Make LED glow slowly?
If you take a look at old Ibook G4 there is a stand-by LED that kind of glows slowly, I wonder what do i have to do to archive it, it would be perfect if it wound go dark completely yet would simply change brightness between say 70 and 100% so should i change voltage accordingly or? if yes then How? and wouldn't it be bad for the LED itself and for the battery, it is also important to mention that i'm going to use one or two AA batteries as a source. please help.