#include <Wire.h>
#include <LiquidCrystal.h>

const int trigPin = 9;
const int echoPin =10;
const int ledPin = 13;
LiquidCrystal_12C lcd(0x27, 16, 2);

void setup() {
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(ledPin, OUTPUT);
  lcd.init();
  lcd.backlight();
  Serial.begin(9600);

}

void loop() {
  // Read ultrasonic sensor distance
    long duration = pulseIn(echoPin, HIGH);
    float distance = duration * 0.034 / 2;
    // Check if object is within 10cm range
      if (distance <= 10) {
          // Turn on LED
              digitalWrite(ledPin, HIGH);
              

}