A quick video of a plotter and accompanying piece of software that I made. The plotter connects to a mac via a USB port.
The software is written in Objective C/C++ using openFrameworks for graphics/serial and Cocoa for a nice GUI.
The plotter is driven by an ATmega8 MC programmed in C.
A whole load of information/code/images/videos/schematics can been seen at pedroandsybil.wgallia.com