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| http://www.ladyada.net/learn/arduino/ - a small inexpensive microcontroller http://www.instructables.com/id/Charlieplexing-LEDs--The-theory/ - how to multiplex many LED's using a few output pins http://www.arduino.cc/en/Tutorial/ShiftOut - using a shift register to drive LED's \ No newline at end of file | ||||||||
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http://geda.seul.org/ - suite of Free Software EDA tools http://www.cyclerecorder.org/blog/20070609 - a homebrew data collector; also a good intro to homebrew circuit boards. | |||||||
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