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How can i build that? (Flasher)

Discussion in 'Datasheets, Manuals or Parts' started by HeX0R, Jan 18, 2008.

  1. Kryten

    Kryten New Member

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    Stavern, Norway
    Well I Norway (my country) its legal to have flashers in Yellow. So im going to make them (i think)
     
  2. amando96

    amando96 Guest

    ONLINE
    If u use this schematic

    Policecartheme.jpg - Image - Photobucket - Video and Image Hosting

    ou will be able to Put one LED on while the other is off and vice versa. i put two Red LED's on while two green LED's are off, so it's kinda fun to try with, i modded this guy's 555 circuit

    Using A 555 Timer Chip

    i played with it for 10 minutes and then i had the new version i made :D my first mod :D

    So try the Using A 555 Timer Chip one and then try mine.

    Good luck ;)

    I actually named this circuit ''police car theme'' LOL
     
    Last edited by a moderator: Jan 19, 2009
  3. audioguru

    audioguru Well-Known Member Most Helpful Member

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    With the supply voltage at the minimum for a 555 (4.5V) then it might stop working when the battery runs down a little.
    The green LEDs will be extremely dim (only 1.1mA). The red LEDs will be dim (only 2.5mA).
     
  4. dave

    Dave New Member

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  5. amando96

    amando96 Guest

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    SNIP*

    they dont look dim at all, I use such high resistence resistors because i'm scared i'll burn the LED's...
    But you can see the light pretty well...
     
  6. audioguru

    audioguru Well-Known Member Most Helpful Member

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    Most LEDs are spec'd at 20mA and have a max allowed continuous current of 30mA or 40mA.
     

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