Computer GUI to Control Arduino/Adafruit

Hi Paul, I can see having a connect button, but would the baud rate be something changed often, or set once when the connect button would be pressed. I can see the need for setting the port because there will be 6 USB cables plugged into the laptop after it gets bolted to the scope (the computer does not stay attached when not observing) and they could be switched to different ports than the previous time. Is auto port detection an option?

Best,
Steven