Arpad Toth has released the results of three years of research on the Universal Powerline Bus (UPB) home automation system. This system is widely used in Europe for control of home lighting and other applicances and appears similar to the X10 systems. Arpad’s article titled “Cloning the UPB home automation system” details the reverse engineering of the device’s hardware and firmware and his construction of a homebrew control unit.
Manufacturer’s documentation on the UPB can be found in this 68 page PDF.
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