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HelicopterAerial Photography and Video › I have a dilemma (Eagle Tree OSD installation)
06-02-2009 06:32 PM  8 years agoPost 1
iskoos

rrKey Veteran

Orlando, FL

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No there is nothing wrong with Eagle Tree product. I give them 5 star.
My problem is about OSD installation. This OSD unit goes between camera and video Tx. I have both of these units on the camera mount(Underslung). I can easily connect the OSD there; No problem at all. But the OSD gets the data from eLogger unit which goes between the flight battery and the ESC and all of these units are on the helicopter.
Well, I can easily wire the eLogger to OSD but I have a little problem here Mine is 360 pan mount!.. If I had a non-pan mount, this would be no problem.
I have been thinking about this and couldn't come up with any solution. So I am asking you guys. What are my options? Is there any other than making it fixed mount?

Hope you guys can think of something I couldn't

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06-02-2009 06:36 PM  8 years agoPost 2
Rappy 60

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Paris, France

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Is it possible to run the wires through the pivot point (hollow bolt/rod)? If not, you will need some sort of slip ring (basically several disks with contacts).

Dale

Load "*",8,1

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06-02-2009 07:23 PM  8 years agoPost 3
iskoos

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Orlando, FL

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The bolt is not hollow.
Slip ring? Like something similar to what is used in steering wheels?

I can't believe nobody else ran into this problem before. Most of the guys must be using fixed mount. Or they don't use OSD at all.

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06-02-2009 10:05 PM  8 years agoPost 4
BigguyOz

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Forster, New South Wales, Australia

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What data are you trying to get to the OSD from the heli itself? I believe the positional info (altitude, speed. direction etc) could come from the mount, so the main things from the heli would be drive battery usage/remainder and RPMs.

Because of the need to avoid any wiring between mount and heli, I think you have to decide whether the data from the heli is more or less important than the data from the mounted equipment.

Tony Stott

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06-03-2009 12:36 AM  8 years agoPost 5
Rappy 60

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Paris, France

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Because of the need to avoid any wiring between mount and heli, I think you have to decide whether the data from the heli is more or less important than the data from the mounted equipment.
Unfortunately its an OSD, so there will be some wiring from the heli to the mount if he wants to display the heli stuff.
Slip ring? Like something similar to what is used in steering wheels?
Yes exactly like that, how many wires are we talking about here?

Dale

Load "*",8,1

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06-03-2009 04:31 AM  8 years agoPost 6
iskoos

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Orlando, FL

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Well Tony. All those little sensors need to be plugged into eLogger.
I can remove the eLogger from the heli and mount it down somewhere on the mount and altitude sensor, gps sensor etc. would work well but then I won't be able to read the amp drain and main battery voltage which is more important than any other data for me.

Rappy, all the ports on eLogger have either 3 or 4 wires so it will be max of 4 wires we are talking about.

So far I didn't hear anything back from Eagle Telemetry. I hope they can come up with some brilliant idea. Though I don't think they will be able to.

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06-03-2009 06:24 PM  8 years agoPost 7
rerazor

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Mich.

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Thats the weakness of a 360 pan mount. You have to have separate Rx's. I'm going to look at the concept of running wires thru the pivot shaft. The VR360 has a hollow "main shaft".

Robert

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06-03-2009 07:07 PM  8 years agoPost 8
tabbytabb

rrElite Veteran

seattle

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My solutions were:

1. Run dual downlinks
2. drill out the center bolt (works perfect BTW)

Now I have a setup with a slip ring so no problemo at all.

Best,

Tabb

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06-03-2009 07:35 PM  8 years agoPost 9
rerazor

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Mich.

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Any pics of this said slip ring?

Robert

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06-03-2009 07:47 PM  8 years agoPost 10
tabbytabb

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seattle

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Not with me....slip ring might be the wrong term though. Basically it is a big bearing with a hole in the middle similar to the copterworks pan bearing with a huge hole in the middle.

T

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06-03-2009 08:08 PM  8 years agoPost 11
rerazor

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Mich.

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Hmmm, now you have me thinking.

I'm sure you don't have it on you as you travel the world.

