There was an art project done a few years ago using 7-segment displays and animations, looked quite cool too: http://hackaday.com/2013/11/21/7-segment-display-

There was an art project done a few years ago using 7-segment displays and animations, looked quite cool too: http://hackaday.com/2013/11/21/7-segment-display-matrix-visualizes-more-than-numbers/ http://hackaday.com/2013/11/21/7-segment-display-matrix-visu...