{"id":20647184,"url":"https://github.com/bbbbbr/megaduck_cartridge_shell","last_synced_at":"2026-02-04T15:01:54.941Z","repository":{"id":83821443,"uuid":"571496786","full_name":"bbbbbr/megaduck_cartridge_shell","owner":"bbbbbr","description":"3D Printable Cartidge Shell for the Mega Duck Console","archived":false,"fork":false,"pushed_at":"2022-12-10T06:59:13.000Z","size":8740,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-06-24T21:49:54.745Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":null,"has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"other","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/bbbbbr.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","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":"2022-11-28T09:06:09.000Z","updated_at":"2022-11-28T09:06:09.000Z","dependencies_parsed_at":null,"dependency_job_id":"cad6a583-f615-40d9-b290-dc824feb581b","html_url":"https://github.com/bbbbbr/megaduck_cartridge_shell","commit_stats":null,"previous_names":[],"tags_count":2,"template":false,"template_full_name":null,"purl":"pkg:github/bbbbbr/megaduck_cartridge_shell","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/bbbbbr%2Fmegaduck_cartridge_shell","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/bbbbbr%2Fmegaduck_cartridge_shell/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/bbbbbr%2Fmegaduck_cartridge_shell/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/bbbbbr%2Fmegaduck_cartridge_shell/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/bbbbbr","download_url":"https://codeload.github.com/bbbbbr/megaduck_cartridge_shell/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/bbbbbr%2Fmegaduck_cartridge_shell/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":29088407,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-02-04T03:31:03.593Z","status":"ssl_error","status_checked_at":"2026-02-04T03:29:50.742Z","response_time":62,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.5:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"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":[],"created_at":"2024-11-16T16:29:27.094Z","updated_at":"2026-02-04T15:01:54.913Z","avatar_url":"https://github.com/bbbbbr.png","language":null,"readme":"## 3D Printable Cartidge Shell for the Mega Duck Console\n\nThe [Mega Duck](https://en.wikipedia.org/wiki/Mega_Duck) / Cougar Boy is a (1993) hardware clone of the Game Boy with some register changes and a different cartridge format.\n\nUntil now there have been no aftermarket Cartridge Shells available for the Mega Duck. This 3D printable design can be used to avoid harvesting OEM shells for use with Flash Cartridge PCBs.\n\n![Picture of Several 3D Printed Mega Duck Cart Shells with OEM and Inside Gadgets Circuit Boards installed](Info/MegaDuck_CartShell_Multi.jpg)\n\n\n## Features:\n- Compatible with OEM and Inside Gadgets Mega Duck cartidge PCBs\n- Opens easily and parts remain aligned without screws for easier programming access during development\n- Screws can be used to lock the top and bottom parts together\n\n\n## 3D Printing and Design\nThe design has been printed with success in PLA.\n\n- Use the `.stl` files for printing (See [Releases](https://github.com/bbbbbr/megaduck_cartridge_shell/releases) or [Thingiverse](https://www.thingiverse.com/bbbbbr/designs))\n- Use the `.FCStd` files for modifying the design (FreeCAD 20.1)\n\nThis was my first design using FreeCAD so there are things which should be done differently, but which I'm not going to go back and fix for now (such as fillets mixed in, instead of all last).\n\n\n## GBXCart Programming Jig\nAn improved adapter jig for programming the Inside Gadgets cartridge with a gbxcart is also included in this repo.\n\n![Picture of Inside Gadgets Mega Duck cartridge PCB plugged into a gbxcart using the 3D printed adapter jig](Info/MegaDuck_gbxcart_adapter.jpg)\n\n\n## Screws\nTo avoid scratching the inside of the cartridge slot use screws with a pan head of ~1.2mm or less (so they fit completely within the screw hole recesses). \nDepending on the fidelity of the 3D print it may be necessary to slightly ream out the screw holes.\n\nCompatible screws:\n- [#21534 at MetricScrews.us](https://www.metricscrews.us/index.php?main_page=product_info\u0026cPath=98_298_300\u0026products_id=1248)\n  - M1.7x3 Steel / Nickel Pan Head Phillips Machine Screw, Pan Head Height \u0026 Diameter: 1.1mm, 3.2mm\n- [#20612 at MetricScrews.us](https://www.metricscrews.us/index.php?main_page=product_info\u0026cPath=98_298_300\u0026products_id=506)\n  - M1.7-0.35 x 3.5mm C1018 / Steel / Nickel Pan Head Phillips Machine Screw, Pan Head Height \u0026 Diameter: 1.1mm, 3.2mm\n  \n\n## Available Flash Carts\n\n### Inside Gadgets\nInside Gadgets sells a 32K Mega Duck flash cart with RAM and no MBC (~$9). It can be used with this cartridge shell design.\n- Has a Game Boy cartridge connector on the other end so that it can be programmed with the a gbxcart.\n- Cartridge: https://shop.insidegadgets.com/product/megaduck-32kb-flash-cart/\n- GBXCart programmer: https://www.gbxcart.com/\n\n\n### a2heaven\na2heaven.com sells a Multi-Cart (~$66) which comes in ready made shell, so no 3D Printed shell is required.\nhttp://www.a2heaven.com/webshop/index.php?rt=product/product\u0026product_id=172\n\n\n## Development Tools\nAs of [GBDK-2020](https://github.com/gbdk-2020/gbdk-2020) 4.0.6 it is now possible to write software for the Mega Duck in C. \n\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fbbbbbr%2Fmegaduck_cartridge_shell","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fbbbbbr%2Fmegaduck_cartridge_shell","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fbbbbbr%2Fmegaduck_cartridge_shell/lists"}