"Magic Music" by John Becker
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Everyday Practical Electronics, January 2002

You will be able to mystify an audience with your new magical
powers, conjuring up music just by waving your hands in the air!

Magic Music uses an invisible ultrasonic system to detect hand
motion and distance, to produce music out of nowhere! Our circuit
uses two PIC 16F84 microcontrollers and and enevelope shaper. It
can drive almost any sound output large or small. Straightforward to
build, an ideal novelty circuit for electronics enthusiasts everywhere.

The latest version of the software is available from
ftp://ftp.epemag.wimborne.co.uk/pub/PICS/MagicMusic

Please refer to the EPE web site for details of ordering back issues,
subscriptions etc.  http://www.epemag.wimborne.co.uk

Last updated 12 December 2001