Open-Frame1 VS pico-rectangle

Agreed that keyboards are a good early project. To add to that, if you play video games, leverless arcade controllers can be a fun build also. Pretty similar overall as far as parts and shape, but the firmware they run (stuff like GP2040-CE or HayBox) make them act as controllers instead of keyboards, and they can even work on game consoles. Specifically I'd recommend the Flatbox rev 5[0] and the Open-Frame1[1].

[0] https://github.com/jfedor2/flatbox

[1] https://github.com/GregTurbo/Open-Frame1

Uhhh, it is custom. I can try and find the schematic. I have the website that shows how to order it. They’re from china. Jlpcb. https://github.com/GregTurbo/Open-Frame1

This is what I’m doing the method doesn’t mention using the riser not sure if I need it. Will it just make it easier to align the pico? https://github.com/GregTurbo/Open-Frame1

Open Frame1 - Greg Turbo

Check out https://github.com/JulienBernard3383279/pico-rectangle

That you don't have to worry about that being the case. If you want to see the nitty gritty of how it functions, here is the pico rectangle ultimate DAC algorithm

My main concern is power. The rp2040+ supports simultaneous charging and use, but I also want to make sure I don't accidentally leak power back up the cable (especially to the gamecube, since this could break it). I followed the circuit diagram for the usb c breakout, but since I am using a battery pack I have some concerns. There is also the rp2040+ schematic available online.

if you're playing on console it's a different story, you'd have to either get a prebuilt that works on the gamecube or use something like pico-rectangle.

Pico Rectangle - Arte

It's easy enough to write your own firmware for a box controller, the software is already out there on Github. So it's not enough even if all of Hitbox, Hax, Goomy, Greg Turbo, and Panda are all on board.