The trackball is an often-mocked sibling to the mouse, but it has a core base of passionate users fed up with the offerings from major manufacturers who have started building their own.
Ploopy Trackball modifications
Adept Trackball (Print-It-Yourself Kit) - Ploopy
Ploopy and the promise of an open-source trackball - The Verge
Ploopy Trackball Kit Assembly, Revision D · ploopyco/classic-trackball Wiki · GitHub
Ploopy Trackball Kit Assembly, Revision D · ploopyco/classic-trackball Wiki · GitHub
Building and modding the Ploopy trackball - The Verge
Ploopy Trackball modifications
Ploopy Trackball modifications
Ploopy Trackball modifications
ploopy (@ploopyco) / X
Here's a 3D-printable Ploopy trackball mod to use ball transfer units! : r/ ploopy
Building and modding the Ploopy trackball - The Verge
Ploopy Classic Trackball (Revision D) [Detailed Build Guide + Sound Test]
Ploopy Trackball modifications