Almost finished designing a gamepad carrier board for the pi pico. Soo many improvements from my first one there would be too many to list them all. Its still just a prototype though.
* More buttons! 22 in total.
* hookups for switch joysticks.
* I think I should be able to use the state machines on the pico to poll the button matrix.
My end goal will be to make a handheld based on the pi compute module 4 but I'm starting small just making sure the software/hw of the controller will work.