Hi all....please let me know if i am in the wrong forum....hope you guys can help me out

I am building a space craft and wanted to add a couple of led lights to it. Its a simple circuit connecting the led lights to 2 AA batteries. I need help on how to make the led blink with an interval like those on commercial airline...

Thanks in advance

engineer and electrician different mah....
hey bro thanks ...hope this things can get at jalan pudu

need help guys....

I am not very technical in this....so here goes---- in a circuit how do I lower the 5V output to a 3V input..I am trying to use the USB from a PC which I was told is 5V, to light up few LEDs....I think the LED is 3V .

I was told to use a resistor to bring down the voltage. Any particular resistor if I were to ask at Jalan Pasar?

Thanks.

thanks a lot for the info.. ..best to buy a few to try I guess....