Console via MAX3232

The RTL8186 is a 3.3V Processor, so you need an MAX3232 to connect to the UART Console.

The connection settings are 38400 8n1
The Pins are assigned like the following Table.
+——————————+
|       |                      |
| +3.3V |  IN     GND     OUT  |
|       |                      |
+——————————+

UART Console

UART ConsoleLevel Converter

Level Converter

Level Converter