Hi , first of all I have to say that I start to work with pic programming 1 month ago so if my questions are too simple or stupid for you , please forgive me. I want to connect 5 pic together , 1 master and 4 slave. Slave pic receive data from sensors and when master ask they have to communicate value to it and receive order from master. I want to develop all with I2C communication protocol because every pic is few cm from other and I think it is simple to make without use of other component and using only 2 cable. I studied some example of communication between pic and device that communicate with I2C protocol. But I don’t understand how to differentiate one pic from an other , how to give an unique identification code. So when I m calling a pic the answer is only from the right pic. I don’t know if it is an hardware or software problem. I like if some one can help me to solve this problem and can show me so code example to make communication. After of all I want to know how is the right way to connect pic together. Thanks you in advance.