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Category Archives: electronics

sparkfun quadstep driver refactor

i bought a quadstep from sparkfun to run stepper motors. the supplied arduino driver did a good job of showing the quadsteps functionality is free was limited to the arduino mega had hardcoded pins could use some cleanup   i have also been reading clean code: a handbook of agile software craftsmanship by robert martin […]

new computer ubuntu 11.10 (oneiric ocelot) install

i finally purchased a new computer. my how how things change. last time around an atx power supply was an atx power supply. this time i researched enough to know i needed a 20+4 main supply plug. i failed to research the 4+4 cpu power supply plug and as a result i had to purchase […]

openrave install on ubuntu 9.04

first go earlier this week i unsuccessfully tried to install it. there were no directions for 9.04 on the wiki. using the directions for 8.10 the build failed: [ 96%] Building CXX object plugins/qtcoinrave/CMakeFiles/qtcoinrave.dir/aviUtil.o openrave/plugins/qtcoinrave/aviUtil.cpp:456:29: error: ffmpeg/avformat.h: No such file or directory openrave/plugins/qtcoinrave/aviUtil.cpp:457:28: error: ffmpeg/avcodec.h: No such file or directory second go The wiki was […]

ghetto reflow banana bread

solder reflowing is the method used to attach tiny surface mount chips to circuit boards. when this method is done properly it is very technical. i guess and do it while making banana bread. my little sister’s Compaq Presario V3000 exhibited a common problem. if moved while operating it would crash, freeze or reset. eventually […]