End-of-shaft encoder; magnet; Hall?

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I've seen chips that can be used for angular position, with a magnet mounted at the end-of-shaft. I thought they were a type of Hall magnetic field sensor, and from Allegro. But I cannot find anything like it on the Allegro Web site. There were discussions here on 'Freaks, but I can't seem to find the right search words.

Does this ring a bell with anyone?

Lee

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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Look for Giant Magneto Resistance?

Imagecraft compiler user

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LOL--yep, probably one of those other "A" companies. I think it was Austria Microsystems.

Thanks much.

Lee

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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Have a look at this site. Bought one of the 10bit but have not had time to mess with it.

http://www.madscientisthut.com/S... / Robotic Sensors&user4=Rotary Encoder&xm=on