Using Hall effect devices to detect distance from magnet

Community General Discussions
, ,
1

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

The eybrow can move up or down  abot 10mm total distance.

I want to beable to measure an approx distance between the hall effect and the magnet.  I have used hall effects before but only in a ON/OFF capacity.. not a linear sensor one.

Any suggestions be wonderful.

Many many thanks
Dave

2

Hi

 

    Something like this?

   - http://bildr.org/2011/04/various-hall-effect-sensors/

   - https://vimeo.com/4061697

3

Many Thanks

Hi and thanks for that. It will give me a good starting point

 

Dave