On 1/19/06, brusque@hotpop.com wrote: > still in the same thread: I know it's possible to PWM a laser diode > or a laser diode module (just because I've done that) but how reliable > it would be? There are any tricks to not shorten the diode life? On a previous project, I was pulsing a laser diode at %50 duty cycle between 800 and 1600Hz (frequency depended on exact application). They seemed to work fine and last for years. Bill -- Psst... Hey, you... Buddy... Want a kitten? straycatblues.petfinder.org -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist