DIY arcade stick for pc engine?

I was browsing mmmonkey ,and came across this tutorial on how to mod an nes controller to pc engine.
I was wondering if I can use the schematic (without butchering an nes controller) to make my own arcade stick. Is it possible?
http://www.mmmonkey.co.uk/nes-to-pc-engine-controller-mod/

 

Yes. I've used a nes controller, but you can use an arcade stick.

 

Sure. That chip is what's used the original 2 button PCE controller so you can wire it to whatever contacts you want and that setup will work as a 2 button controller.

 

That's really cool !! I'm gonna give it a try !!

 

I also designed an adapter that will let you do this:
https://segasonicfan.wixsite.com/retro/uni-gen-to-pce

 

If you’re building an arcade stick, this is what you want:
https://oshpark.com/shared_projects/h16gYEWV

Author has 1P and 2P versions.