This Module is currently available.
Theremin solar power in between CV out from 0-5 volts
Theremin solar power in between
CV out from 0 to 5 volts
and everything in between
only 6hp
see demo
https://www.errorinstruments.com/a-59511162/error-modular/eraserhead-theremin/#description
6 Users are observing this
These merchants probably sell this module. Huh?
