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This in this lesson we have 7 projects in one. We learn how use DS1307 Real-Time Clock (RTC) module to build a clock using Arduino.
This is project 1 Basic DS1307 Clock with Arduino where we build a clock which is displayed on the serial monotor of computer.
/*
* Lesson 105-1: Building Clock using DS1307 | Robojax Arduino Step By Step Course
This code: Project 1: Basic DS1307 Clock with Arduino
In this lesson we learn how to use DS1307 Real-time clock module to build Arduino clock. In this lesson we learn about 7 projects.
Project 1: Basic DS1307 Clock with Arduino
Project 2: DS1307 Alarm with Buzzer and Relay
Project 3: DS1307 Alarm with Relay and AC Bulb
Project 4: LED Seven Segment Clock using DS1307
Project 5: Unlimited Alarm with Relay
Project 6: LCD Clock using DS1307
Project 7: LCD Clock with Alarm
* Watch Video instrution for this code:https://youtu.be/gz9xqvRroDY
*
* This code is part of Arduino Step by Step Course which starts here: https://youtu.be/-6qSrDUA5a8
*
* for library of this code visit http://robojax.com/
*
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content like this. Make a donation using PayPal by credit card https://bit.ly/donate-robojax
* * This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.*
* This code has been download from Robojax.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/*
*
* for library of this code visit http://robojax.com/
*
*/
//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"
RTC_DS1307 rtc;
const bool FORMAT_12=false;//if 12 hours set to true, for 24 hours set to false
char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
void setup () {
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(2025, 3, 3, 20, 0, 0));
//rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
}
void loop () {
DateTime now = rtc.now();
Serial.print(now.year(), DEC);
Serial.print('/');
Serial.print(now.month(), DEC);
Serial.print('/');
Serial.print(now.day(), DEC);
Serial.print(" (");
Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
Serial.print(") ");
if(FORMAT_12)
{
Serial.print(now.twelveHour(), DEC);//12 hours format
}else{
Serial.print(now.hour(), DEC);//24 hour format
}
Serial.print(':');
if(now.minute() <10)
Serial.print(0);
Serial.print(now.minute(), DEC);
Serial.print(':');
if(now.second() <10)
Serial.print(0);
Serial.print(now.second(), DEC);
if(FORMAT_12)
{
if(now.isPM())
{
Serial.print("PM");
}else{
Serial.print("AM");
}
}
Serial.println();
delay(3000);
}
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