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Dimming the light up when you get close to it?

Discussion in 'Electronic Basics' started by Homer, Mar 27, 2007.

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  1. Homer

    Homer Guest

    Hi All,

    Many years ago I used a 741 chip (and some others that I can't
    remember) to create a circuit. Circuit had an antenna (5 inch or so)
    and when some one was getting close to it (6 ft or closer) it was
    dimming up a 6-volt light (based on how close is the person). I am
    awfully rusty with electronic these days. Does anybody know how to
    make one of these again or if there is any ready made out there?


    Thanks in advance,

    Homer
     
  2. Hawker

    Hawker Guest

    Google capacitive sense and Theriman and you will get some similar ideas.
     
  3. Rich Grise

    Rich Grise Guest

    Might have a little better luck googling "theremin". :)

    Cheers!
    Rich
     
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