I've looked into it a bit. There are no files on this site (which has thousands of files) for that projector. It's lower-priced than what we usually deal with.
I could come up with the hex codes, but I do this for a living and the first thing I would do is buy a remote and try it out with the projector to be sure it works. I think doing what you want will be more expensive than what you'd want to pay. So, yeah, buy a remote on ebay. Maybe your Galaxy can learn commands!
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw