Pure Data(Research)

Pure Data is a software that is often used by media artists especially live music performer.

The UI of the software is similar to Isadora. Actually it is between Isadora and regular programing software. 

Pure Data is enable to user to create programs visually more than just words.

Pure Data is a family of applications Max/Msp/Jitter, but it free based on GPL license.

http://puredata.info/

The bellow is a demo that I found.

Arduino +  Pure Data

http://www.arduino.cc/playground/Interfacing/PD