The Pressure Piano is a three-key piano consisting of the notes G, A, and B that play off of a buzzer when activated. Each key is made of Velostat, aluminum foil, and two jumper wires. While making ...

Figure an Arduino most matches ... for a bare piezo element. The buzzer you bought already has the oscillator and drive circuit in it. You're overthinking this. Note: You can't really use PWM ...