FPV Pod V2

by ukarmy04 | July 25, 2012 | (18) Posted in Projects

This is my second revision of my FPV pod.  My first FPV pod looked liked the image below and was made from balsa that had been superglued together.  This was not the most durable design as it was prone to breaking at the glue joints.  In addition to this, the camera was mounted in the front and was exposed to damage from rocks and the ground in the event of a crash.

For more information about my original FPV pod, please see the build log on my website:  $160 FPV Setup



So for my second version, I wanted an industrial design that was more durable than balsa.  I wanted something that would be more robust and offer protection for the vital components. This is why I chose to use Aluminum for my FPV Pod V2.  The Aluminum is 28 gauge sheet metal that I bought from Home Depot.  I cut out a strip of the aluminum 39mm wide and bent it into a U-shape to form the pod.  The front of the pod has a 5/8" hole drilled through it for the lens housing.  In addition to this, I drilled two smaller holes on either side of the lens housing so that I could secure the camera to the aluminum.



On the back side of the pod, I followed the same method I used on my FPV Pod V1.  I placed my 5.8GHz transmitter up against the aluminum with a layer of foam in between.  I then used black PVC heat shrink to cinch the transmitter to the aluminum body.  Lastly, I cut a small square in front of the transmitter heat sink to open it up to a little airflow.  



The wires connecting the two components are custom made. One is a servo wire which connects to the proprietary camera connector.  The other is a JST connector that connects into a servo lead to supply the pod with power.



A couple of things to note about this setup:

The AUW of this pod is 50 grams.  I'm not sure if that's considered heavy or light in the world of FPV, but I do know that it is plenty light enough for all of my models - airplanes and quadcopters alike.  

I have done range and orientation tests with this setup using multiple antennas and I have not had any issues with RF interference or any sort of strange EMI issues due to the aluminum body.  The FPV Pod V2 is functionally identical to my original FPV Pod, just more durable. 

The aluminum body of this pod seems to flex quite a bit.  However, when I used the pod to fly FPV on my quadcopter, the footage was amazingly smooth.  I'm not sure how this works or what is causing it, but I suspect it has something to do with the aluminum body and the velcro mounting system that isolate the camera from vibrations.  A great plus!

If you have any questions or comments, feel free to contact me or post a comment in the comments section below.  Hope you enjoyed!




COMMENTS

bikeson22 on August 1, 2012
very nice thanks
Log In to reply
colorex on July 26, 2012
Great design! I guess the aluminum also works as a heatsink.
Log In to reply
ukarmy04 on July 26, 2012
Thanks, Colorex. You're absolutely right, I forgot to mention it in the video but the aluminum works really well in distributing the heat from the transmitter and camera.
Log In to reply
Quadra Productions on July 26, 2012
Cool! Maybe put heat shrink plastic over it to keep it safe.
Log In to reply
ukarmy04 on July 26, 2012
Yeah, that's a good idea. I'll look into how to do this without squishing everything too much.
Log In to reply
Nonamerc on July 26, 2012
This is all theory but....


Carbon fiber gives interference because it contains metall. Soo I think that aluminium would also give interference.. Did you flew it already?
Log In to reply
ukarmy04 on July 26, 2012
I don't think carbon fiber is metal. It is a composite material and is classified as a non-metal. However, carbon fiber does shield radio signals when in close proximity due to the fact that it is conductive and will reflect the radio signal. That being said, the aluminum in my FPV pod doesn't seem to be causing any sort of issues with radio interference. I've tested multiple antennas from different orientations and various ranges and the signal seems to functioning just as it did with my balsa FPV pod. All of the tests were done with flights on my quadcopter.
Log In to reply
Nonamerc on July 27, 2012
Locall hobby shop guy sad that. Did not tested it myself, good to hear that its working.
Log In to reply
jjc1975 on July 31, 2012
Great work
Would work great for getting rid of heat also. Maybe a bead of good old hot glue under the pcb of the cam to fill that gap between the mount and cam.

Log In to reply
ukarmy04 on July 31, 2012
Thanks! Yeah, it works great as a heat sink for that 200mw transmitter. I'll give the hot glue a try and see how it works.
Log In to reply
hans on July 30, 2012
If this is the 200mw version you could run it without the heat sink to save weight. Maybe turn it around then the bracket will be you heat sink instead.

Do you power this with 5v from the receiver/bec? According to specs this is a 12V camera?
Log In to reply
ukarmy04 on July 30, 2012
That's very interesting. I'll give that a try soon to see how it handles the heat. Yes, this a 12V camera and it receives its power from the VTX. If I remember correctly, the 3 outputs of the transmitter are 12V, GND and VIDEO. These are what I have plugged into my camera.
Log In to reply
hans on July 30, 2012
Okay and where does the VTX get it's power? I power it from a 3s lipo directly but maybe I could also power it from the receiver/bec with only 5v then? Does it have a step up circuit for the camera?

I know not really related to your project anymore but I noticed the servo type connector so I was thinking you do it that way.
Log In to reply
ukarmy04 on July 30, 2012
Actually, I do power the VTX with a 3s LiPo. If you take a look at my other article "$160 FPV Setup", you'll see that I use an LC circuit in between my 3s battery and the FPV pod. One side of the LC circuit connects to the balance plug of a 3s battery and the other side connects to the servo lead coming from my FPV pod. The main reason I chose to use a servo lead was so that I could extend the distance between my battery and my FPV pod by using a simple servo extension, rather than building a custom power cable.
Log In to reply
hans on July 30, 2012
Okay got it, thanks!
Log In to reply
subsonichobby on September 23, 2012
Here is how I do mine.

http://subsonichobby.blogspot.com/2012/09/home-made-fpv-console-setup-ez-hawk-sky.html
Log In to reply

You need to log-in to comment on articles.


FPV Pod V2