Large 7-segment display project

Discussion in 'The Projects Forum' started by benjo, Mar 31, 2007.

  1. benjo

    Thread Starter New Member

    Mar 31, 2007
    Hi guys,

    This is probably a slightly unusual question. I really have no knowledge in electronics and am not building anything. However, I am doing an assignment for university on a business idea that we have to create a business plan for. The product that we have come up with involves a large 7-segment display. Basically all I need is some idea of how it would be put together, and the costs associated in doing it. A website or company that offers the components would also be helpful.

    The product is a two digit 7-segment-display. Each digit will be 14inches tall and 7 inches wide, making the whole thing 14x14. There will be a pole running from the display which is used as a handle. On the handle will be a "count" button which increases the number by 1 (max 99), and a reset button which brings it back to 0.

    As I said, I have no real knowledge in this sort of stuff. All I really need is some basic costing info.

    Any help is greatly appreciated.

    Thanks in advance,

  2. kender

    Senior Member

    Jan 17, 2007
    Dear Ben,

    DigiKey, is a good place to look for parts. The biggest 7-segment LED they have is 7" tall part # 160-1021-ND.


    P.S. And if you need to brainstorm further, you will have to either become an engineer... or make one interested.
  3. beenthere

    Retired Moderator

    Apr 20, 2004
    You'll have to use discreet LED's to make the display segments that size. The thing will be a bit weighty, as it will need relatively large batteries.
  4. benjo

    Thread Starter New Member

    Mar 31, 2007
    Thanks very mich for the info.

    Just wondering from a large-scale manufacturing perspective, would a company exist that would manufacture this sort of product? Also, would it be best to manufacture the whole thing from individual components, or use a pre-packaged 7-segment-display and add anything we need to add to it?


  5. John Luciani

    Active Member

    Apr 3, 2007
    If you find a company that makes a display that meets your requirements you should
    purchase the display and then add your own custom circuits.

    You will need discrete LEDs. Place a piece of opague plastic over the LEDs to scatter
    the light. To estimate the cost you will need to determine the intensity of the LEDs
    that meet your requirements. If you need high intensity LEDs your display could
    get very expensive. I would recommend building one segment and testing it
    in the appropriate environment. This will give you an idea of what the cost of
    system will be.

    There are contract assembly houses that will build as much of the system as
    you want. You need have your design complete and documented.

    (* jcl *)