Hi to all,
I would like to build a project that I can have on one place 12 or more switches on/off and on another site I have 12 or more relays to switch some consumers.
Bettwen switches and relays Will be long distance 10meters or more and I would not like to have allot of cables bettwen.
I would use First arduino for switches - digital inputs and Second ona for digital outputs and bettwen arduinos for comunication I would use smaller number of wires.
Is it possible to solve that problem with two arduinos and 2 wires like CAN bus Hi,Lo, or something easier ?
Thanke you in advance for your answers.