This button PCB is for the Gameboy Pocket to make a Gameboy Zero or an Arduboy.
You find pictures in the PCB pictures folder. Also, a pinout for the header is there. I'll add text on the PCB in the next revisions.
If you have any questions, improvements or updates about this project feel free to send me an e-mail. The e-mail address is pinned on my profile.
Keep in mind that I'm not a native English speaker. If you can speak German you can send me an e-mail in German.