PaulS:
Those samples and posts were a bit old. From 2010 and earlier.
So? If it works, it works. Age doesn't cause code to rot, you know.
No, but I've found some programmers can cause code rot, or is that just from my own programming efforts.
We have got +-4,,,+-8 counts of noise in the results.
Not likely caused by the CPU itself.
I would test with analog input pins first grounded and then wired to Vcc and see if there is any count variations. Always suspect external electronics causes first until proven otherwise when dealing with the analog world is my rule.
Lefty
