I need some help, I'm trying to interface a Melexis MLX90217LUA Hall Effect/Gear Tooth Sensor to an ATmega16L resting on an STK500. I've attached a wiring diagram. The problem is, I think I'm misunderstanding how the sensor works, I've tried passing both poles of moderately powerful magnets as well my steel knife blade in front of it to no success. The voltage on pin 3 (VOUT) never comes up from 0V, thus not triggering the AVRs rising edge interrupt. Nothing I can think of trying causes any reaction on the output pin. Ideas please? Any further information I can provide? Thanks.