Available as an assembled Module and as a DIY project.
This Module is currently available.
Dual Light-Controlled Voltage Source
SetonixSynth x Tidbit Audio Solar Voltages
The Solar Voltages is a 2hp, 2-channel Solar Cell module which outputs two separate control voltages in response to light. Each channel outputs approximately 0-5V, with higher voltages corresponding to more intense and/or direct light. As the two channels can be manipulated with relative independence, the Solar Voltages makes for a great low-profile and multi-dimensional “light theremin” for direct and spontaneous control of two different parameters at once.
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SetonixSynth Solar Voltages Dual