Keyboard Builders' Digest
Save 5% at Ashkeebs! Code: KBDNEWS [all coupons]
Keyboard Builders' Digest / Projects

OpenEx trackball

OpenEx is an open-source QMK-powered trackball by u/Skribbles4420 – inspired by the Kensington Expert.

KBD.news
Published June 24, 2022

Not a keyboard but maybe another useful companion: OpenEx is an open-source trackball designed by Skribbles4420.

OpenEx was an idea that came to me while searching around for various types of trackballs one evening. I saw of course the Kensington Expert and was immediately inspired to create a trackball device that was emulative of what I had discovered.

The wiring for all the switches and other components to the microcontroller is all done by hand but in the next revision the author plans on designing the PCB with the sensor circuit integrated as well.

The sensor that is currently being used is that of BastardKb (pmw3360):

https://github.com/Bastardkb/Charybdis

So I downloaded the Gerber files from his GitHub, then had them produced at JLCPCB, then ordered the components for the sensor from mouser and Ali express, then put it all together.

GitHub repo: https://github.com/Skycode22/HIDs/tree/main/OpenEx

Published on Fri 24th Jun 2022. Featured in KBD #84 (source).


Did you like reading this post?

Donate to keep this project alive


Related

CDS Topre

A Japanese Topre board manufactured by CDS with an interesting layout – posted by May_1.

Ploopy Nano design files released

The design files of the Ploopy Nano Trackball by crop_octagon are officially released (git).

Self-contained trackball

All the electronics is hidden inside this trackball by Jacek FedoryƄski (video, git, blog post). (Posted by deekue.)

Noisy Cricket keyboard

The Noisy Cricket by u/Pop-X- was heavily inspired by Thomas Baart's Kyria and the Ferris.

Sony BKE-9400A

Cipulot posted some photos of his latest find: an electro-capacitive Sony BKE-9400A.

Kyria with pimoroni trackball

A Kyria with pimoroni trackball and 3D printed tented case by UghThatsTheWorst.

×