The PrintBall is a graffiti Robot. It works like a giant Ink-Jet printer, using a PaintBall Gun as the print-head. The PaintBall gun is mounted on a custom made pan & tilt unit, which is controlled by software programmed with Max/Msp: PrintWare 6.0 (G.M.L compatible). The pan & tilt is controlled by an Atmel chip [programmed in Basic]. This software guides the movement of the two stepper motors and triggers the PaintBall Gun. The software allows users to load, analyze and shoot images. The resolution of the image can be adjusted according to the number of steps between each point.

The PrintBall is based on a concept by Geraud de Bizien and Benjamin Gaulon. Hardware and Software by Recyclism. Built between 2004 and 2005 with the support of Lourens Rozema.

Using the Graffiti Markup Language (GML) the PrintBall, a Graffiti Robot made of a PaintBall Gun and a custom made Pan&Tilt Unit controlled by a Max/Msp based software, was able to shoot a Graffiti created by TEMPT on the EyeWriter (ref. temptTag-2009_9_2_1_46_18).

The EyeWriter project is an ongoing collaborative research effort to empower people who are suffering from ALS with creative technologies.