ماژول ایجاد صوت با BUZZER منفعل

				
					/**
  Mini piano for Arduino.
  You can control the colorful buttons with your keyboard:
  After starting the simulation, click anywhere in the diagram to focus it.
  Then press any key between 1 and 8 to play the piano (1 is the lowest note, 8 is the highest).
  By Farhad Nikkhah
  https://www.NikiSite.com
  https://www.nikisite.com/product/nsa-bzf1/
  https://www.nikisite.com/product/nse-pbum/
  https://www.nikisite.com/product/nse-8shl/
*/
//===============================================================================
#include "pitches.h"
#define SPEAKER_PIN 8
const uint8_t buttonPins[] = { 12, 11, 10, 9, 7, 6, 5, 4 };

const int buttonTones[] = {
  NOTE_C4, NOTE_D4, NOTE_E4, NOTE_F4,
  NOTE_G4, NOTE_A4, NOTE_B4, NOTE_C5
};
const int numTones = sizeof(buttonPins) / sizeof(buttonPins[0]);
//===============================================================================
void setup() {
  for (uint8_t i = 0; i < numTones; i++) {
    pinMode(buttonPins[i], INPUT_PULLUP);
  }
  pinMode(SPEAKER_PIN, OUTPUT);
}
//===============================================================================
void loop() {
  int pitch = 0;
  for (uint8_t i = 0; i < numTones; i++) {
    if (digitalRead(buttonPins[i]) == LOW) {
      pitch = buttonTones[i];
    }
  }
  if (pitch) {
    tone(SPEAKER_PIN, pitch);
  } else {
    noTone(SPEAKER_PIN);
  }
}