I am using an ID2 RfiD reader and a blue Smirf as a serial over bluetooth conenction to stream the data to a PC. At present I have it breadboarded up and is running from 9V battery going through a 5V regulator to bring it down.
I really want to run this off as small a power source as possible, (ideally coin cells) I know that the bluesmirf will run on 3.3V and the ID2 needs 4.6V, I hav tried to use two 3v Coin cells but it does not provide enough juice :?:
Does anyone know how I can get this set up to run from coin cells (or a power source of equal size)
What is it that the 9v battery supplies that the coin cells are not capable of doing? (I am aware that may be a stupid question, but its something I dont have the answer too)
Hope someone can help me!!!