- Open the Arduino IDE
- Go to Files > Presettings
- Add the following URL to Additional Board Manager URL's: https://raw.githubusercontent.com/samuel-puschacher/arduino-boards/master/package_thethingsproducts_index.json
- Click "ok"
- Go to Tools > Board > Board Manager
- Search for "TheThings" and Install the Devices
Now you will find "The Things UNO" and "The Things Node" in the Boards list