Simple drone machine with two analog oscillators, each with a different waveform and individual frequency control via a light resistor. Also the 12dB lowpass filter can be controlled by light intensity. Really nice is the wooden case and the sweet bag made of felt.
The tone generators are a square wave and a sawtooth oscillator. The level can be set for each oscillator and the frequency range is selectable between high and low. A variable frequency control is possible only via photo resistors on top of the unit which makes the Lumanoise V1 so outstanding. The oscillator are not at the same base frequency which provides for frequency beating, so typical for drones.
A 12dB low pass filter with resonance sapes the sound. The cutoff frequency can be set either with the potentiometer (working in opposite direction, by the way) or another photo resistor.