#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include "RTClib.h"

RTC_DS1307 rtc;

const int alarmHour = 8;   // Set the hour for the alarm
const int alarmMinute = 0; // Set the minute for the alarm



// LCD pin connections
const int lcdCols = 16;
const int lcdRows = 2;
const int lcdAddress = 0x27; // I2C address of your LCD module

LiquidCrystal_I2C lcd(lcdAddress, lcdCols, lcdRows);

const int alarmIntervalHours = 4;

void setup() {
  Serial.begin(9600);
  rtc.begin();

  lcd.begin(lcdCols, lcdRows);
  lcd.backlight();
  lcd.print("Medicine Alarm");
  delay(2000);
  lcd.clear();
}

void loop() {
  DateTime now = rtc.now();

  // Calculate the minutes since midnight
  int minutesSinceMidnight = now.hour() * 60 + now.minute();

  // Check if the current time matches the conditions for the alarm
  if (minutesSinceMidnight % (alarmIntervalHours * 60) == 0) {
    lcd.setCursor(0, 0);
    lcd.print("Time to take");
    lcd.setCursor(0, 1);
    lcd.print("your medicine!");
    digitalWrite(12, HIGH);
    delay(60000); // Wait for a minute to avoid repetitive alarms
    digitalWrite(12, LOW);
    lcd.clear();
    
  }

  // Optional: You can add more functionality or sensors to extend the program
}