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managing different target builds
I'm not very fond of the Arduino IDE, and do most of my development with vim & makefiles.  One thing the Arduino IDE does that I'm finding a bit difficult to duplicate...
Wednesday, 24 September 2014 - 15:38
exact dimensions of square header pins and pcb holes
"square" header pins are .64mm on a side.  If the corners were not rounded, they would be .905mm on the diagonal, and would require at least a 36 mil hole in a PCB. ...
Saturday, 20 September 2014 - 21:46
is EE_RDY the least-used interrupt?
I've nearly finished writing a stk-500 compatible bootloader for devices with a BOOTRST fuse.  I'm thinking of adding support for attiny devices, which requires saving the...
Thursday, 18 September 2014 - 22:19
origins of 63 mil PCB thickness
Came across this article that says it originates from 1/16" plywood. http://speedingedge.com/PDF-File...   Strangely, the author is not too good at math.  63 mil = 1....
Thursday, 18 September 2014 - 18:06
anyone know what CD11X means?
I picked up some 100uF/16V electrolytic caps that are labeled CD11X.  Anyone know what the numbers mean.  Googling it comes up with datasheets from a couple different...
Friday, 12 September 2014 - 22:55
low power options for running off a coin cell
I'm making low-power wireless sensors that run off a coin cell, and am trying to reduce their power consumption.  I've got t88's and t84's waking up from a watchdog, with...
Sunday, 7 September 2014 - 22:41
more than 3 brown-out levels?
I am setting brown-out detection on a tiny84a, and according to the datasheet rev 8183F–AVR–06/12, there are 3 valid levels.  Settings 0XX are listed as reserved. Rather than...
Saturday, 6 September 2014 - 22:05
generic 7-segment display library?
I've been searching for a generic (i.e. no restrictions on pin mappings) 7-segment library. I found one in the project section and another I found from a post a couple years back...
Monday, 1 September 2014 - 18:30
submitting avr-gcc bugs
Is there a way to submit bugs for avr-gcc similar to the avr-libc bug submission form? I just found a bug with lto in 4.8.x. Enabling lto breaks the .initN sections. i.e....
Wednesday, 20 August 2014 - 16:06
portable temperature measurement?
I'm looking for a portable way to read the internal temperature sensor on AVRs. avr-libc doesn't define anything for the ADMUX settings for the internal temperature sensor. The...
Tuesday, 19 August 2014 - 20:51
picobootSTK500 pre-alpha: < 256-byte STK500 compatible
I'm almost ready to start testing picobootSTK500, and would welcome code reviews to point out any bugs I may have missed thus far. https://code.google.com/p/picobo... Code size is...
Sunday, 10 August 2014 - 03:49
inline assembler problem
I'm trying to figure out avr-gcc inline assembler (and cursing my way through it...) $ make inlineasm.o avr-gcc -mmcu=attiny88 -DF_CPU=8000000 -Os -Wall -flto -Wno-main -c -o...
Saturday, 9 August 2014 - 04:17

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