Easy Christmas LED Project! Fun to build!

          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!===

Comments

[MROHM]

(removed by author or community request)

[rtty21]

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

Thanks for the comment!
=D

[Sohaib Asif]

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

[MROHM]

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

[kriztopberde]

what are the value of 3 NPN TRANSISTORS sir rtty21

[rtty21]

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

[coleyy]

do i need a certain something to turn 9v to 5v?

[rtty21]

yes. try a 7805. you may find it here:

http://www.mouser.com/ProductDetail/Exar/SP7805V-L/?qs=sGAEpiMZZMvYvv22R2xfeLQW7ILTepCQgnOVHVVn2p8%3d

The website that this is on is called mouser.com
Mouser is really awesome for electronics enthusiasts because it offers great electronics at great prices.

I hope this helped you! =D
If you have any other questions or comments, I'd love to hear them!

[lukeD]

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

[rtty21]

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:
http://www.mouser.com/Search/ProductDetail.aspx?R=ICM7555CN%2f01%2c112virtualkey66800000virtualkey771-ICM7555CN%2f01

[lukeD]

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

LukeD

[rtty21]

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.

[lukeD]

if you make this circuit:

http://www.eleccircuit.com/wp-content/uploads/2009/08/simple-tone-oscillator-generator-by-2n2222.jpg

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

[rtty21]

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.

--rtty

[lukeD]

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

thanks for your help

-lukeD

[rtty21]

no problem at all!

[robot1398]

the positive and negative terminals of the capacitor are not given

[robot1398]

did you use LM555 timer or NE555 timer

[rtty21]

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)

[homeuser5]

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.

[coleyy]

can i use a 9v battery to power this

[MROHM]

(removed by author or community request)

[rtty21]

yes