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The 808 Cymbal Drone Generator use six fixed frequency square wave oscillators.
The six oscillator cluster circuit came from the TR808 drum machine for creating cymbal sounds and other metal plate sounds, in fact these are the harmonic frequencies of the sounds of metal plates.
Each of the six oscillators have a volume pot and a 12 db low pass resonant filter, the filter cut-off can be controlled by the potentiometer or the photo resistor.
Lumanoise works with voltage between 9 and 12 volt
direct current DC, central +