Thanks for the helpful information i’ve received in the past.
I am now facing a new challenge and hope for your support once again 
I am using a drone with a companion computer (Raspberry Pi) equipped with a camera to detect aruco-markers and calculate their coordinates for precision landing. My goal is to send these calculated coordinates directly to the flight controller via MavLink and UART connection.
My questions are as follows:
-What settings do I need to configure in Mission Planner to ensure that the flight controller correctly receives the data via MAVLink?
-Are there specific parameters or configurations I need to consider to optimize communication between the Raspberry Pi and the flight controller?
-What steps are necessary to ensure a stable connection via UART?
-I would be grateful for any additional tips or suggestions you may have.
I look forward to your response and thank you in advance!
Best regards