Mini Sand Draw

From TheRobotGroupWiki

Mini Sand Draw is a small inexpensive plotting system that uses two servos and a mechanical linkage to doodle. The original prototype was made out of foam core and the second model was built out of wood slats from an old bed frame, a sheet of acrylic made into a tray, some aluminum stock pieces. The electronics are two standard hobby servos and a parallax propellar proto board.

Here is a picture of the prototype:

Youtube video: http://www.youtube.com/watch?v=4O8tDgYh7LY