switch-arduino-controller VS GP2040-CE

I'm also looking at the possibilities of [this project](https://github.com/VinDuv/switch-arduino-controller) from VinDuv for Arduino. This one is interesting, as I would love to have it be USB, and I already have the pins set for the Arduino Mega right now. The tricky part is I know very little about ISP programming on the Arduino, which I guess you need to replace the firmware on the 16u2. Looks like I would need to shell out about $14 for a USB to UART adapter. Also, these directions are confusing af. Also, there isn't code for the fight stick part that involves how the various tilts and recovery angles are going to work.

All you need is an arduino and you can wire up any sort of input device you want pretty easily. There is libraries like Uno R3 (it's outdated now probably, or maybe not but its the one i know of), that make it a very simple process.

The arduino can send inputs to the switch over USB. https://github.com/VinDuv/switch-arduino-controller

If you're making a home made arcade stick, check out the GP2040-CE project - https://github.com/OpenStickCommunity/GP2040-CE

It's got low latency and good compatibility for a bunch of platforms. Even some compatibility for PS4.

My advice is to rework your mixbox, as it is pretty much the only long-term solution. Personally, I would swap out the keyboard microcontroller and instead wire your keyswitches to a PiPico running the GP2040-CE firmware. That way you can easily remap the keys, as well as select between your controller acting one of these:

Talking about RP2040 powered controller firmware. GP2040 is an amazing project, which is used a lot in the Fighting Game Community where custom controllers are common. https://github.com/OpenStickCommunity/GP2040-CE

you can connect to it the same way as a brook pcb (without soldering), and its firmware is far more customizable with great input latency test results. you can read about the firmware here: https://github.com/OpenStickCommunity/GP2040-CE

congrats on the build & thank you for sharing your experience! if I may suggest you to take a look at the open source project using the Raspberry Pi Pico and other boards based on the RP2040 microcontrollers. https://github.com/OpenStickCommunity/GP2040-CE

In theory, one would only need to use the Pi Pico (Using the CP2040-CE Firmware), since many play fighting games on PC; At least, that I am aware of. This, along with a few other things, would make it an "okay" controller at best, IMO.

I suspect GP2040-CE will pretty soon have some capability to switch between profiles on the fly, though of course you can never predict these things with volunteer open source development. In any case, I'd recommend GP2040-CE as an option over the Brook. You can buy a Pico breakout such as this one for cheaper than the Brook & have access to all sorts of cool features now and in the future.