2.1A input buck driver, 2x 750mAh 35-70c Lipo batteries, M140 445nm diode, G2 lens. homemade custom heat-sink, turn key safety switch. All jammed into a Nintendo gun. Learn how to build one at NorthStreetLabs.org. Aim it at a plane and Bubba will be glad to have you for a cell mate.
why?
Or, you could just buy one of the many ~2W handheld lasers that aren’t in silly prone-to-melting form factors.
Why not!
DIY fun… or trouble, depending on your opinion of such hobbies.
Personally, this made me nostalgic to playing Hogan’s Alley on the NES as a little kid with my father. I still remember the “new smell” of unwrapping that Nintendo…
Filming lasers is also a fun and exciting way to ruin the CCD in your camera! YEY!
To be perfectly honest….if the specs of that laser are right….It is more terrifying than a loaded gun IMHO.
It could blind an entire crowd of people in seconds.
Not really. Even at ~2W, at any kind of distance, it would require significant, direct exposure to cause permanent loss of vision.
At close range, if you stare at the thing for a minute or two, Mr. Eyeball is going to have a bad day. At 20+ feet, a relatively quick flash across the eyes is unlikely to cause permanent damage.
One of the upsides of a small beam in that context is that it’s pretty hard to keep it focused on a given person’s eyes long enough to cause serious damage.
With a wider beam or more power, that’s a different story, but that’s usually outside the scope of the hobbyist and becomes less and less portable.
But does it generate a rapid nadion effect at higher power settings?
I am not enough of a nerd to understand much of this, but apparently this thing can start a fire. Can it start a fire at long distance? or does it have to be 6″ away like shown in the video?
The beam diverges as the distance increases, and particles in the atmosphere will begin to scatter more of the light. I don’t know the specifics of his build well-enough, but it would likely start a fire at a few feet of distance. 20 feet? Extremely unlikely.
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