#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL68C_ekwHb"
#define BLYNK_TEMPLATE_NAME "monitoring listrik"
#define BLYNK_AUTH_TOKEN "I8dfXLs2Cmxuc-zEH8myvphQUrFwaZr6"

#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <Wire.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

#define POTENTIOMETER_PIN 34  // Pin connected to the potentiometer wiper

LiquidCrystal_I2C lcd(0x27, 16, 2);  // Alamat I2C umumnya adalah 0x27

char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

int relayPin2 = 5; // Pin yang mengendalikan Relay 2

void setup() {
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass);
  lcd.init();
  lcd.backlight();

  // Inisialisasi pin-pi untuk relay sebagai OUTPUT
  
  pinMode(relayPin2, OUTPUT);

  Blynk.virtualWrite(V0, 0); // Buka tutu pintu air
  Blynk.virtualWrite(V1, 0); //keadaan pintu air

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Selamat Datang!");
  delay(3000);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("AI");
  lcd.setCursor(0, 1);
  lcd.print("2206");
  delay(3000);
}

void loop() {
  Blynk.run();

  int potentiometerValue = analogRead(POTENTIOMETER_PIN);
  float voltage = (float)potentiometerValue / 4095.0 * 100.0;  // Map potentiometer value to voltage range



  delay(500);  // Delay between readings

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("VOLTAGE: " + String(voltage, 2) + " V");

  // Menghidupkan Relay 1 (lampu pemanas) berdasarkan kondisi suhu (voltage)
  if (voltage >2) {
    digitalWrite(relayPin2, HIGH); // Hidupkan Relay 1
    lcd.setCursor(0, 1);
    lcd.print("LAMPU 1 ON");
    Blynk.virtualWrite(V0, String(voltage));
  }
    if (voltage <2) {
    digitalWrite(relayPin2, LOW); // Hidupkan Relay 1
    lcd.setCursor(0, 1);
    lcd.print("LAMPU 1 OFF");
    Blynk.virtualWrite(V0, String(voltage));

  }

}