I need some help in interfacing two micro controllers. Suppose I have two atmega8 uc and I need to send a signal to another atmega 8, how do I proceed. I know the UART one, but it works for one to one I suppose. (Also read the uart tutorial). However, if I have 10 different atmega uc's and I need to make all of them slave's and controlled by one master, how do I proceed?
A step by step tutorial would be more helpful, or any links which can help me with it.