#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
#define echoPin 18 // attach pin D2 Arduino to pin Echo of HC-SR04
#define trigPin 5 //attach pin D3 Arduino to pin Trig of HC-SR04
LiquidCrystal_I2C lcd(0x27, 16, 2);
// defines variables
long duration; // variable for the duration of sound wave travel
int distance; // variable for the distance measurement

void setup() {
  pinMode(trigPin, OUTPUT); // Sets the trigPin as an OUTPUT
  pinMode(echoPin, INPUT);// Sets the echoPin as an INPUT
  Serial.begin(115200);
  Wire.begin();
  lcd.begin(16, 2);
  lcd.setCursor(0,0);
  lcd.print(" MONSTERCHIP");
  lcd.setCursor(0,1);
  lcd.print(" badut");
  delay(5000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("  Ultrasonic");
}

void loop() {
  // Clears the trigPin condition
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  // Sets the trigPin HIGH (ACTIVE) for 10 microseconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  // Reads the echoPin, returns the sound wave travel time in microseconds
  duration = pulseIn(echoPin, HIGH);
  // Calculating the distance
  distance = duration * 0.034 / 2; // Speed of sound wave divided by 2 (go and back)
  lcd.setCursor(0,1);
  lcd.print("Distance: ");
  lcd.setCursor(9,1);
  lcd.print(distance);
  lcd.print(" cm ");
}