Hi everyone, This is my first Forum/ APM Experience... I am trying to have my X8 fly with the airspeed sensor but I am having a really strange behavior.
I have the APM 2.5 directly from 3Drobotics, Came totally assembled with their Airspeed sensor. I loaded the version 2.73 of Arduplane and basicly trew the aircraft in the air after a couple of ground tests.
On the groundm what bugs me the most is the PFD moving up and down a couple of degrees (+- 5) at about 1hz This happens only when the ''use airspeed'' fonction is enabled otherwise the PFD is rock solid. (no need to mention that the plane is level and not moving. )
The Airspeed sensor is also quite erratic itself when on the ground but I thought no big deal since the sensor usually is not accurate for small pressures diferences.
Flew OK but there are a lot of strange behaviors in the air as well... First one is that It would slow the throttle down when in downwind... Usually if it would be flying with a true airspeed it should increase throtle to compensate the altitude loss of a more agressive bank turn... Seems tol me like it is in fact flying Ground speed while in Airspeed mode and the reverse is true, It would increase throtle when in downwind if the option is disabled...
It might sound quite confusing. So I would like to know if there are solution to theses problems :
1. Why is the PFD is ossiclating when ''use airspeed'' is enabled
2. Is there a way other then the ''use airspeed'' variable to know if the APM is using and thrusting the airspeed sensor.