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Thread: Video Feed

  1. #1
    Newbie
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    Oct 2004
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    Video Feed

    I'm trying to put together a telemetry video system on a race car. It will consist of 2-4 video cameras. Because of the environment, I need light and cheap components. I'm considering the following:

    1) USB2 Webcams, into a USB hub.

    2) Fire-i cameras, as they can be daisy chained into a firewire port. (Does anyone know of limitations/performance of multiple cameras on one port?

    3) Several 'spy'/'pinhole' cameras, with analog inputs going into a multi channel pci card;

    Whichever method I use, the input will have to be handled by a small processor (eg M10000 Mini-ITX).
    Eventually, the data will also be transmitted real-time to the pits.

    Does anyone know of any formus/howtos/sites where people have done this and reviewed different cameras?

    Alex

  2. #2
    Variable Bitrate
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    Elgin, IL
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    check out the cams that are used for solo.

    http://www.chasecam.com/bulletcam.htm

    you'd still need some way to multiplex multiple cameras together and send it to the pit though. there's lots of dedicated hardware for that. u don't need a PC to do this

  3. #3
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    Oct 2004
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    Thanks for the link! I'll keep them in mind; however, I was looking for somewhat cheaper (under $100) cameras... is there a review of the X10, ebay mini cameras, etc somewhere?

    Also, what dedicated hardware can you point me to? I've seen various setups that do a once-a-lap data 'dump', but I'm looking for continous transfer.
    I wanted a PC because a) its cheaper, b) its fun to do it yourself, c) I will also run a GPS/accelerometer nav system as well as daq and a display.

  4. #4
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    i think a m10000 won't be enough cpu power to handle the multiplexing of the video though. i have seen some cards that do it though.

    don't get the x10's. the quality on those really suck.

    once a lap? it'd need to be a really really fast network connection. if u figure a lap is gonna be like 1 minute or 2 minutes, that's a 10+meg file that you'll want to transfer within a matter of a second (when the car passes within range of the receiver in the pit) maybe sometihng for 802.11a but then the range for the receiver is decreased.

  5. #5
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    Which cards would do the multiplexing? I want to get at least 25fps (recorded) from each camera.

    As for the once a lap.. that's what old systems used to be like. I want to have a continous feed.

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