Stand-Alone Volume Control

Posted: 11/26/2005 8:30:37 PM
xalfredogarciax

Joined: 11/26/2005

(apologies for the cross-posting. I was not sure about the most appropriate forum)

I am an artist and have reach a point in my research where I need to call for help. I am interested in an interface which regulates the volume of a radio based on a person's proximity. The range I am looking for is roughly within a foot of the interface and I am looking to have the volume increase as the person gets closer.

I have a simple circuit which works with optics/lights but would prefer the interface to be robust to lighting. I believe a capacitance-based regulator would be great. Any help would be great.

Thanks.

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