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ched:
18 Oct 2019 11:25:16
Sounds good yama. Would love to see some images. 3d models sound cool too
yama:
18 Oct 2019 10:32:38
i might have to do a review. the 21mp camera is excellent at producing high quality 3d models for mapping.
ched:
10 Oct 2019 16:56:16
Show us some picys and maybe post a review in a thread?
yama:
09 Oct 2019 14:13:10
must admit this anafi is tiny and looks like a toy in a lunchbox but performs like a professional product.
yama:
09 Oct 2019 14:11:52
went ahead and bought one. about to find out if the 21mp camera improves photogrammetry surveys.
ched:
08 Oct 2019 17:14:17
Not tried a parrot anafi but I thought parrot were stopping 'drone' production?
yama:
07 Oct 2019 13:25:37
anyone tried a parrot anafi?
Gaza07:
26 Sep 2019 11:33:59
We know a song about that dont we  :D
Andy7:
26 Sep 2019 08:38:34
 :laugh:
Bad Raven:
26 Sep 2019 07:10:39
Adopts Australian accent "Black, that's not Black, its a dirty grey, THIS is Black........"   :D
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3d - Printworx

Printing 3d Forum

Little flight of my Mini quad

Started by CurryKitten, Thursday,June 27, 2013, 11:34:10

Previous topic - Next topic

CurryKitten

Here';s a quick vid of my last quad flight from Monday.  The frame comes from the Turnigy mini quad thingy HK sell, but I';ve kind of rearranged things in order to carry a little 808 #16 cam and a micro VTX.  This video was from a test flight to see if i could clear up my live picture with an attempt at making an LC filter.

I made 3 flights, and neglected to press record on the fisrt one, so here';s a few minutes from the other two



I absolutely love flying this little thing, it';s like having my own personal angry bee.  I';m just getting one weird problem though - it';s powered by a 950mah 2S nano-tech lipo (which gives about 4 minutes) but the KK2 voltage alarm goes of quite early if I pull any high throttle stuff... and then settles again.

i must admit i don';t know how the voltage alarm works, there seems to be levels so more frequent beep = lower voltage.  Anyone know when it starts going off.  It';s hard to believe I';m doing enough to pull a fresh 4.2v cell to 3.3v in a single manouver

Gaza07

Nice flying and the filter worked very well  ~~

JT

 Really cool video :cool: The little quad looks fast!

teslahed

Quotethe KK2 voltage alarm goes of quite early if I pull any high throttle stuff... and then settles again.


This is perfectly normal. The reason this happens is that when you throttle up your motors drain more amps which actually causes the voltage across the battery to drop slightly. Your voltage could drop by as much as 0.5 volts when you go from 50% throttle to 100% which is easily enough to drop you below the point that the voltage alarm will start to sound at. When you go back to 50% throttle your voltage will recover and the alarm will stop for a bit.

If you pay attention to the way the voltage alarm behaves you will learn to read the first few times it starts going off in the climbs as a kind of ';early warning';.

Eventually you';ll want to fit an OSD so that you can view the voltage readout in your video link - it makes things a lot clearer. The ';Super Simple OSD'; is the cheapest and easiest to setup (and lightest) - it just does voltage and a timer - and even that makes it a lot more obvious what the battery is doing. I would land as soon as i saw 10.2 volts on mine and never had an issue.

Also - nice FPV quad! I learned to fly fpv with a mini quad a similar size to yours and all my first few flights were with an 808#16 as well. Something about flying a quad that light and cheap which makes you feel more confident about throwing it about a bit :smiley: I';m definitely a fan of the smaller multirotors with the higher kv props myself - just because of how well they can perform for this kind of flying.

I think your low pass filter would work even better with more turns on the inductor. What capacity capacitor have you used? I used a 1000uF 16 volt on mine as i just copied the values hobbyking had used.



One circlip short of a quadcopter.
 1 lobe short of an antenna.

nub

Point and click.

Monkey see, Monkey do.

CurryKitten

Thanks for that teslahed.  I';ve got kind of use to how the beeping works... although the ground recording just has soundbytes of me saying "shut up" as this little beeping thing buzzes about.  I was after one of those super simple OSD';s for a little plane, but if they ever come back in stock I';ll see how well it would fit into the quad... there';s not an awful lot of room left.

I';m definately a fan of throwing around a little quad - I wouldn';t do the same with my Naza 450 sized one, there';s too much money up there to wreck :D

Capacitor is a 470uf, I based this on a post I found on RC  groups about building an LC.  I reckon I could get a few more turns on the inductor, and obviously use a bigger cap.  It was kind of a suck it and see attempt...  I am fairly lazy though, so i might also try the easy alternative of powering the VTX from a seperate 1S and see how that goes.

DarrellW

Have you tried higher C value Lipos, it might just be that you';re pulling enough amps to make your battery droop.
I think..........I think I am........therefore I am.............I think!

CurryKitten

Quote from: DarrellW on Thursday,June 27, 2013, 12:51:39
Have you tried higher C value Lipos, it might just be that you';re pulling enough amps to make your battery droop.


I';m using these Nano-techs http://www.hobbyking.com/hobbyking/store/__29021__Turnigy_nano_tech_950mah_2S_25_50C_Lipo_Pack_UK_Warehouse_.html which are 25C but should handle 50c in bursts.  These motors only pull 6a each max - so I did think I was using a meaty enough lipo.  That said, it';s all guess work from me - please feel free to correct.

DarrellW

Quote from: CurryKitten on Thursday,June 27, 2013, 12:59:31
I';m using these Nano-techs http://www.hobbyking.com/hobby king/store/__29021__Turnigy_nano_tech_950mah_2S_25_50C_Lipo_Pack_UK_Warehouse_.html which are 25C but should handle 50c in bursts.  These motors only pull 6a each max - so I did think I was using a meaty enough lipo.  That said, it';s all guess work from me - please feel free to correct.

Should be ok I make your max load 24A so 25C 950mah should be just about ok, but I personally would try a 35/40C to see if it makes any difference, I take these burst figures with a dose of salts.
It might be worth looking at the Zippy compacts as well.
I think..........I think I am........therefore I am.............I think!

Gav

Thursday,June 27, 2013, 17:41:47 #9 Last Edit: Thursday,June 27, 2013, 17:45:57 by Gav
I can confirm that this quad is an awesome fpv micro eyeball in the sky.  I want one ::) 

Ps it does have very similar characteristics to a teslaquad I.e. lots of fun and sounds like a nat zapping around lol