#avr | Logs for 2015-11-17

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[04:45:55] <apo_> twnqx: not /everywhere/
[04:46:09] <twnqx> i noticed you _here_ before
[04:46:20] <apo_> ;)
[09:10:17] <wasutton3> does the ATMega32U4 not actually have ADC2 and ADC3 pins? If im reading this right, it just goes 0,1,4,5,6,7,8...13
[09:12:52] <LeoNerd> Correc
[09:13:03] <LeoNerd> AVR pinouts are quite often fairly discontiguous
[09:13:10] <LeoNerd> I'm never quite sure why. the 32U4 in particular is most most weird
[09:13:30] <wasutton3> ah ok.
[09:13:47] <wasutton3> because the pdf looks all cut off to me and i was worried i missed something important
[09:14:57] <LeoNerd> What's even *more* annoying about the 32U4 is that aside from Adafruit's nice but expensive one, I don't think there are *any* breadboard breakout boards for it
[09:15:19] <LeoNerd> All the others are Arduino Micro shaped things. These do use a 32U4 chip but omit many of the IO pins
[09:15:32] <LeoNerd> The only pins they bring out are enough to make a Mini/Nano-compatible shape. It misses quite a few
[09:16:52] <wasutton3> yea, ive been seeing that.
[09:17:01] <wasutton3> I really just need the boatload of ADC pins for my application
[09:18:26] <LeoNerd> Some of the AVRs go up to about 12 pins
[09:18:43] <LeoNerd> If you wanted any more than that you might consider a dedicated I²C or SPI-connected ADC module , or several
[09:20:41] <wasutton3> right. the 32u4 goes has 12, i think the 16u4 does too
[14:06:15] <Chillum> I know how to use the watchdog to reset the MCU if it fails to respond, but is there a way to recognize that the current startup is due to the watchdog?
[14:06:58] <Chillum> using a atmega328
[14:48:34] <Xark> Chillum: Hmm, I think there is a bit that tells you that, but I remember reading the bootloader clears it before you get a chance (if you have a bootloader).
[14:49:28] <Chillum> thanks
[14:50:40] <Xark> Yeah, power on flag and brown-out flag...
[15:07:41] <Jartza> evening
[15:19:08] <sebus> Good evening
[15:19:17] * sebus back from work
[15:58:19] <LeoNerd> So it seems whenever I buy solder I have about a 50/50 chance of it being good, or terrible.. I can't seem to work out any correlating factors though
[15:58:48] <LeoNerd> This latest reel is absolutely awful.. it doesn't really melt properly
[15:58:54] <LeoNerd> It doesn't stick wires to pins...
[16:15:19] <RikusW> add some flux
[16:16:09] <RikusW> LeoNerd: oxidation tends to do that
[16:17:02] <sebus> ye, flux once I bought 0,5kg of 0,5mm solder. No flux in it at all so without additional solder paste it doesnt work well...
[16:17:33] <RikusW> I have a bottle of flux agent, basically rosin in propanol
[16:18:18] <RikusW> I apply it using a syringe and thick needle
[16:18:57] <sebus> depends on what I am soldering, i use either cheapest solder paste or some flux for hot-air rework.
[16:19:36] <sebus> second is better, but way more expensive :S
[16:19:50] <RikusW> I've even soldered big joints, like those for heatsinks, using old solder and flux
[16:19:57] <RikusW> (solder sucked solder)
[16:20:32] <LeoNerd> This is almost new solder...
[16:20:47] <LeoNerd> Hrm. well, new to me. I suppose I don't know how long it's been sat in a warehouse
[16:20:51] <RikusW> I've gotten 250ml of flux agent for like 4 Euros
[16:21:14] <RikusW> and it lasts for ages
[16:21:44] <RikusW> my bottle is half by now, and its been a few years
[16:29:56] <Jartza> allo
[16:30:16] <wasutton3> allo
[16:30:21] <Jartza> wassup?
[16:35:21] <wasutton3> not much. just coasting on the high of curb stomping the GRE
[16:39:50] <LeoNerd> Oops. Amusing typoes
[16:40:00] <LeoNerd> I'm now looking on ebay for a resistance decade ox
[17:02:30] <Jartza> looking for... what? :)