Using keychain cams on the slope - RC Groups
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Mar 15, 2010, 05:48 PM
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Using keychain cams on the slope

Saturday I was flying and filming on our local slope at Ålleberg, "chasing" paragliders.

I used two keychain cameras. One mounted on the glider and one on my cap. The camera is secured with a rubberband and a velcro in the nose of my Wurst. The other black thing behind the camera in the picture above is a keychain alarm that I use to find the glider when it disappears in the "jungle".
I also used my Panasonic Lumic when filming the paragliders in the beginning of the video (the widescreen shots).

Here is the result:
Nio tepåsar och en Wurst (2 min 30 sec)

Watch out for the man with the hat in the end of the movie as he almost looses his head without knowing it...

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Mar 15, 2010, 11:29 PM
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rotagen's Avatar
Just made my first vid with one of these ebay keychain cams today (on my cap), for the price the quality is amazing, problem is the angle was wrong, so I didnt get much.

How did you mount it on your cap to get the angle right?

The thing weighs around 15 grams, very light, but my planes are all on the light side, around 8-10 ounces and sorta underpowered so I am a bit hesitant to strap er on.

Theres a thread somewhere where a guy took one apart and installed a tiny lipo, and lost a lot of grams. Also supposedly you can hook it up to a servo extension and power it through the receiver?

thanks for this!
Mar 16, 2010, 03:03 PM
Registered User
Very cool. I like the rubber band mount.

I ordered two of those keychain cams last week. At $13 USD each, its worth experimenting with.

Mattias, did you have any problems with the focus of the lens? Some people are reporting the lens needs to be unglued and refocused.

Based on the yellow timestamp, that camera appears to be what people are calling the "#3 camera". Someone has created a Virtualdub filter to remove most of the timestamp:

Mar 16, 2010, 04:02 PM
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chip.greely's Avatar
How did you fly & video your Wurst while watching/videoing those Jellyfish flying at your head?
Mar 16, 2010, 04:36 PM
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AgoMago's Avatar

Keychain slope flying

The keychain on Fledge 2B tip view

Bassano 06-03-2010 (9 min 39 sec)

Mar 16, 2010, 07:59 PM
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dav3uk's Avatar
Here is my first go with the keyfob cam

Thing 2m Slope soaring with keyfob cam (10 min 43 sec)

unedited as im in work
Last edited by dav3uk; Mar 17, 2010 at 02:43 PM.
Mar 16, 2010, 11:59 PM
Registered User
Check this video out w/keychain cam on tail of 48" Fat Albert.

48" Fat Albert sloper w/keychain cam facing rear (5 min 57 sec)
Mar 17, 2010, 12:03 AM
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Where do you get these key chain video cams?
Mar 17, 2010, 12:19 AM
Xpress..'s Avatar
eBay, where else?
Mar 17, 2010, 12:50 AM
Registered User
Originally Posted by Arbo
Where do you get these key chain video cams?
This page has most of the info you'll need to know (there's also a gigantic thread in the AP forum):

The version I purchased, which seems to have the best performance and is the one most RCG'ers are using, is the so-called #3 model.

The two Ebay sellers confirmed as selling the #3 are eletoponline365 and joymyzone. I found prices at the former to be a little lower ($13.38 shipped) so purchased from that seller. Estimated ship time is 1-2 weeks from Hong Kong. I should be getting mine in about a week.

Mar 17, 2010, 12:58 AM
Registered User
Originally Posted by paul66-427
Check this video out w/keychain cam on tail of 48" Fat Albert.

How did you attach the camera, tape?

Mar 17, 2010, 01:24 AM
Registered User
Yes just tape it on aiming where you want to film, turn it on and chunck it.
Mar 17, 2010, 06:16 AM
Registered User
It took some trials and errors before I learned to position the cap in the right and same position every time. But the hardest part in filming from the cap is to avoid turning the head from the plane. Here is a picture of my cap:

I think the focal length of the camera is too big to be useful when using the camera indoors and at low heights. To get a more wide-angle shoot I have tried to mount a lens in front of the key chain cam. I will be back with more information about my test later.

I currently have three of this #3 key chain cams and one of them is a bit nearsighted. I haven’t refocused it as it is perfect to use at distances around 1 m.

The rubber band is just for extra precaution as we sometimes are flying full contact combat on the slope. Normally I use only Velcro to mount the camera.

Next weekend I will be trying to film other gliders on the slope while combating...
Mar 17, 2010, 02:41 PM
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Mar 17, 2010, 02:50 PM
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Originally Posted by secondflight
To get a more wide-angle shoot I have tried to mount a lens in front of the key chain cam. I will be back with more information about my test later.
I've read some people are using the so-called "jelly" lens with their keychain cams:

Some people are saying mounting the jelly lens to the rounded keychain is a little tricky. Whatever lens you're using, I'll be interested in hearing how it goes.

I'll also be using my cam in combat so the rubber band sounds like good insurance


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