#include <LiquidCrystal_I2C.h>
#define I2c_ADDR 0x27
#define LCD_COLUMNS 20
#define LCD_LINE 2
LiquidCrystal_I2C lcd(I2c_ADDR, LCD_COLUMNS, LCD_LINE);
int sensorsuara = A0;
int pinLED = 3;

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

void loop () {
 lcd.print ("Lampu Menyala");
 digitalWrite (3, HIGH);
 lcd.clear ();
 lcd.print ("Lampu Mati");
 digitalWrite (3,LOW);
 lcd.clear ();
 int sensorValue = digitalRead (sensorsuara);
 if (sensorValue == HIGH) { digitalWrite (pinLED, HIGH);
 }
 else { digitalWrite (pinLED,LOW);
 }
}