Robert

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06-04-2009 04:53 PM  8 years agoPost 12
iskoos

rrKey Veteran

Orlando, FL

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Bill from Eagle Tree emailed me and he said the would be to use some sort of rotatable coupling. This is also what Rappy 60 was talking about. I don't know where to find such thing though

Tabby,

Drilling the centerbolt is not an option for me. It is not thick enough.
Thinking of dual downlink option, if I get another donwlink Tx and install the OSD on helicopter, can I read the data from the elogger if I switch the channel between downlink Tx and camera Tx at downlink Rx?
It is a bit confusing, I had bought the following Rx from the range video:

http://www.rangevideo.com/index.php...&products_id=26

Can this Rx get singnal from two different Tx in the same freq. but different channel?
And also there would be no camera on the heli, so would I be able to see the data on a black screen?

And if all this work, I still need to get a hold of Vova to buy another downlink Tx. That would be hard to accomplish...

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06-04-2009 08:59 PM  8 years agoPost 13
Rappy 60

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Paris, France

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Can this Rx get singnal from two different Tx in the same freq. but different channel?
Yes, but if its 900Mhz, you are only allow to use Ch1 here in the US legally.

The problem you will have with the "slip ring" is that it has to be mounted in the center of the pivot point (aka.. it will have to be able to bear the weight of the camera).

Regards,

Dale

Load "*",8,1

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06-05-2009 08:48 AM  8 years agoPost 14
macsgrafs

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Barnstaple, Devon, UK

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I'm in the same boat, 360 degree mount under the heli. I bought the Elogger + OSD + GPS & have yet to mounth them on the heli because of the rotation issues, so I will be watching this thread closely.

Ross

Seems to me that ALL heli's beat the air into submission

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06-05-2009 08:58 AM  8 years agoPost 15
Louisiana Aerial Imaging

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Lafayette, Louisiana USA

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06-05-2009 11:06 AM  8 years agoPost 16
BigguyOz

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Forster, New South Wales, Australia

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Now if someone can integrate that into the main bearing on a mount, you would be in business!

Tony Stott

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06-08-2009 05:44 PM  8 years agoPost 17
iskoos

rrKey Veteran

Orlando, FL

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I thought about this once again and it looks like the bottom line is: Without a slip ring or running wires through the center bolt as the above guys suggested, what I want to do looks almost impossible to achieve.
Now, if I would be willing to give up on main flight battery data, then it would be possible to install everything on the mount and I would be good to go. But the most important thing fro me is that flight battery data... So no easy solution for me with what I have...

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06-08-2009 09:40 PM  8 years agoPost 18
HawkEyeMedia

rrApprentice

Fort Worth, Texas

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Put a small board camera on a servo that can be tilted from level to vertical. Use this for the video to overlay your data on. If you're shooting panos, there's really no need to actually see the view through the dslr camera. All you need to be able to do is look straight down to verify your position.

This is the solution I use.

Mark LaBoyteaux
HawkEyeMedia.com

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06-08-2009 11:11 PM  8 years agoPost 19
PhotoHigher

rrApprentice

Wellington, New Zealand

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This is proberbly not much help for you right now but we are in the process of developing a pancake type slip ring. There are a couple of small technical issues we need to get sorted but we hope to have a prototype in the next month.

Kimberley Attwell - Photo Higher

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06-09-2009 04:30 PM  8 years agoPost 20
iskoos

rrKey Veteran

Orlando, FL

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Hey Mark, I am sure what you are suggesting has its own use but it won't help me much on what I am trying to do. Or maybe I missed your point.
At this time, all I care is the ability to wire OSD(that is installed on 360 pan mount) to elogger that is installed on heli. And I can see two options to do this:

1)running the wire through center bolt (not possible in my case)
2)installing a slip ring around the center bolt

I will give the 2nd option a shot and see if I can fabricate something for my mount. It is not a rocket science but also won't be very easy. I don't have much time because...

Kim, you should share that development with is when it is done...

Thanks

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HelicopterAerial Photography and Video › I have a dilemma (Eagle Tree OSD installation)
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