Hi!
I have a couple of these linear hall effect sensors AH49E.
I then followed this http://www.arduino.cc/playground/Code/HallEffect
The magnets I am using is from a grinder and a refrigerator (sitting on the door to hold up pictures).
Is the magnets to week? Cuz I don't notice any big changes, e.g. can't get the north-pool to show up.
MM: 710 = B in Gauss: 405 South-pole
MM: 710 = B in Gauss: 405 South-pole
MM: 710 = B in Gauss: 405 South-pole
MM: 710 = B in Gauss: 405 South-pole
MM: 710 = B in Gauss: 405 South-pole << Now letting the magnet touch it
MM: 711 = B in Gauss: 407 South-pole
MM: 708 = B in Gauss: 401 South-pole
MM: 710 = B in Gauss: 405 South-pole
MM: 710 = B in Gauss: 405 South-pole
MM: 712 = B in Gauss: 409 South-pole
MM: 709 = B in Gauss: 403 South-pole
MM: 709 = B in Gauss: 403 South-pole
MM: 711 = B in Gauss: 407 South-pole
MM: 709 = B in Gauss: 403 South-pole
MM: 710 = B in Gauss: 405 South-pole
MM: 710 = B in Gauss: 405 South-pole
MM: 712 = B in Gauss: 409 South-pole
MM: 707 = B in Gauss: 400 South-pole
MM: 710 = B in Gauss: 405 South-pole
MM: 708 = B in Gauss: 401 South-pole