eBus converter for smart home with RPi and Openhab
Sometimes a small, simple project posted on Elektor Labs may lead to new discoveries. Take this one, a converter for connecting an eBUS to a Raspberry Pi. eBUS? Never heard of it. Searching the internet reveals that the eBUS is a multi-master, two-wire communication bus intended for heating and solar energy appliances. The bus is based on RS-232 but has the data signals superposed on a DC voltage, allowing connected devices to be powered from the bus.