I am thinking about building a circuit that is literally going to take 11 of the 14 digital pins of an
UNO to communicate with an SD card and an external EEPROM chip (EEPROM programmer).
Using 4 shift registers and the SD card, I will have 1 digital pin left. Well, I'm also reserving pins 0/1 for serial communication.
Anyway, I need to read some external buttons and I have the 6 analog pins that I haven't touched.
I will only need about 4-5 push buttons in my design so they should fit nicely on A0+.
So, my question is, will I run into any issues doing this? Or, are the analog inputs better left for true analog reading?