The illusion is based on Pepper's Ghost, a theater effect ... 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 ...

The illusion is based on Pepper's Ghost, a theater effect ... 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 ...

Peppers Ghost is a classic technique ... Our challenge to you is to make a moving hologram Halloween decoration. After all, you can get pico projectors for less than $100 these days, so why ...