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IoT Gateway and Wireless Nodes

Part 1: The hardware

IoT Gateway and Wireless Nodes
Sometimes you want to have specific functions in a home automation system that are not available with any commercial product. That’s why the author decided to develop his own system, which features wireless communication between the various nodes and the central gateway. The gateway uses MQTT to send measurement data to an OpenHAB server, which processes and displays the data. His project has now been copied and extended by other users. In a series of two articles, the author describes the key elements of his system. More detailed information and the corresponding software are available for free on the Internet.
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