Recent content by joebob2000

baaaHahahahahhahahahHahaha. Nice photoshop. What does the sign say?

In Huaqiangbei? They probably inspect it, toss it in a discount bin if it's bad, and ship a new one out. I didn't visit Rayfoss' shop, but if they are anything like the rest of that city that is how they operate.

I can't speak for Rayfoss directly but I have been to Huaqiangbei (the area of Shenzhen that the company is allegedly located) and can tell you that the time zone is -8 hours (exactly 12 hours ahead of Eastern Daylight time) and that almost all shops in that area are open 7 days a week since it...

After a bunch of screwing around, making sure the fittings were all tight and the laser lens was securely glued in place, each of the three is almost indistinguishable to the naked eye in terms of the visible beam path and the dot. However, in a very un-scientific test in a 100% dark room to...

I didn't take apart the crystal assembly (one was loose so I turned it til it made a nice point and then glued it in place.) By reassembly I mean the aluminium shell that goes around the laser assembly, and the entire enclosure. I think the fittings just dont conduct well. I noticed on some of...

Here are pictures of the lasers, if anyone is interested! I am curious about the actual laser assemblies; all of the PCBs appear to have the same components on them, but on one of them (one of the two '200mw' units' that usually appears a bit dimmer) has a different design to the brass housing...

Is there any benefit to measuring how much power they draw to operate, like is there a rule of thumb about efficiency I could use to guesstimate the light output? I have a few multimeters and some other DC test equipment, I may try benchmarking that. Is there a way to know the optimal voltage...

Thanks for the suggestion, I may consider it but I dunno if these lasers are worth the bother since they are so cheap. The initial $70 was hard enough to explain to my wife! Also, half the fun of tinkering (for me at least) is designing an experiment and following it through to a measured...

I am a total laser noob so please be kind! I will be reading a bunch more on this site to improve my knowledge, but I thought I would throw a question up to hopefully get some advice. I was recently in China and picked up three green lasers, two marked as 200mw and one marked as 300mw. They...