Help Request- Adjustable Pulsing LEDs

442 Views 5 Replies 4 Participants Last post by Furball Zen, Apr 17, 2011

mbarr69

Discussion Starter · Apr 4, 2011

Looking to get some help making a simple circuit that will be adjustable and make LEDs pulse/breathe/throb. This is what I would to achive;

[ame]http://www.youtube.com/watch?v=AmLpDx61u5Q[/ame]

This is what I found as far as instructions go;

http://www.moddingtech.de/tutorials/44-li%C2%AD%C2%ADchteffekte/66-led-fader.html

http://www.instructables.com/id/ThrobbingFading-LED-with-555-Timer/

but neither of them include a potentiometer. I am a noob when it comes to electronics so please keep it simple. I'm looking for a parts list and a schematic of the circuit. Any help would be appreciated.

Cheers!

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Volvo

· #2 · Apr 4, 2011

You need a potentiometer in order to control the speed at which the lights blink.

EDIT: Scroll down on the Instructables guide and read one of the comments.

This guy swapped out the cap for a 220uF cap and a 50K variable resistor (AKA potentiometer) to get the lights to blink at adjustable intervals.

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