decoupling you must give it
[11:02:49] <hypermagic> additionally you can use 1-10u or larger caps elsewhere.
[11:17:36] <hypermagic> a transistor buck regulator testing.
http://tinypic.com/view.php?pic=2iig1oi&s=8
[17:15:42] <CluelessPerson> Hey guys
[17:16:10] <CluelessPerson> Does anyone know of any good WIFI or ethernet modules that can be easily interchanged/inserted into a microcontroller project?
[17:16:18] <CluelessPerson> for potential mass production even later?
[17:16:48] <gjm> ESP2866?
[17:17:18] <CluelessPerson> gjm: I'm actually looking at that as a serious option now. :) However that is UART, will that work with the atmega328p nicely?
[17:17:41] <gjm> Why not?
[17:29:50] <Lambda_Aurigae> uart---serial--3.3V TTL interface.
[17:30:03] <Lambda_Aurigae> it's much more than that but by default that is what it plays like..
[17:30:26] <Lambda_Aurigae> AT command set for setting up the wifi connection and simplish data throughput.
