This is a drop-in replacement for the existing PCB in a Hori Fighting Stick V3 (Not the RAP V3-SA). You should be able to just unplug the existing cables in the stick and plug them into this board and get playing.
There are two caveats:
- It does not support the auto-fire sliders at all.
- There are two revisions of the FS V3 stick
If your stick has four connectors on the PCB, this will work. If your stick has two connectors on the button board, one running to the main PCB and one running to the top AUX panel) it will not work.
This board is untested but I've checked everything about 400x and I'm pretty confident it'll work fine.
The connectors used in this stick are clones of the JST PH-series connectors, made by LHE. The GP2040 board used is a Waveshare RP2040 Zero.
This is my first PCB design, if you can see any errors or ways to improve it, please let me know. The attached zip file includes the gerbers, enough that JLCPCB has no trouble generating a board from it.
There are no restrictions on the use of this design, do as you like with it.