Build your own IoT gateway for your sensors and also you can join to The Things Network, community IoT network. This tutorial describes the using of OrangePi Zero and IoT transceiver RAK831 module.

Miroslav Prymek shared success with OrangePi Zero and RAK831 on google plus. He built own gateway and joined to IoT network called The Thing Networks (TTN).

Miroslav used the detailed tutorial by Ed Smallenburg.
In the PDF file (also available in docx) you find:
How to configure OrangePi Zero
What you have to change in armbian operating system
How to set WiFi access
How to enable SPI bus for RAK831 module
and How to edit the configuration file of software

The tutorial is available on: https://github.com/Edzelf/RAK831-LoRa-gateway