Getting bad ground affect barometer readings

ArduCopter Copter 3.1
1

So I tried to auto land my quad today and it was almost a crash.

I am getting really bad barometer readings near the ground, when I got my Pixhawk I saw that it already had foam over the barometer, so I didn’t do anything special. I also have it mounted inside an AVDome. Any thoughts to make this better? I am seeing height swings of around 2M as I approach the ground so this wont work for auto land.

Pixhawk in AVDome,
17" props on 4830 Turnigy controller by Hobbywing 40A esc
2.8 kg AUW

2

Any thoughts?

Thanks

3

Hi kfennell,

Try lowering the LAND_SPEED

more information in:
copter.ardupilot.com/wiki/land-mode/

4

It was already on 20, which is as low as it could go.