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Using Hall effect devices to detect distance from magnet.

Hi Folks.
I have been searching for this on Google but have not yet found a decent example.

I have a small neo magnet that is on a flexible surface - lets say under a  bandaid on an eyebrow.

I have a hall effect sensor mounted 10 to 15mm above the magnet on the forehead. It is actually mounted in a mask sitting on the forehead so that the skin movement does not effect it. So it will be a fixed reference point

Creates and indicates a random number
The Chaot is my contestant for the LMRv4 Donor Appreciation Robot Challenge.  The machine creates a random number using physical chaos and combines the random … Read more