buzzer module is used to control the amplitude and frequency of a buzzer onboard your OpenMV Cam.
The buzzer (and this module) is not present on all OpenMV Cam models.
Sets the buzzer frequency independently of the volume.
freqany frequency to drive the buzzer at.
Sets the buzzer duty cycle independently of the frequency.
dutyany PWM duty cycle percentage (0-255 for 0-100%).
Constant definting the highest volume frequency of the buzzer (typically 4000 Hz).