"Ardupilot is my fall back solution!

But it's about loosing the battle when i switch to a bought system that runs pretty much out of the box now.

My idea is DIY, and i don't want to stop just because of that problem.

By the way: Did you analyse…"

"I am NOT using a ArduPilot.
I am using a Arduino dicemilla. The EM-406a GPS module is connected to the Serial pins."

"Hello gentlemen,

the problem seems to be different!

Whatever power source i choose, i still get these glitches (Even with a external battery).

Whenever the GPS´ TX pin is connected to serial-read-pin (pin0) of the arduino, i get these glitches.
I…"

"this might be interesting for you guys..."

"By thee way: I am still testing without any aurduino/ardupilot. The airframe (plane itself + FMA-copilot) needs good flight characteristics!! This is more a fma-copilot issue than a UAV problem.
If i apply rudder, i want a constant yaw rate. Any…"

"your second problem:

my plane shows the same behavior. I think the problem is the yawing moment of the ailerons. The rudder turns the plane, and results in a bank angle. The co-pilot tries to steer the airplane back to level flight. Due to the…"

"if you keep the nose up at 6m to touchdown on a easyglider you should have a nice landing.
there should be some groundeffect to, that reduces vertical speed a bit.

currently i land my "uav" from a height of about 20meters without any control input.…"

"how "exact" do you want to land??"

"If you are using the easyglider i dont think you will need the rangefinder.
just keep the plane level or sligtly nose-up, kill the engine and wait..."

"do i understand you right:

you are using only the fma sensors, connected to the ardupilot, without the fma-controller board???

sounds good"

"like i postet earlier. i am using a std. diecimila module.
that might be more robust...."

"yes, the same module.
but the led seems to be bright.

was his power source ok?? i am using the usb-power for programming. i also tried a 3s lipo battery, no change."