This is an open-source analog circuit and pcb for the product Light-Affected Tone pedal designed by Another Dimension Effects. Simulation adfxz.com/light-affected-tone-pedalIt is a pedal whose tone is affected by light. Frequency of light flashes controls the tone modulation rate and intensity of the light flash determines the amount of modulation of the tone. https://github.com/adct-the-experimenter/light-affected-tone-pedal