Police Lights ( red 3 times blue 3 times then repeats )

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4017 pin out

555 pinout


Comments

  1. crysstiJune 1, 2013 at 1:55 PM

    The input voltage is 12V?
    Can I add more LEDs (there are 4 - 2red and 2 blue-right)?
    Can I use 5V from USB for this?
    Thanks. I'm a beginnner but if u help me to do this I will apreciate that.

    ReplyDelete
  2. UnknownJuly 7, 2013 at 8:55 AM

    yes u can add more led's for this every one with separated bc547 branches.see this diagram and manage to create a new branch
    I have not tested this for 5V but it must work with it.If not change all 470Ohm resistors which are directly connected to LED's to 220Ohm.
    You are welcome.and thank u for using my blog

    ReplyDelete

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