Yup, should have mentionned that.

Thanks Grendel.

Also, let me give a dirty little secret : Using a 12v power source, if you wire up 4 white LEDs together (3.3v X 4 = 13.2) you'll be short 1.2v from uptimal brightness but that might bring the brighness down "to scale". See ? wow, you just saved yourself 0,09$ worth of resistors !!  You owe me... bing time  ;D ;D ;D

Obviously, this kind of work would need to be tested before by an astro physysist under tight supervision... or by a certified addicted modelist in a semi-ascepticized environnement also know as a mancave  ;D

Cheers