RC India

Hi,

i build this 250 racer kit from rcbazaar http://www.rcbazaar.com/product.aspx?productid=4733

Its flying stable and its good kit, but need to tune it. this is my first quad build.

Need help in tuning CC3D.

When there is yaw input it overshoots and when it stopped during FFF its not stable.

https://www.youtube.com/watch?v=tFd7_ykgReg (https://www.youtube.com/watch?v=tFd7_ykgReg)

thank you

Hello,
So I recently got my first 250 quad a month ago and still in the learning process(Not a cc3d). (dont know much about tuning)
what have you flashed it with? you need to tune it while flying in acro mode from your video it seems your P is alittle high.
check this video out for learning to tune your PID's. It really helped me. When I flew mine for the first time it was oscillating big time! but i got my P down increased the I and D slightly and it worked for me. I am using PID controller 1 .

Hope this video helps.
https://www.youtube.com/watch?v=JNvA7tutirc

Mateen

Its not the problem with yaw its problem with ROLL/pitch try to lower the values of I in PID if the wobbling effect increases further , try bringing back I to original and lower P .@dineash kumar.

thanks Mateen & Balakrishna.
i will try that and get back.

i am using openpilot as GCS should i change to librepilot?

Im sorry. I dont know much about openpilot and the other one. I use cleanflight. and in the most recent update. they got G-Tune which can help you tune your quad if you dont know much about tuning.

Do u have cleanflight flashed in CC3D? i have cc3d revo board from the kit.

Stay away from GTune/ Autotune in CF/ßF. They never really worked properly and have been removed in new Betaflight releases. The best way to tune is UTune  ;)  

The board in the kit is a normal CC3D. The Evo name is kind of confusing since there is a CC3D Revo which is completely different - it is STM32F4 based. It is possible to flash Cleanflight or Betaflight on the CC3D for better flight performance but I believe it is kind of tricky due to some quirks of the CC3D hardware - limited flash, can't run PPM and Oneshot together unless you move PPM to a different pin etc..

thank you.
As openpilot is discontinued, do i have to change to librepilot?

and i am using orangerx r100 with dx6i. i am using the rx in flexi satellite port is it okay or should i move it to main satellite port?

I used G-tune yesterday and was amazed it flew extremely well compared to what what I did previously! totally agree self tuning is way better for learning and future but for beginners its not bad at all.  I use a naze32 not a CC3D.

thanks everyone

i am decreasing the p now. do i have to do that for roll, pitch & yaw all three?

just keep lowering ur PID's till it feels stable again, like from the point where it started wobbling. just lower it bit by bit and it should handle decently. make sure u have it on attitude mode only.

hi thank you
i am using the following PID
(https://dl.dropboxusercontent.com/u/29915798/AvAeSpH4VrUswyWvji0CDu98hs3_bwNXt2S4lRcX1267.jpg)

Do i need to reduce P for roll, pitch & yaw?

roll and pitch together. and yaw after tuning roll and pitch. PID in pitch will be alittle higher than roll.

this is a very trial and error thing, best is to fly the quad and see if there is any oscilations or not.
i have the same kit and i did that process for around 2 days.

use this, it is stable....but u still have to fine tune it....
reduce ur attitude degree/sec to 40 for the start.