Could magnetic pendulums be combined with calligraphy? Yes, I think they can, and might produce very interesting results.
Magnetic Pendulum Calligraphy (Idea)
Media Art Projects
This is a collection of various media art projects that I participated in, created myself, or was involved in while I was at the ZKM, or at a later time when I was doing freelance work with various folks.
smplayer
This is the source archive for smplayer a Linux+OpenGL based LUA scriptable mediaplayer that supports HD video playback and custom digital IO controls; it was used as Digital Retina media art installation by Jill Scott in Version 2.0.