Iam working on custom stack.
I placed the quad in stationary postition and i have armed the quad. After that i logged the Local position value in Q ground control. the x and y are varying within 2m range but the altitude is keep on increasing gradually . the altitude varied to 15m within 6 minutes.
I am using postition estimator inav.
I checked the same thing with default stack. In default stack there is no such big variation.
Is there anything I have to do to keep the altitude not varying when the quad in stationary position.?