:mod:`buzzer` --- buzzer driver =============================== .. module:: buzzer :synopsis: buzzer driver The ``buzzer`` module is used to control the amplitude and frequency of a buzzer onboard your OpenMV Cam. .. note:: The buzzer (and this module) is not present on all OpenMV Cam models. Functions --------- .. function:: freq(freq) Sets the buzzer frequency independently of the volume. ``freq`` any frequency to drive the buzzer at. .. function:: duty(duty) Sets the buzzer duty cycle independently of the frequency. ``duty`` any PWM duty cycle percentage (0-255 for 0-100%). Constants --------- .. data:: RESONANT_FREQ Constant definting the highest volume frequency of the buzzer (typically 4000 Hz).