#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#define TRIGGER_PIN1 9
#define ECHO_PIN1 10
#define TRIGGER_PIN2 11
#define ECHO_PIN2 12
#define LCD_ADDRESS 0x27
LiquidCrystal_I2C lcd(LCD_ADDRESS, 16, 2);
int personCount = 0;
void setup() {
Serial.begin(9600);
lcd.init();
lcd.backlight();
pinMode(TRIGGER_PIN1, OUTPUT);
pinMode(ECHO_PIN1, INPUT);
pinMode(TRIGGER_PIN2, OUTPUT);
pinMode(ECHO_PIN2, INPUT);
}
void loop() {
int distance1 = getDistance(TRIGGER_PIN1, ECHO_PIN1);
int distance2 = getDistance(TRIGGER_PIN2, ECHO_PIN2);
if (distance1 < 100 && distance2 > 100) {
personCount++;
lcd.clear();
lcd.print("Odadaki Kişi ");
lcd.print(personCount);
delay(500);
} else if (distance1 > 100 && distance2 < 100) {
personCount--;
lcd.clear();
lcd.print("Odadaki Kişi ");
lcd.print(personCount);
delay(500);
}
delay(500);
}
int getDistance(int triggerPin, int echoPin) {
digitalWrite(triggerPin, LOW);
delayMicroseconds(2);
digitalWrite(triggerPin, HIGH);
delayMicroseconds(10);
digitalWrite(triggerPin, LOW);
long duration = pulseIn(echoPin, HIGH);
int distance = duration * 0.034 / 2;
return distance;
}