Arduino Buzzer Melody: Play Notes with tone()

A buzzer turns numbers into sound. Each number is a frequency in hertz. Play the musical scale.

Parts you need

• Arduino Uno
• Piezo buzzer

Wiring

1. Pin 8 → buzzer + leg
2. Buzzer − leg → GND rail

Arduino code

int buzzer = 8;
// Do  Re   Mi   Fa   So   La   Ti   Do
int notes[] = {262, 294, 330, 349, 392, 440, 494, 523};

void setup() {
  for (int i = 0; i < 8; i++) {
    tone(buzzer, notes[i], 300);
    delay(350);
  }
}

void loop() {
}

Goal and tip

Goal: Play at least five different musical notes.

Tip: Try this: play the notes backwards by counting down from 7 to 0.

Run this experiment in the free simulator