ADVANCED COMMODORE C16 / PLUS 4 / TO C64 / AMIGA JOYSTICK CONVERTER ADAPTER | eBay
Using Modern Nintendo Controllers On The C64 | Hackaday
UPDATE] Converting the “Competition Pro Extra USB” to C64/Amiga/Atari DB9 – pagetable.com
New Commodore 64 C64 Joystick Joy Switcher Circuit Plus PS/2 Mouse Adapter #733 717526182829 | eBay
USBJoy2.0E adapter - Extended Version. Connect your Atari Amiga C64 joystick to PC! Develop your own usb device! - Polish electronics for 3D printers, CNC, robotics, retro computers
Retronics USB Joystick Adapter and Other Coolness with V-USB | Code and Life
Commodore 64: 30 Games in One Joystick
Converting the “Competition Pro Extra USB” to C64/Amiga/Atari DB9 – pagetable.com
C64 USB Joystick Adapter
Retro 9 Pin Joystick to USB Converter : 4 Steps (with Pictures) - Instructables
Adapter for Atari / C64 to Tandy Joystick from Cybernetic Systems on Tindie