Two separate quads had remarkably similar problems running version to version 4.1 at the exact location.
Short version: Quad goes into LAND mode and goes up uncontrollably. (log attached)
- First quad: This one had been flying for two or three months. A low-quality board (omnibus f4 pro clone). It was a quad racer and flew very well. After bouncing on the ground due to a lousy maneuver, it started to climb and climb and never came back… We lost the camera feed at an altitude of over 1000m++ above the ground.
As the quad was not mine, I have no previous logs; I just witnessed that the OSD screen informed that the quad was in LAND mode while climbing out of control.
- Second quad: This is mine, and the log is attached.
This quad uses a Matek h743 slim and was flying very well. After I removed the anti-vibration plate, I went to test it, and the vibration definitely became a problem.
From the log, I understand that the vibration was responsible for the EKF switching and the subsequent switches to LAND mode.
However, I do not understand why the quad shot upwards at both LAND mode times.
Please, can someone help me with the interpretation? Could both quads have the same problem?
Obs 1: the flying field is approximately 1km above the sea.
Obs 2: the RTL and althold modes in the log were tentatives to get the quad back to home.
Obs 3: The quad is fine!