This project contains the hardware design files and firmware used to build a 4 SNES controller hub to USB. At its core the board uses a Raspberry Pi Pico W (could technically also be a regular Raspberry Pi Pico, but I have not tried this) to poll the SNES controllers and manage USB communications with the host.
The design files are made using KiCAD, and the firmware is written in C++ using the pico-sdk and FreeRTOS.
The toplevel files are the hardware design files.
The software is in the firmware/ directory. This has its own README.md.
The graphics/ directory contains schematics and PCB diagrams in
easier-to-access formats for human use.
See the LICENSE files in the top level directory and in the firmware/ folder
for more details.
In summary, the hardware files are released under the "CERN Open Hardware Licence Version 2 - Weakly Reciprocal" license, and the software is dual-licensed under the LGPL-2.1 or later and GPL-2.0 or later.