The tag 'piezobuzzer' is only used once. This is the project:
Piezobuzzer
PIezzobuzzer connected to an Arduino Uno
Connect the piezzobuzzer to an Arduino Uno. The black to the GND pin and the red to the A1 pin.
PIezzobuzzer connected to an Arduino Uno
Connect the piezzobuzzer to an Arduino Uno. The black to the GND pin and the red to the A1 pin.