Roklan Track Ball.

[King Atari]

I have a Roklan Track Ball (used to have 2, broke one, oops). I haven't seen one in any thrift shops or on ebay (but I haven't looked for them specifically on ebay). Is it worth anything? Anything interesting about it?

[Alex]

It's called the Roklan Unroller Controller. It's not actually a track-ball, but a joystick with an unusual interface, notice it doesn't rotate all the way. They're fairly unique, and not too common, but they don't usually sell for a lot when I've seen them on Ebay. Maybe $5-$8 each as a guess. If you collect controllers they're a pretty good find.

[King Atari]

That's cool. I've been wondering about it for awhile, I probably won't be playing "Centipede" with it, though.

[Genki]

Also early Macintosh mouse and Commodore 1350 would work in the similiar manner to joysticks. Note, C64 mouse model 1351 is similiar but doesn't work quite right on non Commodore systems.

 

And the early macintosh mouse used odd port interface (male rather than female) so you will need to build a small adapter with 2 female 9 pin connectors.