Well i decided to make a Laser-Tag system based on the Arduino. I want this to be as low budget as possible. Therefore i want to build an Arduino. (http://www.arduino.cc/en/Main/Standalone
) This costs about $5, that is why i want to build it. While thinking about this an idea came into my mind. I would be able to have twice the processing power on my custom board if i add another Arduino to it. I want to do this so one can focus about shooting and one about reciving and sending data. I have had trouble with the IR library, At first i tried to have one Arduino Sending and Reviving IR signals between itself. That did not work out, It did not receive the signals it sent. Now i am wondering, What parts can the Arduino share if there are TWO ATmega328 chips on one board. I mean like can they share the Voltage Regulator, Resistors, etc..
Can anyone help me out? P.S. If you know how to make the Arduino be able to send and receive IR signals between itself, I would be glad to hear it.