My subreddits are: http://old.reddit.com/user/diydsp/m/digi_instruments http://old.reddit.com/r/diydsp http://old.reddit.com/r/diyinstruments http://old.reddit.com/r/stm32f4
http://diydsp.blogspot.com is my blog on digital instrument design.
http://exertion.pbworks.com has info on building hybrid generator instruments.
The last really good archive of my main website: https://web.archive.org/web/20190406043521/http://diydsp.com/livesite