My Trak-Ball arrived in the mail yesterday. Testing it out with Missile Command hacked for analog trackball input on my Harmony cartridge. This is so much better than using a joystick! :
Alfa Data TRACKBALL - Amiga, Atari, Commodore TKB-MT-AC | eBay
Technically Distracted: Vintage Atari CX22 Trak-Ball with USB interface.
Atari 5200 Trak-ball Controller
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Trak-Ball | Atari Wiki | Fandom
Purchase a Trak-Ball Controller for your Atari 8-Bit Computers and the 2600 Video Game Console (10-15 mins) – Atari Projects
Atari Compendium
Atari 5200 Trak-Ball - Consolevariations
Atari Trak-Ball Controller | Video Game Hardware | VideoGameGeek
Vintage 1983 Wico Command Control Trackball for for Atari Commodore Sears Model 72-4545 Complete With Manual and Original Box Tested - Etsy UK
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