What do you mean by robot? That can really mean anything these days from something that speaks in a mechanical voice to something that puts car doors on to part of the Google wave API. And what sort of hologram do you want to create? Do you have any idea about how they work and what you'd need to do to accomplish it? And what would the robot do to make it? How would it help the process at all?
It sounds like you're asking some very vague questions, that, underneath are rather complicated. Without trying to be rude, the fact you're asking those sorts of questions does make me think you're trying to do something a bit beyond your reach... Have you talked to your tutors or anything about what they think? What were there ideas?