What is the general method for 'doing something' after a period of user inactivity in tkinter?  In my case the 'do something' will be to go to the start screen (tk.frame) that is already instantiated.
I will admit that I have no experience in this, but maybe a sort of watchdog timer could work?  A timer would count up to your desired time, but anytime an element is activated it would reset the counter.  This concept is used in micro-controllers a lot but I'm not sure how you would apply it to python.
do something after a period of gui user inactivity tkinter