I'm interested in keeping time accurately (relatively, nothing amazing) but I don't need to actually set/recall the time. I just need to keep a stepper motor rotating at the right speed. I want to use a micro controller for this because its not a simple 1 hour/1 rotation sort of thing, I need to do some calculating to ensure that little errors in difference between steps and time are kept accounted for.
My only time keeping experience has been with the DS1307, and I like it, but I figure I could simplify. Additionally I would like to use an ATTiny85 which I'm afraid my lack of experience will cause problems with using atmega328 libraries and I2C.
Just looking for suggestions for now... Thanks