I want to use 8 *unusually long* touch controllers with Pd, via a simple midi-board that I made a couple years ago, and am fishing here for ideas and advice in regard to such controllers/potentiometers.
This is simply about trying to build a more visually-performative/theatrical element into an "instrument", so as to visually sort of amplify the otherwise nearly-invisible-to-the-audience twiddlings of standard linear and rotary pots in a performance. And, the greater potential for "precision" over the greater length would of course be a nice extra.
The catch is that the longest touch pots that I can find online are "membrane pots", up to a maximum length of just 500mm, which is no significant breakthrough length for my purpose (http://www.sparkfun.com/commerce/product_info.php?products_id=8681). And, in any case, these cost about $27 apiece, which should be outrageous by any standards anywhere in the world, and is certainly very much so for me here in India, where a standard pot costs just about 10 cents,.. and $27 could hire me a strong-arm-lad for as long as a week or more!
And so, I wonder whether anyone can guide me on how to simply devise long pots for myself, each say about a meter long.
From an earlier thread that I read on this forum quite sometime ago, I do remember that a length of some sorts of video-tape can serve as the resistance material for a long pot. BUT, that is too fragile a material/coating for me to really bother trying for an instrument that would be meant to be actually playable for a long time, rather than just tried/demonstrated a few times.
I'd be grateful to have any thoughts and guidance on this.
Thanks, and keep well all ~ Shankar