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Thread: LED signboards

  1. #1
    Flashaholic
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    Default LED signboards

    You know those big electronic signs with lights, color, animation? Well this little thing is where it all starts!

    *note: this is a 7 mb file, using windows media. It will be a long wait for dialup users, but its worth it.

  2. #2

    Default Re: LED signboards

    Sweet! Definitely worth the wait dial-up users.

  3. #3
    Flashaholic*
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    Default Re: LED signboards

    my Albertson's just installed two 4'x3' LED billboards in their store. Unfortunately, it looks like they need to turn down the red channel quite a bit, as everything the board shows has a pink cast to it.

  4. #4
    Flashaholic* RonM's Avatar
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    Default Re: LED signboards

    Talk about buying LEDs in bulk. They say the company uses 100,000,000 LEDs in their signboards per year.

  5. #5
    *Retired* The_LED_Museum's Avatar
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    Default Re: LED signboards

    Looks like I'll know what the movie is in about 25 minutes... :O

    (Edit) OK, it's about half an hour later now. Definitely worth the wait for dial-up users to get. [img]/ubbthreads/images/graemlins/grin.gif[/img] [img]/ubbthreads/images/graemlins/grin.gif[/img] [img]/ubbthreads/images/graemlins/grin.gif[/img] [img]/ubbthreads/images/graemlins/grin.gif[/img] [img]/ubbthreads/images/graemlins/grin.gif[/img]

  6. #6
    Flashaholic* Negeltu's Avatar
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    Default Re: LED signboards

    What an amazing video!

  7. #7
    Flashaholic*
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    Default Re: LED signboards

    The advantages of broad band, good insight on the big screen, the company featured, think is SmartVision:

    http://www.smartvision.com/

    Adam

  8. #8
    *Flashaholic* PhotonWrangler's Avatar
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    Default Re: LED signboards

    Yes, it's SACO. I know a couple of the people
    who work there. Neat technology, but it's also
    amazing how cranky these systems can be at times
    (not theirs specifically, but in general).

  9. #9
    Flashaholic* Chris M.'s Avatar
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    Default Re: LED signboards

    Groovy [img]/ubbthreads/images/graemlins/cool.gif[/img]

    I`m all too familiar with how fussy electronics can be when they rely on lots of multipole connections. As a fire alarm engineer I work with rat`s nests and connector-farms all too often. One loose header and the whole thing goes mental. Usually it`s not near that sort of magnitude but still can take a while to nail the problem.

    Those things must be a real bitch to fault-find when they go wrong. I can`t believe how many connections they have inside. One slightly soft IDC crimp and you could be searching for hours.....

    ...but I still want one! Imagine having one of those out in your back yard to watch TV on!


    [img]/ubbthreads/images/graemlins/eek.gif[/img] [img]/ubbthreads/images/graemlins/tongue.gif[/img]

  10. #10
    Flashaholic*
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    Default Re: LED signboards

    There is one here in Portland that isn't popular, you are driving home about 2am and you turn this corner and your eyes are BLINDED by this huge sign

  11. #11
    *Flashaholic* PhotonWrangler's Avatar
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    Default Re: LED signboards

    Fussy indeed. Besides the obvious problems of
    passing high-speed data through many interconnects
    that are out there in the weather, there's the fact
    that every tile has it's own CPU so that it knows
    what portion of the picture to display in relation to
    it's neighbors. A 6x10' screen might have 60 individual
    CPUs, all communicating back to another CPU that controls
    the scaling, etc, plus more CPUs to manage the actual
    content. Every now and then one of them will wack out
    and lose it's place in the big picture. Sometimes the
    results can actually be rather amusing, although not
    to the client, of course. [img]/ubbthreads/images/graemlins/icon15.gif[/img]

  12. #12
    *Flashaholic* PhotonWrangler's Avatar
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    Default Re: LED signboards

    There are photocell-based controls that can read
    the ambient light level and adjust the boards
    accordingly. Some systems can also dim them down
    based on time of day. If they're running the boards
    at a full 5000-6000 nits in the middle of the night,
    they're not only blinding motorists, they're wasting
    power and aging the LEDs faster. Besides, an annoying
    ad is hardly an effective one.

  13. #13
    *Flashaholic* PhotonWrangler's Avatar
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    Default Re: LED signboards

    [ QUOTE ]
    Chris M. said:
    Groovy [img]/ubbthreads/images/graemlins/cool.gif[/img]

    ...but I still want one! Imagine having one of those out in your back yard to watch TV on!

    Once they commercialize organic LED displays
    and recoup the development costs, you'll
    be able to hang one on your wall with a
    couple of pieces of scotch tape. [img]/ubbthreads/images/graemlins/cool.gif[/img]

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