I do not believe you can easy control intensity with software as it is 
only one bit control (on/off). You could utilize PWM to average current 
and therefore achieve the desired intensity. For that you will need to 
have high resolution timer available and I don't know how good is NetBSD 
with this type of things. You can always run a process at high priority 
to do this but it will just consume the cpu cycles and heat up the qube.
In any event I do not believe that it is worth the effort.

By the way I mount things inside the cube on the fan screws. Just drill 
a hole in your pcb and attach it to the fan screw with a small nut.

Thanks,
Alex


Christopher Schultz wrote:
> All,
> 
> 
>>I was planning on doing this to disable leds at night [...]
> 
> 
> A friend and I rigged a simple photoresistor (available dirt cheap from
> Radio Shack) on mine that would dim the LED on the front when the lights
> weren't on (such as at night, when the LED generated a TON of light). It
> worked pretty well, except that there's no good place to mount anything
> like that on the Qube.
> 
> I would love to hear if anyone has done anything with the LED
> software-wise; especially if anyone knows how to control the intensity
> (=voltate) of the LED with software.
> 
> -chris