After a break from the holidays, I'm back to working on these sensors, starting with the conductive rubber penile plethysmograph. I have vastly improved the CPU processing power (8bit to 32-bit processor) that'll be reading this sensor and then controlling several channels of vibes. More CPU power will make it possible to try multiple algorithms for estimating CTO, to see which ones are best (this may be someting we'd need to how individuals differ, and account for that, as well. The ultimate purpose is to have sensors+software to detect "close to orgasm" (CTO), so the vibes can pause, or slow way down.PiJoy wrote:Greetings all,
I've made a working penile plethysmograph using conductive rubber: (See my earliest post.)
This seems to work well, for a first prototype. The conductive rubber I'm using is much higher resistance than the Indium/Gallium used in research instruments. This makes the resistance (a few kilo-ohms) a much easier value to make measurements from, using standard electronics (wheatstone bridge + differential amp.) The sensor is adjustable for girth, via a slot melted into the nylon webbing, and a wingnut for tool-free adjustment. Next time I'll use finer-gauge wire attached to the sensor, so the wires won't be so awkward.
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Anybody interested in hearing more, making suggestions, possibly serving as an alpha tester (nearby strongly preferred), please get in touch with me here or via private message.
PiJoy
(A kinky technologist, trying to multiply the joy in the world.)