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Figure 13: Add additional board manager URLs
4. Restart the Arduino IDE.
5. Open the Boards Manager from Tools Menu.
Figure 14: Opening Arduino boards manager
6. Write
RAK
in the search bar, as shown in Figure 15. This will show the available RAKwireless module boards
that you can add to your Arduino Board list.
7. Click on the area highlighted in blue to select RAKwireless RUI STM32 Boards. Install the latest version of the
RAKwireless RUI STM32 Boards by clicking the Install button.