My new Anti Crime V4 LR quad project's idea is inspired by DJI Mini2 motors and props. I believe that DJI is pretty good in motor-prop optimisation. DJI got 250g drone to fly on 2S for about 30min. I got an idea to build LR FPV drone to be lighter and fly longer than Mini2. So I took its motors and designed a frame around them. The quad has 4K HD recording camera, GPS and Crossfire onboard.
At this moment its AUW is 214g. But I got uncontrollable vibrations on arms. See the Part 1 video of this development:
Even with weight adding quick improvement I got 34min of the flight time! So I have to redesign the arms to be untwistable and clean.
Developing continues. Stay tuned :)
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2S Liion is something I want to explore further. I've enjoyed the micro reverb and a few others, but I can never get the tune right across such a wide voltage range it seems. Did you find yourself having to do anything special to avoid wobbles?
Nice build DiAleksi! Ive never seen this frame before now and am saddened that it does not look to be available in the US lol could be stl files I'm not seeing though :-( You thinking about loading up INav on something this small and feeding it some missions?? I'm waiting to see someone build a micro mission eater lol
There will be changes in that frame prototype. The final version will be available in Swedish drone shop. I believe they ship to US also.
I use iNav on my wings. But setting it on my 6" quad was pain in the ass. Big problems around the compass position. So this time I think I'll try Ardupilot if I want some missions. But don't think I'll have an interest in that area, as new regulations make all LR fun illegal.
This is great. I've been thinking the DJI mini motors would be a good place to start. I keep looking to just buy the motors, which they don't seem to sell without the whole arm assembly, but I guess that's not a lot more expensive than a bare motor. Looking forward to your development of this setup.
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I've built a quad similar to your setup with dji mini 2 motors and props. The props seem to have really TERRIBLE vibration characteristics as you have already experienced. Now i switch to 1404s and HQ T5x3 props and the vibration's gone, no arm reinforcement needed and i still get similar efficiency. the dji motors are lighter though, that's the trade off i guess.