NEW 10 Foot Extension Cable for ATARI 2600 Controller Joystick NEW 10FT W/9 PINS | eBay
Atari 7800 joypad to MSX Adapter | danjovic | Hackaday.io
Atari joystick port - Wikipedia
A simple Atari 2600 joystick tester circuit
Project | Control Freak | Hackaday.io
Amazon.com: Retro Classic 3D Analog Joystick Controller for Atari 2600 Joystick, for Atari Flashback Game Control with Operating Button/Four-Way Joystick, for Atari Joystick with Games for Atari 2600 Systems : Video Games
9 Pin Joystick to USB Adapter
Building the Circuit | AtariFruit 2600 Joystick | Adafruit Learning System
Atari CX40 joystick - Wikipedia
USB Joystick Adapter from Retronic Design on Tindie
The Atari joystick Pinout Common Ground. - Atari 8-Bit Computers - AtariAge Forums
9pin Joystick Controller Cable for Atari 2600 Commodore C64 Vic-20 Ami – RetroArcadeCrafts
Atari 2600 Joystick Low Profile Switch Mod - YouTube