LCD_UltraSens_Ino

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 20, 4);

#define PIN_TRIG 12
#define PIN_ECHO 11

long duration, cm;

void setup() {
  lcd.init();
  lcd.backlight();

  // put your setup code here, to run once:
  Serial.begin(9600);

  pinMode(PIN_TRIG, OUTPUT);
  pinMode(PIN_ECHO, INPUT);
}

void loop() {
  lcd.setCursor(6,0);
  lcd.print("Djarvis");
  lcd.setCursor(0,1);
  lcd.print("distance:");

  // put your main code here, to run repeatedly:
  digitalWrite(PIN_TRIG, LOW);
  delayMicroseconds(5);
  digitalWrite(PIN_TRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(PIN_TRIG, LOW);

  duration = pulseIn(PIN_ECHO, HIGH);

  cm = (duration/2) / 29.1;
  lcd.setCursor(9,1);
  lcd.print(cm);
  delay(400);
  lcd.clear();
}