Two days ago I realized that everytime I start my APM 2.5 installed in an apprentice plane (from Eflite) with Arduplane v.2.68 and MP 1.2.32. the artificial horizon in MP is shaking specially on the "y" axis (pitch signal)even when the plane is on the bench with no wind nor vibration. I tried to solve it by restarting the APM and also did the level in configuration/arduplane level/level(button). But the problem persist.
I have three main questions:
1. Is there any kind of deep calibration of gyros/imu unit to solve this problem?
2. What would be an acceptable signal variation for the horizon?
3. what could be causing the changes in modes without rc transmitter interaction?
Attached are Tlog and Rtlog. Help would very appreciated.
I´m also having the problem of modes changing without any transmitter interaction, this problem can also be seen on this video:
thank you for your help,