Strange Oscilloscope Reading on Nano

[DVDdoug]

@mojave_dean

I tried an unprogrmmed Nano and it was very similar, though some values were different.
The only time the outputs stop, is when I remove the, single digital input.

I don't know what happens when you "unprogram it". It's always going to run whatever is in the memory.

How about if you load a program that writes all of the pins high or low and does nothing else.