Wiring
Check pinout, power supply, common GND and voltage levels before connecting the module.
Full code
const int buzzerPin = 8;
int notes[] = {262, 294, 330, 349, 392, 440, 494, 523};
void setup() {}
void loop() {
for (int i = 0; i < 8; i++) {
tone(buzzerPin, notes[i], 200);
delay(250);
}
noTone(buzzerPin);
delay(1000);
}How it works
This lesson matches the page title and gives a clean starting point for this exact example.
Common mistakes
Check board selection, wiring, libraries, power supply and serial monitor baud rate.