Hi all. I m facing a serious problem between communication of 2 arduinos with each other. I am trying to communicate breadboard ATmega328 @ 16MHz (same to arduino & with bootloader 
) with I2C. But there is no any response form both arduinos. I have also tried to make serial communication with PC using FTDI on duemilanove with my breadboard ATmega328. Now i am getting unknown symbols at serial monitor :~ 
. So please help me about this.
Thank you.
I have the same problem. But a bit different. When I connecto 2 Arduinos, they work I made a PCB for 1 Arduino direct mount and one Atmega328 with 16MHz crystal. The i2c comms doesn't work in that PCB. 