UPDATE] Converting the “Competition Pro Extra USB” to C64/Amiga/Atari DB9 – pagetable.com
Competition Pro USB Joystick +Game-Collection 99 best of C64 Classix | SL-6603-TWT
3D-Printing a Joystick and a Paddle Controller (While Waiting on my C64 Parts)—Sven Krasser's Blog
Didn't like the official C64 USB joystock, so I made my own "pro" one using actual arcade controls! WIP but it plays soooo much better. : r/3Dprinting
The C64 Joystick (Electronic Games) : Amazon.co.uk: PC & Video Games
C64 Joystick Adapter - Share Project - PCBWay
retro-bit The C64 Joystick (Mac, PC) - buy at Galaxus
THE C64 Micro Switched Joystick (USB)
USB Joystick Adapters – breadbox64.com
C64 Mini Is Great With A Quality Controller! SpeedLink Anniversary Edition Competition Pro Extra! - YouTube
The C64 Mini Review - IGN
USBJoy2.0 - adapter. Connect your Atari Amiga C64 joystick to PC! Develop your own usb device! - Polish electronics for 3D printers, CNC, robotics, retro computers
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
C64 USB Joystick Adapter
The C64 Micro Switch Joystick - Clear (Electronic Games) : Amazon.com.au: Video Games
How to Convert Any Commodore Joystick from 9-pin to USB using The C64 Joystick - YouTube
C64 USB Joystick Adapter
Joystick - C64-Wiki
iNNEXT USB Game Controller Review - Lyonsden Blog
Competition Pro USB Joystick +Game-Collection 99 best of C64 Classix | SL-6603-TWT