well, most leds use 20 milliamps. you are using a 470 ohm resistor.

by manipulating the ohm's law equation, you can get:

P = (A^2)xR

so, .02 squared times 470 is .188W. you will have to use the quarter watt resistor(.25). a 1/8 watt resistor would burn up.

^^ :blink:

Thanx Tibby!