buzzer
— 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¶
- buzzer.freq(freq)¶
Sets the buzzer frequency independently of the volume.
freq
any frequency to drive the buzzer at.
- buzzer.duty(duty)¶
Sets the buzzer duty cycle independently of the frequency.
duty
any PWM duty cycle percentage (0-255 for 0-100%).
Constants¶
- buzzer.RESONANT_FREQ¶
Constant definting the highest volume frequency of the buzzer (typically 4000 Hz).