Link: https://www.techpowerup.com/352195/modder-creates-affordable-open-source-hall-effect-split-ergonomic-keyboard

Aside from the pricey ASUS ROG Falcata and Sunder keyboard line-up, there are very few split, ergonomic, Hall effect keyboards for gamers who either want the comfort of a split keyboard for everyday use or want a small form factor that allows them to keep just one half of the keyboard on the desk at a time. Now, thanks to a new open-source project, there is at least one third option available in the Silakka54 HE project, which is an adapted version of the popular, affordable Silakka54 split mechanical keyboard.

Repo: https://github.com/Hanthebot/silakka54-HE

I have been using a manuform dactyl (with trackball) for like 5 years, and I make a new one each year (just trying out new switches and tech/resins). I dont know if I would like the whole hall effect feeling, I love to bottom out my switches so I dont think these are for me, but grats on this person getting them working and into the qmk firmware.

But if you wanna make this, and have access to a 3d printer and wanna hand solder, dactyl manuform script is out there (gives you all kinds of options of rows, colums, and other options) look into this.