Well there are several people selling rign magnet's on Ebay.
Try searching for "neodymium magnets" and see if anything pops up of
I've used different Allegro sensors from time to time. But I only used a
simple 1/16" or 1/8" small cylindrical
neodymium magnets. I simply drilled a small hole to hold the magnet and used
epoxy, RTV, or high temp RTV to
hold the magnet in place.
The Allegro gear tooth sensors work real neat too. They pick up the gear
teeth as they pass close to the sensor, makes for really nive high res
sensing too. You don't need a magnetfor them, as the gear tooth sensors have
it already built in.
Important Note: some sensors are south pole versus north pole sensitive,
make sure you have the correct magnet pole facing towards the sensor before
you glue them in. Otherwise the sensor won't work.
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