How to make SmartThings do what I need it to? Is it even possible?

You may not be able to do it all with Z wave, in particular, the projector input will probably require a different device ( typically Logitech Harmony hub, but there are some other choices as well), but assuming that each individual task can be accomplished through SmartThings, you can, as others have already mentioned, build a “piston” in Core that can trigger them all together. :sunglasses: