I’m working on custom Android software to communicate and control a Quadplane running Ardupilot. Could you kindly recommend me any Java SDK or example code that can work with Ardupilot VTOL via mavlink? I tried mavsdk but it is only works with PX4, not Ardupilot.
Are you saying you are not going to fly by remote controller?
Mission Planner on Android is available and connect by UDP via Pi (long range wifi antenna) onboard companion computer with MAVProxy is possible. I have tried using PC mission planner + MAVProxy (Pi4B).