Interlink Electronics Micro Joystick - Manual (Page 4)

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2
MicroJoystick
Integration Guide
3.0 Theory of Operation
When you place your finger on the top of the MicroJoystick, the pressure exerted by your finger is
transmitted to the 4-zone VersaPoint® FSR sensor located in the joystick’s base. The 4-zone
sensor consists of four overlapping zones designed to produce smooth, light cursor response.
The force distribution over the four zones is immediately converted by the microcontroller into
cursor movement in the direction of applied force. The micro-controller’s dedicated firmware
optimizes the cursor’s speed response and accuracy; the result is smooth cursor movement in
any direction, from a precise crawl to a screen-crossing zip.