Configure UART on Banana Pi M2 Zero

Before you begin

This documentation was written for the Banana Pi M2 Zero being wired this way:

Note: The GPIO pins here are wired to a telemetry cable into the Cube Orange. These are specifically pins 8 and 10 which map to UART3. This is important because by default, UART3 is not enabled on the Banana Pi.

Enable UART3

First, enter the command

sudo armbian-config

It'll cry about how internet is not connected. Just ignore the warning and hit enter.

You will see this screen upon entering armbian-config

Go to System -> Hardware

Navigate down to UART 3, hit space to enable it. Save and exit.