From a circuit point of view, a LoRaWAN node combines a microcontroller and LoRa transceiver. Although there are numerous commercial LoRaWAN sensor nodes designed for "industrial use," that should encourage rather than deter the keen experimenter. In this article, Elektor book author Claus Kühnel shows the relative ease of making three Dragino sensor modules “talk” within a LoRaWAN.