Visitor Counter

1#include <LiquidCrystal.h>
2LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
3int  visitors = 0;
4int sensor = 6;
5int sensor1 = 7;
6int buzzer = 8;
7
8
9void  setup() {
10  lcd.begin(16, 2);
11  lcd.print("Visitor counter");
12  lcd.setCursor(0,  1);
13  lcd.print("Visitors:");
14  lcd.setCursor(9,2);
15  lcd.print(visitors);
16}
17
18void  loop() {
19int sensorstate = digitalRead(sensor);
20int sensor1state = digitalRead(sensor1);
21  
22  if(sensorstate == HIGH){
23    digitalWrite(buzzer,HIGH);
24       visitors++;
25    delay(1500);
26    }
27  
28  else if (sensor1state == HIGH) {
29    visitors--;
30    delay(1500);
31    digitalWrite(buzzer,LOW);
32  }
33    lcd.setCursor(9,2);
34  lcd.print(visitors);
35}
36
37
38