image
Results 1 to 4 of 4

Thread: Help finding Small Camera with Small Transmitter & Small Receiver

  1. #1
    Navigator
    Join Date
    Nov 2011
    Location
    Ireland
    Posts
    38

    Help finding Small Camera with Small Transmitter & Small Receiver

    Hi there,

    I'm very new to RC so please excuse any stupid statements. I am a student taking part in a rocket project. At about 80-90km the rocket will deploy a spherical probe 45cm in diameter from the side. What we would really like to do is put a camera and wireless transmitter in the probe sending video back to the receiver in the rocket for viewing on retrieval. We would like to take video from a distance of about 1.5 up to 10 meters from the rocket. As space and weight are an issue we really need components which are as small as possible.

    The smallest combination I can find at an affordable price are:
    Camera:
    http://www.fpvhobby.com/83-1-gram-nano-camera.html

    Transmitter:
    http://www.fpvhobby.com/transmitter/...ansmitter.html

    Receiver:
    http://www.fpvhobby.com/32-4-ghz-receiver-module.html

    However, I have seen mentioned on another forum that some people have had issues with products from FPVhobby getting delayed in customs for failing to meet regulations etc... I'm not sure if this would be the case for Ireland but really can't afford the risk.
    I do also have some concerns about the quality of construction/soldering/operation. Can anyone comment here?

    I need components which can withstand 20g of acceleration but online info for such components seem pretty minimal, and datasheets seem to be very rare.

    I've been looking around for alternatives with similar sizes but can't seem to get all 3 (camera, receiver, transmitter).
    The nearest I can find are:
    Camera:
    http://www.nghobbies.com/cart/index....roducts_id=698

    Transmitter:
    http://www.nghobbies.com/cart/index....products_id=86

    but the receivers are all way bigger.

    I have read that it is not possible to mix and match brands of transmitters/receivers so I'm at a bit of a loss here. Can anyone recommend and alternative solution or vendor with similarly sized products to FPVHobby?

    Thanks very much for your help,

    Jack

  2. #2
    Pilot
    Join Date
    Mar 2011
    Posts
    1,076
    Hey,

    FPVHobby now meet regulations. I'm the guy who had problems with that. I complained til Adnan fixed it for everyone

    They do ship slow sometimes apparently, but well I've had decent success lately.

    For the camera, the 1gr seems fine, for the tx, at 80km I'm not sure this will be enough. You might need a bit more power and in any case a huge RX antenna :-)
    The NG Hobbies camera is probably the exact same camera btw.. they always all hide where they get them from because, we could get them cheaper directly from china otherwise :P (so NGHobbies is cheaper)

    Here is one TX that you may want to think about:

    http://www.dpcav.com/xcart/product.p...cat=249&page=2 (its also WAY cheaper than the bulky ones using that very chip)

    (and if you want to get it all from dpcav they've also the 1g camera here http://www.dpcav.com/xcart/product.p...cat=274&page=1)

    Its 450mW and uses standard airwave 2.4Ghz channels. Its very light because its the TX alone without a bunch of crap on top of it. Been using them and they're really OK. I think fmkit uses them too.

    You'll have to remove the regulator of the AW TX if you wanna power it all via a 1S lipo (3.7-4.2V) otherwise you'll have to add a regulator to meet the 3.3V

    I suggest a good RX and a patch on the RX side at the minimum.

    Finally please note that I doubt any of these component have been rated for 20G of acceleration (or any at all), so you'll have to test for yourself.
    Last edited by ZobZibZab; 5th November 2011 at 10:25 PM.

  3. #3
    Navigator
    Join Date
    Nov 2011
    Location
    Ireland
    Posts
    38
    Hi ZobZibZab,

    Quote Originally Posted by ZobZibZab View Post
    FPVHobby now meet regulations. I'm the guy who had problems with that. I complained til Adnan fixed it for everyone
    Ah, very good. I had actually been emailing him last week and he was getting back to me the same day so that's positive.


    Quote Originally Posted by ZobZibZab View Post
    for the tx, at 80km I'm not sure this will be enough. You might need a bit more power and in any case a huge RX antenna :-)
    You know I only need it to go a distance of 10m right? It will just be 80km in the air when transmitting but the Tx and Rx will only be 10m apart.

    Quote Originally Posted by ZobZibZab View Post
    The NG Hobbies camera is probably the exact same camera btw.. they always all hide where they get them from because, we could get them cheaper directly from china otherwise :P (so NGHobbies is cheaper)
    Ah right. Didn't realise that. Makes sense though.

    Quote Originally Posted by ZobZibZab View Post
    Here is one TX that you may want to think about:

    http://www.dpcav.com/xcart/product.p...cat=249&page=2 (its also WAY cheaper than the bulky ones using that very chip)

    (and if you want to get it all from dpcav they've also the 1g camera here http://www.dpcav.com/xcart/product.p...cat=274&page=1)

    Its 450mW and uses standard airwave 2.4Ghz channels. Its very light because its the TX alone without a bunch of crap on top of it. Been using them and they're really OK. I think fmkit uses them too.

    You'll have to remove the regulator of the AW TX if you wanna power it all via a 1S lipo (3.7-4.2V) otherwise you'll have to add a regulator to meet the 3.3V

    I suggest a good RX and a patch on the RX side at the minimum.

    Finally please note that I doubt any of these component have been rated for 20G of acceleration (or any at all), so you'll have to test for yourself.
    Wow, that's all great info. Very informative. I wasn't sure about just using a Tx chip as I thought there would be a lot of work adding the extra stuff. Hmmm.... definitely something to think about. Do you reckon it would be possible to power the Tx from a Super-capacitor for ~10 seconds after the main power is cut?

    Cheers,

    Jack

  4. #4
    Pilot
    Join Date
    Mar 2011
    Posts
    1,076
    I'm not sure about the 125mW for the 10km rating (i expect you meant 10km by 10m but in theory that's possible. As usual it matters a lot on the RX side.

    I don't know either how long a capacitor can supply any of those txes (depends on which), but they're kinda hungry. I'd just use a separate battery and either remove the regulator if applicable (airwave), either add one. Safer.

    The tx board is quite easy to work with and it's shielded so its not a bad choice imo. if you look at the datasheet you'll see its just a matter of supplying power, antenna, and select a channel (either solder a switch or just use the default channel/solder manually a fixed channel)

    To remove the regulator you've to pop the shield and put it back tho, and be careful not to damage it/that its shielded back correctly. When its not correctly shielded performances degrade
    Last edited by ZobZibZab; 14th November 2011 at 10:03 AM.

Similar Threads

  1. Aerosight's small Pan/Tilt system for the DIY guy
    By Aerosight in forum PILOT'S LAB
    Replies: 16
    Last Post: 23rd November 2012, 01:41 PM
  2. Small allen wrench for brushless motors?
    By GreenAce92 in forum OFF-TOPIC
    Replies: 5
    Last Post: 1st January 2012, 12:11 AM
  3. Replies: 19
    Last Post: 13th December 2011, 01:26 PM
  4. RSSI voltage range too small
    By chatch in forum RC TECH
    Replies: 0
    Last Post: 5th December 2011, 03:24 AM
  5. Recommendations for small footprint base station.
    By Hucker in forum Ground Stations...
    Replies: 11
    Last Post: 31st October 2011, 12:07 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •