SANAA
UREMBO NA USTAWI
UJANJA
UTAMADUNI NA HISTORIA
BURUDANI
MAZINGIRA
CHAKULA NA VINYWAJI
UHANDISI WA KINYUME
SAYANSI
MICHEZO
TEKNOLOJIA
VAZI
Using a Piezo Buzzer — SIK Circuit 11
Ed

Imeundwa na

Ed

17. Machi 2026FI
99
0
0
0
0

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.

Maagizo

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

Vifaa kwa hatua hii:

SparkFun Inventor's Kit - V3.2SparkFun Inventor's Kit - V3.21 kifaa

Zana zinazohitajika:

Kompyuta yenye IDE ya ArduinoKompyuta yenye IDE ya Arduino
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.

Vifaa kwa hatua hii:

King'ora cha piezoKing'ora cha piezo1 kipande
Bao la MajaribioBao la Majaribio1 kipande
Nyaya za KuunganishaNyaya za Kuunganisha2 vipande
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);
}

Vifaa kwa hatua hii:

Arduino Uno R3Arduino Uno R31 kipande

Zana zinazohitajika:

Kompyuta yenye IDE ya ArduinoKompyuta yenye IDE ya Arduino
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.

Vifaa

5

Zana Zinazohitajika

1
Jumla inayokadiriwa
Kile mtengenezaji alinunua. Malighafi zisizo na bei hupatikana pale unaponunua.
$106.86

CC0 Umma Wote

Mchoro huu umetolewa chini ya CC0. Uko huru kunakili, kubadilisha, kusambaza, na kutumia kazi hii kwa madhumuni yoyote, bila kuomba ruhusa.

Saidia Mtengenezaji kwa kununua bidhaa kupitia Mchoro wao ambapo wanapata Kamisheni ya Mtengenezaji iliyowekwa na Wachuuzi, au unda marudio mapya ya Mchoro huu na uiunganishe kama kiungo katika Mchoro wako kuchangia mapato.

Majadiliano

(0)

Ingia kujiunga na majadiliano

Inapakia maoni...