How to use a PS4 controller on Retropie? (the easy way) – RaspberryTips
configure_a_controller [Batocera.linux - Wiki]
The PS3 Sixaxis Controller Is the Best RetroPie Gamepad—Here's Why – Review Geek
Setup 8bitDo Nes30 Pro Bluetooth Controller in Retropie on Raspberry Pi Zero W and Pi 3 : 4 Steps - Instructables
8Bitdo SN30 Pro - Retropie How To Setup & Review - DestructiveBurn
How to Configure Your RetroPie Controller - Fastoe
Amazon.com: 2 Pack 2.4 GHz Wireless USB Controller Compatible with SNES Games, SAFFUN SNES Retro USB PC Super Classic Controller for Windows PC MAC Linux Genesis Raspberry Pi Retropie (Multicolored Keys) :
RetroArch PS4 controller setup configuration for PS4 LINUX - YouTube
HOW TO MAP PS4 & PS3 & PS2 CONTROLLER / CONTROLLER MAPPING on RetroArch - YouTube