#include <Wire.h>          // include the Wire library for I2C communication
#include <RTClib.h>        // include the RTC library

RTC_DS3231 rtc;            // create an RTC_DS3231 object

#define relayPin  2   // define the pin connected to the relay

// Define the times for relay operation
const int onHour1 = 06;
const int onMinute1 = 00;
const int offHour1 = 9;
const int offMinute1 = 00;

const int onHour2 = 11;
const int onMinute2 = 00;
const int offHour2 = 13;
const int offMinute2 = 00;

const int onHour3 = 16;
const int onMinute3 = 00;
const int offHour3 = 18;
const int offMinute3 = 00;

void setup() {
  Wire.begin();            // initialize I2C communication
  Serial.begin(9600);      // initialize serial communication

  // Check if the RTC is running
  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  // Check if the RTC lost power and if so, set the time
  if (rtc.lostPower()) {
    Serial.println("RTC lost power, setting the time...");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }

  pinMode(relayPin, OUTPUT); // set the relay pin as output
}

void loop() {
  DateTime now = rtc.now();  // get the current time

  // Check if it's time to turn on the relay for the first time
  if (now.hour() == onHour1 && now.minute() == onMinute1) {
    digitalWrite(relayPin, HIGH); // turn on the relay
    Serial.println("Relay turned ON - 1");
  }

  // Check if it's time to turn off the relay for the first time
  if (now.hour() == offHour1 && now.minute() == offMinute1) {
    digitalWrite(relayPin, LOW); // turn off the relay
    Serial.println("Relay turned OFF - 1");
  }

  // Check if it's time to turn on the relay for the second time
  if (now.hour() == onHour2 && now.minute() == onMinute2) {
    digitalWrite(relayPin, HIGH); // turn on the relay
    Serial.println("Relay turned ON - 2");
  }

  // Check if it's time to turn off the relay for the second time
  if (now.hour() == offHour2 && now.minute() == offMinute2) {
    digitalWrite(relayPin, LOW); // turn off the relay
    Serial.println("Relay turned OFF - 2");
  }

  // Check if it's time to turn on the relay for the third time
  if (now.hour() == onHour3 && now.minute() == onMinute3) {
    digitalWrite(relayPin, HIGH); // turn on the relay
    Serial.println("Relay turned ON - 3");
  }

  // Check if it's time to turn off the relay for the third time
  if (now.hour() == offHour3 && now.minute() == offMinute3) {
    digitalWrite(relayPin, LOW); // turn off the relay
    Serial.println("Relay turned OFF - 3");
  }

  delay(1000);  // wait for a second before checking again
}