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Newbie questions and looking for and affordable analog rgb laser module

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Hey everyone, I'm new to this forum and laser usage. I've been reading up on lasers in the past few weeks for a project I'm working on.

I'd like to find an affordable RGB laser module with analog modulation (not TLL). So that I can fade the lasers from an Arduino.

Would you have any suggestions? I searched a bit on this forum and on ebay but the only Chinese laser modules I found in my budget's price range (100-200$) are all TLL. Are analog modulation lasers more expensive? I also found some boards for analog modulation, could I replace the TTL boards with those?

Also a few questions regarding safety since the laser would be used on stage during an electronic music performance, pointing downward from the ceiling to the stage where I will be.
Ideally I would like to be able to perform on stage without wearing safety goggles but the laser should be bright enough to be seen in a medium size theatre (about 500 seats).
I've read that there a few way to create the audience scanning effect safely: widening the beam, shortening the time that the laser spends in a single point... What would you advise?
Are there any measuring tools that I would be able to use to make sure the beam is not dangerous if caught in my eye?

Maybe there are too many questions in this post! I might split them up into different threads.
 

micheal rosen

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There's no safe way to shine a laser in someone's eyes, so don't do any audience scanning. You can build your own RGB laser module for relatively little (~$150), and I'm sure there are a few here who would gladly help.
 




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