code: def set_pulse_width_range(self, min_pulse=750, max_pulse=2250):
          
          self._min_duty = int((min_pulse * self._pwm_out.frequency) / 1000000 * 0xffff)
          max_duty = (max_pulse * self._pwm_out.frequency) / 1000000 * 0xffff
          self._duty_range = int(max_duty - self._min_duty)
docs: Change min and max pulse widths.