In the off-axis method, the magnet is not placed directly above the sensor, which can be any other position within reasonable proximity of the magnet. The placement is shown in Figure 3-5.

Figure 3-5 Off-Axis Placement

The output and angle changes of the X and Y axes are shown in Figure 3-6:

Figure 3-6 Linear Hall-Effect Sensor Off-Axis Output

Considering the installation of knobs and magnets in use, out-of-plane measurement method is common; take the cook-top knob as an example, as shown in Figure 3-7. The Hall sensor is under the knob, and the magnet is inside the knob.

Figure 3-7 Magnet Angle and Hall Sensor