MultiWii / NAZE / SP Racing F3 MultiWii Pro w/mtk3329 -- Sudden Change in Direction !

[Chunk'n-ology]

Two questions ! First-I apply throttle and lift off.. then I apply forward stick on my Turnigy radio and my quadcopter pitches forward and begins to fly away from me,, I return the stick on my radio to the neutral position and the craft continues away from me slowly going back to a level state,, then all of the sudden it will tilt back towards me hard,,, with the stick still in the neutral position,,, at which point I have to push the stick forward again or the craft would continue to tilt past 90* same thing happens coming towards myself... it pitches forward in the same manner... I only notice this in the pitch and not in the roll... I am currently using a "wultiwii pro 2.0" software that I downloaded from a youtube video link.... Second - my craft does not respond to any commands GPS hold, RTH, Alt. Hold... nothing.... I did add a camera gimbal and it works just fine.... I can fly the craft . But it seems as if it wants to flip upside down if I allowed it to.....im not sure who wrote or changed the wultiwii pro 2.0 software but it seems to be the only version of software I can get to work on my board..... I run multiwii GUI 2.2 and it shows my switches activating all the things I want activated ??? Any Help would be awesome... I know how hard it can be to understand problems over the internet...

 

[Electro 2]

Sounds like you don't have "Level" turned on in the RC TX function switch assignment matrix, and you're flying without accelerometers activated. This would produce the result you have described. Also don't even try to use any of the automated functions (MH, AH. PH, RTH) until the prime axes are tuned to perfection, as they all depend on the basic flight functions being correct for their fucntion. If it's not, crash city.

 

[sixshooterstang]

download multiwii 2.2. Go through the config.h tab on arduino and make sure FFIMUv2 is the only board commented. Then go down and make sure it is in the proper frame configuration. Then go down under the GPS section and make sure MTK-Init is the one commented. Make sure you have the right serial port and upload to MEGA board under the boards list. Upload it. Once done open GUI and connect to the board. See which channels are aux. check the boxes appropriately BUT! just forget GPS hold, heading lock, RTH, and headfree. The magnometer on the MWPRO is useless. Everyone I know who owns one including myself can turn their copter from N 180 degrees and it will read about 45-90* off despite declination and calibration.