DSLR capable multicopter around DJI Naza

T

tomikulmala

Member
I hope you have some answers to my problem on my new build.

My current setup is a DJI F450 -quadcopter with RCTimer 2836 motors (http://rctimer.com/index.php?gOo=goods_details.dwt&goodsid=573&productname=) and I've been flying it with GoPro and QuadFrame -gimball (http://quadframe.com/collections/cm/products/g01k). Somehow this RC-stuff tends to get out of hands and now I want more :).

I want to be able to carry:
- DSLR camera + lens (probably max 30mm) for still photos (I'm going to try to build a shutter controller)
- GoPro camera for HD-video + the gimball I mentioned before

So the payload need is at least 3kg depending on the stuff I find (I'm looking for a used DSLR+lens right now). Target flight time would be around 10 minutes.

Now I'd like your opinions on what kind of setup are we talking about (quad/hexa, motors, propellers, batteries...). No need for "fun fly" with this thing.


Please keep in mind we're on a budget here (but I have no specific numbers to say at the moment), so don't suggest anything custom made like $100 motors or stuff like that :D.


Other stuff that I already have and preferably would also use:
- DJI Naza
- Spektrum DX7



Thanks in advance!
 


K

Kari

Member
Moi Tomi,

If you want carry 3kg payload i think you need to go for dw skyjib or other very big size platform which doesn't come cheap. Cinestars and dw hl:s are rated more like 2kg pl. Good option imo is to go for smaller dslr combo or micro ft camera.

Kari
 

T

tomikulmala

Member
Moi Kari,

That's what I'm afraid of too. As I am building this for hobby purposes only, I would not want to go that far with the dollars/euros invested.

The DSLR I had in mind is Canon 350D with some basic lens. They should come up close to 1kg + batteries & GoPro, that's probably 2-2,5kg?

As for shutter system I was thinking StratoSnapper.
 



T

tomikulmala

Member
Exactly :).
Just wondering the battery solution he has got. I think XT60 connector can handle the currents just fine. So I might go with 3S2P with 2200mAh Nanotechs in the beginning (I already have them). I know a lot of people who use XT60 connectors in their RC-trucks that draw much more current than this hexa so there should not be any problems. Also this way I'll be able to still use Naza's voltage cutoff.

Any idea where to get those APC 12x3.8 propellers cheap?
 

T

Ttelmah

Member
Other thing is that the accuracy of the Naza's algorithms degrades with load. It makes certain assumptions about the rate that the copter will move, and when you move away from this, you can find it increasingly hard to get good stability.
I played with changing the weight of a copter (different motors, rotors and batteries), with a Naza setup, and at 1Kg it ran fine. 1.5, 2, even 2.5Kg it was within the range of the parameters accepted by the control. However I couldn't actually get altitude gain high enough to get good stability once I pushed up much past this. Obviouosly different USC tuning, and some tweaking might well have got it to work, but it was definately 'struggling'. The copter was actually easier to fly on manual than using the Naza at the top of the weight range. I suspect this is partly 'deliberate', to force you to the Wookong as copters get heavier.....
I happily got good stability with an ArduPilot.

Best Wishes
 

A

Able Peter

Member
Terve Tomi ja Kari,

I'm also considering new build (got mikrokopter octo atm and I cant say that I trust it 100%). Aiming to fly my NEX-6 with 16-50mm OSS. Some reason I keep looking for Rustys frame with Y-6 configuration. I'm under impression that it should be rigid enough for this kind of weights. Still not decided between Zero UAV or DJI.
 

Cbergen

Cbergen

Member
I don't think it's the weight necessarily that causes issues, it's overloading the capabilities of the airframe.

For instance, here's our 900mm Hexacopter with appx 4 lbs of payload, for a total AUW of appx 15 Lbs, flying with a Naza w/GPS. Seems to work just fine..
icon_biggrin.gif


http://www.youtube.com/watch?v=S5Wg1-r7PkU&list=UUTkGlBstqsV5A4xDv5krsng&index=3
 

B

boffin

New Member
Hi 12 months ago built my own octo always up for a challenge.like many i had a budget but soon ended in tears .Parts not to buy cheap are esc and motors with all that exspensive camara gear you want a realiable set up.THIS is the set up i used and work excellenty rock solid.2814/22 axi motors.hobby wing 30amp ESC frequency is important to depending on which controler you use in my set up this would be wookong m av200 camara gimbal canon 100d slr. running on 6s lipo .my octo is heavy buy very stable in all weather. the OD is 830mm but as i say dont go to cheap on parts that count.cheers
 

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