lumberelite VS qmk_firmware

Other keyboards use a type of Arduino Pro Micro board which already contains all the necessary logic components. The advantage of using a pro micro is that they are cheap, easily replaceable and have a huge variety of choice including the colour, the connector type and even the central computing unit. So for example with a Corne keyboard, you could build it with a regular Arduino Pro Micro, or a RP2040 based Pro Micro for extra features and memory, or you could use a Nice!Nano Pro Micro and make it wireless! You can even hotswap between them to change between wired and wireless if needed. Here you can see a modification made by a fan where the Lumberjack is actually made to work with a Pro Micro!

Boardsource would be my first recommendation too. Unfortunately the case is often a problem (also for the Preonic). The lumberjack is a 5x12 ortho which can fit in any 60% case, but it also uses an onboard controller. There are some variations which use a pro micro and could also use a nice!nano, but you would need to order the PCBs yourself The lumberelite for example

Sure, I put the files up on Github here

I’m currently waiting for some Lumberelite pcb’s to deliver from JLCPCB, so I’ll take a stab at yours later on when I make the plunge for 5 pcb’s and somehow afford a case too

Custom made stacked acrylic case

Github repo

I only use keyboards running QMK or ZMK, so:

My Caps Lock key is a Control/Escape key (when tapped it behave like a Escape, when hold it's Control), and my left Control is a one shot layer switch key [1], which means I tap LCtrl once, and then press Caps Lock + 5 to get Ctrl+F5. Doable with single hand and more ergonomic as I have an unusually small hand.

[1] https://github.com/qmk/qmk_firmware/blob/master/docs/one_sho...

I agree that reduced finger movement is a crucial step in achieving typing efficiency. This is nicely solved by mod tap modifiers in QMK/ZMK[1] where key acts as a char when tapped and as a layer while pressed.

[1]: https://github.com/qmk/qmk_firmware/blob/master/docs/mod_tap...

Separate wireless controller, see the glue code at [0]

[0]: https://github.com/qmk/qmk_firmware/compare/master...nuphy-s...

If you have a keyboard that runs QMK firmware[0] with the VIA[1] feature enabled[2], then there is a convenient testing app available from the same place you customize your keys [3].

[0] https://qmk.fm/

I made a layout that I'm happy with. Spanish is my native language, so it has characters like the accents and 'ñ', but it's meant to be used for programming as well. Visual Studio uses a lot of Ctrl and Ctrl + Shift shortcuts, so I left them in the same place as the default Corne layout so I can press them both with my pinkie finger. Perhaps some of the ideas are useful to you.

Also, it would be possible to do this for the RP2040. However, it needs some work to get working. but for example: https://github.com/qmk/qmk_firmware/pull/20999

Ok, it's an ST7735, not too different from the ST7789. You should be able to get running by looking at their files in the QMK repo and going from there. You should also check their resources page.