Wobble of death

jevermeister · Post by **jevermeister** » Mon Apr 16, 2012 10:30 pm

Hi ,
my old QuadX with Turnigy Plus 25A was rocksolid. I htrew it into the air with motors off and started in mid air and it stabilized like a lizard.

But after I rebuilt the exact same copter with Turnigy SS18A This was not possible, If I bank to hard I had a woble of death.
I switched the ESCs to Hobbywing 18A (same as Plush) but I have still wobble of death.

I increased the minthrottle to 1300 with 10" Props now.
I noticed, that the throttle is quite high. Is it possible that is set too high to do a good stabilize?
MAybe the throttle bandwith is too small now?

Nils

Katch · Post by **Katch** » Mon Apr 16, 2012 10:48 pm

much more likely that you need to tweak PIDs and LPF to calm it down.

jevermeister · Post by **jevermeister** » Tue Apr 17, 2012 9:43 pm

Any Tipps what to tweak and where to begin? I decreased p but it did not help :-/

schmuggler · Post by **schmuggler** » Wed Apr 18, 2012 12:08 pm

Hello jevermeister
I had the same problem with follow setup:
flyduino mega v2
turnigy plush 25
allinone board
maybe you find a answer here http://www.rcgroups.com/forums/showthread.php?t=1608239
regards jan

jevermeister · Post by **jevermeister** » Wed Apr 18, 2012 8:33 pm

Hi Jan,
what did you do to fix it?

Nils

jevermeister · Post by **jevermeister** » Wed Apr 18, 2012 8:37 pm

Hi,
I also posted this in RCgroups:

Okay,
I made a small video.

This is happening when I bank the copter hard, it is the same behavior when I use the sticks for that, the copter is doing this, not me!!

http://www.youtube.com/watch?v=ZBIEYvr65rk&feature=player_detailpage#t=46s

WTH??
Nils

schmuggler · Post by **schmuggler** » Wed Apr 18, 2012 11:13 pm

Hello Jevermeister
after waist two days whit that problem i chance the fc to mini 328 with bma020 wmp and an older 1.7 dev version .
some days later i destroi a 11x5 graupner in the air at full speed .
since that i fly the mega and allinone with 2.0 and turnigy again .
i think it was the nearly deth prop it makes a specil vibration frequenz who the itg3200 dont like.
ther are too many unknowen resons to say wher the problem was i am sorry.
regards jan

jevermeister · Post by **jevermeister** » Mon Apr 23, 2012 10:38 pm

Okay,
I read warhtox Post and ordered 5x Turnigy Plush 12A I jsut switched them and the wobble is gone, the copter is more aggresive and reacts way more direct to the inputs, it is more precise now.
I cut open one of the flyfuns and it was Hardware Version 4.0

Oh good I am so glad it works now.

Warthox is da man!

Nils

KeesvR · Post by **KeesvR** » Wed Apr 25, 2012 9:51 am

Nice to here your problem is solved, maybe your old ones become good (as it are atmel) after flashing them with Simon Kirby's software.
http://www.rcgroups.com/forums/showthread.php?t=1513678

jevermeister · Post by **jevermeister** » Wed Apr 25, 2012 10:08 am

KeesvR wrote:Nice to here your problem is solved, maybe your old ones become good (as it are atmel) after flashing them with Simon Kirby's software.
http://www.rcgroups.com/forums/showthread.php?t=1513678

hi,
the Hobbzwing have SIL chips on it.
Ew I think flashing them is a lot of work. I am not that good with drilling microscopic holes and soldering wires one can barelz see >/*

Nils

MultiWii

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