Try using a piezo transducer with an oscillator built in (Radio Shack, ugh!,
even has one).  These things work from about 3 to 12 Volts.  Put about a
47uF cap across the piezo.  Then drive it from an I/O pin.  If you switch
the pin back and forth between output high and input then you get a nice
chime.  Try different duty cycles to get the best effect.  I've tried this
before and it sounds very similar to a car chime.

Alan

-----Original Message-----
From: Harold Hallikainen <haroldhallikainen@JUNO.COM>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: Tuesday, February 02, 1999 10:33 AM
Subject: chime tone chip?


>        Anyone have any ideas of a supplier and part number for a chip
>that would make a nice chime tone (perhaps like that used in cars to tell
>you your seat belt is not fastened)?  The chip, of course, would be
>driven by a PIC!
>
>Thanks!
>
>Harold
>
>
>
>Harold Hallikainen
>harold@hallikainen.com
>Hallikainen & Friends, Inc.
>See the FCC Rules at http://hallikainen.com/FccRules and comments filed
>in LPFM proceeding at http://hallikainen.com/lpfm
>
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