What is the best slide projector? Slide projectors have been around for well over a century, providing the opportunity to take images and display them on a bigger screen for clearer viewing.

The big slide project at Frontier Park is zipping along once more, with completion set for mid-May. Proof of the progress arrived on Friday, when three 40-foot slides were delivered at Frontier Park.

Here’s a video projector that [Matt] hacked together. He needed a small and inexpensive solution to use with his R2D2 build. As you can see in the video after the break, it has no problem playing back ...