Imaging Magnetism with a Hall Effect Camera(hackaday.com)
hackaday.com
Imaging Magnetism with a Hall Effect Camera
http://hackaday.com/2017/08/07/imaging-magnetism-with-a-hall-effect-camera/
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http://hackaday.com/2017/08/07/imaging-magnetism-with-a-hall-effect-camera/
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