Notes

#include <LiquidCrystal_I2C.h>
#include <NewPing.h>
#include <Servo.h>.
LiquidCrystal_I2C lcd(0x27, 16, 2);

#define TRIG_PIN 2
#define ECHO_PIN 3

#define MAX 40

NewPing sonar(TRIG_PIN, ECHO_PIN, MAX);

const int trigPin = 2;
const int echoPin = 3;
const int ledPin1 = 13;
const int ledPin2 = 12;
const int ledPin3 = 11;


long duration;
int distance;
Servo myServo;


void setup() {
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(ledPin1, OUTPUT);
pinMode(ledPin2, OUTPUT);
pinMode(ledPin3, OUTPUT);

Serial.begin(9600);
myServo.attach(9);

lcd.begin(16, 2);
lcd.backlight();
lcd.setCursor(0, 0);
lcd.print("Mesafe: ");

}


void loop() {

int distance = sonar.ping_cm();


lcd.setCursor(0, 1);
if (distance > 0 && distance <= MAX) {
lcd.print(distance);
lcd.print(" cm ");
} else {
lcd.print("GUVENLIK YOGUN");
}

delay(30);


for(int i=15;i<=165;i++){
myServo.write(i);
delay(30);
distance = calculateDistance();

// LCD ekranı her hareket sırasında güncelle
lcd.setCursor(0, 1);
if (distance > 0 && distance <= MAX) {
lcd.print(distance);
lcd.print(" cm ");
} else {
lcd.print("GUVENLIK YOGUN");
}

// LED'leri mesafeye göre yakma
if (distance > 40) { // Uzak mesafe (100cm ve üzeri)
digitalWrite(ledPin1, HIGH); // LED 13 yanar
digitalWrite(ledPin2, LOW);
digitalWrite(ledPin3, LOW);
}
else if (distance > 20) { // Orta mesafe (50cm - 100cm)
digitalWrite(ledPin1, LOW);
digitalWrite(ledPin2, HIGH); // LED 12 yanar
digitalWrite(ledPin3, LOW);
}
else { // Yakın mesafe (50cm ve altı)
digitalWrite(ledPin1, LOW);
digitalWrite(ledPin2, LOW);
digitalWrite(ledPin3, HIGH); // LED 11 yanar
}

Serial.print(i);
Serial.print(",");
Serial.print(distance);
Serial.print(".");
}



for(int i=165;i>15;i--){
myServo.write(i);
delay(30);
distance = calculateDistance();

// LCD ekranı her hareket sırasında güncelle
lcd.setCursor(0, 1);
if (distance > 0 && distance <= MAX) {
lcd.print(distance);
lcd.print(" cm ");
} else {
lcd.print("GUVENLIK YOGUN");
}

// LED'leri mesafeye göre yakma
if (distance > 40) { // Uzak mesafe (100cm ve üzeri)
digitalWrite(ledPin1, HIGH); // LED 13 yanar
digitalWrite(ledPin2, LOW);
digitalWrite(ledPin3, LOW);
}
else if (distance > 20) { // Orta mesafe (50cm - 100cm)
digitalWrite(ledPin1, LOW);
digitalWrite(ledPin2, HIGH); // LED 12 yanar
digitalWrite(ledPin3, LOW);
}
else { // Yakın mesafe (50cm ve altı)
digitalWrite(ledPin1, LOW);
digitalWrite(ledPin2, LOW);
digitalWrite(ledPin3, HIGH); // LED 11 yanar
}

Serial.print(i);
Serial.print(",");
Serial.print(distance);
Serial.print(".");
}
}



int calculateDistance(){

digitalWrite(trigPin, LOW);
delayMicroseconds(2);

digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance= duration*0.034/2;
return distance;

}