An curved arrow pointing right. It's really simple to build a projector for your smartphone to be able to project the same types of holograms seen in Star Wars and other movies. Here's how!

An curved arrow pointing right. It's really simple to build a projector for your smartphone to be able to project the same types of holograms seen in Star Wars and other movies. Here's how!

I also show an easy way that you can build your own image projector using a few common items. This is a great project to learn the basics of how lenses work, and can be used to build your own mini ...