#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);


void setup() {
  Serial.begin(115200);

  LCD.init();
  LCD.backlight();
  LCD.setCursor(0, 0);
  LCD.print("Distance=");
  LCD.setCursor(14, 0);
  LCD.print("CM");


  }


void loop() {
  long T1=millis();
  long T1_exe=millis()-T1;
  Serial.print("T1exe =  ");
  Serial.println(T1_exe);
  delay(0);
}