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General Topics => Chatter Zone => Topic started by: KARTHIC RAJA on June 27, 2018, 02:25:43 PM



Title: my first quad 450mm was unstable, fixing
Post by: KARTHIC RAJA on June 27, 2018, 02:25:43 PM
i build first drone 450mm, spec; frame; 450mm from rc bazaar,
 motors: 1it400kv A2212 from robu,
fc: cc3d from rc bazaar,
the model was not stable , while takeoff it flips, sometimes NW motors didn't rotate , please fix it friends , what to do with


Title: Re: my first quad 450mm was unstable, fixing
Post by: KARTHIC RAJA on June 27, 2018, 07:19:56 PM
with out props i just armed my drone and raised thrust, NW motor didn't spin and suddenly esc burst, i am disappoint, can anybody fix the problem


Title: Re: my first quad 450mm was unstable, fixing
Post by: K K Iyer on June 27, 2018, 08:03:53 PM
Perhaps that particular motor was mechanically jammed...


Title: Re: my first quad 450mm was unstable, fixing
Post by: KARTHIC RAJA on June 27, 2018, 10:10:45 PM
No, i saw and confirmed that motor is well mounted, and the frame mount hole is for that motor spec only, while fc setup when i choose rapid ESC option this happen, if i choose standard ESC option wobling and flips takes place


Title: Re: my first quad 450mm was unstable, fixing
Post by: K K Iyer on June 27, 2018, 10:24:17 PM
Perhaps that particular motor was mechanically jammed...


What I meant was ‘was it rotating freely if spun by hand?’
Could jam for reasons other than mounting screws being too long...


Title: Re: my first quad 450mm was unstable, fixing
Post by: KARTHIC RAJA on June 28, 2018, 01:20:05 PM
yes the motor rotates freely, any one in pondicherry or near pondi, can solve my probs,  i am in pondicherry


Title: Re: my first quad 450mm was unstable, fixing
Post by: Imperial fire on June 28, 2018, 05:20:20 PM
you need to post pictures . so that we can help you.
what esc is it? what prop size were u using? etc..the more info the better.
mostly avoid electronics from rcb.
always stick to good brands like emax etc its cheaper in the long run.


Title: Re: my first quad 450mm was unstable, fixing
Post by: KARTHIC RAJA on July 06, 2018, 08:41:23 PM
i have attached the photos


Title: Re: my first quad 450mm was unstable, fixing
Post by: KARTHIC RAJA on July 06, 2018, 08:55:15 PM
i have attached the video,
white colour is front direction, from the video you can see that NW motor some times lag from other motors and some times the NW motor didn't spin and ESC, motor both starts to burn. like this i burned 3 pairs of motor and ESC like the same way, while operating separately the motor from receiver all are spins nicely if i coonected to the quad this happens, please help friends, i don't know why the esc and motor burns,

https://www.youtube.com/watch?v=3rdkebHV7hg (https://www.youtube.com/watch?v=3rdkebHV7hg)
https://www.youtube.com/watch?v=bh2J3tjsiTk (https://www.youtube.com/watch?v=bh2J3tjsiTk)


Title: Re: my first quad 450mm was unstable, fixing
Post by: KARTHIC RAJA on July 06, 2018, 08:59:15 PM
in the second video u can notice , atlast NW motor and ESC burned with out even rotating, what the problem?


Title: Re: my first quad 450mm was unstable, fixing
Post by: KARTHIC RAJA on July 10, 2018, 07:04:04 AM
Friends anybody saw my above probs, any solution please. ?


Title: Re: my first quad 450mm was unstable, fixing
Post by: rufussam on July 11, 2018, 11:43:33 AM
No, i saw and confirmed that motor is well mounted, and the frame mount hole is for that motor spec only, while fc setup when i choose rapid ESC option this happen, if i choose standard ESC option wobling and flips takes place

Hi, am not an expert, but have you calibrated all ESC together with FC?

