Other Arduino Codes and Videos by Robojax

DS1307 Real Time Alarm Clock Module Turn AC bulb

DS1307 Real Time Alarm Clock Module Turn AC bulb

This video explains how to use DS1307 Rreal Time Clock Module with Arduino. This code will turns AC bulb ON or OFF according to Alarm settings.
  1. Real Time clock library (from Robojax.com)
  2. Real Time clock library (from Gethub)
  3. DS1307 Introduction page with video and Library
  4. DS1307 Datasheet (pdf)
  5. Get Schematic diagram for this sketch Course on Udemy
  6. Patreon Account

 /*
 * Alarm Sketch for DS1307 Real time clock module 
 * To turn ON or OFF AC or DC load
 * 
 * Code Written/modefied by Ahmad Shamshiri on Jun 15, 2019
 * in Ajax, Ontario, Canada @ www.Robojax.com
 Watch video instruction for this video: https://youtu.be/ykgXKUuvtbE
 * 
 * 
 * for library of this code visit http://robojax.com/
 * Original library from https://github.com/adafruit/RTClib
 */
//DateTime (uint16_t year, uint8_t month, uint8_t day, uint8_t hour, uint8_t min, uint8_t sec)

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

#define alarmPin 2

const int alarm[]={2019,6,14,22,17,0};
const int waitTime =4000;


RTC_DS1307 rtc;


void setup () {
  pinMode(alarmPin,OUTPUT);//set pin 2 as output
 
  while (!Serial); // for Leonardo/Micro/Zero

  Serial.begin(9600);
  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  if (! rtc.isrunning()) {
    Serial.println("RTC is NOT running!");
    // following line sets the RTC to the date & time this sketch was compiled
    // rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
    // This line sets the RTC with an explicit date & time, for example to set
    // January 21, 2014 at 3am you would call:
     //rtc.adjust(DateTime(2019, 3, 3, 20, 0, 0));
  }
  //rtc.adjust(DateTime(2019, 3, 3, 20, 0, 0));
   //rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
}

void loop () {
    DateTime robojax = rtc.now();
    Serial.print("Alarm: ");
    for(int i=0;i<6;i++){
      Serial.print(alarm[i]);
      if(i !=5){
        Serial.print("-");
      }
    }
    Serial.println();
    Serial.print("Time:  ");
    Serial.print(robojax.year(), DEC);
    Serial.print("-");
    Serial.print(robojax.month(), DEC);
    Serial.print("-");
    Serial.print(robojax.day(), DEC);
    Serial.print("-");    
    Serial.print(robojax.hour(), DEC);
    Serial.print("-");
    Serial.print(robojax.minute(), DEC);
    Serial.print("-");
    Serial.print(robojax.second(), DEC);
    Serial.println();
 
   if(checkAlarm(robojax)){
    digitalWrite(alarmPin, HIGH);// 
    Serial.print("Alarm Triggered");
    delay(waitTime);
    //while (1);// wait for ever 
   }else{
    digitalWrite(alarmPin, LOW);//
   }
    Serial.println();
    delay(500);
}

/*
 * 
 * @brief returns true if alarm array matches the current time
 * @param timeNow, is the object for RTC clock
 * @return true if alarm values matches current time
 * Written by Ahmad Shamshiri for Robojax.com 
 * on Friday Jun 14th, 2019 at 20:28 in Ajax, Ontatio, Canada
 * 
 */

boolean checkAlarm(DateTime timeNow){

  if(
   alarm[0] ==timeNow.year()
   &&
   alarm[1] ==timeNow.month()
   &&
   alarm[2] ==timeNow.day()
   &&
   alarm[3] ==timeNow.hour()
   &&
   alarm[4] ==timeNow.minute()
   &&
   alarm[5] ==timeNow.second()
   ){
      return true;
   }else{
      return false;
     
   }
  
}//checkAlarm




   

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