Multiwii to Multiwii Nav7 Unstable flight

[Commando]

Im update to EOS Bandi MW 2.3 Navi b7 from _Gaza07 2.3 and its pretty unstable!!! (http://www.multi-rotor.co.uk/index.php?topic=1762.0) Thank you!
the reason is i want autonomous flight (GPS pinpoints)

_Gaza07';s Firmware, !! Was Awesome! Stable as ROCK!! When wind blows It, still there!!!! No moving! so quick corrections!

EOS Bandi';s ...  :huh Very unstable! Dificult to hover!! I play with PIDs... no luck! Wind blows and drifting away  (without loosing orientation)
Sometime on Angle+GPS Hold mode, changes the hovering position, the horizon changing after a wind blows or after i moving fast.!!! 
Do you have any clues?
I tried also Multiwii nav5.
Calibration done in all ways!
change settings as are in _Gazas07';s no luck.
leaving confg like it is, better, but still unstable.
I try to cutt gyros 42Mhz... a bit better.
Im also trying MegapiretNG Unstable also.

--Crius AIO V2 with extended board ublox GPS
H Copter (Xquad in settings)
--
Which Firmware is the best for GPS Missions?
Cheers Guys! 

[Commando]

here is the video of changing orientation
http://youtu.be/QjWbkVTpI9Q

[brewski]

If you tried MP & still unstable then obviously something is wrong with your setup, most likely vibrations or faulty motor/esc.
I have been running MW2.3 navi B7 for over 3 months & found it excellent. Sure it is more sensitive to vibration, but accurately balancing (good quality APC Composite or CF) props & motors + using 42hz LPF Gyro/ACC filter for your MPU will get you stable flight. I can Pos/Alt Hold within 1.5m consistently & it will run Mission with same accuracy.
Keep at it as this is the most advanced opensource FC firmware that will run on cheap FCs currently available. Beware of the cheap & nasty HK MW mega boards as these have serious design issues. Pay a few extra $ & get a Crius AIOP V2 (or equivalent) as I have & you will get the most of MW2.3 Navi B7. Read the http://www.multiwii.com/forum/viewtopic.php?f=8&t=3989 for tips on getting the best from this firmware from the guy who wrote it.

PS. I reread your post & see you are using Crius AIOP V2..Great . Have you either modified to get 5V at CPU by bridging protection diode or are using 5.5V UBec? If not the AtMega will be running dangerously close to it';s minimum 4.5V when running at 16Mhz.

[Commando]

thanks, i still have the problem im trying solve it.... no luck. i was use esc power for my board and change it to ubec 5v 5A HKing ubec. still got the problem im close to be furious. after a gps mission my copter crash and had many problems to rebuild it.
I will try to change to Mega pirate....

[brewski]

thanks, i still have the problem im trying solve it.... no luck. i was use esc power for my board and change it to ubec 5v 5A HKing ubec. still got the problem im close to be furious. after a gps mission my copter crash and had many problems to rebuild it.
I will try to change to Mega pirate....

If you don';t short the onboard diode you need to use 5.5V Ubec or 6V with another diode in series (drops to 5.3). What you are aiming for is 5V supplied to ATMega 2560. APM 2.5 runs the same processor with same onboard diode so they specify 5.3V for any supply used.

[Commando]

So the easiest thing is to short the diode right? :) and using existing 5v Ubec.
or
using a 6V ubec and add a diode in series.
Today I tried to find out about voltage. I see that my 5V UBEC actually gives 6V.
I measure what voltage crius give and was 5.5V!
Do you believe that should I solder the diode?

I have ask similar to this post, about voltage consumption.
http://www.multi-rotor.co.uk/index.php?topic=11822.0

Thanks for your answer

[Commando]

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