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Author Topic: wireless video transmission from composite camera?  (Read 3641 times)

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Offline blackbeardTopic starter

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wireless video transmission from composite camera?
« on: September 04, 2009, 01:28:07 PM »
so i got a cheep camera off of deal extreme and i was wondering if it's possible to transmit the signal from the camera wirelessly to my tv tuner card. any suggestions? can my arduino pull it off?
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Offline Razor Concepts

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Re: wireless video transmission from composite camera?
« Reply #1 on: September 04, 2009, 02:01:41 PM »
Your adruino can not pull it off. Use a dedicated video TX and RX. Also, dealextreme sells wireless video setups for 50 bucks I believe.

Offline Half Shell

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Re: wireless video transmission from composite camera?
« Reply #2 on: September 04, 2009, 03:42:50 PM »
Focal price dot com for even cheaper (and unfortunately, not legal in the US) wireless camera set ups.

Arduino does not have the processing power for streaming video. Few micro controllers do - they have to be dedicated to video processing, such as some of Texas Instrument's DaVinci line.

Transmitting video with an actual transmitter and receiver, however, is very simple and not too expensive. Just look at deal extreme or focal price and you should find what you need.

Offline blackbeardTopic starter

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Re: wireless video transmission from composite camera?
« Reply #3 on: September 04, 2009, 05:59:10 PM »
oh i didn't think of a pre-built transmitter. i was mostly thinking that i'd link it to a tv capture card on my laptop. basically make a mini m.a.l.p :P. so i'm thinking a set of these

http://www.dealextreme.com/details.dx/sku.19761

and my tv capture card should do it. might add microphone too. speaking of which do you need to convert anything to connect a regular laptop microphone (soon to be parabolic) to that receiver other then solder on an rca plug?
"sure, you can test your combat robot on kittens... But all your going to do is make kitten juice"

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Offline Half Shell

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Re: wireless video transmission from composite camera?
« Reply #4 on: September 04, 2009, 08:23:18 PM »
I'm 95% percent sure that just the plug is what's needed, as I've noticed the microphone port to work with much, MUCH older microphones (which are clearly all analog).

That's a pretty sweet video transmission set. Any idea on overall range?

Offline Soeren

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Re: wireless video transmission from composite camera?
« Reply #5 on: September 04, 2009, 09:22:30 PM »
Hi,

[...] MUCH older microphones (which are clearly all analog).
You mean you've got some of them fancy new digital microphones where the output is either "0" or "1" and you have to go "testing, 0001, 0010, 0011" when you install them? ;)
Gee, I'm glad all my mikes, including my 48V large-membrane capacitor studio mikes are all analog, so they can go "testing, A, B, C" as well, when I do audiology research ;D


That's a pretty sweet video transmission set. Any idea on overall range?
Well, the page says 150m (but my guess is less than half that).
Regards,
Søren

A rather fast and fairly heavy robot with quite large wheels needs what? A lot of power?
Please remember...
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Offline Soeren

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Re: wireless video transmission from composite camera?
« Reply #6 on: September 04, 2009, 09:36:06 PM »
Hi,

[...]  do you need to convert anything to connect a regular laptop microphone (soon to be parabolic) to that receiver other then solder on an rca plug?
I guess you want to put it on the transmitter?

The answer is a definitely maybe, it all depends on your microphone, as some of them are electret types which needs a bias voltage.
The easy way to find out is to connect the one you have to a home stereo and test if it delivers a healthy punch or not.
If it don't, a lithium button cell and a resistor could be used for the bias.

To make a usefull parabolic mike, you need a fairly large dish, if you want to get the lower part of the speech spectrum unfiltered.
Regards,
Søren

A rather fast and fairly heavy robot with quite large wheels needs what? A lot of power?
Please remember...
Engineering is based on numbers - not adjectives

Offline blackbeardTopic starter

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Re: wireless video transmission from composite camera?
« Reply #7 on: September 05, 2009, 06:20:11 AM »
well in any case i got a composite mike. i think that the transmitter and receiver work allot like a wifi router so i'm going to try a cantenna to improve the range. now i just need to find my RC controller and reciever
"sure, you can test your combat robot on kittens... But all your going to do is make kitten juice"

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Offline kd5kfl

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Re: wireless video transmission from composite camera?
« Reply #8 on: September 05, 2009, 07:22:51 PM »
straight from the horses orifice:

Quote
Q: Why does my 2.4GHz camera/receiver kit give me such a bad picture or no recognizable picture? Is this a defective product?

A: No, absolutely not a defective product, each kit has been fully tested before it is shipped to you. We often receive this question, here is the reason. 2.4GHz frequency band is a pretty busy band, there are a lot of products use this same frequency band. If you have any other electric appliance that uses the 2.4GHz frequency band, those appliances will cause interference to your 2.4GHz wireless camera/receiver kit and the signal between the camera and receiver will be disrupted. Common consumer electric appliances also use the 2.4GHz frequency band are cordless phones,  wireless computer network, etc. If you have those appliances in your house or in the houses/buildings around you, these appliances must be turned off for your wireless camera/receiver kit to work. Usually in order to make sure your kit has nothing wrong, we suggest you to bring the kit to and use it in a different place where it is sure there is no wireless electric appliance around.


from http://home.comcast.net/~yanlab/usa/questions.html

you want a quality signal and decent range, go with 900 MHz FM:

http://www.supercircuits.com/Wireless-Security-Devices/Wireless-Video-Receivers/AVX900R1

http://www.supercircuits.com/Wireless-Security-Devices/Wireless-Video-Links/AVX900T4

The receiver is as reliable as an anvil. the transmitter is as reliable as a Yugo

Offline blackbeardTopic starter

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Re: wireless video transmission from composite camera?
« Reply #9 on: September 05, 2009, 08:38:55 PM »
yikes $94 for the reciever and $70 for the transmitter! i already ordered the other one so i'll see how it goes. 
"sure, you can test your combat robot on kittens... But all your going to do is make kitten juice"

First step: Build androids with AI
Next step: Give them vaginas

 


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