GitHub - JRodrigoTech/GameBoy-DMG-Button-PCB: Game Boy DMG button adapter PCB board with: D-Pad, Select, Start, A and B (with extra X Y buttons for Mods like GB Zero).
Button PCB | JOY Controller for Adafruit Feather | Adafruit Learning System
12x12x7.3mm Panel PCB Momentary Tactile Push Button Switch with CAP 5/ – Everything Pi