The plinky logo and the design of the front panel design and all other graphic elements (both in code and in the documentation and hardware design) are CC BY-SA 4.0. Full text available at https://creativecommons.org/licenses/by-sa/4.0/
This repository is still somewhat disorganised, and includes some third party code. This includes (but may not be limited to), code generated by the STM32 Cube IDE default project generator; tinyusb; dear imgui (which in turn uses gl3w and glfw), portaudio. These projects remain under their original licenses.
The rest of the software of plinky is licensed under the MIT License https://opensource.org/licenses/MIT
The hardware design is licensed under the permissive CERN open hardware license, CERN-OHL-P v2. Full text is available at https://cern.ch/cern-ohl.
If you make something with this, I'd love to know! Let me know on twitter
If you sell or distribute something based on plinky, please make it clear that it is distinct from the original plinky design, and abide by the licenses above. My main concern is that the small plinky community, who are focused on discussion of creative audio hardware in general, become burdened with support or other work for a product they didn't actively get involved with. We don't want that! So please be respectful.
I would encourage you to follow similar guidelines to those outlined by Mutable Instruments, including the recommendation to not use the plinky name in derived products. Thankyou!