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Exists projector that has opened API?
Sorry, I do not understand the question.
I want to write something like a software that will giving commands to projector what it has to do.
What is a projector? Some piece of hardware to project the video signal? That is just a monitor to an application, so it does not really have an API.
So it will require to add a special electronics?
You'd better ask in some hardware forum....
Yes, I think so.
