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Feb 01, 2014, 12:59 AM
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QAV400 help


Hey guys, I need some help with my QAV400

This is my second build, and first FPV build, last one fell from the sky, i suspect due to a ESC fault (PS dont buy the RCTimer SimonK ESCs)

The problem im having is control issues. The controls dont feel right, and the copter tends to always drift one way. Also it just doesnt feel right with the responses etc, PIDs i would imagine. However, I just threw this Naza M lite on a F450 and with NO PID tuning it flew pretty well, a heck of a lot better then its flying now on the 400.

Also, my biggest concern is it seemed to loose control at one stage, and stick movments went very "light" if you like, and full movement of the sticks on just made the slightest amount of change in moving.

So, are these QAV400s quite difficult to tune, do they require very good tuning, I have had nothing but bad luck with these frames so far, and this time ive spent big money and done it right, so im really hoping it works right.

Thanks for any help and suggestions, attached are a few pics of my baby

https://www.rcgroups.com/forums/show...8&d=1391237940

https://www.rcgroups.com/forums/show...9&d=1391237940

https://www.rcgroups.com/forums/show...6&d=1391237940
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Feb 01, 2014, 01:35 AM
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xhover's Avatar
What are you PID settings? Another thing is that you should put your flight controller in the inside not on top.
Feb 01, 2014, 01:44 AM
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Quote:
Originally Posted by xhover
What are you PID settings? Another thing is that you should put your flight controller in the inside not on top.
Thanks for the reply, my basics are @ 71% pitch and roll

I would mount the flight controller underneath but this does not leave much/enough room for the battery.

Thanks again!
Feb 01, 2014, 08:06 AM
FPV really is fun.
Scotth72's Avatar
Mount your gps correctly. Arrow should face forward.
Feb 01, 2014, 08:48 AM
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xhover's Avatar
Quote:
Originally Posted by onlinegamesnz
Thanks for the reply, my basics are @ 71% pitch and roll

I would mount the flight controller underneath but this does not leave much/enough room for the battery.

Thanks again!
What size battery are you using ?
Feb 03, 2014, 06:22 PM
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Hey guys, ive given up on the APM and chucked the Naza lite back on. This time I placed the Naza inside the frame, where the battery goes instead of on top, I thought i would not have enough room once the battery is in but it worked out mint. Flight is now much better. I have some questions regarding that wonderful PID stuff, lol

I understand that tuning on the naza is very simple, using my knob im selecting each axis at which to tune. My question is, is a almost "snap" action a good tuning value? If i give aggressive stick movement say right roll, and snap it back, is it good to have the quad "snap" back to level?

I have not done much PID tuning but am playing around with it, and flight looks very stable. Just need some pointers

Im very happy, shes flying well for now lol

PS. did my first FPV flight the other day, certainly takes some getting used to thats for sure, absolutely awesome experience. Hopefully many more to come!

Thanks guys!

Im using 3300 4S


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