# Keychain cam.

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#### UPscaler

I read a few good reviews on here about the $10 keychain cams from china. I'm going to buy one, and I needed to make sure that it's the right one. https://cgi.ebay.com/Spy-Camera-Key...ltDomain_0?hash=item2559744728#ht_5313wt_1004 Also, How should I mount it onto rockets? I understand tape works fine with smaller stuff, but should I come up with some kind of mount for higher velocity rockets? I was thinking when we build our 6x Alpha I can just build a payload bay and a mirror hood, and use my actual HD camcorder. any suggestions are appreciated! Thanks! -Up #### mamba max1 ##### Member Hey, I use a keychain camera on my rockets and R/C 1/8 truck. A few vids on my rockets: https://www.youtube.com/watch?v=qfLyAuacnRY https://www.youtube.com/watch?v=px-x3wzl5os Really can't beat the quality for the price. Because they are so cheap, its not so bad if you loose one. Downside is you have to retrieve your rocket to get the video. I had to wait 5 days to get my first video lol. You have a good one linked. You want that pixel size, and the 30fps. I just use electrical tape to secure it to the side of the rocket. Keep in mind, that you will also need a micro SD card. An 8G card holds an hour of video, but the camera's battery lasts about 2hr. The cameras seem to accept shock well, I've had a few very rough landings with mine on it an it keeps on ticking. Last edited: #### kullas ##### Well-Known Member #### Winston ##### Lorenzo von Matterhorn Here's an excellent keychain video camera tech info site describing what to look for. There are a bunch of different models that look virtually identical but which perform differently: https://chucklohr.com/808/ Based upon the info found there, this camera fits the specs of the preferred keychain camera #3 (while not in keychain form, it's still very small): https://www.dealextreme.com/details.dx/sku.32022 And the file name used as well as the font and color of the time stamp in this video demo from that camera: https://www.youtube.com/watch?v=m5YGnYjaMQk pretty much confirm that it uses the desired chipset with its associated and desired SPCA driver. #### Vanel ##### Well-Known Member I have one of these critters, but can't figure out how to set the time. Something to do with a SetTime text file, but I cannot understand the very poor english and my attempts so far have resulted in no time change in the camera. Anyone done this? Hey, I use a keychain camera on my rockets and R/C 1/8 truck. A few vids on my rockets: https://www.youtube.com/watch?v=qfLyAuacnRY https://www.youtube.com/watch?v=px-x3wzl5os Really can't beat the quality for the price. Because they are so cheap, its not so bad if you loose one. Downside is you have to retrieve your rocket to get the video. I had to wait 5 days to get my first video lol. You have a good one linked. You want that pixel size, and the 30fps. I just use electrical tape to secure it to the side of the rocket. Keep in mind, that you will also need a micro SD card. An 8G card holds an hour of video, but the camera's battery lasts about 2hr. The cameras seem to accept shock well, I've had a few very rough landings with mine on it an it keeps on ticking. #### BEC ##### Well-Known Member There's a big thread on YORF about these and other inexpensive eBay cameras (for which I can't give you the link right now because YORF is down) and a HUGE one on RC Groups here: https://www.rcgroups.com/forums/showthread.php?t=1115052 The ones you want are the versions that take separate micro SD cards rather than those with memory built in. It looks like the one you linked to is of that type. I have flown them both on a rocket (taped to my Fliskits Triskelion with a little bit of shaped foam to adapt to the BT-55 curvature) and on a small RC airplane. Amazing quality for the price. The one rocket flight I've edited down and posted is here: https://www.youtube.com/watch?v=9_PdeNmZxL4 #### MattieShoes ##### Well-Known Member There's a big thread on YORF about these and other inexpensive eBay cameras (for which I can't give you the link right now because YORF is down) and a HUGE one on RC Groups here: https://www.rcgroups.com/forums/showthread.php?t=1115052 The ones you want are the versions that take separate micro SD cards rather than those with memory built in. It looks like the one you linked to is of that type. I have flown them both on a rocket (taped to my Fliskits Triskelion with a little bit of shaped foam to adapt to the BT-55 curvature) and on a small RC airplane. Amazing quality for the price. The one rocket flight I've edited down and posted is here: https://www.youtube.com/watch?v=9_PdeNmZxL4 Wow, that is pretty amazing... Was the parachute the culprit? #### BEC ##### Well-Known Member Wow, that is pretty amazing... Was the parachute the culprit? Yes as you can see in the frame grab at the end. And, of course, too long of a delay. I've since flown it with a C6-3 with rather less "interesting" results. #### RoyAtl ##### Well-Known Member Yes as you can see in the frame grab at the end. And, of course, too long of a delay. I've since flown it with a C6-3 with rather less "interesting" results. That fin was wobbling on the way up. It probably would've detached on landing if the parachute hadn't gotten to it first. #### MattieShoes ##### Well-Known Member I bought one of these a couple weeks ago and it just came in the mail today. I'm gonna tape it to my Barracuda and see how it goes this weekend. I think I ended up with a #2 with a micro-SD slot. In case anybody is curious, it weighs about 14 grams without the keychain portion or micro-SD card. If you look at a new five dollar bill, it's roughly the size of lincoln's head, down to the strip where his name is at the bottom. #### Scott Evil ##### Well-Known Member Here's an excellent keychain video camera tech info site describing what to look for. There are a bunch of different models that look virtually identical but which perform differently: https://chucklohr.com/808/ Based upon the info found there, this camera fits the specs of the preferred keychain camera #3 (while not in keychain form, it's still very small): https://www.dealextreme.com/details.dx/sku.32022 And the file name used as well as the font and color of the time stamp in this video demo from that camera: https://www.youtube.com/watch?v=m5YGnYjaMQk pretty much confirm that it uses the desired chipset with its associated and desired SPCA driver. Thanks for posting these links Winston. I've been worried about un-scrupulousness and product variability amongst overseas vendors. I just ordered one from here... https://cgi.ebay.com/Key-Chain-Spy-...emQQptZLH_DefaultDomain_0?hash=item3a52df8414 ...hopefully I got it right. #### Evo666 ##### Well-Known Member I might have jump on this bandwagon too. #### luke strawwalker ##### Well-Known Member Checked out the ebay link... looks good and the price is right-- though you DO tend to get what you pay for, even with these things... but for$5.98 how can you go wrong?? That won't even buy you lunch nowdays! :jaw:

