You probably looked this up because you wanted to know how to make your piezo buzzer more deafening. Or maybe you have a small battery to power your buzzer so the sound is too soft. In this tutorial, I will
Piezo buzzer, generally use as a sensor and actuator which are use to measure force, pressure , tools for positioning object and etc. As for this project, we are going to use it to generate a melody by applying PWM frequency to it.