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Building a Hall Effect Gear Tooth Sensor

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or a

Ferrous Object Position Sensor

Figure Eight:   This is the schematic of the sensor electronic circuit board shown in Figure Three.

Figure Nine:  This is the front view of the Hall Effect sensor assembly showing how the Hall Effect IC fits between the two magnets.  The Hall effect IC leads are bent at a 90 degree angle and soldered to solder pads on the bottom side of the board.   Most Hall Effect ICs all use the same pin-out which looking at the front of the IC, the left lead is the +Vdc input, the center lead is the Ground lead, and the right lead is the Signal Output lead, but you should check the actual specification sheet before making any connections to the Hall Effect IC..

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