In Car Led Scrolling sign net

Discussion in 'Automotive Electronics' started by robbo75, Sep 7, 2015.

  1. robbo75

    Thread Starter New Member

    Sep 7, 2015
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    Evening All,

    I wonder if you can help me?

    I am a motor sports marshall and frequently have to use my car to either fend off or as a warning vehicle.

    I would like to put together an LED net scrolling sign for the rear windscreen. I have seen one online that a chap has put together himself, but there are not really any instructions.

    Do you think this is something that could be put together by a complete novice such as myself? I have pretty much zero experience in electronics!

    thanks in advance for your advice.

    Robin
     
  2. blocco a spirale

    AAC Fanatic!

    Jun 18, 2008
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    A scrolling sign is probably too ambitious as, apart from developing the electronics hardware, you would have to learn to program a micro-controller. If the sign does not need to scroll and you just need to display a very limited number of static messages then it is possible.
     
  3. robbo75

    Thread Starter New Member

    Sep 7, 2015
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    thanks Blocco. i'll have a think about it
     
  4. ScottWang

    Moderator

    Aug 23, 2012
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    If you mean like the video as below then that is a big engineering, but I think you could buy it online:

     
  5. blocco a spirale

    AAC Fanatic!

    Jun 18, 2008
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    Essentially, it's just a case of figuring out what you need and working out the most economical way to display that information by arranging the LEDs on a board. It sounds very low-tech (and it is) but I often see this approach used on LED road signs that are required to display a limited amount of information; perhaps 2 or 3 states. If you need some of them to flash, that should also be achievable for a novice.
     
    Last edited: Sep 7, 2015
  6. ScottWang

    Moderator

    Aug 23, 2012
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    If the leds want to be the sign of direction then it can be use ne555 and cd4107 plus some leds.
     
  7. takao21203

    Distinguished Member

    Apr 28, 2012
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    if you look at independent building blocks its not dificult.

    You could use Arduino and TM1638 LED driver IC

    LEDs you only need to wire them up in a XY matrix.
    There are ready made modules but these have small LEDs only and may not be very bright.
     
  8. robbo75

    Thread Starter New Member

    Sep 7, 2015
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  9. blocco a spirale

    AAC Fanatic!

    Jun 18, 2008
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    Trust me, a scrolling sign like that is not a realistic project for a "complete novice". Even if you can get hold of the plans and the software, putting it all together and making it work will be a considerable challenge.

    But, here's a starting point and a useful exercise; create a block diagram for the system hardware and then produce a flow-chart for a basic single message scrolling algorithm.
     
    Last edited: Sep 9, 2015
  10. gerty

    AAC Fanatic!

    Aug 30, 2007
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    If it's to be used during a race, nobody is going to slow down to read a sign. You'll do well to get them to see warning arrows, at best. Just my $.02...
     
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