Ok, so I've designed a smaller arduino circuit then my last one. It's pretty much meant to be an LED controller and that's it, so I don't need the 5v for extra circuits or anything. I've only got a few small questions.
1. Do I have to do a special bootloader?
2. Should I attach a 3.3v line to the Aref for buttons/knobs?
3. Being that the led's are tolerable up to 3.5v, do I even need to use resistors on it? Seems kind of pointless if it's within the voltage range. (If the arduino were outputting 3.5v and higher, there'd be something wrong with the arduino if it only had a 3.3v input right?)
That's it. I don't think they are that hard of questions.