Here, for example - https://github.com/sergev/mk-61#svn%2Ftrunk https://github.com/sergev/mk-61#svn%2Ftrunk . From http://ramlamyammambam.livejournal.com/266692

Here, for example - https://github.com/sergev/mk-61#svn%2Ftrunk https://github.com/sergev/mk-61#svn%2Ftrunk . From http://ramlamyammambam.livejournal.com/266692.html http://ramlamyammambam.livejournal.com/266692.html : "Everybody interested can reinstate the design. Here <the link above> are the sources. Will draw the schematics soon [see the link above, it has links to several blog posts]. The processor of PIC32MX2 family is chosen to simplify the assembly: it's the only 32 bit microcontroller in the world in the DIP body. And USB port isn't wasted: plans are to allow loading programs from computer. Boards, indicators, buttons, chips 74HC595N are easy to by on ebay.com"