Fit-StatUSB creates a COM port in your PC. The color of its LED can be changed to indicate issues/status/devices/recognize devices...


Step1: 

Verify which COM Port it creates (COM3,4...x) in Windows or /dev/ttyACM0 in Linux.


Step2: 

Test it:


    Windows:

    In Command Prompt:

    echo #FF0000 > COMX

    Fit-StatUSB should become RED


    Linux: (Ubuntu here)

    In Terminal:

    echo -n -e "#FF0000\r" > /dev/ttyACM0

    Fit-StatUSB should become RED


Step3:

Program as you like