Custom Bluetooth Atari Joystick (Original) : r/RetroPie
Amazon.com: Microsoft Xbox Wireless Controller and Cable for Windows - Cable for Windows included - Wireless - Bluetooth - Xbox One exclusive - 9 ft cable length : Video Games
Controller:Atari VCS Wireless Classic Joystick - PCGamingWiki PCGW - bugs, fixes, crashes, mods, guides and improvements for every PC game
Make a Bluetooth Atari Joystick for Your Raspberry Pi Recalbox - Hackster.io
I made a Bluetooth Atari 2600 controller using an 8Bitdo Zero. : r/retrogaming