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crgwbr
08-20-2006, 01:22 AM
Hi all, I'm looking into puting a video camera on my large (200 lb) robot.· I need some way of broadcasting the signal back to my base station.· I'm looking into using a radio module from maxstream, the the XBee Pro OEM (http://www.maxstream.net/products/xbee/datasheet_XBee_OEM_RF-Modules.pdf).· My only question is, is the 250,000 bps that the XBee broadcasts at fast enough for video transmition?· Also, can I hook the data pin on an·RCA jack (video) directly to the datain pin of the module?· I have Googled both of these questions, but can find nothing on it.

Thanks

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NerdMaster
For
Life

Mike Green
08-20-2006, 01:59 AM
What you're suggesting won't work. The output of the camera is an analog video signal. The XBee Pro OEM expects a digital signal. Even if you converted the video to digital, without a lot of heavy compression, it wouldn't go out over a 250KB channel. Much better would be to buy a 900MHz or 2.4GHz analog video transmitter and receiver combination. I believe Jameco has one in their catalog.

Forrest
08-20-2006, 04:02 AM
How about a wireless video camera/receiver with 150 foot range for $30 www.geeks.com/details.asp?invtid=203C-50MW-N&cat=VID&cpc=VIDbsc (http://www.geeks.com/details.asp?invtid=203C-50MW-N&cat=VID&cpc=VIDbsc)

crgwbr
08-20-2006, 07:10 AM
Thanks for the info Mike Green.

Forrest said...
How about a wireless video camera/receiver with 150 foot range for $30 www.geeks.com/details.asp?invtid=203C-50MW-N&cat=VID&cpc=VIDbsc (http://www.geeks.com/details.asp?invtid=203C-50MW-N&cat=VID&cpc=VIDbsc)
I've seen this camera before, However, I'm looking for a range of at least half a mile.· Is it posible to amplify a signal, like the one coming out of a camera like this?

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NerdMaster
For
Life

Mike Green
08-20-2006, 07:24 AM
Jameco does have a variety of transmitters available, up to 1W (<http://www.jameco.com/Jameco/catalogs/c263/P276.pdf>). I would not suggest using an amplifier at 2.4GHz, just get a more powerful transmitter and use a good antenna. The cost goes up, but hey! There are omnidirectional gain antennas (which is probably what you want) that are multiples of 1/4 wavelength. They're relatively sophisticated at this kind of frequency and, if you don't have microwave experience, I'd suggest you stick with commercially made devices.

stamptrol
08-20-2006, 07:47 AM
Just google for almost any supplier of radio controlled aircraft. You will find numerous wireless camera kits in the ranges you're looking for.

I have used Micro Wireless from Texas several times with good success. www.microwireless.net

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Tom Sisk

http://www.siskconsult.com
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bbnoobie
09-03-2006, 12:19 AM
there is also www.ramseyelectronics.com 1/4 mile range and trsnsmitter for 150 but works pretty good only 1 frequency though channel 59