#include "Arduino.h"
#include <LiquidCrystal.h>
#define IR_DIST_DIGIT_PIN 6
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup()
{
  lcd.begin(16,2);
  Serial.begin(9600);
  pinMode(IR_DIST_DIGIT_PIN,INPUT);
}
void loop()
{
  lcd.clear();
  lcd.setCursor(0, 0); 
  if(digitalRead(IR_DIST_DIGIT_PIN)==LOW)
  {
    lcd.print("Somebody is here.");
  }
  else
  {
    lcd.print("Nobody.");
  }
  delay(500);
}