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I was also thinking the same thing as Shannon posted. Also an intermittent "no motion" mode seems like fun: You have the device strapped to you in some way and are allowed to move all you want, but every once in a while an LED starts blinking for a short time (or it beeps, if you can make...

Does anyone have any experience controlling a TENS unit with an Arduino? What about simply cutting one of the wires and inserting a relay to turn the voltage on and off? Or maybe two relays in series for safety just in case the contacts stick? Of course they would be normally open relays to accommod...

I am laying on the bed with my legs spread apart and my arms tied above my head. There is a wire between my ankles which I am trying to keep the tension on. The problem is that the wire between my ankles contains a tension load cell which feeds back the degree of tension to an Arduino. See the link ...

Imagine after a day of work, evening comes and you tape four vibrators onto your balls and settle in to your bed. The vibrator on time is random between 0 and 40 seconds; the off time is random from 0 to 5 minutes. Close your eyes and rest. Suddenly your are startled out of your rest by strong vibra...

For a simple uC ball vibrator, consider these small vibrators. https://www.amazon.com/tatoko-vibration-Waterproof-8000-16000RPM-toothbrush/dp/B07KYLZC1S/ref=sr_1_3?dchild=1&keywords=arduino+vibrator&qid=1584136919&sr=8-3 I connected 4 of them to a PWM Arduino output using a MOSFET driver...

For out in public, try the rough side of velco strips adhered inside your underwear or jockstrap.