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

int analog = A0;
int ledRed = 3;
int ledGreen = 4;
int ledYellow = 5;
int berkedip = 0;

void setup() {
  lcd.init();
  lcd.backlight();
  pinMode(analog, INPUT);  
  pinMode(ledRed, OUTPUT); 
  pinMode(ledGreen, OUTPUT);\
  pinMode(ledYellow, OUTPUT);
}

void loop() {
  lcd.clear();
  int data = analogRead(analog);
  int pwm = map(data, 0,1023,0,100);
  lcd.print(pwm); 
  lcd.print("%");
  

  // Hijau Nyala dari 0%-99%
  digitalWrite(ledGreen, !!pwm);
  // Kuning Nyala dari 34%-99%
  digitalWrite(ledYellow, pwm >= 34);
  // Kuning Nyala dari 67%-99%
  digitalWrite(ledRed, pwm >= 67);

  if(pwm==100){
    // lampu hijau menjadi patokan untuk berkedip
    berkedip=!berkedip;
    digitalWrite(ledGreen, berkedip);
    digitalWrite(ledYellow, berkedip);
    digitalWrite(ledRed, berkedip);
  }
  delay(500);
}