Adding PSP Bluetooth controller support | TechPowerUp Forums
PSP Pandora arduino emulator - YouTube
New PSP 2-Axis Analog Thumb GAME Joystick Module 3V-5V For arduino PSP Senior | eBay
I made a tiny universal Gameboy style game controller using and arduino, psp analog sticks, and my 3D printer. Works on Android, Linux, and Windows! : r/EmulationOnAndroid
PSP 2-Axis Analog Thumb GAME Joystick Module 3V-5V For arduino PSP M | eBay