Question:
I assume I need diametric Magnets
http://www.first4magnets.com/diametr...gnets-32-c.asp
with North South polarity across the face, not North on one face and South on the other?
Only problem is they are 6mm but they may not be too large.
The Face-Face polarity magnets can be got in 4mm:
http://www.first4magnets.com/f343---...a10y-100-p.asp
Also if it helps anyone else I found the Leo Bodnar site fopr the sensors
http://www.leobodnar.com/products/BU0836X/