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Fading Led (leds) inside computer looking like heart beat. Answered


First of all I want to apologize my English but its not my mothers language.

So what I would like to do is add warm white led (leds) into my computer what would fade out and fade in like really slow pulse. How this could be done.

I can do basic soldering and schematics but the easier the schematic is the better :)
And as cheap as possible because I'm not that rich at the moment.
I have googled this a bit but found so many different versions and also they all faded so fast and I want my led (leds) to fade slowly. And because the idea is to but them to my computer this project would be using either 5 or 12 volt source.

Thanks for all who can help me!


4 Replies

Markomaani (author)2010-08-19

Hi! Thanks for that! Ill give it a try but could there be possible to make the pulse a bit slower? Make

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Adlab (author)Markomaani2010-08-31

Sure, you just have to play around with the resistor values from the 555 Astable equation. You can find it here: http://en.wikipedia.org/wiki/555_timer_IC Sorry I can't be more help at the moment, I've got a pile of work to do :-(

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Adlab (author)2010-07-28

Hey, I've got a circuit that should help you (though you've probably already found a solution by now) http://theadlab.blogspot.com/2009/10/alternate-led-pulsing-via-555-timer.html

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