At 10:47 AM 6/28/02 -0500, you wrote:
>My all-in-one Sony mini component system does that (it's
>about 14 years old).  I don't think it's a rotary encoder
>cause it has a definite start and end, and has no detents
>(very smooth).  But altering the volume on the remote will
>change the physical position of the rotary knob.  Has a
>cool little LED on it too, to indicate the setting/position.

These are motorized pots. They have the advantage that they
maintain their setting with power-off, and don't require
a "home" switch as a stepper would. They used to be hideously
expensive (and professional quality), became cheap (and consumer
quality) as a gimmick in stereos, now perhaps are going to get
hard to find again.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
9/11 United we Stand

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