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traffic light project

Discussion in 'LEDs and Optoelectronics' started by MattCAnderson, Apr 22, 2013.

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  1. MattCAnderson

    MattCAnderson

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    0
    Apr 22, 2013
    Hi Electronics Forum,

    I breadboarded a 3 stage ring counter using D flip flops. I want to initialize the 7474 chips so that one stage is high and the other two are low. I tried to use a resistor and a capictor. Is there an easy way I can modify my circuit so that it will work? All three of the lights turned on, instead of red then green then yellow, as desired.

    Thanks,
    Matt
     

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  2. BobK

    BobK

    7,682
    1,688
    Jan 5, 2010
    A 4017 is a good choice for making traffic lights. You can find lot's of designs on line.

    Bob
     
  3. MattCAnderson

    MattCAnderson

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    0
    Apr 22, 2013
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