{"id":18676138,"url":"https://github.com/greatscottgadgets/cynthion","last_synced_at":"2025-10-09T04:45:00.314Z","repository":{"id":176611501,"uuid":"657670449","full_name":"greatscottgadgets/cynthion","owner":"greatscottgadgets","description":"USB test instrument","archived":false,"fork":false,"pushed_at":"2025-05-02T10:01:11.000Z","size":9155,"stargazers_count":126,"open_issues_count":42,"forks_count":24,"subscribers_count":13,"default_branch":"main","last_synced_at":"2025-05-15T12:57:10.760Z","etag":null,"topics":["gateware","software","test","usb"],"latest_commit_sha":null,"homepage":"https://greatscottgadgets.com/cynthion/","language":"Rust","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"bsd-3-clause","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/greatscottgadgets.png","metadata":{"files":{"readme":"README.md","changelog":"CHANGELOG.md","contributing":null,"funding":null,"license":"LICENSE.txt","code_of_conduct":"CODE_OF_CONDUCT.md","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,"zenodo":null}},"created_at":"2023-06-23T15:10:31.000Z","updated_at":"2025-05-06T04:15:06.000Z","dependencies_parsed_at":"2023-10-10T18:35:28.628Z","dependency_job_id":"54a149fc-61bd-492b-8735-07d843af3081","html_url":"https://github.com/greatscottgadgets/cynthion","commit_stats":null,"previous_names":["greatscottgadgets/cynthion"],"tags_count":10,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/greatscottgadgets%2Fcynthion","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/greatscottgadgets%2Fcynthion/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/greatscottgadgets%2Fcynthion/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/greatscottgadgets%2Fcynthion/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/greatscottgadgets","download_url":"https://codeload.github.com/greatscottgadgets/cynthion/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":254346575,"owners_count":22055809,"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":["gateware","software","test","usb"],"created_at":"2024-11-07T09:27:50.011Z","updated_at":"2025-10-09T04:44:55.293Z","avatar_url":"https://github.com/greatscottgadgets.png","language":"Rust","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Cynthion: a USB Test Instrument\n\nCynthion is an all-in-one tool for building, testing, monitoring, and experimenting with USB devices. Built around a unique FPGA-based architecture, Cynthion’s digital hardware can be fully customized to suit the application at hand. As a result, it can act as a no-compromise High-Speed USB protocol analyzer, a USB-hacking multi-tool, or a USB development platform.\n\nOut-of-the-box, Cynthion acts as a USB protocol analyzer capable of capturing and analyzing traffic between a host and any Low-, Full-, or High-Speed (\"USB 2.0\") USB device. It works seamlessly with our open-source analysis software.\n\nCombined with our LUNA gateware and Facedancer libraries, Cynthion becomes a versatile USB-hacking and development tool. Facedancer makes it quick and easy to create or tamper with real USB devices—not just emulations—even if you don’t have experience with digital-hardware design, HDL, or FPGA architecture!\n\nFor more information, see the [Cynthion Crowd Supply](https://www.crowdsupply.com/great-scott-gadgets/cynthion) page.\n\n## Project Structure\n\nThis project is broken down into several directories:\n\n* [`docs/`](docs/) -- sources for the Cynthion Sphinx documentation\n* [`cynthion/python/`](cynthion/python/) -- sources for the main `cynthion` python module and amaranth gateware.\n* [`cynthion/rust/`](cynthion/rust/)   -- sources for the main `cynthion` rust crate.\n* [`firmware/`](firmware/) -- sources for Cynthion firmware.\n* [`shared/`](shared/) -- a collection of toml files containing values shared between host code, gateware and firmware.\n* [`util/`](util/) -- miscellaneous support files for Cynthion\n\n## Project Documentation\n\nCynthion's documentation is captured on [Read the Docs](https://cynthion.readthedocs.io/en/latest/). Raw documentation sources are in the [`docs/`](docs/) folder.\n\n## Related Projects\n\nCynthion is supported by two additional firmware projects:\n\n* [Apollo](https://github.com/greatscottgadgets/apollo/), the firmware that runs on Cynthion's debug controller, and which is responsible for configuring its FPGA.\n* [Saturn-V](https://github.com/greatscottgadgets/saturn-v/), a DFU bootloader created for Cynthion.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fgreatscottgadgets%2Fcynthion","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fgreatscottgadgets%2Fcynthion","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fgreatscottgadgets%2Fcynthion/lists"}