There are many types of buzzer available, one that is powerful and needs external powering and some of them can be powered by 3.3v gpio outputs. It all depends on what your use case is. You need to use PWM library to get your buzzer output. There has been some discussion in this board but i am not sure if there are any working examples lying around.
There are many types of buzzer available, one that is powerful and needs external powering and some of them can be powered by 3.3v gpio outputs. It all depends on what your use case is. You need to use PWM library to get your buzzer output. There has been some discussion in this board but i am not sure if there are any working examples lying around.
