try
Attempts to get the end-to-end time for this servo (only available on ServoEx).
Return
the rescaled servo end-to-end time if available, else EPSILON_MS.
Parameters
servo
the servo to get the time for (rescaling parameters are ignored if this is not a ServoEx)
from
the rescaling lower limit where the servo is currently
to
the rescaling upper limit where the servo should go to