Quote Originally Posted by rsocor01 View Post
Nice video!!

Don't tell me they made this piano with a PIC . What are the round buttons? Are they touch sensors?

Robert
It is done with a PIC, a 16F688. The buttons are capacitive sensors, in this case it looks like he used coins. They can be pretty much made out of anything metal. This guy has done some nice work. Check out http://www.pic24.ru/doku.php/en/osa/.../pk2_osa_piano for more info.