Check out these links for more info, especially Chuck Lohr's site, as he has just about everything you'd ever want to know about these things on his site...

https://www.chucklohr.com/808/

https://forums.parallax.com/forums/default.aspx?f=15&m=378648

That aught to get you started... the RC Groups thread is LONG but there is literally TONS AND TONS of information in there... I follow that thread regularly because there is SO much information posted (and cool vids).

Good luck and be sure and post your experiences with this Ebay vendor... that price is fantastic... hope he's not selling stuff other vendors throw away... LOL

Later and good luck! OL JR

#### luke strawwalker

##### Well-Known Member
One other thing I forgot to mention-- buy your micro SD cards from reputable (probably local, or newegg.com) sources-- a lot of the TF cards coming with these things are fake memory and not up to par... more info on that at the chuck lohr site...

Some of the flash cards have been faulty or tampered with so that to Windows, it appears to be a 4 or 8 gig card, and Windows says it is (because that's what it tells Windows) but when tested with a secondary test program they turn out to be 1 gig cards... or other than advertised...

Caveat emptor... OL JR

#### luke strawwalker

##### Well-Known Member
I have one of these critters, but can't figure out how to set the time. Something to do with a SetTime text file, but I cannot understand the very poor english and my attempts so far have resulted in no time change in the camera.

Anyone done this?
This thread details how to do it several different times, for several different types of cameras... there are several different ways and tricks to doing it depending on the type of camera and the model.

Good luck! OL JR

#### luke strawwalker

##### Well-Known Member
Thanks for posting these links Winston. I've been worried about un-scrupulousness and product variability amongst overseas vendors.

I just ordered one from here...

https://cgi.ebay.com/Key-Chain-Spy-...emQQptZLH_DefaultDomain_0?hash=item3a52df8414

...hopefully I got it right.
myzone50 has good ratings from the RCGroups thread people...

#### cwbullet

##### Obsessed with Rocketry
Staff member
Global Mod
There are some instructions for the key chain cam.

#### Vanel

##### Well-Known Member
Finally figured out how to set the date/time on my keychain camera.

Today at the local TARC launch, I taped this little keychain cam to the outside of my scratch built Salvage-90, which flew about 10:30, and then to my Fliskits Deuce's Wild, which flew just after 1. Got home and downloaded the movies into my computer for processing, and you can see the results of the Deuce flight at the link below (uploaded it to YouTube, but it's still processing )

https://gallery.me.com/cookewj#100052

The movie above is at standard 640x480 quality, but I must say I am pretty pleased with this purchase.

Sometimes cheap is good

#### Pantherjon

##### Well-Known Member
I didn't get any video:confused2: some good audio though!

#### Evo666

##### Well-Known Member
I didn't get any video:confused2: some good audio though!
I got video and sound.

#### Pantherjon

##### Well-Known Member
Okay..Got it to play the video after I downloaded it and opened in iTunes..

KewlNext time rotate the camera placement 90 degrees so you can get both smoke trails from the motors!

#### UPscaler

##### New Member
I flew my old Estes Longshot 2-stager yesterday with a keychain cam taped onto the side. Videos are at

I see that I am getting some duplicate frames. I'll have to try a different micro-sd card and see if that helps.

I also have a couple rocket videos up using the "gum" cameras.

Alan
Very nice videos. I like how straight the rocket was when it staged. That doesn't happen too often.

#### DAllen

##### Well-Known Member
Here's what happens when the silly rocket wants to be a submarine:

Not sure if the camera is going to make it. It's currently not working quite right.

#### UPscaler

##### New Member
Here's what happens when the silly rocket wants to be a submarine:

Not sure if the camera is going to make it. It's currently not working quite right.
Mental note, keep away from water.

Luckily we don't have any water at our launch site, just gopher holes.

#### DAllen

##### Well-Known Member
Mental note, keep away from water.

Luckily we don't have any water at our launch site, just gopher holes.
We don't have much either - just a 3' wide drainage ditch running the length of our field that usually has about 6" of water in it most of the year. Out of the 300 or so acres the rocket could've landed in it chose that spot. :bangpan:

That's rocketry for ya'.