However, no matter what I try, I cannot SWITCH functions using the JSON commands specified over the serial interface.

To verify the serial transmit / receive operation. I have entered the Python Notebook mode. and I can successfully transmit and receive strings over the serial port functionality.

I believe, either the given JSON commands are not accurate, or there is something else missing:

Here is an example of what I send:

For camera stream: {"function" : "Camera Stream" , "args" : ""}\n

For motion tracking: {"function" : "Motion Tracker" , "args" : ""}\n

Please advise what I am doing wrong.

Thanks