#include <LiquidCrystal_I2C.h>
#include <ESP32Servo.h>
Servo myservo;
LiquidCrystal_I2C LCD(0x27,16,2);

const int trig_Pin=2;
const int echo_Pin=4;

long duration;
int distance;
#define RLED 12
#define GLED 5



void setup()
{
  Serial.begin(9600);
pinMode(trig_Pin, OUTPUT);
pinMode(echo_Pin, INPUT);
pinMode(RLED,OUTPUT);
pinMode(GLED,OUTPUT);
myservo.attach(15);
  LCD.init();
  LCD.backlight();
  LCD.setCursor(0,0);
  LCD.print("ACCIDENT DETECTION");
  LCD.setCursor(0,1);
  LCD.print("ROBOTICS AND AUTOM");
  delay(5000);
  LCD.clear();
}
void loop()
{
digitalWrite(trig_Pin, LOW);
delayMicroseconds(2);
digitalWrite(trig_Pin, HIGH);
delayMicroseconds(10);
digitalWrite(trig_Pin, LOW);

duration=pulseIn(echo_Pin,HIGH);
distance=duration*0.034/2;
Serial.println(distance);

LCD.setCursor(0,0);
LCD.print("ULTRA:");
LCD.setCursor(6,0);
LCD.print(distance);

if(distance < 40)
{
  Serial.println("Break");
  myservo.write(90);
  digitalWrite(RLED, HIGH);
  digitalWrite(GLED, LOW);
LCD.setCursor(0,1);
LCD.print("st:");
LCD.setCursor(3,1);
LCD.print("alert_breacks");

}

else 

{
Serial.println("safe");
myservo.write(0);
digitalWrite(RLED, LOW);
digitalWrite(GLED, HIGH);
LCD.setCursor(0,1);
LCD.print("st:");
LCD.setCursor(3,1);
LCD.print("safe_nobreacks");

}

}