Why Raspberry PI seeing two interfaces (ttyACM0 and ttyACM1) when connected via USB to Pixhawk4

Can anyone explain what are the two interfaces that I see on my RPi when connected via USB to my Pixhawk4? I am connecting Mavproxy to the first one (i.e. /dev/ttyACM0) and it’s working fine. Curious why there’s a second one (“if02”?) on /dev/ttyACM1.


Hello ,

It is mapping 2 serial ports on USB : One is for MAvLink and second act as a DroneCan gateway.

Just connect to PC and you will see the mapping and description of usage on Mission Planner