Charybdis VS trackball

I am using https://github.com/Bastardkb/Charybdis/tree/main/files/mods/tenting-stand-with-wrist-pads With the Gelpads from Ali. And are quite happy with them. Interestingly do they change after a while and don’t snap to each others, but that’s not a problem.

yep what he said. check this out https://github.com/Bastardkb/Charybdis/blob/main/files/mods/readme.md

I started my split journey by building a dactyl manuform with amoeba king pcbs. Now I use a charybdis nano because it has an integrated trackball :D

I use a Bastard Keyboard Charybdis Nano. It's an ergo 3x5 keyboard with built in trackball. I built it myself but you can get them pre built too.

https://github.com/Bastardkb/Charybdis

Keyboard - Charybdis - https://bastardkb.com/charybdis/ - Original post: https://www.reddit.com/r/MechanicalKeyboards/comments/x8pq5k/first_build_charybdis_mods_btu_millmax_whirst/ and stands I designed - https://github.com/Bastardkb/Charybdis/tree/main/files/mods/tenting-stand-with-wrist-pads

Most of my free time is spent researching and engineering for various open source projects. I also enjoy building custom keyboards, right now I'm rocking a Bastard Keyboards Charybdis that I hand built myself. Fun facts: I'm left handed and used to train and ride horses competitively.

Stumbled upon this keyboard while searching for Dactyl Manuform pcbs. Thought I'd share it here as well.. Also its open source : https://github.com/Bastardkb/charybdis Bastardkb website : https://bastardkb.com/charybdis/

The design is not mine to share, but it is fully open source -- one of the reasons I really respect bastardkb and wanted to build this board. You can find the files (and license) on the bastardkb github.

I did lay out a simple carrier board as a direct replacement for the breadboard in a more permanent build, and had a few of them made up through OshPark. It's really basic -- no components, just some traces and solder pads. (My first time trying to use kicad, I think it turned out decent for what it is.)

not quite sure what you are getting at... regarding thumb use, you can always buy used FXes (or new ones if you want a crazy markup). if you want something slightly more modern, there is the cordless FX. the DIY trackball you speak of is publicly available here: https://github.com/monroewilliams/trackball

isnt a scan, but its a 3d printable trackball with roughly similar shape: https://github.com/monroewilliams/trackball

For me, the hand position used with the Logitech Trackman Marble FX was near perfect for reducing hand and wrist stress. Unfortunately that model was discontinued many years ago, and they're now hard to find, expensive, and generally antiquated (PS/2 interface, dodgy early optical sensor, no scroll wheel). This was the main reason I designed and built my own trackball. Its shape was inspired by the Marble FX, although I modeled it from scratch in OpenSCAD.

Of course. 😎

Sources for all the parts I used are listed here, and there's a fairly extensive assembly guide with pictures here.

For my scratch-built trackball project, I used these breakout boards, and based my initial code off of the seller's sample code. His sample is for Arduino. but it's basically pretty straightforward C code that isn't hard to adapt to any microcontroller. For my purposes I needed to run two of the sensors off one microcontroller, so I turned into a C++ class that runs one sensor per instance, and supports a couple different related sensors (ADNS9800 and PMW3360).

The ball-spin mousewheel is a really nice touch, too