I made a portable retro gaming console with a Raspberry Pi and Wii U Pro controller! : r/DIY
Game Boy Bluetooth Game Pad : 12 Steps (with Pictures) - Instructables
Instructions - DIY Bluetooth Gamepad
Game Boy Bluetooth Game Pad : 12 Steps (with Pictures) - Instructables
Game Boy Bluetooth Game Pad : 12 Steps (with Pictures) - Instructables
Speech-controlled Game Boy Advance : 9 Steps (with Pictures) - Instructables
Game Boy Bluetooth Game Pad : 12 Steps (with Pictures) - Instructables
Game Boy Bluetooth Game Pad : 12 Steps (with Pictures) - Instructables
Make Your Own Game Boy Android Gamepad - Instructables
Zero delay USB Joystick Encoder. – S-Config
GameBoy Pi : 7 Steps - Instructables
Retropie Gameboy zero upgrade. replaced my 3ds joystick with a joycon joystick and Added lcd backplate. pictures in the comments : r/RetroPie
Game Boy Bluetooth Game Pad : 12 Steps (with Pictures) - Instructables