Thanks for the quick reply, guys. So, just to clarify: If I plug a 9V wall wart into the Arduino, each pin will still only give off 5V. But if I come out of the VIN pin for power, I will be getting 9V? I guess I should make things a little clearer by explaining what I'm trying to accomplish.
I am making a cicle of 14 LEDs that have the following specs:
Ultraviolet LEDs
FW Current: 20mA
FW supply: 3.3V
I want to program this ring to create different patterns of LEDs blinking on an off, etc. Since I will have 14 LEDs at 20 mA each, I will need to provide 280 mA for them to function, right? Or will I need a bit more to power Arduino as well, and, if so, how much more? I am also trying to make this portable, so I am looking for a battery alternative. What would the specs of the battery pack need to be (minimum) to provide enough power for the Arduino and these 14 LEDs? Anything higher than 5V the Arduino just burns off as heat to keep it at 5V, is this right?
Is there a book or website that would explain all this? I have been reading all the Arduino stuff I can find but it seems hard to find a good, solid explanation of how it handles various power sources.
Thanks again guys.