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PS1 Namco Arcade Stick Mods

NPC-102.jpg


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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This took some time. I made the mistake of ordering the buttons from Aliexpress thinking they would somehow end up being legit; they were obviously counterfeit. I just got the legit ones from SmallCab and immediately modded the stick:

namco.jpg



Here is my GP2040-CE pin mapping:
s.png
 
RGB said:
This took some time. I made the mistake of ordering the buttons from Aliexpress thinking they would somehow end up being legit; they were obviously counterfeit. I just got the legit ones from SmallCab and immediately modded the stick…
Click to expand...
Nice! Do you offer this PCB for sale?
 
For years I used a Sanwa JLF 2lb. spring in this stick, but it was starting to feel too heavy given the throw distance, especially for fighters. I swapped in a Seimitsu LS-55 spring, and I really like it. It's a better fit since the diameter is much closer to stock than a standard JLF spring, plus it's just slightly stiffer than a JLF 1lb., so it's better for shmups, which I tend to play more of on PS1 than fighters. It's fine for fighters too, unless you need that stock JLF broken-in feel. Hopefully this helps folks in a similar situation.
 
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