Good to hear it is good code. 
It is a starting point and of course it can be modified as you wish. I am using a 5v, 4a power supply and so far no issues. Yes, it stops after awhile and can be modified to loop. I am also going to modify it to start with the power button, so I don’t have to ssh into it each time.
I find it a fun platform to work with and develop other interesting projects (I’ll post).