Use the orbiting sander with a plastic tube of R 1 1/4" or R 1 1/2",
and fix it with good tape. 😇
(Drums fingers)
Waiting for a video... 😊
What about this design:
Place the pressure sensor "S" and vibrator "V" on the top of the un-erected shaft, and pull the foreskin over it.
Wrap a duct tape about the shaft, so it maintains the cylindrical shape. Also, tape the vibrator so it can not be pushed out.
[
attachment=30455]
The pressure sensor would detect erection as increasing pressure from the shaft head, and disconnect the vibrator, until the pressure eases.
The sensor may be tricky to build and calibrate, best would be an analog device controlled by an arduino, that could detect relative increase, not only absolute pressure. Also, the program may insert some minimum pause of let say 5 minutes after each erection detected, so the increased sensitivity would recede meanwhile.
Could be tricky to build but would do for interesting sessions? 😊
