VCA / LPG super low price / super good

solar theremin is a light-sensitive controller that can be controlled with shade
as a theremin. it has 3 x out with 0 to 6 volts and everything in between.

there is also a built-in vactrol. for and VCA / LPG
so you can MANIPULATE input for you audio or CV

11 hp
passive source so no power needed

see demo

https://www.errorinstruments.com/a-52917731/welcome/solar-v2-theremin/

https://www.errorinstruments.com/a-52917731/welcome/solar-v2-theremin/