Having established general expectations of what output is needed for the design, the iterative process of finding the exact placement regions can now be executed. TI offers a Magnetic Sense Simulator to facilitate this process. This tool has a main menu, where the user can specify the type of magnet movement. The user selection then takes them to a sub-menu with entries to specify magnet placement, sensor placement, range of motion, and device of interest. Figure 2-9 shows the top menu and the Rotation movement sub-menu.

Figure 2-9 Tool Menus

Figure 2-10 Tool Menus

For the two-sensor thumbstick, the inputs required for the desired behavior are shown in Figure 2-11.

Figure 2-11 2 Magnet and Sensor Thumbstick Input

Figure 2-12 2 Magnet and Sensor Thumbstick Input

Figure 2-13 Tool Output for 2 Sensor Thumbstick Input