Mini Arcade Trackball

3D Printable mini arcade trackball for use with your favorite emulators and DIY projects. Intended for trackball style arcade games, which typically have 3 buttons on the left side of the trackball.

See https://github.com/dekkit/Mini-Arcade-Trackball for latest information, further printing instructions, and examples.

This small size and 3 button layout is ideal for classic trackball arcade games like Missile Command, Marble Madness, Golden Tee, and various bowling games etc. Using a slightly curved top to make it much more comfortable to rest your palms on and play on.

Most cheap arcade trackballs found on online marketplaces (for approx. $25-35) use a PS/2 connector which can be easily converted to usb with a cheap ps/2 to usb converter (approx. $5). When plugged into a PC, these trackball function as a 3 button mouse. Sensitivity can be customised further in the operating system and each of the 3 buttons can be mapped within your emulator (e.g. MAME etc).

I've adapted my p