Hi guys , so today I received my APM , after programming it , I took it out to my roof .
It flew nice till it was in stabilise mode , but as soon as I switched it to Loiter (gps stabilise )
It started flying diagonally and went to my neighbours house and crashed there  , they were nice and helped me get it back , can someone pls tell me what went wrong . This felt exactly like a naza flyaway issue .

Gps - ublox 6m with COMPASS
APM - 2.6
Firmware - Latest

Leftover image -

And the strangest thing , THE PROPS WERE STILL INTACT !!!

Is that an x525 frame.

X 600 from quadkopters

How is this frame. Is it of good quality.

Yeah ! Great , when I was going to their house , i was thinking that the booms would have bent , the motors would be broken and the props finished ! But instead the motor , prop and everything else was perfect ! As you can see , only the landing gear broke off and I have already fixed it !

And also , the idea of a foldable frame that doesn't require to first remove a screw to fold it is great !

Thanks.

Sorry for hijacking.

Landing gear fixed .

PLS HELP ME AND PLS TELL ME IF SOMEBODY HAS HAD A PROBLEM LIKE THIS

Did you calibrate the compass before you took flight?

Yes I did it , but I put it on the right side of the apm and the receiver , was that the problem ?

you have that GPS with Compass board? Neo 6M???

Yes I do , pic attached

Ahhh, should kept it a bit away from other electronics. Use a GPS stand.

How can I make one ?

Don't want to wait for one .

easy use your imagination.
One thing keep the gps a bit high from the frame.

Any design / drawing my imagination gets wild sometimes

That is the problem the gps is with all the elecs.
One more thing was it cloudy.
As if it is cloudy the gps won't catch the signal properly.

See some of the quadcopter builds you will have an idea.

It wasn't cloudy , but It was windy , the gps had 3d lock . I will try and make one myself , if I won't be able to do it then I'll buy it from somewhere

Dont need any drawing, using a stick put some hot glue on it and make some platform over it. stick your gps over this platform. Keep good distance between your electronics and gps/compass

Will this work ?

maybe

Installed

Does anybody know , how can I test It ?, I don't want to test it out again .

Everything is ready for a new flight !

Ensure module is high enough above props plane. Compass is mounted on the bottom of the module so ensure you have set roll 180 degree.

Just tried it , with my hand holding it , works fine in stabilise , but as soon as I set in Loiter , it tried to get higher , but because my hand was holding it , it couldn't , BASICALLY THE PROBLEM IS STILL THERE . PLEASE HELP !

Is there some other mode , which requires gps other than rtl so that I can test the gps ?

Pls help me

Pls help . it's urgent

Just tried it in alt hold (no gps required ) . It gives the same result , the problem can be in the barometer .

Pls help me

See, sometimes root cause can be completely different than we think. I hope you have followed guide of copter.ardupilot.com
There two important steps needs to be done carefully.
Compass and accelerometer celebration. Have you performed them as per guidelines given on the wiki? One more think ensure that compass is facing in correct direction(north-north). Also as i said check whethet roll rotation is set to 180 degree as the compass is upside down on the external module.

Yes I have done everything right , as you said .

I have contacted sp4mm3r to replace my controller , they should reply back by tomorrow

Does the Mission Planner HUD shows correct reading (ie E,W,N,S) when your copter is pointed to the respective direction?

Yes sir , but the barometer goes wild . Already contacted seller to replace it .

I couldn't understand what does it mean. Are you experiencing altitude drop while flying?

Altititude increase ! It goes up in full speed

Which firmware are you using? 3.1.5?

Yes

3.1.5

This is a known issue with 3.1.5 where the quad jumps upto 2m when you takeoff first time in loiter or alt hold modes. It seems this was fixed in 3.2 (still in beta stage). And what about the compass problem? You said the quad was moving diagonally, is that fixed? Not all GPS module has compass at the bottom so you have to make sure while selecting rotation roll in MP.

Is there a way I can try 3.2 ? It doesn't go to 2m , it keeps on going up until and unless I switch the mode . I don't know about diagonal as the only testing I have done with it after the crash is by holding it with my hand inside my room .
Can you tell me how to test for compass ?

Yes! You can try 3.2 RC7 (which is the latest) from your Mission Planner firmware selection page (select beta firmware). It might be risky, I would suggest you to stick with 3.1.5 until 3.2 is released. Compass test can be done through CLI (Test-> Compass) or by looking in the HUD. My GPS module has compass on top of it so I had to set Rotation Roll as None (0). Make sure you check this physically or by performing the test.

Thanks sir , I will check

If you have any data flash log of that flight pls send it to me.

No , sir I don't have it , pls look at the pictures and tell me is the compass inverted or not .

I figured it out , it's reversed , I'm installing beta firmware right now

New problem , the motors rotate when I arm the quad but they don't respond much to the throttle stick movement . Pls help .

I have already recalibrated everything

Have you flown the quad? In which flight mode the throttle is less responsive?

It's not working in any mode , therefore I haven't flown it yet .

Today I flew my APM quad with firmware 3.2 rc7. I didn't notice any issues with throttle. New Position Hold (Hybrid) mode works great. Posted a vid & sorry for the crappy video, it was taken with a mobile phone.

Wouldn't an EMI shield over the GPS minimize the interference?

I exactly faced the same situation three reasons that can cause this
1. Vibration - caused by unbalanced props put some vibration dampening to see if its under level check the log ACCX ACCY ACCZ values should be below 3 , 3, 15
2. Compass- RE-DO Live calibration and check the magnetic declination of your area put the values in after checking the values online
moreover COMPASS-Motor calibration is extremely important make sure they are not more than 35 -40 percent if interference  is more try isolating the compass use a mounting to elevate it from the motors so that magnetic interference is less
3. PIDs see is the PID of stabilize mode and LOITER is good moreover check if you have 3D lock before switching to loiter