SLYA092 June   2025 TMAG3001

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Z-Axis Pressing Offset Issue in 3D Linear Hall Sensor
    1. 2.1 Root Cause of X, Y Offsets in Z-axis Pressing Action
  6. 3The Z-Axis Pressing Detection Method
    1. 3.1 General Introduction of Proposed Method
    2. 3.2 Software Slew Rate Detection
    3. 3.3 Hardware Threshold Detection and Interrupt
    4. 3.4 Latching Method
      1. 3.4.1 Implementation of Two-Level Detection Method
    5. 3.5 Test Result
  7. 4Summary
  8. 5References

2 Z-Axis Pressing Offset Issue in 3D Linear Hall Sensor

In joystick applications, users often press the joystick in the Z-axis direction to engage the button press action. This press allows the user to indicates a single operation. For example, in a Gimbal camera, this action can enable the command to start recording or take a photo, and in a game controller, this action can also be considered as confirm. If during the pressing action, some offsets in the X and Y axes are created and sent to the MCU, this incorrect information can cause unexpected movements, such as shifting the center point of the screen in the Gimbal camera or incorrect menu commands.