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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 4 LED Seven Segment Clock. This code is to build and Actual Digital Clock using DS1207. We used HT16K33 4 digit seven segment display to display time.
/*
* Lesson 105-1: Building Clock using DS1307 | Robojax Arduino Step By Step Course
This code: Project 4: LED Seven Segment Clock using DS1307
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/
*
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
Written by Ahmad Shamshiri on Feb 07, 2021
* * 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/>.
DS1307: RTCLib from Adafruit
https://github.com/adafruit/RTClib/
HT16k33 library
// AUTHOR: Rob Tillaart
// VERSION: 0.1.0
// PURPOSE: demo
// URL: http://www.adafruit.com/products/1002
// URL: https://github.com/RobTillaart/HT16K33
*/
#include <Wire.h>
#include "RTClib.h"
RTC_DS1307 rtc;
#include "HT16K33.h"
HT16K33 seg(0x70);//initialize the display with 0x70 I2C address
//watch video for settings details and demo https://youtu.be/JUcskPLro4U
bool showSecond = false;//show or hide seconds. set to false to not show
unsigned int secondDisplayEvery=5000;//show seconds every 10 seconds
unsigned int secondBlinkCount=6;//show 3 blinks of second
unsigned int secondDisplayDuration =5000;//for how long seconds should be shown (in milliseonds)
bool showLeadingZero =false;
bool showSecondNoBlink=true;//just count senconds no blink
unsigned long rememberTime = millis();
void showSeconds1();
void showSeconds2();
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!");
}
Serial.println("Robojax Digitla Clock");
Serial.println("using DS1307 and HT16K33");
// 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, 8, 1, 0));
rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
//settings for seven sigment display
seg.begin();
Wire.setClock(100000);
seg.displayOn();
seg.setDigits(4);
seg.displayTest(1);
seg.displayOff();
delay(50);
seg.displayOn();
seg.brightness(10);//set brightness from 1-15
}
void loop () {
(showLeadingZero)? seg.setDigits(4) : seg.setDigits(3);
DateTime now = rtc.now();
//printTime();//print time on serial monitor
seg.displayTime(now.hour(),now.minute());
seg.displayColon(1);
delay(500);
seg.displayColon(0);
delay(500);
(showSecondNoBlink)? showSeconds2() : showSeconds1();
}//loop end
/*
*
* @brief shows seconds on HT16K33 display
* with blinking
* @param none
* @return no return value
* written Feb 06, 2021 by Ahmad Shamshiri
* www.robojax.com
*/
void showSeconds1()
{
int count = secondBlinkCount;
if(showSecond){
if(millis() - rememberTime > secondDisplayEvery)
{
while(count>=0)
{
DateTime now = rtc.now();
count -=1;
seg.setDigits(2);
seg.displayInt(now.second());
delay(500);
seg.displayOff();
delay(500);
seg.displayOn();
rememberTime = millis() ;
}// while end
}//if
}//if showSecond is true
}//showSecond() end
/*
*
* @brief shows seconds on HT16K33 display
* without blinking.
* @param none
* @return no return value
* written Feb 06, 2021 by Ahmad Shamshiri
* www.robojax.com
*/
void showSeconds2()
{
int count = secondDisplayDuration;
if(showSecond){
if(millis() - rememberTime > secondDisplayEvery)
{
while(count>=0)
{
DateTime now = rtc.now();
count -=50;
seg.setDigits(2);
seg.displayInt(now.second());
delay(50);
rememberTime = millis() ;
}// while end
}//if
}//if showSecond is true
}//showSeconds2() end
/*
*
* @brief prints time on serial monitor
* @param none
* @return no return value
* written Feb 06, 2021 by Ahmad Shamshiri
* www.robojax.com
*/
void printTime()
{
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(") ");
Serial.print(now.hour(), DEC);
Serial.print(':');
Serial.print(now.minute(), DEC);
Serial.print(':');
Serial.print(now.second(), DEC);
Serial.println();
}//printTime() end
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