I came across another sensor which people seem to have used
successfully - US5881LUA-ND and the SMT version costs $0.41 from Future!!
The datasheet says it is a low magnetic sensitivity unipolar Hall-effect sensor. Perhaps it could be more suitable for use with a stronger
Nd magnet?
http://www.cnczone.com/forums/showthread.php?t=71155
http://www.cnczone.com/forums/showth...t=31601&page=5
http://www.turningaround.org/MechMate/Mechmate.htm
Datasheet -
http://www.melexis.com/Asset/US5881_...Link_4824.aspx
Pinout-
Pin 1 is Vcc
Pin 2 is Gnd
Pin 3 is the output