Post Created date
BGA soldering
I've used a hot plate with pretty good success to solder BGAs. I've also seen low pin count BGAs (9 pins) done with hot air. Really depends on what you need to do...
Mon. Jan 13, 2014 - 02:05 AM
Pen to mark IC chips
I've used white-out pens in the past. They normally are a little clumpy, so you have to write bigger than normal. But otherwise they work ok on many surfaces.
Mon. Dec 16, 2013 - 12:40 AM
Dead Parts + PCBs for Soldering Practice
I wonder if computer repair places would have a pile of scrap? Or do some dumpster diving?
Thu. Dec 12, 2013 - 09:15 PM
re-compiling code took sleep I from 2.5ua to 120ua...
Here is another strange data point: I tried turning off everything in the PRR - so I wrote 0xFF to PRR, and then I slept. That should disable the 32K interrupt that is waking me...
Mon. Dec 9, 2013 - 01:46 AM
problem with measuring Li-ion battery capacity
KitCarlson wrote:A new battery needs a few cycles to develop full energy. Complete discharge is detrimental. For long life, the charge, discharge is kept in 60 to 40 percent range...
Sat. Dec 7, 2013 - 07:53 PM
re-compiling code took sleep I from 2.5ua to 120ua...
I have changed my main to look like this: int main (void) { init(); //configure peripherals while(1) { PORTC ^= 1<<PORTC0; if (CurrentMode...
Tue. Dec 3, 2013 - 03:03 AM
re-compiling code took sleep I from 2.5ua to 120ua...
I have the sleep command in a while(1) loop - is there any chance that that is getting optimized away? It looks like this: int main (void) { init(); //configure peripherals...
Tue. Dec 3, 2013 - 12:28 AM
re-compiling code took sleep I from 2.5ua to 120ua...
kk6gm wrote:nleahcim wrote:kk6gm wrote:This is a really good argument for using version control, so you could go back and check the differences in the output files. Not to beat up...
Wed. Nov 27, 2013 - 06:12 PM
re-compiling code took sleep I from 2.5ua to 120ua...
OK here is an interesting update. The debug version of the code pulls 120ua or so. The release version of the code pulls 600ua or so. Anybody got any theories here? I have not had...
Wed. Nov 27, 2013 - 06:02 PM
re-compiling code took sleep I from 2.5ua to 120ua...
clawson wrote:Quote: The hex file shrank considerably (46.3% usage to 29.0% usage), so that's a good sign. What were the -O setting in "Debug" and "Release". It sounds like the...
Wed. Nov 27, 2013 - 03:53 PM
re-compiling code took sleep I from 2.5ua to 120ua...
Torby wrote:Perhaps unrelated, but I've found sleep mode current varies a lot based on what you do with unused pins. I now set them to output and low. I have all of mine set to...
Wed. Nov 27, 2013 - 03:42 PM
re-compiling code took sleep I from 2.5ua to 120ua...
This may not be important, but I get this error message when I open the project: "23:17:51: [WARNING] The device [atmega168p] is not supported in ASF Version [3.1.3] that is used...
Wed. Nov 27, 2013 - 07:19 AM

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