#include <LiquidCrystal.h>

unsigned long T = 0;     
unsigned long L = 0;

 byte pi[8] = {
  0b11111,
  0b10001,
  0b10001,
  0b10001,
  0b10001,
  0b10001,
  0b10001,
  0b00000,};

  byte S[8] = {
  0b11111,
  0b01000,
  0b00100,
  0b00010,
  0b00100,
  0b01000,
  0b11111,
  0b00000,};

LiquidCrystal lcd(7,6,5,4,3,2);

void setup() {
  lcd.begin(16,2); 
  lcd.createChar(0,pi);
  lcd.createChar(1,S);
  pinMode (11, INPUT); 
  pinMode(10, OUTPUT);  
}

void loop() {
            digitalWrite(10, HIGH);                         
            delayMicroseconds(50);                    
            digitalWrite(10, LOW);    
            T = pulseIn(11, HIGH); 
            L = (T*340)/2;                   
            L=L/10000;                        
            
  
    lcd.setCursor(3,0);
    lcd.print("A");
    lcd.write(byte(0));
    lcd.print("O");
    lcd.write(byte(1));
    lcd.print("T");
    lcd.print("A");
    lcd.write(byte(1));
    lcd.print("H");
    lcd.print(":");
    lcd.setCursor(4,1);
    if (L<10){
    lcd.print(" ");
    lcd.print(" ");
    lcd.print(L);}
    else if (L<100){
    lcd.print(" ");
    lcd.print(L);}
    else if (L<1000){
    lcd.print(L);}
    lcd.print(" cm");
    delay(10);
  
}