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 ...

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!