noTone()

Descrição

Interrompe a geração de uma onda quadrada iniciada pela função tone(). Não tem nenhum efeito se nenhum tom está sendo gerado.

Sintaxe

noTone(pino)

Parâmetros

  • pino: o pino do Arduino no qual se quer parar de gerar um tom.

Retorna

Nada

Código de Exemplo

Let's to play "Jingle Bells" song with Arduino.

Hardware Required

1×Arduino UNO or Genuino UNO
1×3-24V Active Piezo Buzzer
1×Active Piezo Buzzer Module
1×Passive Piezo Buzzer Module
1×Breadboard
1×Jumper Wires
1×(Recommended) Screw Terminal Block Shield for Arduino Uno
1×(Recommended) Breadboard Shield For Arduino Uno
1×(Recommended) Enclosure For Arduino Uno
Please note: These are Amazon affiliate links. If you buy the components through these links, We will get a commission at no extra cost to you. We appreciate it.

Wiring Diagram

Arduino Piezo Buzzer Wiring Diagram

This image is created using Fritzing. Click to enlarge image

Arduino Code

/* * Created by ArduinoGetStarted.com * * This example code is in the public domain * * Tutorial page: https://arduinogetstarted.com/pt/reference/notone */ #include "pitches.h" #define BUZZER_PIN 8 // The Arduino pin connected to the buzzer // notes in the melody: int melody[] = { NOTE_E5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_G5, NOTE_C5, NOTE_D5, NOTE_E5, NOTE_F5, NOTE_F5, NOTE_F5, NOTE_F5, NOTE_F5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_E5, NOTE_D5, NOTE_D5, NOTE_E5, NOTE_D5, NOTE_G5 }; // note durations: 4 = quarter note, 8 = eighth note, etc, also called tempo: int noteDurations[] = { 8, 8, 4, 8, 8, 4, 8, 8, 8, 8, 2, 8, 8, 8, 8, 8, 8, 8, 16, 16, 8, 8, 8, 8, 4, 4 }; void setup() { // iterate over the notes of the melody: int size = sizeof(noteDurations) / sizeof(int); for (int thisNote = 0; thisNote < size; thisNote++) { // to calculate the note duration, take one second divided by the note type. //e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc. int noteDuration = 1000 / noteDurations[thisNote]; tone(BUZZER_PIN, melody[thisNote], noteDuration); // to distinguish the notes, set a minimum time between them. // the note's duration + 30% seems to work well: int pauseBetweenNotes = noteDuration * 1.30; delay(pauseBetweenNotes); // stop the tone playing: noTone(BUZZER_PIN); } } void loop() { // no need to repeat the melody. }

For more detailed instruction, see Arduino - Piezo Buzzer

※ Notas e Advertências:

Se você quiser tocar tons diferentes em múltiplos pinos, você precisa chamar noTone() em um pino antes de chamar tone() no próximo pino.

Ver Também

ARDUINO BUY RECOMMENDATION

Arduino UNO R3
Arduino Starter Kit

※ OUR MESSAGES