#include <Wire.h>>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
const int trigpin = 12;
const int echopin = 14;
long duration;
int distance;
void setup() {
Serial.begin(115200);
lcd.init();
lcd.clear();
lcd.backlight();
pinMode(trigpin, OUTPUT);
pinMode(echopin, INPUT);
}
void loop() {
digitalWrite(trigpin, LOW);
delayMicroseconds(2);
digitalWrite(trigpin, HIGH);
delayMicroseconds(10);
digitalWrite(trigpin, LOW);
duration = pulseIn(echopin, HIGH);
distance = duration * 0.03408/2;
Serial.print(distance);
Serial.println(" cm");
lcd.setCursor(0, 0);
lcd.print("distance : ");
lcd.setCursor(8, 0);
lcd.print(distance);
lcd.setCursor(13, 0);
lcd.print("cm");
delay(500);
lcd.clear();
}