It's been quite a while, but I have some updates to my project.

First, a big thanks to PCBWay for providing me with high-quality PCBs for this project!

I managed to put together a prototype keyboard that is significantly better than my first attempt. This time, I used Omron B3F-1052 switches, which are much better than the ones I used previously. Using the right PCB is also much easier than running thin wires on a prototype board.

I settled on a 5x5 key layout for each hand, which now seems optimal to me. I'm considering adding the missing functions using layers.

I continue to learn to type on this keyboard, and I can say that it feels pretty good in the hands. I was concerned that the clicking of the switches would be bothersome, but so far, this has not been an issue.

I also want to work on the keyboard layout. The classic "QWERTY" layout seems extremely suboptimal for typing with two thumbs. I aim to keep finger movements to a minimum and learn to touch-type on a new layout.

After soldering the switches to the board, I found that they hold up well on their own because their legs spring slightly in the mounting holes. This opens up the possibility for quick switch replacements, which is useful considering that branded switches are surprisingly expensive.

I also have some ideas on how to 3D print shoulder buttons.