I am looking for some guidance. I am a sculptor who is just getting into arduino. I have done lots of kinetic work but all hand geared and basic motor work. I was thinking of making a small sculpture that tracks moment of someone walking in a room. I was thinking of using stepping motors so that it would be smoother than a servo hitting points. I wanted the appearance of it rotating where they moved. A second part to this that I think would be great but I have no idea how to pursue this. Is that when someone comes close enough to the small sculpture it would open up. I know this would involve a IR sensor and a small servo for the opening part but I didnt know if this all was possible...within reason.
I would love to hear your advise on how to get started. I know it is a big step as a project from my little knowledge but I think it would be a great way to learn with clear goals.