ESP32 synth: 2 x TB303 synths + TR808 drum machine. Source code provided

DIY ESP32 Arduino synth. Two tb303-like synthesizer basslines plus one tr808-like drum sampler, plus delay, plus reverb, plus compressor, plus filters, distortions and overdrive effects. Classical acid combo. All MIDI-controllable, all running on a single ESP32-WROVER module with an external PCM5102 DAC, utilizing both main cores of the MPU. Now ESP32S3 is supported. It costs just about $10 to buy both ESP32 and PCM5102. Even more, it's an endless random acid-track generator. It's easy to compile the code, using Arduino IDE.