#include <LiquidCrystal_I2C.h> 


 LiquidCrystal_I2C lcd(0x27, 16, 2); ////ต้องจำ



 void setup() {
 lcd.init();   
 lcd.backlight(); 
 
  pinMode(2, INPUT);
  pinMode(3, OUTPUT);
 

 }


 void loop() { 
   
 digitalWrite(3, HIGH);
 delayMicroseconds(10);
 digitalWrite(3, LOW);

 int d = pulseIn(2,HIGH);
  lcd.setCursor(0,0);
 lcd.print(d); ///
 int cm = d/58;
 lcd.setCursor(0,1);
 lcd.print(cm);

 //digitalWrite(2, HIGH);
 //delayMicroseconds(10);
 //digitalWrite(2, LOW);
 //int t = pulseIn(3,HIGH);
  //lcd.setCursor(0,1);


 //lcd.print(t);







 } ////End loop