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Making a Laser Projector from a Hard Drive

| | | | | May 16, 2023

There are many projectors that use a laser diode to display big images. But they generally have a very short range. Ben Makes Everything used a bright green laser to project images that can be seen from a much greater distance. His design relies on an old hard drive to create a persistence of vision illusion and can only display primitive text and numbers.


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