I've wanted to mod my Namco stick with the GP2040-CE so I figured the fastest way would be to create a custom PCB. It allows to use Sanwa, Seimitsu, and of course the original Namco buttons.
Parts needed:
- Raspberry Pi Pico
- 5-pin and 8-pin connectors are S5B-XH-A-1 and S8B-XH-A-1 (optional, you can just solder wires directly to the PCB)
Required only if you want the USB host functionality:
- R1 and R2 are generic 22R 0603 resistors
- F1 is MF-PSMF050X-2
- USB-A uses a generic footprint, most through-hole USB-A connectors should fit just fine
Information on how to flash the Pico - https://gp2040-ce.info/installation
You'll need to change the button layout, so remember where you wire PIN17, because by default it's "S2", which is required to enter the Web Config.
Enjoy
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