And since you said that it happens with rapid ESC option.. change it to standard.. then i think wobbling might be due to high PI rates..

So my suggestion is try with standard ESC option.. then adjust (decrease) the PI rates.. to decrease the wobbling..
Please update if it works..



Title: Re: my first quad 450mm was unstable, fixing
Post by: KARTHIC RAJA on July 12, 2018, 08:25:26 PM
in the (standard ESC) mode also atlast burned so here by conclude that there is no problem with (standard esc & rapid ESC ) option, because at both the option the motor and ESC are burning,
 -)  i callibrated the ESC through cc3d board.
-)   i actually gave throttle just to start spin but at that stage it self the motor and ESC are burning because at that stage there is no possibility of consuming more power.
-)   I choosen the (450mm frame ) option in my FC, so that I think the (P I) values are corresponds to my frame and don't need to change, any way i change and see, and i update the status
-)   any body can reason why it was burning, i couldn't find the reason

thank you friends.


Title: Re: my first quad 450mm was unstable, fixing
Post by: rufussam on July 13, 2018, 09:52:11 AM
in the (standard ESC) mode also atlast burned so here by conclude that there is no problem with (standard esc & rapid ESC ) option, because at both the option the motor and ESC are burning,
 -)  i callibrated the ESC through cc3d board.
-)   i actually gave throttle just to start spin but at that stage it self the motor and ESC are burning because at that stage there is no possibility of consuming more power.
-)   I choosen the (450mm frame ) option in my FC, so that I think the (P I) values are corresponds to my frame and don't need to change, any way i change and see, and i update the status
-)   any body can reason why it was burning, i couldn't find the reason

thank you friends.

PI Values are not fixed for a frame.. they are unique to each quad.. so you have try and adjust the PI to your own quad..

similarly the self leveling P values also should be adjusted to your quad.. its not fixed to a frame size.. try decreasing the PI values and update...

BTW which battery you using?



Title: Re: my first quad 450mm was unstable, fixing
Post by: rufussam on July 13, 2018, 10:50:59 AM
i have attached the photos

in the second image... i cant see the arrows on the board.. have you oriented the board in + mode?


Title: Re: my first quad 450mm was unstable, fixing
Post by: rufussam on July 13, 2018, 10:54:55 AM
i have attached the photos

yes you oriented the board in plus mode and chosen X mode in configuration...
so suggest you change the orientation of the board to X mode, such that the the arrow will be facing the space in between the front two arms.. then do reset calibrate everything together.. choose standard esc (or default settings)..

Try flying.. later adjust PI settings..

Please update


Title: Re: my first quad 450mm was unstable, fixing
Post by: KARTHIC RAJA on July 13, 2018, 01:14:13 PM
i have attached the photos

yes you oriented the board in plus mode and chosen X mode in configuration...
so suggest you change the orientation of the board to X mode, such that the the arrow will be facing the space in between the front two arms.. then do reset calibrate everything together.. choose standard esc (or default settings)..

Try flying.. later adjust PI settings..

Please update
I mounted the FC 45° CCW and while setup the FC i corrected that FC was 45° CCW, because mounting holes are like that,

 I am using 2200mah 35C  3cell  wolfpack brand from RC bazaar


Title: Re: my first quad 450mm was unstable, fixing
Post by: sim_tcr on July 13, 2018, 02:05:59 PM
i have attached the photos

yes you oriented the board in plus mode and chosen X mode in configuration...
so suggest you change the orientation of the board to X mode, such that the the arrow will be facing the space in between the front two arms.. then do reset calibrate everything together.. choose standard esc (or default settings)..

Try flying.. later adjust PI settings..

Please update
Thank you rufuss.
Mine was flipping as soon as it lifts. Issue was same. Board was placed + and motor layout as x.


Title: Re: my first quad 450mm was unstable, fixing
Post by: rufussam on July 13, 2018, 02:34:52 PM
You’re welcome! Simon :-) :hatsoff: