Simulating Chords using sound

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  1. - 9th June 2010, 07:09 #1
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    ScaleRobotics
    ScaleRobotics is offline Prolific Poster
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    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.
  2. - 9th June 2010, 15:02 #2
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    rmteo
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    Everything (except for the speaker amplifier) is done with a PIC. A PIC16F88 is used to scan 36 capacitive touch switches (using coins), an 8-channel PWM generator for polyphonic tones (chords) and voices, etc. They key to getting all of this to work is the use of a Real Time Operating System.
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