#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#define LED 5 

LiquidCrystal_I2C LCD(0x27, 16, 2);
const int pinChannel1 = 0;
const int freq = 1000;
const int resolution = 10;
int value_PWM;

#define TRIG 26
#define ECHO 25

void setup()
 {
  Serial.begin(115200);
 pinMode(26, OUTPUT);
 pinMode(25, OUTPUT);
  LCD.init();
  LCD.backlight();
  LCD.setCursor(0,0);
  LCD.print("Fah");
  LCD.setCursor(0,1);
  LCD.print("399.97");
  ledcAttachPin(LED,pinChannel1);


}

void loop() 
{
   digitalWrite(26, LOW);
  delay(10); // this speeds up the simulation
  digitalWrite(26, HIGH);
  delay(10);
  digitalWrite(26, LOW);
  int Echopulse = pulseIn(25,HIGH);
  float cm = Echopulse / (29.41*2);
  Serial.print(Echopulse);
  Serial.print("microsec or cm =");
  Serial.println(cm);
   delay(100);
  
}