I would like to connect 3 devices together into a central control unit. How can I do this without using Wifi?
There is no Ethernet or Bluetooth capability so it’s either WiFi or you could possibly send data serially through the USB connection. But WiFi is the way to go.
To aggregate data from multiple IoTaWatt most folks setup an influxDB server on the local lan and have the IoTaWatt units upload to it.
It’s open source so you are free to explore whatever ideas you may have.
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