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Step 4: Customize and Win

Because I used a breadboard instead of a solid pcb you can simply change the behavior of the LED by changing the components around the NE555. In the default mode it fades in and out. Have a look at the images for some alternative circuits.

The first one is the simplest. Just light.

Picture #2 shows a circuit for a flashing LED. Change the value of C2 and R1 to adjust the speed.

Picture #3 shows 2 alternately flashing LEDs.


Go creative and share your circuits! (Contest)

I would be happy if you made the display and play around with the circuit. If you made your own circuit design, share it in the comments to get a 1 year pro membership. The only restriction: the circuit has to fit on a mini breadboard. Deadline is Jan. 31th 2012. So go creative and win! 
Cool! I might try this (with an ATtiny85).
Its a great idea to use a µC for that. I am very curious about your circuit!
Here is mine. It's kinda lame. I didn't have any orange or yellow LEDs so I made a tree.<br> <br> <div class="media_embed"> <object style="height: 390.0px;width: 640.0px;"><param name="movie" value="http://www.youtube.com/v/pQHQpeSy3Yg?version=3&amp;feature=player_detailpage"><param name="allowFullScreen" value="true"><param name="allowScriptAccess" value="always"><embed allowfullscreen="true" allowscriptaccess="always" height="360" src="http://www.youtube.com/v/pQHQpeSy3Yg?version=3&feature=player_detailpage" type="application/x-shockwave-flash" width="640"></embed></object></div>
Thanks for sharing. Would you also post the circuit and the code for the &micro;C?
Sure!
I will post a few pictures of it in an hour or two.
Very cool entry to the Advent Calendar. <br>A contest within a contest is an original idea too :)
Thank you!

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Bio: I like to play with electronics and other fun stuff, modify things to make them more useful or just more funny, putting things together that ... More »
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