#4.7.2.1. 예제 

#include <Wire.h>

#include <LiquidCrystal_I2C.h>

int TMP36Pin = A0;  

LiquidCrystal_I2C lcd(0x20, 16, 2); 

void setup() {

  Serial.begin(9600);

  lcd.begin(16,2);

  lcd.init();            

  lcd.backlight();       

}

void loop() {

  int rawValue = analogRead(TMP36Pin); 

  float voltage = rawValue * (5.0 / 1023.0);

  float temper = (voltage - 0.5) * 100.0;

  Serial.print("Temperature: ");

  Serial.println(temper);

  lcd.setCursor(0, 0);   

  lcd.print("Temperature: ");

  lcd.setCursor(0, 1);

  lcd.print(temper);

  lcd.print(" C");

  delay(1000);

}