LED flip flop flasher

Discussion in 'General Electronics Chat' started by klatu, Sep 26, 2010.

  1. klatu

    Thread Starter New Member

    Sep 26, 2010
    1
    0
    I am looking for a circuit to use a dual color LED as an idiot light next to a guage in my car. And I would like the led to flip between the two colors when triggered. I'm planning on a grounding trigger. When car is running , the voltage will be approximately 13.8v to 14.3v and the voltage to the LED's needs to be 1.5 of course , so voltage drop can be included in the circuit if that's easier . Other wise i have used a 470Ω resistor for the voltage difference . I think a flip of about once a second would be about right , but a way to change the flip/flop rate would be fantastic ,maybe a resistance variable to fine tune it .
    My background is in automotive stereo installation and old school auto repair , so i have some knowledge of electronics . Basically i can follow a circuit diagram but not up to designing one .
    Please feel free to ask any questions .
    Thank you for any help with this project , I appreciate it . :D
     
  2. arachne007

    New Member

    Sep 23, 2010
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  3. Jony130

    AAC Fanatic!

    Feb 17, 2009
    3,957
    1,097
    Maybe you can try this circuit
     
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  4. Wendy

    Moderator

    Mar 24, 2008
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