Originally Posted by Mad_Professor
Wow that's crazy.
I'm ordering my stuff from digikey.
But I don't know what kind of inductor I want?
I'm guessing the one I want is going to be "FIXED" but there are so many variables and types, Half the stuff in the columns doesn't make any sense to me.
Also does AREF need a ceramic cap?
I just checked the datasheet for the ATMega168 microcontroller. It is a bit confusing, however it says that analog reference voltage can be set to either AVCC, 1.1V or an external voltage connected to the AREF pin. For your case, I would suggest that AVCC is the most appropriate setting (and probably the default configuration). The datasheet does also say that you can connect AREF to ground using a small capacitor (the ceramic capacitor you are talking about) for greater noise immunity.
Therefore I would say it is up to you whether you place a capacitor there or not. I do not think it will greatly affect the operation of the circuit for your purposes.