Main telemetry loss after 2h on Quadplane

Hello

We work with Arduplane 4.4.3 on Cube Orange.

We fly our drone for more than 2 hours, and regularly lose communication after this time.

To recover communication, we have to systematically restart the drone (and therefore the autopilot).

We use TELEM1’s UART, with a speed of 115200 and Mavlink 2 protocol.

We diagnosed our entire hardware transmission chain, and didn’t find any problems there. Today, we want to understand how the cube works in terms of communication, and the possible possibilities of saturation of the UART communication bus and buffers.

Thanks