def METHOD_NAME(self, waiting_time):
    """
    This is a function to specify the speed of your step motor. Please handle with care. The shorter
    the waiting time between steps the faster is your step motor (default = 0.0001 sec)
    :param waiting_time: time in sec between 0.0001 and 0.01
    :return:
    """
    self.c.set_waiting_time(waiting_time)