[sdiy] Small Resistors and slider pots

[J. Larry Hendry]

> ----- Original Message -----
> From: Glen <mclilith at ezwv.com>
> A long, long time ago, I saw an optical potentiometer
> in a catalog. It was a linear, or "slider", style of potentiometer.
> ----snip----
> Has anyone on the list seen anything like I'm trying to describe?

Not exactly.  But, when I was in high school (many years ago) I played
in a band and used a Farsisa VIP233 keyard.  The volume pedal was optical
However, the variance method was different.  It used a fixed light source
and a fixed light sensing device.  The pedal pushed a piece of metal or
some other material between the fixed source of light and pick up that had
a slot that was very narrow at one end and got wider at the other to let in
more light.

The more I think about this type of arrangement I think it would be real
cool
as you could have any kind of "taper" you wanted on your pot based on how
the "light slot" was cut.

Larry Hendry