Maximal Drone from Handmade Electronic Instruments on Tindie
Rucci Maximal Drone Synth | Reverb
Baby8 sequencer + Minimal Drone Synth through Behringer's reverb and delay pedals - YouTube
RF's DIY Modular Synth Pages
Stone Drone (Rucci Minimal Drone) - YouTube
Drone Synth - Layout and schematic update over the hand drawn one from earlier, based on LMNC oscillator w/filter. Curios what other ideas to add to this, I have seen capacitor switching