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18 Stage LED counter with variable stages?

Discussion in 'Electronic Basics' started by [email protected], Mar 21, 2006.

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  1. Guest


    I'd like to build Bill Bowdens 18 stage LED sequencer
    (, but
    with a variable number of stages. As far as I understand the circuit,
    i'd suggest this could be acheived in the following way:

    Adding switches to all outputs, connecting all outputs apart from the
    first one of the right 4017 to its reset input so it returns to the
    beginning of the sequence if I choose less stages than 9. And all
    outputs of the left one apart from the first one to the AND gate so the
    sequence starts again at the right 4017.

    Also I guess, I would have to connect pin 3 of the right 4017 to reset
    on the left one to always have the sequence continuing at the right
    point again.

    Do you think this would work?

    Thanks for any help on this one,
    der Warst
  2. Guest

  3. der Warst

    der Warst Guest

    err... I looked at the schematic again... just forget it my question.
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