Atari 2600 Trakball question

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Posted by Tehrasha on 29, 2000 at 4:47 PM:

Are the old Atari 2600 trackballs optic? or do they use hall-effect to 'see' the metal blades passing through the sensors?

Arcade trackballs have optic wheels with many many holes in them, these only have a few large blades.

--Teh

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