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Sep 11, 2012, 04:18 PM
Great Britain
MrBen.'s Avatar
Im getting 9 mins easily with a 3s 3300mah and sunnysky 980kv motors I have about 30% left in lipos when I land
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Sep 11, 2012, 04:22 PM
q {bld(); fly(); brk(); q();}
The Recursion's Avatar
Quote:
Originally Posted by MrBen.
Im getting 9 mins easily with a 3s 3300mah and sunnysky 980kv motors I have about 30% left in lipos when I land
Wow. How much do you weigh without batteries (and with)? What size props?
Sep 11, 2012, 06:41 PM
LOAD "FLIP-FPV",8,1
vic20owner's Avatar
Quote:
Originally Posted by Tron78
here is short vid of me discovering the joy of DJI stock motors with eprops on 4s! I really like this frame... it didn't work for me on 3s.. annoying yaw in wind and ff flight.

http://www.youtube.com/watch?v=POxJ8mEqhwA

cheers,
Tron
Nice work! Mind if I link to your video on the hoverthings site? Which flight controller are you flying there? The flips scream CC, but desc says Naza! Very nice!
Sep 11, 2012, 07:11 PM
Registered User
Judar's Avatar
So i have been trying out a multiiwii FC on the HT-FPV frame.
Using simonk flashed esc, 1000kv ntms and 10" props

I have got it flying pretty good, but im strange getting wobbles from time to time.
Im not 100% happy with getting the PIDs dialed in.

Being an A-symmetrical fame does anyone have any advise on tuning the PIDs for roll/pitch so that i get it locked in?
Sep 11, 2012, 08:11 PM
LOAD "FLIP-FPV",8,1
vic20owner's Avatar
Which brand of multiwii? Some of the cheap china versions need a lot of filtering to work correctly... if it is a quadrino, make sure it is the latest.. the one before was recalled and had the wobble you describe. Also which firmware are you running? The latest?

The multiwii can be tough to tune at times.
Sep 11, 2012, 08:22 PM
Registered User
Judar's Avatar
its a Crius MultiWii Standard Edition Flight Controller V1.0 SE
I have updated it from 2.0 to 2.1 through arduino
and the only things i have changed in the sketch are...

#define QUADX
#define MINTHROTTLE 1064 // special ESC (simonk)
and
#define CRIUS_SE // Crius MultiWii SE
Sep 11, 2012, 08:24 PM
Registered User
Judar's Avatar
this afternoon ill see if i can record some flight so i can show you what its doing.
Sep 12, 2012, 12:34 AM
Fly Chitty Chitty Bang Bang!
EarthOrbiter's Avatar

Hoverthings beggining build


Got the frame in today. The setup as shown without the powertrain has a perfect CG. The video battery will be smaller and a camera added. So far so good. The Gens ace is a 60 to 120 c 3s battery I drain it down to 10 volts with no puffing. Don't try that with a lower c battery. I feel deep emotions, sad, and happy tearing apart the gear from my old experimental frame.
PS; The last frame weigh up was 1641 g with gopro.
Total flight time max was 12 min before the Naza would drop it at second level.
Right now it weighs 1140g I think the flight time will be similar.
Last edited by EarthOrbiter; Sep 12, 2012 at 01:12 AM.
Sep 12, 2012, 04:15 AM
For those in Canada we have more HT-FPV in stock as of yesterday (thanks Tom).
Sep 12, 2012, 12:11 PM
Registered User

Go Pro only?


Hi guys
Just wondering if anyone has mounted a different camera on this frame. It looks like the Go Pro is the holy grail here, but I was curious if anyone had tried and how it's worked out for them.
Thanks
JJ
Sep 12, 2012, 12:31 PM
q {bld(); fly(); brk(); q();}
The Recursion's Avatar
I wouldn't call the GoPro a holy grail, but more of the default. If the GoPro didn't poop EM interference everywhere AND worked well in lower light, I'd consider that title.
Sep 12, 2012, 01:45 PM
LOAD "FLIP-FPV",8,1
vic20owner's Avatar
Hmmm I haven't had any problems with EM with my gopro... but low light yes. But the new gopro resolves that problem.

Maybe the noise problem is from powering the go pro from the flight battery... and it's actually line noise? I use the the gopro internal battery and a separate battery for video tx. Have had no problems at all.
Sep 12, 2012, 01:48 PM
Registered User
Quote:
Originally Posted by vic20owner
Hmmm I haven't had any problems with EM with my gopro... but low light yes. But the new gopro resolves that problem.

Maybe the noise problem is from powering the go pro from the flight battery... and it's actually line noise? I use the the gopro internal battery and a separate battery for video tx. Have had no problems at all.
The interference issue seems to be with the Naza GPS. Haven`t heard of it interfering with other FC`s
Sep 12, 2012, 03:24 PM
q {bld(); fly(); brk(); q();}
The Recursion's Avatar
Correct, the Naza GPS near the GoPro (Hero 2) causes signal degradation. To be fair, other components do this as well, as the Naza GPS appears to be extremely sensitive to EM interference. Someone posted a youtube video with the same problem happening with it powered with the GoPro internal battery and no video out connections, otherwise that'd be my guess to Vic.

Moving the GPS to an arm and putting 3 (yes 3) ferrite rings on the wire seems to have resolved the issue. Before I had it right behind/above the GoPro, which is where the interference is the highest (someone with a spectrometer measured it).
Last edited by The Recursion; Sep 12, 2012 at 03:29 PM.
Sep 12, 2012, 04:46 PM
Principal Member
compuatic's Avatar
Guys i need some help.

I'm about ready to buy all the components to build a HT-FPV. This will be a traditional FPV setup with a gopro and fpv camera in the front. No aerobatics or sport flying. 5.8ghz video gear. I would like some advise on the motor / battery / prop setup.

Currently planning on buying the Sunny Sky 2212 980kv motors since they seem to be a popular quality motor. Please suggest a battery(how many S and what size) and props. Should i go with the 20A ESC or 30A version of SimonK flashed from rctimer? Thanks for the help


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