{"id":13418390,"url":"https://github.com/raybellis/PicoSynth","last_synced_at":"2025-03-15T03:31:04.770Z","repository":{"id":215008031,"uuid":"617433629","full_name":"raybellis/PicoSynth","owner":"raybellis","description":"Polyphonic wavetable synthesizer for the Raspberry Pi Pico","archived":false,"fork":false,"pushed_at":"2024-01-05T11:25:43.000Z","size":130,"stargazers_count":22,"open_issues_count":2,"forks_count":2,"subscribers_count":4,"default_branch":"main","last_synced_at":"2024-12-06T21:42:23.603Z","etag":null,"topics":["midi","midi-device","rp2040","rpi-pico","synthesizer"],"latest_commit_sha":null,"homepage":"","language":"C++","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/raybellis.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2023-03-22T11:40:56.000Z","updated_at":"2024-11-23T04:10:45.000Z","dependencies_parsed_at":"2024-01-05T12:24:04.130Z","dependency_job_id":null,"html_url":"https://github.com/raybellis/PicoSynth","commit_stats":null,"previous_names":["raybellis/picosynth"],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/raybellis%2FPicoSynth","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/raybellis%2FPicoSynth/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/raybellis%2FPicoSynth/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/raybellis%2FPicoSynth/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/raybellis","download_url":"https://codeload.github.com/raybellis/PicoSynth/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":243681024,"owners_count":20330152,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["midi","midi-device","rp2040","rpi-pico","synthesizer"],"created_at":"2024-07-30T22:01:01.732Z","updated_at":"2025-03-15T03:31:04.218Z","avatar_url":"https://github.com/raybellis.png","language":"C++","funding_links":[],"categories":["C++"],"sub_categories":[],"readme":"# PicoSynth\n\nA polyphonic wavetable synthesizer for the Raspberry Pi Pico.\n\n(C) Ray Bellis 2023-2024\n\nNB: this is very much a work in progress!\n\n## Current Features\n\n- 128 voices\n- 16 channel multi-timbral\n- four hard-coded presets\n- 16-bit stereo I2S audio at 44.1kHz \n- wavetable DCOs (2048 x 16-bit samples) using the RP2040 interpolator\n- DCO modulation:\n  - LFO (per voice)\n  - ADSR pitch envelope\n  - pitch bend\n- DCA\n  - ADSR envelope\n  - stereo pan\n- USB MIDI device\n- Serial MIDI (UART1, pins 4/5)\n\nThe RP2040 is overclocked to 250 MHz.\n\nThe I2S interface is configured for use with the Pimoroni Audio Pack.  A\nPCB with MIDI DIN ports and I2S DAC is under development.\n\nThe [Datanoise PicoADK](https://github.com/DatanoiseTV/PicoADK-Hardware)\nboard is also supported via `CONFIG_HW_PICOADK` in the `CMakeLists.txt` file.\n\n## Building\n\nFamiliarity with using the RP2040 Pico SDK is assumed.\n\nMy own development system is macOS and I use the arm-none-eabi-gcc\ncompiler v13.2.0 from MacPorts.\n\nBuilding the code requires the following repositories, as well as an\ninstallation of NodeJS which is used to construct the various lookup\ntables used by the code:\n\n- Pico SDK (https://github.com/raspberrypi/pico-sdk.git)\n- Pico Extras (https://github.com/raspberrypi/pico-extras.git)\n- Pimoroni Pico Lib (https://github.com/pimoroni/pimoroni-pico.git)\n\nI use the following in my `.cshrc` with the above three repositories all\nchecked out into `${PICO_HOME}`:\n\n```\nsetenv PICO_HOME \"/opt/pico\"\nsetenv PICO_SDK_PATH \"${PICO_HOME}/pico-sdk\"\nsetenv PICO_EXTRAS_PATH \"${PICO_HOME}/pico-extras\"\n```\n\n## License\n\nThis source code is released under the GPLv3.0 License\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fraybellis%2FPicoSynth","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fraybellis%2FPicoSynth","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fraybellis%2FPicoSynth/lists"}