Atari pioneered the use of Hall effect joysticks in the arcade I Robot from 1983. I think they had a patent on it at the time. There are interesting stories on

Atari pioneered the use of Hall effect joysticks in the arcade I Robot from 1983. I think they had a patent on it at the time. There are interesting stories online about the problems they had. They were stumped by a game at a specific location that kept going haywire and requiring recalibration. Kept sending engineers out to fix it over and over. Turned out the arcade was next door to a scrap yard with one of those big magnetic cranes, which was completely messing up the sensing. [1] [1] https://www.rotheblog.com/2009/06/arcade/transcript-from-rusty-dawe-chat-at-coinopspace-com/ https://www.rotheblog.com/2009/06/arcade/transcript-from-rus...