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« on: September 16, 2012, 10:07:46 PM »
yogeshkannan
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hello guys
                i have constructed my quad using a kk2 controller board . . when i give it a little throttle the quad begins to vibrate rapidly .. can anyone help me with this issue ?? its urgent
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« Reply #1 on: September 16, 2012, 10:32:25 PM »
Dharmik
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Bro do you have any video?
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« Reply #2 on: September 16, 2012, 11:08:00 PM »
yogeshkannan
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nope ! it wobbles even before it takes off.. i try to get the video
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« Reply #3 on: September 16, 2012, 11:08:52 PM »
yogeshkannan
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is theere anything like the standard PI values for quads
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« Reply #4 on: September 17, 2012, 09:29:57 AM »
satyagupta
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The default ones that come along with quad is standard PI values, if it wobbles rapidly then decrease the Roll/Pitch gain.
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« Reply #5 on: September 17, 2012, 01:56:38 PM »
raja_mastana
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Trex 450 DFC
Make sure the board is physically oriented according to the mode set in the software.

if +, then board points to one prop
if x, then board points between two props
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« Reply #6 on: September 17, 2012, 08:21:36 PM »
yogeshkannan
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can u roughly say how much do i have to lower the values ??
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« Reply #7 on: September 17, 2012, 09:02:36 PM »
satyagupta
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So here is the thing, keep increasing the p value the moment you get a high frequency wobbling. And once you get wobbles start decreasing the gain until the wobble is gone..
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« Reply #8 on: September 17, 2012, 09:48:32 PM »
yogeshkannan
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so you want me to decrease the P and I values ??
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« Reply #9 on: September 17, 2012, 09:53:39 PM »
satyagupta
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check this video and watch full video...
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« Reply #10 on: September 19, 2012, 10:42:35 PM »
yogeshkannan
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here i overcome another problem ...i have set the P & I gain values
 p-gain = 40
I-gain=30
 the rest are unchanged ..
the vibrations have reduced , but when i give it a 40 % throttle ...before the quad lifts itself , it drifts away towards its left .
what should in this case
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