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I havent measured the framerate and honestly don't know how. It may be trivial, but this is my first venture into RaspberryPi and so I have no background in the software and hardware. What I can say right now is that using libcamera preview, the image has a noticeable lag, and normal human...

Great work as always, farbe2. Just when I think my machining skills are improving, you come along and show off again. I'm curious about your treatment of the prisms. Did you grind and then re-polish one of the optical surfaces? I don't see how you could achieve that size without doing so.

Some of you may know that Les Wright developed software for a RaspberryPi spectrometer. I've just completed building and calibrating mine. I'm very happy with this project and thankful for Les' great work. Build Summary: I used PySpectrometer 2 software to build a visible light and...

Nice. What was originally in that CNI pen? I always liked those. It's even rarer to see the keylock tailcap switch. What lens are you using with this one?

The AMC 7135 drivers will work but they must be wired in parallel to increase current and keep voltage the same. These regulators get hot, so they should be attached to a heatsink. They also have a relatively high voltage sag, so your power supply should be able to compensate for the drop in...

It's better that the reflection is directed away from the laser aperture. Reflecting a beam back onto the diode can damage it. ND filters are not ideal for high power lasers. The beam, unless it's expanded first, is intense enough that it can damage the thin coating, diminishing the effect of...

I received the package today. The modules are of good quality and operate as expected. I'll share the results once I have a moment to properly test them. I also received a gift which I'll review in a separate thread.

This is true, however there is a huge difference in technical difficulty between conventional film photography and Lippmann photography. More importantly, the question isn't "can film accurately reproduce the color of visible light?" Rather, it's "can film differentiate yellow and green lasers?"...

Thank you. I'll look forward to receiving it.

Good to know. Based on what I've seen here and on eBay, I figured it was going to be a straight transaction. We'll see what unfolds from here.

Years ago I had a few CNI lasers. One was 532 nm and the build was similar to the Laserglow Aries. It was rated for 400 mW and produced over 800 mW peak and averaged 600 - 700 mW depending on ambient temperature. It's been a long time, so I don't remember exactly but from a cold start at room...

@tinkertavernco I hope you see this and can make it right in a reasonable time. Timeline: December 17: I place an order with tinkertavernco for 2 573 nm modules. I purchase promptly via PayPal as requested. tinkertavernco kindly offered a small discount for the purchase and even offered to...

I've had the same thought about whether film would be better at capturing the green and yellow spectrum but it's a hassle to develop film these days so I haven't followed through. I suspect it will be dependent on the particular film composition and it will take some research and/or trial and...

Forced air is the easiest and most economical solution. It should be pretty simple to integrate a small fan into a design and it would use much less power than a peltier device (which would need a fan anyway). A big heatsink that is properly thermally coupled to the laser module is necessary...

That's one hell of a laser. That beam is incredible - it makes the diode look like sh*t.

Thanks for looking at my latest creation. When the 593 nm modules became available, I snagged a few, immediately put one in a chrome pen, and inspected the modules to assess their potential. I noticed that the collimator is plastic, which makes it a static dust magnet and is easily scratched...

If you have the budget, Laserglow still does business. For 500 mW you will have to look to their gigantic Hercules series. The 532 nm diode is nice. I'm currently working on a beam correction module for one of these diodes but it will be a little while before I will have time to finish and...

I think you answered your own question. If someone wants a "cool laser" for $10, why would they want it to be invisible? Building an 808 nm laser pointer is trivial and even very powerful 808 nm diodes can be purchased very inexpensively, if that's something you're interested in. I wouldn't...

Good work. I love to see DIY builds, especially when they're a little wonky. That diode is a really nice one: good choice. What do you want for your next build?

Welcome! It's nice to have some other enthusiastic collectors around, especially those that remember the "golden years." Times have changed but so has laser tech.