Custom firmware overlay for Anycubic Kobra 3D printers, plus the tools and apps that grew up around it. Free and open-source. Maintained by a small group of contributors and a much larger community of users.

Detailed firmware version compatibility lives in the main repository README.

• New users: read the quick start guide on the docs site
• Looking for stock Anycubic firmware: see the firmware archive
• Want to dig into how it works: firmware internals docs

• Rinkhals -- the firmware overlay itself, plus the documentation site source
• Rinkhals.Apps -- community-maintained apps that extend your printer with remote access, networking, AI monitoring, and more. Pre-built SWU packages are available on the releases page
• Rinkhals.Firmwares -- manifests for stock Anycubic firmware releases used by the auto-update system

• GitHub Discussions for questions, ideas, and show-and-tell
• Issue tracker for bug reports
• Discord: see the link in the main repo README

Pull requests are welcome. See CONTRIBUTING for guidelines and CODE_OF_CONDUCT for community expectations.

If you find a bug, please use the bug report template and include a debug bundle. Instructions for generating one are here.

Rinkhals exists because of Julien Batonnet (@jbatonnet), who built and maintained the original project for years. This organization is a continuation of that work with broader maintainership.

Thanks also to every contributor who has filed an issue, sent a PR, tested a build, or written documentation.

MIT for original Rinkhals code. Bundled third-party components retain their own licenses. See the LICENSE file for details.