Lesson 99: Real-Time Cloick DS3231 to build LCD and LED Clock

Lesson 99: Real-Time Cloick DS3231 to build LCD and LED Clock

Please select other codes for this lecture from the links below.

Part 13: Clock and Timers

This code (99-1) is part of a lesson on using DS3231 Real-Time Clock module with Arduino.Please watch video for full details.

• 00:00 Introduction
• 04:11 DS3231 Datasheet
• 05:07 DS3231 Wiring
• 06:38 Simple DS3231 Clock code and library
• 10:05 DS3231 Code using Alarm
• 14:07 Running DS3231 Clock code demonstration
• 17:49 Alarm Buzzer and LED wiring for DS3231, code and demo
• 22:21 LCD Clock using DS3231
• 23:57 LCD Clock Code for Arduino
• 28:43 Building Unlimited Alarm using DS3231 clock module
• 29:38 Unlimited alarm wiring diagram
• 31:29 DS3231 using Alarm with relay and AC bulb wiring
• 31:59 DS3231 Unlimited Alarm Arduino code
• 34:38 Demonstration of Unlimited Alarm with reset push button
• 35:40 LED Clock using DS3231 and HT16K33
• 38:45 LED Clock code explained
• 50:38 LED Clock Demonstration and settings

 /*
 * Lesson 99: LCD Clock using Arudino and DS3231 RTC module
 * Full video details: https://youtu.be/LEQfzmO9Wm0
 * In this lesson we have the following codes:
 * 1-Basic DS3231 to display on serial monitor
 * 2-Using Larm feature of the DS3231
 * 3-LCD Clock
 * 4-4 Digit LED Clock
 * 5-Unlimited Alarms using DS3231 with reset push button
 * 
 * 
 * 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/
 * 
If you found this tutorial helpful, please support me so I can continue creating 
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/>.

  DS3231: Real-Time Clock. Simple example
  Read more: www.jarzebski.pl/arduino/komponenty/zegar-czasu-rzeczywistego-rtc-ds3231.html
  GIT: https://github.com/jarzebski/Arduino-DS3231
  Web: http://www.jarzebski.pl
  (c) 2014 by Korneliusz Jarzebski
*/

#include <Wire.h>
#include <DS3231.h>

DS3231 clock;
RTCDateTime dt;

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

  // Initialize DS3231
  Serial.println("Initialize DS3231");;
  clock.begin();

  // Set sketch compiling time
  clock.setDateTime(__DATE__, __TIME__);
}

void loop()
{
  dt = clock.getDateTime();

  // For leading zero look to DS3231_dateformat example

  Serial.print("Raw data: ");
  Serial.print(dt.year);   Serial.print("-");
  Serial.print(dt.month);  Serial.print("-");
  Serial.print(dt.day);    Serial.print(" ");
  Serial.print(dt.hour);   Serial.print(":");
  Serial.print(dt.minute); Serial.print(":");
  Serial.print(dt.second); Serial.println("");

  delay(1000);
}