desmondproj:
Yes, I set the baudrate to 57600 when I open the serial monitor. "Starting Cam-servo Face tracker" only appears in the serial monitor when the webcam is off. Nothing appears while Visual Studio and Arduino are connected.
If you have Visual Studio using the serial comms then you won't see anything on the IDE serial monitor.
The Visual Studio will be connected to the COM port, so the IDE cannot be connected at the same time.
Tom... 