Hi, I came across this and found it odd. Maybe it’s perfectly normal. But I thought I’d share.
While the plane is sitting perfectly still on the floor, with 4.5.4 in the 20s test, the pitch moves up and down roughly between -0.080 and -0.096. But with a custom build (master as of 2024-07-15), the jittery pitch is much more noticeable. It goes up and down between -0.42 and +0.11, so that you even notice it in Mission Planner’s attitude indicator.
Can it be that this is just because in the DEV custom build, I have support for the airspeed sensor and in the other versions, the sensor is not sending any data? (See earlier thread.)
Apparently this is related to the airspeed from the pitot sensor that somehow spills over into the pitch reading when stationary on the ground. This is a same with a custom build of 4.5.4 with my airspeed driver enabled.
But I guess, this is not really an issue because once in the air, the airspeed reading is more stable and external factors will cause much more changes in pitch.
