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Any electrical engineer types that can help me out?

Posted by Dan Sleep on November 18, 2012 at 7:42pm in Other stuff - off topic, fun stuff, whatever

I am working on trying to make a set of LEDs flash. Here is what I would like to end up with:

I have a 9V DC powered set of 8 LEDs, which would be normally on, with an On/Off switch.

When the lights are tuned on, and a secondary switch is tripped, the lights will flash for X number of seconds, possibly adjustable duration, but not required,  then go back to solid On.

I have seen some of those 555 chips that seem like they might do what I need them to, I just am not electrically savvy enough to work this out myself.

Anybody got an idea on how I can accomplish this?

Thanks

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Replies

  • BUGGY (C) November 23, 2012 at 12:10pm

    http://www.maplin.co.uk/dual-superbright-redflashing-leds-34161

  • BUGGY (C) November 23, 2012 at 12:07pm

    Try Maplins.co.uk as they have lots of ready made circuits that might give you some directions as to they components used

    I been trying to learn electronics all my life, but as yet havent made a successful circuit board to work.

     

     

     

  • RTZGUITARS November 23, 2012 at 6:42am

    I didnt read the comments but you could run a simple flasher and bypass it with another switch

    so they are always on

     

     

    circuit-flashing-led-schematic.gif

    or do this for a flashing then solid light

    figure_01.gif

     

  • Dan Sleep November 22, 2012 at 7:32am

    I plan on using this module:

    http://www.superbrightleds.com/search/led-products/lsc-100b/

    with this LED strip:

    http://www.superbrightleds.com/moreinfo/top-emitting/wfls-x-bk-seri...

    My thought was to connect the switch to the whole unit, so it turns on and flashes when the switch is tripped, flashes for 5 seconds, then turns off.

    • John Robbie > Dan Sleep November 22, 2012 at 7:45am

      305933646?profile=original

      • John Robbie > John Robbie November 22, 2012 at 7:47am

        the pot controls how long it flashes before it turns off, use a 6v regulator to get the voltage down for the 555 and you can run it all off the one 12 supply

        • John Robbie > John Robbie November 22, 2012 at 8:10am

          305930755?profile=original

          • John Robbie > John Robbie November 22, 2012 at 8:11am

            Hey Dan, might be best to show this past a few other people to check... I'ts late here and I've been building valve stuff for too long, the solid state stuff is a bit rusty! 

            • John Robbie > John Robbie November 22, 2012 at 4:56pm

              Hey Dan,

              I had a look over this with a coffee this morning, you will want to use this one, with the other one I did the momentary switch wouldn't work like you need it to.

              The new circuit will allow you to push the button once to get the lights flashing for up to about 15secs, adjustable down to a couple of seconds via the pot.

              Go with this one. 305932346?profile=RESIZE_1024x1024

              • Dan Sleep > John Robbie November 22, 2012 at 5:42pm

                Thanks!! I will see what I can do with it.

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