Chromatone "Colour To Sound" experimental converter by John Becker

Everyday Practical Electronics, November 2005

This wonderful novelty circuit is a twist on the traditional sound to light converter
often seen at clubs and discos. A PIC18F252 microcontroller is fed with
colour data representing the colour detected, and converted into a single
value representing the colour sensed. A musical "note" is sounded, from across
several octaves.

A series of Sharp IS474 opto detectors is used to detect RGB values and convert the
colours into an electrical signal. Circuit includes built-in envelope shaper and
audio output for direct speaker or 'phones.


Free source code available for download from 
http://www.epemag.wimborne.co.uk/downloads.html

Parts are available from the usual component sources. Please note
that EPE does not provide kits but many of the requirements can
be met by our advertisers.

Please refer to the EPE web site for details of ordering back issues,
subscriptions etc.

http://www.epemag.wimborne.co.uk

Last updated 17th October 2005