I want to make a device to send and receive data using the main power line, and I want it to be compatible with the X10 protocol, but i have no resource on the circuit and I don't know how to inject the data to the main or receive it.
I know about the protocol and the theory, but I have nothing practical to begin with, so any circuit schematic or basic how to will be of great help for me to get a kick start.
I am planning to make a device around AVR micro controllers that can send and receive data over power line with the X10 protocol.
What I would like to know about at this point is how I can inject my data to the main line.
Edit: creating a 120kHz is easy, but transferring/inducting/injecting it to the main line is the problem. I don't know how to do it. what is the right way to do it? I thinks it's called coupling but there are many kinds of coupling and i don't know which one to use.