ten LEDs sequentially flash then stop.

Discussion in 'General Electronics Chat' started by johnal2, Sep 4, 2014.

  1. johnal2

    Thread Starter New Member

    Aug 11, 2014
    27
    0
    Hi all
    I am looking to built a circuit that is when i turn it on then the LED will be sequentially flash it once and then it is stop completely. (other word it is circuit flash just one to ten LEDs sequentially when I turn it on. it will stop until reset or turn the power off then turn it on. It then flash it again one to ten sequentially.)
    Thanks
    Kyle
     
  2. wayneh

    Expert

    Sep 9, 2010
    12,123
    3,047
    Check out Bill's blog for 555 timer IC circuits to drive LEDs. I believe the circuit you want is a "chaser" and will use one 555 as a clock and one 4017 as a counter. Unlike most chaser circuits, you do not want your's to reset. Just count up and stop.
     
  3. johnal2

    Thread Starter New Member

    Aug 11, 2014
    27
    0
    Hi Mr. Wayneh
    Thank! and I will search the net for chaser circuit.
    Kyle
     
  4. crutschow

    Expert

    Mar 14, 2008
    13,009
    3,233
    Do you want all the LEDs off when it stops?
     
  5. wayneh

    Expert

    Sep 9, 2010
    12,123
    3,047
    Leave #10 disconnected. (kidding)
     
  6. johnal2

    Thread Starter New Member

    Aug 11, 2014
    27
    0
    Hi Mr. Crutschow
    Yes. after "on" from one to ten then then it stop until reset or turn off then turn on.
    Thanks
     
  7. crutschow

    Expert

    Mar 14, 2008
    13,009
    3,233
    It's relatively simple to stop with all LEDs off using a 4017 counter for 9 LEDs (as wayneh suggested, even if he was kidding) but requires some extra circuitry for 10 LEDs. So can you do with 9 or do you really need 10?
     
  8. johnal2

    Thread Starter New Member

    Aug 11, 2014
    27
    0
    Mr. Crutchow and Mr. Wayneh
    Thanks and I will try to do this.
    Kyle
     
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