{"id":17922270,"url":"https://github.com/kulp/soylent","last_synced_at":"2026-03-19T02:29:28.847Z","repository":{"id":66820483,"uuid":"231131442","full_name":"kulp/soylent","owner":"kulp","description":"An aspirational hardware design for a tiny (300-baud FSK) modem for the TI Silent 707 teletype","archived":false,"fork":false,"pushed_at":"2023-01-25T00:37:48.000Z","size":454,"stargazers_count":1,"open_issues_count":0,"forks_count":0,"subscribers_count":3,"default_branch":"master","last_synced_at":"2025-02-08T22:15:43.925Z","etag":null,"topics":["avr","hardware","kicad"],"latest_commit_sha":null,"homepage":null,"language":null,"has_issues":false,"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/kulp.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":"2019-12-31T18:21:22.000Z","updated_at":"2023-01-25T00:37:53.000Z","dependencies_parsed_at":"2023-08-01T05:16:38.090Z","dependency_job_id":null,"html_url":"https://github.com/kulp/soylent","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/kulp%2Fsoylent","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/kulp%2Fsoylent/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/kulp%2Fsoylent/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/kulp%2Fsoylent/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/kulp","download_url":"https://codeload.github.com/kulp/soylent/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":246970349,"owners_count":20862508,"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":["avr","hardware","kicad"],"created_at":"2024-10-28T20:38:27.144Z","updated_at":"2026-01-16T00:49:54.500Z","avatar_url":"https://github.com/kulp.png","language":null,"funding_links":[],"categories":[],"sub_categories":[],"readme":"# soylent\n\n![3d rendering of soylent](doc/soylent3d_0.jpg)\n\n`soylent` is an \"aspirational\" (i.e. entirely untested, and designed by an electronics neophyte) hardware design for a tiny hardware modem for the TI Silent 707 briefcase teletype from the [Texas Instruments Silent 700 series](https://en.wikipedia.org/wiki/Silent_700).\n\nThe teletype speaks 300-baud [FSK](https://en.wikipedia.org/wiki/Frequency-shift_keying) using the [Bell 103 dataset](https://en.wikipedia.org/wiki/Bell_103_modem). The modem is designed to connect directly to the acoustic-coupler interface of the teletype, which supplies power to the modem as well as providing the FSK audio signal. The modem is designed to implement full-duplex translation between the FSK signal and a minimal [RS-232](https://en.wikipedia.org/wiki/RS-232) serial connection at 300bps.\n\nThe intention is for the [tynsel](https://github.com/kulp/tynsel) project to supply a software implementation for the [AVR microcontroller](https://www.microchip.com/wwwproducts/en/ATTINY412) in the `soylent` design. For now, `soylent` serves mainly as a playground for the author to learn [KiCad](https://kicad-pcb.org).\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkulp%2Fsoylent","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fkulp%2Fsoylent","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fkulp%2Fsoylent/lists"}