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          Here is an easy and fun project for the holidays that you can show non-electronic enthusiasts friends without them saying: "I have no idea what you were talking about..."




Step 1:


===Needed Items===

~Breadboard
~Power supply

                 (preferably 5v but anything from 4 volts to12 volts will work)
~2 Red and 2 Green LEDs
~555 timer IC

                  (IC stands for Integrated Circuit)
~3 NPN transistors
~5 resistors:  3 x 10kOhm, 1 x 3.3kOmh, 1 x 100 Ohm

                   (10KOhm = Brown Black Orange,
                    3.3KOhm = Orange Orange Red,
                    100 Ohm = Brown Black Brown)
~47uf capacitor
                    (You can use and capacitance you choose, but 47uf seems to work the best)
~various small wires
                    (single-core/solid-core wires are the best)

===With all of these components, you are ready to build!===

Step 2:

Here Is the Schematic of the Christmas LED Flasher! From here you can use this schematic to build the easy and fun Christmas LED flasher!

Step 3: Done!

                                                          ===You're Done!===

          Now you have your working Christmas LED flasher for the holidays to show off to your friends and family! Thanks for reading my instructable! Leave a Comment!

===Be sure to check out my other Instructables and subscribe if you liked this tutorial!===
<p>hi. i was just thinking if your schematic diagram matched the picture above? thank you :D</p>
<p>It should be.</p>
what are the value of 3 NPN TRANSISTORS sir rtty21
I don't know. you can use most any npn transistor, though.
is there an equivalent for the 555 timer ic???
not really. In order to build this circuit, you need to have a 555 timer. try looking at MOUSER.com for electronics parts. That is where I buy the vast majority of mine. here is one I bought on mouser:<br> <a href="http://www.mouser.com/Search/ProductDetail.aspx?R=ICM7555CN%2f01%2c112virtualkey66800000virtualkey771-ICM7555CN%2f01">http://www.mouser.com/Search/ProductDetail.aspx?R=ICM7555CN%2f01%2c112virtualkey66800000virtualkey771-ICM7555CN%2f01</a>
that site is a bit expensive... to ship it to Holland, it is 20 euros. that is a bit too much for a 555 timer wich costs 34 cents. I'll look for something less expensive. <br><br>thanks for your help<br><br>LukeD
Ouch. That's too bad.<br><br>If you want to make an oscillator and skip the 555 altogether, search &quot;transistor oscillator&quot; on google and see what you find.
if you make this circuit: <br><br>http://www.eleccircuit.com/wp-content/uploads/2009/08/simple-tone-oscillator-generator-by-2n2222.jpg<br><br>and change the speaker with a LED, will it flash?
I believe it would.<br><br>keep in mind that the &quot;2N2907&quot; is a PNP transistor while the &quot;2N2222&quot; is a NPN transistor.<br><br>If you have any trouble flashing an LED with this circuit, just give me a PM (private message) and I'll be happy to see what you're up to.<br><br>--rtty
last week I bought a breadboard, if I have it, i'll start experimenting.<br><br>thanks for your help<br><br>-lukeD
no problem at all!
the positive and negative terminals of the capacitor are not given<br>
did you use LM555 timer or NE555 timer
I used an NE555, but they all work the same at low frequencies. If you are looking for high frequency 555s, I would recommend the following:<br>~7555...........(500 KHz Maximum)<br>~TS555........(2 MHz Maximum)
Yes it was a great video and good work. Please keep those dirt cheap electronic gadgets coming. I enjoy helping my child build the exciting fun projects you have.
can i use a 9v battery to power this
yes
do i need a certain something to turn 9v to 5v?
yes. try a 7805. you may find it here:<br><br>http://www.mouser.com/ProductDetail/Exar/SP7805V-L/?qs=sGAEpiMZZMvYvv22R2xfeLQW7ILTepCQgnOVHVVn2p8%3d<br><br>The website that this is on is called mouser.com<br>Mouser is really awesome for electronics enthusiasts because it offers great electronics at great prices. <br><br>I hope this helped you! =D<br>If you have any other questions or comments, I'd love to hear them!

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Bio: I'm an 18 year old Electronics enthusiast. I have completed five semesters of schooling at Minnesota State University in Mankato. I'm pursuing a ... More »
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