A couple is about ready to go to bed and call it a night. Then suddenly the husband notices a peculiar photo beside their bed.
Husband: Wow! what a handsome man this guy is! Honey is this one of your friends back in college?
Wife: Oh no, dear that's not one of my friends, that was me before my...
I'm thinking about using a laser to send morsecode a few kilometers as an experiment...
However, my experiance with lasers is mostly by pointing at the projector screen in powerpoint presentations.
So some questions.
What power is needed if it should be just possible to see when the laser is...
recently picked up a cheap china blue laser that runs of two 16340's. it came with a bunch of wierd pattern lenses but i cant figure out why i cant get a regular beam out of it. even just the bare diode is getting me a odd output.
This is with everything removed off the front, bare diode...