Cool, hopefully they can provide one. Until then, perhaps I can help?

Looking at a couple of other st4-enabled drivers on github, it seems there needs to be another driver built specifically for the on-camera guiding. Here are a couple of header files for st4 guiders. The first, asi-st4, might be more useful as it also has a separate ccd driver. They both share a similar format though, in that they provide the same methods. Perhaps we need a sv305-st4.h and corresponding cpp file? I don't yet have the sv305 sdk though, so I'm not sure what those would look like beyond what's already common between the asi-st4 and arduino-st4 drivers.

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