Hi, first time posting and just wanted to say thanks for having a support community like this!
I am trying to setup my new quad that has a PixFalcon running with an Odroid XU4. When I try to setup the PixFalcon on its own (nothing connect except for USB going to my laptop running Ubuntu 18.04 LTS), I get the following situation:
All QGroundControl connections to vehicles must be disconnected prior to firmware upgrade.
Please unplug your Pixhawk and/or Radio from USB.
Plug in your device via USB to start firmware upgrade.
Found device: PX4 FMU V2
Error: Open failed on port /dev/ttyACM0: Permission denied
Just to reiterate, just trying to do initial setup (my goal is to get it flying RC soon). Any help would be appreciated!