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Switch eyes. Cover one and watch it for a while. Cover the other and watch for a while. For me I couldn't get her to switch directions unless I did that.

Vodka1000: that avatar looks familiar. EPCOT?

I wouldn't bother trying. As mentioned already, you wouldn't be able to have it collimated for both at once, you'd have to re-focus each time you switch wavelengths. ALSO, there's a heat issue if you try to run both at once.  

You can download it. search around and you will find it. I had it working on my windows box once. Didn't have a projector, so it just showed up on the screen, but very cool.

What stevetexas and things said. Practice soldering. It's a worthwhile skill. Just practice on some LED's or resistors. Cut the leads really short and solder to those. After that, 'coat' the wires with a little solder at the ends (there should only be 1/16th of an inch of wire showing) and then...

Heh. MI is where I got my first laser. a 2-3 mw red he-ne. I carried it around in my coat with some race-car batteries powering it in my inner pocket. I took it to a theater long before the pointers were out. I didn't do it during the film, but I pointed it in front of people from the balcony...

What the heck is that case from? Also, why bother having the pot. so accessible? I'm assuming you're not adjusting it very often?

Re: Is it possible to make a blue laser beam with To clarify that: Is he not releasing the driver circuit details to anyone, or is it just that nobody is offering kits/built drivers?

the consensus I've seen seems to be not to do it. first and foremost because of heat if you were to use them both at once. but it would also be semi-useless because you'd have to re-focus the lens to infinite each time you switch colors.

I wonder that myself. I bought the first driver circuit on the diodes & drivers page (I can't post a link yet)from meredith instruments and it seemed to work at first, until I realized (too late) I was giving the diode too much voltage. I started off with a weak-ish 9volt that seemed to be doing...

Thank you. My first laugh of the day!