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Using a Piezo Buzzer — SIK Circuit 11
Ed

تخلیق کار

Ed

17. مارچ 2026FI
77
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Using a Piezo Buzzer — SIK Circuit 11

Play a song with a piezo buzzer! Learn about the tone() function, musical frequencies, arrays for storing melodies, and how to create your own tunes.

ہدایات

1

Parts & Introduction

A piezo buzzer converts electrical signals into sound. Using Arduino's built-in tone() function, you can play specific musical frequencies. This sketch plays a simple melody using character arrays for notes and integer arrays for timing.

Parts Needed

  • 1x Arduino Uno + USB cable
  • 1x Breadboard
  • 1x Piezo Buzzer
  • 3x Jumper Wires

Note Frequency Reference

NoteFreq
c262 Hz
d294 Hz
e330 Hz
f349 Hz
g392 Hz
a440 Hz
b494 Hz
C523 Hz

اس مرحلے کے لیے مواد:

SparkFun Inventors Kit - V3.2SparkFun Inventors Kit - V3.21 kit
Arduino Uno R3Arduino Uno R31 piece
BreadboardBreadboard1 piece
Piezo Buzzer1 piece
Jumper WiresJumper Wires2 pieces

درکار اوزار:

Computer with Arduino IDE
2

Hardware Hookup

Wiring Instructions

  1. Place the piezo buzzer in the breadboard. It has two pins — one marked with "+".
  2. Connect the positive pin (+) to Arduino Digital Pin 9 (PWM).
  3. Connect the negative pin to GND.

Tip: If the buzzer doesn't fit easily, try rotating it slightly to align with diagonal breadboard holes.

اس مرحلے کے لیے مواد:

Piezo Buzzer1 piece
BreadboardBreadboard1 piece
Jumper WiresJumper Wires2 pieces
3

Arduino Code

Open the Arduino IDE and upload the following sketch to your Arduino board.

piezo_buzzer.inoarduino
/*
SparkFun Inventor's Kit
Example sketch 11 — BUZZER

Use the buzzer to play a song!

Hardware connections:
  Buzzer positive pin (+) to digital pin 9 (PWM)
  Buzzer negative pin to GND

This code is completely free for any use.
*/

const int buzzerPin = 9;

const int songLength = 18;

char notes[] = "cdfda ag cdfdg gf ";  // space = rest

int beats[] = {1,1,1,1,1,1,4,4,2,1,1,1,1,1,1,4,4,2};

int tempo = 113;

void setup()
{
  pinMode(buzzerPin, OUTPUT);
}

void loop()
{
  int i, duration;

  for (i = 0; i < songLength; i++)
  {
    duration = beats[i] * tempo;

    if (notes[i] == ' ')
    {
      delay(duration);
    }
    else
    {
      tone(buzzerPin, frequency(notes[i]), duration);
      delay(duration);
    }
    delay(tempo/10);
  }

  while(true){}  // Play once, then stop. Remove this line to loop.
}

int frequency(char note)
{
  int i;
  const int numNotes = 8;

  char names[] = { 'c', 'd', 'e', 'f', 'g', 'a', 'b', 'C' };
  int frequencies[] = {262, 294, 330, 349, 392, 440, 494, 523};

  for (i = 0; i < numNotes; i++)
  {
    if (names[i] == note)
    {
      return(frequencies[i]);
    }
  }
  return(0);
}

اس مرحلے کے لیے مواد:

Arduino Uno R3Arduino Uno R31 piece

درکار اوزار:

Computer with Arduino IDE
4

Test & Experiment

What You Should See

You won't see anything — but you'll hear a melody playing from the buzzer! The song plays once and stops.

Troubleshooting

  • No sound: The buzzer pins are easy to misplace on the breadboard. Double-check placement and make sure both pins have good contact.
  • Want it to stop: Pull the buzzer out while working on other things, plug it back in to test.

Experiments to Try

  • Remove the while(true){} line to make the song loop continuously.
  • Write your own melody by changing the notes[] and beats[] arrays.
  • Add more notes by expanding the frequency() function with sharps and flats.
  • Use a button (from Circuit 5) to trigger the melody on demand.

مواد

5

درکار اوزار

1
  • 13
    Computer with Arduino IDE
Estimated Total
$120.00

You can swap these in

Can't get one of the materials? Swap it for an equivalent — these work just as well.

Recommended for this build

Products makers often use with builds like this one.

Resistor 330 Ohm 1/6 Watt PTH - 20 packUsed together and in similar builds
5mm LED Assortment Kit (300pcs, 5 Colors)Used together and in similar builds
Push Button - 33mmUsed together and in similar builds
Basic 16x2 Character LCD - 5VUsed in similar builds
Resistor 10K Ohm 1/6th Watt PTH - 20 packUsed together and in similar builds
PotentiometerUsed together and in similar builds
Servo MotorFrequently used with this build's materials
LED - RGB Diffused Common Cathode - 5mmFrequently used with this build's materials

Related blueprints

Other builds that share materials, tools, or techniques with this one.

Using an LCD — SIK Circuit 15electronics1 shared material
Simon Says — SIK Circuit 16electronics1 shared material
Push Buttons — SIK Circuit 5electronics1 shared material
Using a Flex Sensor — SIK Circuit 9electronics/electromech1 shared material
Using a Shift Register — SIK Circuit 14electronics/active1 shared material
Driving a Servo Motor — SIK Circuit 8electronics/electromech1 shared material

CC0 پبلک ڈومین

یہ بلیو پرنٹ CC0 کے تحت جاری کیا گیا ہے۔ آپ اجازت لیے بغیر اس کام کو نقل، ترمیم، تقسیم اور کسی بھی مقصد کے لیے استعمال کرنے کے لیے آزاد ہیں۔

میکر کی حمایت کریں ان کے بلیو پرنٹ کے ذریعے پروڈکٹس خرید کر جہاں وہ میکر کمیشن وینڈرز کی طرف سے مقرر، کماتے ہیں، یا اس بلیو پرنٹ کی نئی تکرار بنائیں اور آمدنی شیئر کرنے کے لیے اسے اپنے بلیو پرنٹ میں کنکشن کے طور پر شامل کریں۔

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