I'm currently working on a vision based landing system to improve my drones landing accuracy.
That is why I would like to connect an Odroid U3 companion computer to my Pixhawk.
I followed this instructions.
Due to the fact that both of my TELEM ports are already occupied I chose to use the Serial 4 port for communication. This requires further steps though:
"SERIAL4 (port /dev/ttyS6 in software) is available, but will require adding a few mavlink application commands to your extras.txt file on the SD Card. See the mavlink (Application) page."
I already checked my micro SD card for the extras.txt file, but could not find it.
Is that because I'm running APM? I am stumped here :D
I would highly appreciate if anyone could help me to establish the connection.