Red cable to GND (pin 6)
White cable to TXD0 (pin 8)
Black cable to RXD0 (pin 10)
From tweeting the DB9 connector,
Red cable = Pin 5 on female DB9 (GND)
White cable = Pin 3 on female DB9 (RXD)
Black cable = Pin 2 on female DB9 (TXD)
In Ekos I selected /tty/serial0. When connecting I see a yellow light for a while then it turns red and lists a timeout error. I tried 9600, 19200 and 115200 baud.
I have the serial port turned on through the GUI. In /boot/config.txt I see enable_uart=1. On the AVX side I did nothing special.
Suggestions on what could make this work? Thanks in advance.