github page for CFO: https://github.com/jsr606/CFO
assembly instructions for the CFO (fairly poor, sorry!): http://www.flickr.com/photos/kubapinkwiner/sets/72157625272800825/
github page for miniCFO: https://github.com/videomusik/miniCFO
assembly instructions for the miniCFO: download as .pdf
to program the CFO you need a USB to serial converter. something like this or this. alternatively you can program the chip on an arduino board and move the atmega chip to the CFO. or you can use an arduino board as the programmer.