The Printball is “an Ink-Jet printer using a PaintBall Gun as printhead. The gun is mounted on a pan & tilt unit which is connected to a Max/Msp based software through an Atmel chip [programmed in Basic]. The software allow the users to load and analyze images. The resolution of the image and the space between the point [definition the image] can be adjusted. Because the document is printed from a central point the number of steps by points send to the pan & tilt, which is moved by two stepper motors, one for each axe horizontal and vertical, determine the space between each point.”
Very cool mashup of two hardware devices – printer and paint ball gun – check out some of the “TEST PRINTS” on the above link. I definitely would not want to be caught in front of that.