Hello everyone! I recently open sourced the Kaly42, a cheap split Ergonomic Mechanical Keyboard and, to celebrate the occasion, have decided to tell the story of how I went from a standard mechanical keyboard to the CSTC40 and eventually to designing and building a new keyboard! The files are available here and the video here! If any of that interests you, please check them out, it would mean a lot to me!
Sadly, to make a version like that, the cost (mostly of the switches and keycaps) would go up and you would need to add diodes to the build and config files. I don’t wish to deal with that currently, so sadly that project has been put on hold. (see my reply to the other comment too!) However, the Kaly42 is indeed cheap, if you source the parts well it can come in at about 50$!
ps: Thanks for the kind words!