Jon Johnson 208 Report post Posted June 27, 2017 Built inside a jar, this drone synthesizer consists of three square-wave oscillators modulating against each other. The pitch of each is controlled by outside light sources hitting the three sensors inside, so there is a lot of room for experimenting. Reacts well in dark settings with light sources such as flash lights, fire, video monitors, the sun etc. View full synthesizer Share this post Link to post Share on other sites