I'm not sure how, but I came back and turned everything on and now the voltages are returning near perfectly. A 6V battery, 9V battery, and my power s...

@DaveE So you are saying if I'm using an external reference of 4.096 and I apply 5V through a voltage divider to an analog pin it will damage the Ardu...

@will Oops, missed that when I copied: #define ANALOG_IN_PIN A0

As frustrating as this gets, I'm sincerely enjoying the project and all I'm learning. @Will and @DaveE, thanks for all the input and help. Something...

@will Ok, this is what I came up with (sorry, a bit sloppy). The code doesn't really work (I've only coded for the 2K resistor to start), but this is ...

@will I like the way this sounds. I'm going to look further into shift registers.

@will This sounds interesting, I'll look in to that. Thanks.

@ronalex4203 I am copying it for the most part (for an Arduino Uno) minus the rotary switch implementation. Yes, I agree about the unnecessary code. A...

@ronalex4203 If I typed 330 ohms somewhere than it was a typo. I understand what you are showing me, this isn't quite the same thing. I want to implem...

@will That's 33 OHMS. 31.1 OHMS is close enough in my opinion. The polarity thing is my mistake, sorry. You aren't getting it. That would mean I hav...

@will Well, seeing as this has worked in countless other demonstrations I've seen, I assumed that setting pins to INPUT worked. I guess not. So unless...

Here's an example. The D2 cannot be replaced with ground, as it will be used by another pin connected to that column later. Unless someone knows a way...

@ronalex4203 As mentioned in the above post, the code has been stripped down here. Yes, there will be additional connections being made to this termin...

@will The D2 will not always be high. When something else is using that terminal D2 will be INPUT. That's the idea, at least. The pinModes are outside...

@davee Thanks much. I've stripped this down as far as I can to show what is actually happening. I'm trying to measure the value of an "unknown" resist...