// i download from library this codes  :

#include <RTClib.h>  // for timing

#include <LCD-I2C.h>  // for lcd

#include <Wire.h>      

LCD_I2C lcd(0x27, 16, 2);

RTC_DS3231 rtc;

#include "DFRobotDFPlayerMini.h"   // for mp3 & speaker

// i define the time of maghrib like this

#define MAGHREB_HOUR 17  // Set maghreb hour

#define MAGHREB_MIN 55 // set maghrib min

#define MAGHREB_SEC 0

// i define the time of fajr like this

#define FAJR_HOUR 4  // Set FAJR hour

#define FAJR_MIN 50  // set FAJR min

#define FAJR_SEC 0

// i define the RGB LED COLORS

#define LEDRED_PIN 3

#define LEDGREEN_PIN 5

#define LEDBLUE_PIN 6

#define IR_PIN 7     // IR sensor 

#define BUZZER_PIN 9   // buzzer 

// the following code for mp3

#if (defined(ARDUINO_AVR_UNO) || defined(ESP8266))  // Using a soft serial port

#include <SoftwareSerial.h>

SoftwareSerial softSerial(/*rx =*/10, /*tx =*/11);

#define FPSerial softSerial

#else

#define FPSerial Serial1

#endif

DFRobotDFPlayerMini myDFPlayer;

void printDetail(uint8_t type, int value);

// the following function for decoration lights to use it when needed without repeating every time

  void rgbled() {

  for (int i = 0; i < 30; i++) {  

    digitalWrite(LEDRED_PIN, HIGH);

    delay(500);

    digitalWrite(LEDRED_PIN, LOW);

    delay(500);

    digitalWrite(LEDGREEN_PIN, HIGH);

    delay(500);

    digitalWrite(LEDGREEN_PIN, LOW);

    delay(500);

    digitalWrite(LEDBLUE_PIN, HIGH);

    delay(500);

    digitalWrite(LEDBLUE_PIN, LOW);

    digitalWrite(LEDRED_PIN, HIGH);

    digitalWrite(LEDGREEN_PIN, HIGH);

    digitalWrite(LEDBLUE_PIN, HIGH);

    delay(500);

    digitalWrite(LEDRED_PIN, LOW);

    digitalWrite(LEDGREEN_PIN, LOW);

    digitalWrite(LEDBLUE_PIN, LOW);

}

void setup() {

  // put your setup code here, to run once:

//  i put setup for lcd to start with backlight when the device is ON

then the welcoming message appears "RAMADAN KAREEM"

  Wire.begin(); 

  lcd.begin(&Wire);

  lcd.display();

  lcd.backlight();

  lcd.print("     RAMADAN");  

  lcd.setCursor(5, 1);     // I CHOOSE SPACES 

  lcd.print("KAREEM");

  delay(500);

//  i put setup for buzzer , IR & RGB led

  pinMode(BUZZER_PIN, OUTPUT);

  pinMode(IR_PIN, INPUT);

  pinMode(LEDRED_PIN, OUTPUT);

  pinMode(LEDBLUE_PIN, OUTPUT);

  pinMode(LEDGREEN_PIN, OUTPUT);

  // SPEAKER SETUP START

#if (defined ESP32)

  FPSerial.begin(9600, SERIAL_8N1, /*rx =*/D3, /*tx =*/D2);

#else

  FPSerial.begin(9600);

#endif

  Serial.begin(115200);

  Serial.println();

  Serial.println(F("DFRobot DFPlayer Mini Demo"));

  Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));

  if (!myDFPlayer.begin(FPSerial, /*isACK = */ true, /*doReset = */ true)) {  //Use serial to communicate with mp3.

    Serial.println(F("Unable to begin:"));

    Serial.println(F("1.Please recheck the connection!"));

    Serial.println(F("2.Please insert the SD card!"));

    while (true) {

      delay(0);  // Code to compatible with ESP8266 watch dog.

    }

  }

  Serial.println(F("DFPlayer Mini online."));

  myDFPlayer.volume(30);  //Set volume value. From 0 to 30

  myDFPlayer.play(2);     //Play the 2nd mp3 ramadan song

                          // SPAEKER SETUP END

  // void rgbled();

  // staring lights

  for (int i = 0; i < 10; i++) {

  digitalWrite(LEDRED_PIN, HIGH);

  delay(1000);

  digitalWrite(LEDRED_PIN, LOW);

  delay(1000);

  digitalWrite(LEDGREEN_PIN, HIGH);

  delay(1000);

  digitalWrite(LEDGREEN_PIN, LOW);

  delay(1000);

  digitalWrite(LEDBLUE_PIN, HIGH);

  delay(1000);

  digitalWrite(LEDBLUE_PIN, LOW);

  digitalWrite(LEDRED_PIN, HIGH);

  digitalWrite(LEDGREEN_PIN, HIGH);

  digitalWrite(LEDBLUE_PIN, HIGH);

  delay(1000);

  digitalWrite(LEDRED_PIN, LOW);

  digitalWrite(LEDGREEN_PIN, LOW);

  digitalWrite(LEDBLUE_PIN, LOW);

  Serial.begin(9600);

  // RTC setup 

  if (!rtc.begin()) {

    Serial.println("RTC not found");

    while (true)

      ;

  }

  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));

}

}

void loop() {

// display time on lcd by hours & minuits & seconds in the first line

// the second line is message "ramadan kareem"

  DateTime now = rtc.now();

  lcd.clear();

  lcd.setCursor(0, 0);

  lcd.print("Time: ");

  lcd.print(now.hour());

  lcd.print(':');

  lcd.print(now.minute());

  lcd.print(':');

  lcd.print(now.second());

  lcd.setCursor(0, 1);

  lcd.print("RAMADAN  kareem");

// IR sensor setup

  int reading = digitalRead(IR_PIN);

// if you open the box and the time is between fajr & maghrib you will hear the sound of buzzer and red led will blink

  if ((reading == HIGH) && (FAJR_HOUR <= now.hour() <= MAGHREB_HOUR )){

   && FAJR_MIN <= now.minute() <= MAGHREB_MIN

   && (reading == HIGH)) {

    digitalWrite(BUZZER_PIN, HIGH);  

    digitalWrite(LEDRED_PIN, HIGH);

    delay(500);  // wait for a second

    digitalWrite(BUZZER_PIN, LOW);

    digitalWrite(LEDRED_PIN, LOW);

    delay(500);

  }

 // if you open the box any other time green light will blink and no buzzer is set

  else if  (reading == HIGH) {

 // if i want time more specified

  // else if (FAJR_HOUR >= now.hour() >= 00

  //  && 23 >= now.hour() >= MAGHREB_HOUR

  //   && (reading == HIGH)) {

    digitalWrite(BUZZER_PIN, LOW);  // turn the LED on (HIGH is the voltage level)

    digitalWrite(LEDGREEN_PIN, HIGH);

    delay(500);  // wait for a second

    digitalWrite(LEDGREEN_PIN, LOW);

    delay(500);

  }

// when maghrib time comes , the AZAN sound will be played and decoration lights are ON

  if (now.hour() == MAGHREB_HOUR && now.minute() == MAGHREB_MIN && now.second() == MAGHREB_SEC) {

    static unsigned long timer = millis();

    myDFPlayer.play(1);

    rgbled();

  }

}