#include <LiquidCrystal.h>
#define pintriger 12
#define pinecho 11
LiquidCrystal lcd (7, 6, 5, 4, 3, 2); // RS,E,D4,D5,D6,D7
float H2,HT,H1; 
long durasi;

void setup() 
{
  Serial.begin (9600);
  pinMode (pintriger, OUTPUT);
  pinMode (pinecho, INPUT);
  lcd.begin(16, 2);
  lcd.print ("Alat Pengukur");
  lcd.setCursor(0, 1);
  lcd.print ("Tinggi Badan");
  delay (500);
  HT=200;
}

void loop() 
{    
  digitalWrite(pintriger, LOW);
  delayMicroseconds(2);
  digitalWrite(pintriger, HIGH);
  delayMicroseconds(10);
  digitalWrite(pintriger, LOW);
  delayMicroseconds(2);
  durasi = pulseIn(pinecho, HIGH);          
  H1 = (durasi * 0.0343)/2;                          
  H2 = HT - H1; 
  lcd.clear();
  lcd.setCursor(2, 0);
  lcd.print("Tinggi Badan");
  lcd.setCursor(4, 1);
  lcd.print(H2); 
  lcd.print(" cm "); 
  delay(500);    
}