Ergodox-ez.com sure make a big deal about being 'open source', yet I can't find a schematic, PCB design or anything related to this on their site. Perhaps I'm m

Ergodox-ez.com sure make a big deal about being 'open source', yet I can't find a schematic, PCB design or anything related to this on their site. Perhaps I'm missing something? What I do see is they use an open source firmware, used on several other keyboards.