@juliamarie great to see your build and your artistic work. I harvested an 8/Super 8 projector for my first build, so I am intrigued by the last couple of pictures of your intro. You can see what I did, and a lot of information in this thread. Since your last two pictures appear to work out of turning the projector, would gladly share any information that may be helpful with. My background is more electronics, so I struggle a bit with the mechanics, and do not have 3D printing or laser cutting at home, so the work is a bit more of wood-hacking than anything else. But the electronics and arduino programming is much better than my mechanics. I also recover a collection of film negatives, you can read more about it here. Welcome to the forum and glad to provide any additional info that may be helpful.