Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers
How to Register on LPF | LPF Donations
Search results
-
O
Hello from Massachusets!!!
Hello everyone, i found this forum and seems like lots of knowledgeable people here. I would like to build a laser beam “fence” in the back yard that would have the laser beams visible at night, but also when someone crosses the laser beam, it would set off an alarm or a lightbulb. Kind of...