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updated USBasp firmware
I'm updating and improving the original USBasp code.  The latest code on Thomas Fischl's site is 2011-05-28, without any updates in 3.5 years.   This code (...
Sun. Nov 23, 2014 - 12:07 AM
new scope - Rigol DS1054Z
After more than 30 years since I started tinkering with electronics, I'm buying my first scope - the Rigol DS1054Z.  It's on back-order everywhere I checked, but if all goes...
Thu. Nov 20, 2014 - 07:33 PM
Oshpark minimum dimension = .25"
I'm making a small breakout board, and my first version was only 230 mils wide.  I didn't realize that OshPark has a 250 mil minimum dimension, so I had to make it a tiny bit...
Sun. Nov 2, 2014 - 05:53 PM
gcc 4.9.2 released today
https://gcc.gnu.org/gcc-4.9/   Good incentive for me to go back and try again to get the gcc build script working!    
Thu. Oct 30, 2014 - 08:26 PM
Pro Minis now cheaper than bare Atmega328's from official distributors
Just noticed a seller on AliExpress is selling Pro Minis for $16.41 for 10 (12% off the regular 18.65 price). http://www.aliexpress.com/item/F... Only a year ago I couldn't find...
Thu. Oct 30, 2014 - 04:00 PM
Tiny85 best AVR for overclocking?
Besides Brad's work with the t85 as a heavily overclocked gaming platform, I've seen a number of other projects overclocking the t85. Overclocking the t85 is even done in...
Thu. Oct 16, 2014 - 05:09 PM
looking for SMD half-pitch pads
I'm using diptrace and am trying to make a breakout board for these modules: I don't know what the pads would be called.  I found half-pitch header holes, but I'm looking...
Wed. Oct 15, 2014 - 11:30 PM
help identifying nRF24l01+ compatible modules
I picked up a bunch of SMD nRF24l01+ modules off AliExpress.  They're definately not using Nordic nRF24l01+ chips, since they respond to the bank switch command (0x50, 0x53...
Wed. Oct 15, 2014 - 07:45 PM
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...
Wed. Sep 24, 2014 - 03:38 PM
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. ...
Sat. Sep 20, 2014 - 09:46 PM
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...
Thu. Sep 18, 2014 - 10:19 PM
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....
Thu. Sep 18, 2014 - 06:06 PM