@patmolloy In this moment there wasn't support by arduino.
You can only access by AT-Commands.
But it would the best choice if we can access the tracker or sensor node directly by arduino.
I hope RAK listen to us
Most LoRa modules work with an operating voltage between 2.1V and 3.6V. Are there any components used in the RAK811 (like the TCXO) which have a limited operational voltage?
A lot of LoRa applications are battery powered and using primary lithium of 3.6V. The power circuit can be kept simpler (saves costs) when the operational voltage of the LoRa module has a wider spec!