#include<LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd (0x27, 16, 2);

void setup()
{
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  pinMode(A0, INPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
}

void kedip(){
  digitalWrite (8, 1);
  digitalWrite (9, 1);
  digitalWrite (10, 1);
  delay (100); 
  digitalWrite (8, 0);
  digitalWrite (9, 0);
  digitalWrite (10, 0);
  delay (100);
}

void loop()
{
  int analog = analogRead(A0);
  int pwm = map (analog, 0, 1023, 0, 100);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Persentase : ");
  lcd.setCursor(0,1);
  lcd.print(pwm); lcd.print("%");
  Serial.print ("Value Analog = ");
  Serial.println (analog);
  Serial.print ("Value PWM = ");
  Serial.println (pwm); 
  delay(250);
  
  if (pwm <= 33){
    digitalWrite (8, 0);
    digitalWrite (9, 0);
    digitalWrite (10, 1);
  }else if (pwm > 33 && pwm <= 66 ){
    digitalWrite (8, 0);
    digitalWrite (9, 1);
    digitalWrite (10, 1);
  }else if (pwm > 66 && pwm <= 99 ){
    digitalWrite (8, 1);
    digitalWrite (9, 1);
    digitalWrite (10, 1);
  }else if (pwm == 100 ){
    kedip();
  }else{
    digitalWrite(8, 0);
    digitalWrite(9, 0);
    digitalWrite(10, 0);
  }
  delay(100);
}