1. trackfodder

    trackfodder Member

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    Does anyone have the capacitance and resistance values for on and off times for turn signal flasher IC NE-555 for diode lights? I bought what was SUPPOSED to be a flasher switch and it turned out to be a DPDT switch with both black leads bridged together and red feed to both. STUPID! I was expecting too much for $1.79 with free shipping from China, but since you can buy a working
    calculator made in China from Dollar Tree for $1.00 I took a chance.
     
  2. Agreen

    Agreen Member

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    I punched some numbers in an online 555 calculator and got:

    C1=300uF
    R1=400ohms
    R2=2.2kohms

    You can tinker with the numbers as you want with the calculator. Something I would personally do is use variable resistors and a vari cap. Those numbers will get you about 0.5 sec on, 0.5 sec off.

    http://www.ohmslawcalculator.com/555-astable-calculator
     

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