Also it was my idea to build the board and use the new SODIMM RPI to run the software (Single system image, load balancing,). The board I will design if it is legal, is a board with the SODIMM pi's clustered, the atmega328 to control the relays, and whatever sensors/outputs there are, and all of the pi's ports as well as it's own GPIO header. Thank you.
What are you talking about, and what does this have to do house wiring?