One telephone cable goes through all devices that are connected. Therefore, I chose the serial bus: Old school RS485 with a master-slave-communication. In my usecase Ethernet needs more hardware like switches and cables and consumes more energy. As I prefer a wired connection the choice is between Ethernet and a serial bus. ![]() So this is nothing new and first of all it’s about choosing the right connection and data protocol. My idea is to build a data communication for sensors like temperature sensors and actors like motorized valves to control the heating system of my home.
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