motion_sensor.ino

//www.elegoo.com
//2016.12.9

#include "pitches.h"
#include <LiquidCrystal.h>

int ledPin = 6;  // LED on Pin 6 of Arduino
int pirPin = 2; // Input for HC-S501
int buzzer = 5;//the pin of the passive buzzer
int pirValue; // Place to store read PIR Value
int duration = 500;  // 500 miliseconds
int melody[] = {NOTE_B0, NOTE_DS8};
int interruption = 0;

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(7, 8, 9, 10, 11, 12);


void setup() {
  Serial.begin(9600);  
  pinMode(ledPin, OUTPUT);
  pinMode(pirPin, INPUT);
  pinMode(buzzer,OUTPUT);//initialize the buzzer pin as an output
  digitalWrite(ledPin, LOW);

  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
  // Print a message to the LCD.
  lcd.print("Interruptions are: ");      
  
}

void loop() {
  pirValue = digitalRead(pirPin);
  digitalWrite(ledPin, pirValue);      
  Serial.println(pirValue);  
  if(pirValue == 1) {
    tone(buzzer, melody[0], duration);  
    ++interruption;
    lcd.setCursor(0, 1);
    lcd.print((int)interruption);
    delay(6000);
  }
}