pico-dco
usynth
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pico-dco
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Best Oscillators for Frequency Stability?
here's a project made by polykit who posts here with some really good stuff.
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Polyphony in analog synthesizer with arduino
I think you could look into DCOs later, I'm in the process of building a polysyth based on this: https://github.com/polykit/pico-dco
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What's up with DCO's?
I built an analog polyphonic synthesizer with a DCO. I used a Raspberry Pi Pico to drive 6 voices. Schematics, PCB and source code are on GitHub: https://github.com/polykit/pico-dco It’s super stable and can be directly controlled by MIDI, no additional pitch CV needed.
usynth
What are some alternatives?
esp32_basic_synth - ESP32 based simple synthesizer project
AKWF-FREE - Adventure Kid Wave Forms are a collection of sampled one cycle waveforms for use in synthesizers or similar sound generators.
Euclid_Probe - Euclid probe, a magnetically coupled Z Probe
Arduino_GFX - Arduino GFX developing for various color displays and various data bus interfaces
kosmo-multitool - Arduino Nano Every based development platform for DIY synthesizer enthusiasts.
ATTinyCore - Arduino core for ATtiny 1634, 828, x313, x4, x41, x5, x61, x7 and x8
HAGIWOs_Module - eurorack modular synthesizers projects using Arduino.
webaudiofont - Use full GM set of musical instruments to play MIDI and single sounds or effects. Support for reverberation and equaliser. No plugins, no Flash. Pure HTML5 implementation compatible with desktop and mobile browser. See live examples.