Arduino Buzzer Music Tutorial (Play Do-Re-Mi with Arduino)
Yo squad! 👋 In this project, we’re gonna make our Arduino sing like a baby piano using a buzzer. Yup, we’re coding some simple notes (Do-Re-Mi-Fa-Sol-La-Si-Do) so your Arduino can vibe with you
Stuff You’ll Need
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1x Arduino UNO
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1x Active Buzzer / Piezo Buzzer 🔊
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Jumper Wires
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USB Cable to connect Arduino to PC
Wiring Guide
Check the wiring on the diagram 👆
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Buzzer (+) → Pin 9 on Arduino
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Buzzer (–) → GND
That’s it. Super simple. EZ clap 👌
The Code
Here’s the full sketch. Copy-paste into Arduino IDE and upload ⬇️
const int buzzerPin = 9; // Pin for the buzzer
// Frequency for each musical note
const int NOTE_C = 261;
const int NOTE_D = 294;
const int NOTE_E = 329;
const int NOTE_F = 349;
const int NOTE_G = 392;
const int NOTE_A = 440;
const int NOTE_B = 493;
const int NOTE_C_HIGH = 523;
void setup() {
pinMode(buzzerPin, OUTPUT); // Set buzzer pin as output
}
void loop() {
playTone(NOTE_C); // Do
playTone(NOTE_D); // Re
playTone(NOTE_E); // Mi
playTone(NOTE_F); // Fa
playTone(NOTE_G); // Sol
playTone(NOTE_A); // La
playTone(NOTE_B); // Si
playTone(NOTE_C_HIGH); // High Do
delay(1000); // Wait before repeating
}
void playTone(int frequency) {
tone(buzzerPin, frequency); // Play note
delay(500); // Hold for 0.5s
noTone(buzzerPin); // Stop sound
delay(100); // Small pause
}
What’s Happening
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The tone() function makes the buzzer produce sound at a given frequency.
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Each frequency corresponds to a musical note 🎶
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We made the Arduino play Do → Re → Mi → Fa → Sol → La → Si → Do in order.
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It’s basically a mini xylophone coded with C++ vibes
Wrap-Up
And boom 💥 now you’ve got yourself an Arduino that sings. You can:
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Change frequencies for different tunes
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Add more delays for rhythm 🥁
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Even try coding full songs (Mario theme anyone? 🎮)
Flex this project to your friends and be like:
“Yeah, my Arduino’s basically a DJ now.” 😏
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