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Yeah. Physics class. Did it to enter the local science fair. Set it all up on a 4' x 8' plywood board on sawhorses in my grandmother's basement. LOL. It took me many attempts, but I eventually got 2 decent ones. Mixing all the developing chemicals was fun, too. I still have them, and all the...

Wow! Thread hijack much? LOL. And what's with the language? Sheesh.... It's just trash people! ;) I just sent an email to the Electronics Drop-Off owner asking permission to remove items from their container, but eventually bringing them back for proper recycling. We'll see what they say. I...

I skipped ahead to module 10 (Basic Principles and Applications of Holography), since I made holograms using a HeNe laser over 20 years ago in high school. Awesome information. I love this free e-book!

Has anyone downloaded the Fundamentals of Photonics book yet? I did, and I just got finished reading through the first module. I learned so much in just the first module! I think this free book will be a great resource for noobs like myself, and possibly even you Pro's out there. I found it...

I just came across this site and I thought I'd share with LPF! If this is a repeat somewhere, then I apologize. SPIE is the international society for optics and photonics founded in 1955 to advance light-based technologies. There is a membership required to access some of their info, but...

Dang people!! With words like "antique" and "vintage" you're making me feel so friggin' OLD. I got this multitester when I was in the middle school! :eek: But thank you all for your advice. Despite this unit supposedly measuring currents up to 300mA, it does sound like it's too limited in...

I'm not sure if this place even sells anything we could use, but I came across it last night while searching for laser mounts and holders. It seems that they make a lot of different lab table equipment (holders, etc). They do have a few laser-related things. And the quality, from what I can...

Hi everyone. I have had this multitester ever since I was a kid. I got it from Radio Shack a long time ago (instruction manual is ©1983). I've rarely used it, but I know it still works, since I tested a battery only a month ago with it. It's a Micronta 20,000 ohms/volt folding multitester, Cat...

DISTURBED!!! ('nuff said) Actually, I do like other stuff. Disturbed is simply my favorite, and THE BEST band out there. I also enjoy rock, metal, dance, techno, industrial, electronica, remixes, etc: Godsmack Rammstein Scooter David Guetta ZZ Top Poison Ratt Bon Jovi Madonna DJ...

I have NO idea what any of those titles mean, but I downloaded them anyway! Thank you for sharing.

Well, I answered my own questions by accident just now. LOL. And I see that Iskor12 and I were typing our posts at the same time. Thanks for those tips! Upon trying to cut away some of the glue from the red diode's heat sink (just to make things look a little more presentable, I basically cut...

Oh, yeah! Heat sinks and power! I might need those, too. Thanks!

More progress tonight!!! It took me a little while to gather my nerve, but tonight I took my X-Acto knife to the assembly. I cut the power "cord" near the circuit board, using the X-Acto. This is very easy. For the diodes, I had read somewhere around here that you just have to "work" on the...

Oh, well yeah, I should have clarified that I would make sure it's OK with the owners of the recycling bins if I grabbed some stuff. I know they keep the area under video surveillance, because a year ago when I moved, I had a TON of cardboard to drop off. I was there a while unloading it and...

I had a "potential" realization while driving home tonight. There's a local drop-off recycling center (it's just the dumpsters and bins for recyclables) behind a strip mall here that accepts cardboard, paper, batteries, glass, aluminum... and ELECTRONICS! People can drop any electronics item...

I originally asked the question just to see if anyone here had ever put the two things together before, for any kind of purpose.... But the more I think about it, I guess the only way it makes sense is to use the solar component to recharge the batteries, whether they're small CR123...

You're welcome. So did I, and i'm not even sure what they were talking about! LOL. I'll certainly try! I think it's cool that they're willing to provide this "public service" free of charge, just for the asking. I can't wait until I complete my build!!

Purpose? Must everything have a practical purpose? LOL. Maybe the purpose would be just to see if you could power a laser with the sun via solar panels. Or maybe a laser trip-wire system around the perimeter of your home so you know if someone steps foot on your property? Or maybe a...

In my 2+ years of researching RV's, I have come to find that solar panels are almost a necessity in providing a never-ending supply of power for all the RV systems.... And this got me thinking: Has anyone here used solar power for powering their lasers instead of batteries or the AC outlet...

Well, I'm learning a lot on this forum, and I'm just trying to read as much as I can here. Maybe one of these days I'll be able to post something "expert" on LPF. For now, I'm taking my time with all of this info, and trying my hands at this little DIY project.