At 12:00 PM 8/4/2004, jon wrote:

>Jason,
>
>The Blue LEDs required more current than the red LEDs. I am not familiar
>with the circuit in the refer LED, but many times there is a current
>limiting resistor. By changing this resistor to a lower value, the blue
>LED will work. Also, some blue (white, etc) LEDs require a slightly higher
>forward voltage, as well.
-----------------

There should be no need to change the current limit resistor. With the
stock resistor, a modern blue LED will be many times brighter than
the green one it replaced. If anything, I wish mine had a little larger
resistor so it wasn't quite so bright.

I think the problem Jason is having stems from the fact that his LED
is infrared, not blue. It's just simply NOT going to put out any visible
light unless you REALLY put a lot of current through it... then it will
put out both light AND smoke...  (-:

Steve
'86 Westy "Escape Pod"
'73 Beetle "ain't got a name yet"