I am building a project in which I am using esp32 (please excuse if this forum does not deal with esp). I have the need to power a simple peizzo buzzer from it.
If I power the buzzer with 3.3v it is not very audible. So I need 9v for clarity. Esp digital pin will only output 3.3v.
Can I use a dc to dc step up converter for this ? I understand peizzo buzzers don't really use lot of current. Am I right to use a step up here then?