Using the ultra-cheap and amazing Raspberry Pi Pico to convert a retro joystick 9-pin DSUB to a much more pluggable USB is a simple and very cool little project.

Here is where I first found this project - https://www.instructables.com/Retro-9-Pin-Joystick-to-USB-Converter/

And here is the original source project - https://gitlab.com/realrobots/PicoGamepad

The BRILLIANT Monster Joysticks Converter - https://monsterjoysticks.com/9-pin-joystick-to-usb-adapter

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