Incredibly frustrated

[Grimbo]

Well, this thing has me beat.  X-frame quad with Crius AIOP V2 and megapirateng.  All set up with mission planner; level, escs calibrated, flight modes set, tx stick directions all correct.

BUT - on take off (stabilise mode)  it tilts forward (and if I don';t do a sharpish application of power to get it in the air the front props will hit the ground and it will flip over) and if I can get it in the air it just wants to fly forward and needs constant rearwards correction.

I';ve re calibrated everything at least twice now.  The artificial horizon in Mission planner shows everything as it should, so   I have reached point of maximum frustration and I had to put it away before I attacked it with a large hammer. 

Has anyone got any ideas?  What am I missing?
Cheers

[icedfusion]

I did a quick search on your frame just to see what it looked like.
From the look of it, I will assume the FC board is mounted centered.
I will also assume that you have Centre of Gravity at this point (check by trying to balance it).


If everything happens as you describe, then you can try and calibrate the quad whilst it is in the air. You have to use the GUI to set a switch which allows you to adjust the gyro/accels in the air. I do this on my APM2.0, then when i check the ';Horizon'; in the GUI it looks way out, but it flies level.

Don';t forget to move all trims to 0 or centre before calibrating the level.

Sometimes, getting the horizon flat on the table does not translate to a stable hover when in flight.

ice.

[Jumpy07]

Could be one of a few things..
Check your centre of gravity is under the FC.. if not move the battery to compensate if possible
Could also be be accel calibration, make sure you have done this
Make sure you have calibrated your TX and all sticks centre ok and all trims are removed.
Also consider using autotrim if you need to make a lot of trim adjustments on your TX.

[Grimbo]

Thanks guys

I';ve tried to calibrate the accelerometers but all I get is "command received:", it does not go through the sequence of asking to move the model to different positions.  I think with magapirate and APM I have to do it manuallY?

Mover the battery back a bit to improve the CG, it was a bit off but I didn';t think it was enough to cause my problem.  Cannot try it at the mo as I need to recharge my batts.

[steve fh]

Hi.

Two weeks ago i was in a similar position to you with AOIP V2 Meggp 2.8 etc and a quad that checked out on the bench but tried to flip left or head off violently to the left each time i tried to fly.

Switched to the MultiWii code form this forum and instantly it flew and now after a few P value changes is hands off stable in acro and level mode.

Might be worth a switch to MultiWii (if you have not already tried it) to rule out firmware issues ?

I plan to try MeggaP again at some point once ive got a gps so i can use way points but for now MultiWii is letting me get air time.

One thing i have had issues with (think a few others have as well) is that i have to re trim the ACC';s each time i fly if i want level mode to work well.  I';ve started to wonder if this has something to do with why the MeggaP was messing around as as far us i understand even in acro it tries to level so will be upset if the ACC';s are losing calibration each time the board boots up.

Keep going it';s worth it in the end.

[Grimbo]

Hmmm, Multi Wii - doesn';t support gps?  Not that i plan to use it right away, just curious.

And I think it uses multiwii GUI?

[Gaza07]

When you set your copter level how do you know its actually level ? the reason I ask is because when i do this I have a small level I use to check it, the new level command wont work with megapirate you have to use the CLI to set the acc level 

[Gaza07]

Multi Wii does support Gps it does position hold and return home but doesnt yet support mission planning 

Hmmm, Multi Wii - doesn';t support gps?  Not that i plan to use it right away, just curious.

And I think it uses multiwii GUI?

[Grimbo]

When you set your copter level how do you know its actually level ? the reason I ask is because when i do this I have a small level I use to check it, the new level command wont work with megapirate you have to use the CLI to set the acc level 

I put a level across it diagonally both ways, and then across both front arms , then both rear, then same each side.

[Gaza07]

Sounds good to me  do you use the CLI to set level after that 

I put a level across it diagonally both ways, and then across both front arms , then both rear, then same each side.

[firey1]

Thanks guys

I';ve tried to calibrate the accelerometers but all I get is "command received:", it does not go through the sequence of asking to move the model to different positions.  I think with magapirate and APM I have to do it manuallY?

to make the calibration work you hold the throttle stick down and right as if arming then click calibrate for it to run the calibration process
Mike

[firey1]

also a handy we thing for checking level is a button level stuck to my gyros  from hobby king  i use for my helicopters  using flymentor as you need to be level when powering up

http://www.hobbyking.com/hobbyking/store/__10614__Button_spirit_level_2pc_.html

Mike

[Rammylad]

I have the Crius AIO pro Megapirate V 1.1 and to calibrate the level without using Mission Planner I connect the quad via USB for power. I then put the quad onto a level surface and hold the throttle stick to the left for about 15 seconds, you will see the Led';s flashing for a few seconds whilst it calibrates once the Led';s return to normal it is calibrated.

[Rammylad]

In this video at 14.06 seconds it shows you how the level calibration is done don';t have it connected to Mission Planner.

Crius aio pro update firmware & params

[Grimbo]

Sounds good to me  do you use the CLI to set level after that 

Hmm, CLI doesn';t seem to have any functionality. Plugged in via usb, the only two tabs that give anything are log download (there aren';t any apparently) and log browse.

[Grimbo]

I have the Crius AIO pro Megapirate V 1.1 and to calibrate the level without using Mission Planner I connect the quad via USB for power. I then put the quad onto a level surface and hold the throttle stick to the left for about 15 seconds, you will see the Led';s flashing for a few seconds whilst it calibrates once the Led';s return to normal it is calibrated.

Yep, that';s the way I';ve done it.  Thx