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Subscriber John Schuch writes:

Threads on the MAKE forums often touch on hall effect sensors for measuring current, position, speed, etc. I just got this link in an email this morning and think it’s pretty cool. Gotta love free technical training.

This is a sponsored tutorial on Digikey, sponsored by Honeywell, and promoting Honeywell’s line of magnetic sensors, but there’s still good info here. And the narrator sounds vaguely like Fox Sports announcer Joe Buck, if Joe Buck were a deep geek.

Magnetic Sensors

Gareth Branwyn

Gareth Branwyn is a freelancer writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor for Boing Boing and WINK Books. And he has a new best-of writing collection and “lazy man’s memoir,” called Borg Like Me.


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