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Perfect Circuit Audio (RSS)
"The VCOFan is VCO that uses a fan as a sounds source.
There is a LED under the fan that shines onto the blades of the fan, the fans bottom side is spray painted white, so the light from the led reflects from the blades. Next to the LED there is a LDR that translates the reflected light into a voltage, which is the audio signal.
Connections: The top connector is the CV input for the Fan speed (0v to 12v). The middle connector is the CV input for the LED brightness (0v to 12v). The output is the bottom connector, it is a audio signal that is capacitor coupled.
Potentiometers: The top potentiometer sets or attenuates the Fan speed. The middle potentiometer sets or attenuates the LED brightness. The bottom trimmer potentiometer (under the 2mm hole) sets the audio output volume.
Features
CV input for Fan Speed
CV Input for LED Brightness
Audio Output
Fan Speed Control
LED Brightness Control
Trimmer for Audio Output Volume"
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