12v sequential tail light help

Discussion in 'The Projects Forum' started by dt250guy, Apr 18, 2015.

  1. dt250guy

    Thread Starter New Member

    Apr 18, 2015
    7
    0
    Hello, I was wondering if anyone could help me, I'm pretty new to this whole electric circuit thing. But I was wondering if anyone could help me with designing a circuit Or possibly design one for me

    000-Brake
    0XX
    X0X
    XX0

    If I can do more leds in order that would be awesome, thanks guys
     
  2. crutschow

    Expert

    Mar 14, 2008
    13,022
    3,236
    So what do the O's and X's represent?
    Typically a 1 represents a true or ON and a 0 represents a false or OFF.

    But this thread will likely be closed since automotive subjects are forbidden here.
     
  3. WBahn

    Moderator

    Mar 31, 2012
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    Is this for a taillight on a car?
     
  4. dt250guy

    Thread Starter New Member

    Apr 18, 2015
    7
    0
    The 0 represents on and x is off, basically I want a sequential flashing led that doesn't light in a row just one at a time

    Kind of like a mustang tail light
     
  5. WBahn

    Moderator

    Mar 31, 2012
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    Again, what is this for? Is this, or are you planning to put this, on a car?
     
  6. dt250guy

    Thread Starter New Member

    Apr 18, 2015
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    0
    No ... Not a car
     
  7. ScottWang

    Moderator

    Aug 23, 2012
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    767
    Maybe you could using a ne555 and a counter as SN74HC390 or SN74HC393 and plus some RC, or using a ne555 and a counter as 74HC390 or 74HC393 and CD4017 and ULN2003 plus some RC.
     
  8. dt250guy

    Thread Starter New Member

    Apr 18, 2015
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    0
    In English? Lol I had a circuit put together at one point on a breadboard and connected it to a 9v and the lights would go individually if I disconnected and connected the positive wire

    I had it set up with a 555 and 4017
     
  9. WBahn

    Moderator

    Mar 31, 2012
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    So what is it you want to end up with. Having a single LED turn on and walk across a string of them is pretty straightforward. But what is this (brake) entry on the first row? You need to describe what you want the system to do, in detail.
     
  10. dt250guy

    Thread Starter New Member

    Apr 18, 2015
    7
    0
    Yes, sorry for the confusion, I basically want a light to walk across a string ... And again I was just trying to use the mustang tail lights as an example ... Everyone has seen how they go in sequential order and yet can all light up at once, but all's I want is for it to walk across a string lol
     
  11. dt250guy

    Thread Starter New Member

    Apr 18, 2015
    7
    0
    100
    010
    001

    Or could you possibly make two light up sequentially .. Ex

    100100
    010010
    001001

    Again I'm pretty new to all this ... Sorry for being a newbster
     
  12. WBahn

    Moderator

    Mar 31, 2012
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    This falls into a common category of circuits known as LED chasers. There are many, many ways to solve the problem and you can learn a lot from playing with them. You can use analog, digital, or mixed-signal circuits. You can use discrete circuits or circuits using programmable logic.
     
  13. ScottWang

    Moderator

    Aug 23, 2012
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    If you mean that 100100 is using 6 leds and to light up two leds in the same time, then it should be using two CD4017 and the second one is divided by the first one maybe three, and then mixing their signals to drive uln2003, and uln2003 to drive 6 LEDs.
     
  14. Søren

    Senior Member

    Sep 2, 2006
    472
    28
    Same circuit, just connect LED 1 to LED 4, LED 2 to LED 5 and LED 3 to LED 6.
     
  15. dt250guy

    Thread Starter New Member

    Apr 18, 2015
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    0
    Is there anyone that can draw this out on a breadboard or anything like that?
     
  16. WBahn

    Moderator

    Mar 31, 2012
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    What is the objective here? Are you trying to learn electronics, or do you have something in mind for this circuit?
     
  17. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,801
    1,105
    Here's one possibility for a '2 on at a time' chaser, assuming a 5V supply.
    LEDChaser.gif
     
  18. ScottWang

    Moderator

    Aug 23, 2012
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    If you just want to using a normal LED chasing light then just google "NE555 CD4017" and you will get a lots infos, the below was showing two LEDs in the chasing light and you could choose the second LED behind the first LED have 2~5 LEDs far away.

    This just an idea and I haven't try it, if you find any errors, please post your questions.

    12v sequential tail light_dt250guy_ScottWang-02.gif
     
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