I have a GooDee projector. I suspect it's something fairly new from China and I doubt it has an ir code available.

The other day, I was using my tuner remote and pressed the '0' button. The projector zoomed out. This is not something that the remote can do, but apparently, the projector itself will do it with the right code blasted at it.

Without any ir codes to use, is there a way to figure out what each function might be and program that into a universal remote?