Easy Christmas LED Project! Fun to Build!




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Introduction: Easy Christmas LED Project! Fun to Build!

About: 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 degree in Electrical Engineering. I like Arduino boards, C-pro...

          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===

~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!===



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    hi. i was just thinking if your schematic diagram matched the picture above? thank you :D

    1 reply

    Awesome! I was trying to design something that most everyone can make out of simple and common supplies.

    Thanks for the comment!

    2 replies

    what transistor value you us in in your video?????????????????

    It's NOT My Video,,,Sorry!!!

    I don't know. you can use most any npn transistor, though.

    is there an equivalent for the 555 timer ic???

    7 replies

    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.

    thanks for your help


    Ouch. That's too bad.

    If you want to make an oscillator and skip the 555 altogether, search "transistor oscillator" on google and see what you find.

    if you make this circuit:


    and change the speaker with a LED, will it flash?

    I believe it would.

    keep in mind that the "2N2907" is a PNP transistor while the "2N2222" is a NPN transistor.

    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.


    last week I bought a breadboard, if I have it, i'll start experimenting.

    thanks for your help


    the positive and negative terminals of the capacitor are not given

    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:
    ~7555...........(500 KHz Maximum)
    ~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