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ok thanks. That fine. It's for night use.. Any brands / models? Can I buy a scanner without the laser and plug my own laser? (could be cheaper)

Hi I'm a newbie in the laser world. I am looking to get a powerful green laser projector that can display messages. Ideally it would be computer controlled so it could generate not only text but also patterns, etc.. The distance of projection is very long (1 mile) I'm not looking for a clean...