i want to know how to make a circuit like the one in this video
http://www.youtube.com/watch?v=42R1gYbzscs
i think i know how to do it but idk what the parts are called or where to buy them i think its a relay connected to two capacitors one capacitor to each set of LEDs they charge up then discharge giving the relay power to flash the LEDs and the relay controls the alternation between the two sets of LEDs
so the question is what relay do i buy what capacitors do i buy
please help
thanx