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From: bender@oobleck.Eng.Sun.COM (Michael Bender)
Newsgroups: sci.electronics
Subject: Re: Dec 90 Radio-Elec "Christmas Card" article
Message-ID: <1972@exodus.Eng.Sun.COM>
Date: 2 Nov 90 21:38:19 GMT
References: <1990Nov2.142454.10784@msuinfo.cl.msu.edu>
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Organization: Sun Microsystems, Mt. View, Ca.
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In article <1990Nov2.142454.10784@msuinfo.cl.msu.edu> gurney@kira.msu.edu (Eddy J. Gurney) writes:
>I just got done reading the latest issue of Radio-Electronics.  Or at
>least part of it. :-)  There's an article in the December issue on building
>a "Christmas card" that has 50 LEDs that blink in response to an AGC'd
>microphone audio input.  The article explains that they're really just
>"bar drivers", driven in either dor or bad mode, depending on the singal
>level.
>
>I think it would be a pretty neat effect to have a set of
>lights on the tree (or wherever) that "blinked" to the "ambient" Christmas
>music, or Christmas carols, or whatever!

Back in 1978 I connected my home-built "sound-light" (a term my friends and
I used to impress our other high-school friends!), which was a 3-channel
color organ, to our family's Christmas tree and played some Christmas music
through it (and the stereo).  I thought it was really neat.  When my parents
got home from shopping, they told me to unplug it and wire the tree back to
the way it was (no blinking lights or anything).  Oh, well, I guess they just
weren't ready for the onslaught of technology in the home at that time.

mike
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