Axoloti-based PWM synthesizer

[Ott]

I programming and wired this thing:

https://www.youtube.com/watch?v=5oiva7wCYEo

It's a 7 voice, 3 oscillator per-voice synthesizer. Oscillator 1 is a pulsewidth modulation oscillator, oscillator 2 is a square oscillator with optional sync input from oscillator 1, and oscillator 3 is an inaudible sine oscillator used for frequency modulating oscillator 2. The knobs are as follows, starting at the bottom right and going up:
Envelope 1 attack, decay, sustain, and release
Envelope 2 attack and release, filter frequency and resonance
Oscillator 1 pulsewidth modulation with envelope 1, oscillator 2 pitch modulation with envelope 2, oscillator 2 frequency modulation with oscillator 3, oscillator 3 frequency
Oscillator 1 pitch, oscillator 2 pitch, oscillator 1/2 crossfade, oscillator 2 sync on/off

[DrLuke]

Thanks for reminding me that Axolotis are a thing! I've wanted to get one for years, but they always were out of stock.