zoomkat:
You can make a seup like below using a bamboo skewer so you can detect incremental movements of the servo. I found that a standard servo is capable of ~426 discrete movements in its ~190 deg rotation range. Servos have an internal dead band which can limit resolution. I found that ~5us is pretty mich the lower us resolution limit.
zoomkat, is there a way to know this beforehand? Is there a way to increase servo resolution?