Blinking Leds strip

[Hugo Carradini]

Hello.
I want to start a project but i am a newbie in electronics and need your help. I want to make some signs using acrylic and smd LEDs strip over de edges and i want them to blink and be able to stop the blinking so i need a circuit maybe using a 555. Something simple to star with . I will be using one foot strip that consumes 100 ma and 12 volts and they have the resistors integrated and in the near future y will use strips that consumes 400ma.
I know this is a simple project for all those interesting projects around the forum but i would appreciate if some one could help me.
Thanks

 

[Hero999]

Yes, use an astable 555 timer, the circuit is on the datasheet which can be .be found using Google.

You'll need a transistor to power the LEDs.

Draw up a circuit and I'll check it if you're not sure it's right.

 

[Hugo Carradini]

Thanks Hero999. I am trying to understand the different circuits all over the net but the are all for one or two LEDs mostly and i don't know how to modified them for more current and on off control. ( sorry to look so dum but electronics can be very confusing at the beginning )Maybe you or some one can help me drawing the circuit , and i know there are few guys looking for something similar that can be very useful. I don't want to look like a lazy person so please don't mis understand me.
Sorry for my English but is not my native language.

 

[Hero999]

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As the lamp is only 400mA you can replace T1 with a smaller transistor, such as the the BC338.

 

[Hugo Carradini]

Thanks Hero999.
This is a great start for me. I will start playing and inform off my results and send some pictures.