DESCRIPTION:
When water makes a ripple it acts as a magnifing glass and makes some areas brighter than others. Phototransistors which are light sensors detect this change in light. An arduino or microcontroller receives the inputs from the sensors and sends them as midi events to a computer. A midi sequencer or a program that reads midi notes like from a midi keyboard then plays these notes accordingly.


I made a blog to help you make your own:
http://aleatoricwaterinstrument.blogspot.com/