Suggestions for a sensitive, hall effect sensor to be used with an arduino?
I'd like to find the an inexpensive, highly sensitive hall effect sensor. One that could possible sense a strong magnet from several inches away or within someone's hand if they were holding a strong magnet in their closed fist.
I am looking for a non-latching sensor that would trigger when a magnet is in the neighborhood - say at least 6". So the range and shape of the field of detection is important.
Imagine that we're playing a game of "which hand is the strong rare-earth magnet in?" I have a small hall-effect sensor hidden on my palm. What type of non-latching hall effect sensor would pick up the field through the hand from a distance of about 6 inches or more?