RTC Arsip - calesmart.com

Jul

2017

Juli 18th, 2017 by Catur Budi Waluyo

selamat pagi, blogger, udah lama banget nich blog nya vakum. belum sempat upload artikel- artikel yang sekirannya dapat bermanfaat untuk kita semua. nach pada kesempatan kali ini saya akan membagikan bagaimana cara membuat jam digital yang berbasis arduino nano. kog nano sich emang ada ya? emang teknologi sekarang sudah menuju ke nano ya? Dalam teknologi mikrokontroller,jenis-jenis arduino ada beberapa macam antara lain: arduino uno, arduino mega dan arduino nano. jika ingin mengenal mikrokontroller secara standar ,rekan-rekan blogger bisa memilih arduino uno, karena selain pin nya tidak terlalu banyak juga mempunyai harga yang relatif murah. sedangkan ingin membuat aplikasi menggunakan pin yang lebih banyak bisa memilih arduino mega untuk solusinya.

Nah pada kali ini, saya bagikan karya mahasiswa saya dengan nama kurnianto dan krisna dengan aplikasi rangkaian yang digunakan yaitu menggunakan arduino nano. bagaimana rangkaian, program serta pin yang digunakan? jika rekan-rekan bingung untuk programnya, rekan bloger bisa download programnya dibawah ini dengan gratisss.

Pada aplikasi jam digital ini selain menggunakan mikrokontroller arduino nano juga menggunakan modul DS 1307 yang digunakan sebagai RTC nya. Jam digital merupakan merupakan rangkaian yang bekerja dengan cara asinkron yang berupa pencacah naik. Rangkaian ini dirancang seperti pada umunya sebuah jam yang penunjukkannya memiliki ketelitian terhadap bilangan yaitu detik, menit hingga jam yang memakai system dua puluh empat jam. Untuk tampilan waktu, rangkaian ini akan dilengkapi dengan empat buah penampil dan seven segment atau tujuh buah ruas LED.

Berikut komponen yang digunakan dalam pembuatan jam digital ini.

Dioda Zenner
PCB
Transistor
DS 3017
LED 5MM
Resistor 10k Ohm (1/2 Watt)
CR 2032 + Lithium Cell
Socket 5 V DC
Push Button
7 Segment
IC regulator L7508
Timah
Buzzer

Skematik yang digunakan dalam rangkaian jam digital ini bisa dilihat pada gambar berikut ini.

Sedangkan listing program yang digunakan dalam jam digital sebagai berikut:

4.3 Pemrograman

//    seven segment common anoda
//    Mikrokontroler ATmega328
//    RTC DS1307
//    Seven Segment Common Anoda
//    Beberapa tombol
//    Resistor 560 Ohm
//    Resistor 1k
//    Resistor 10k
//    Capacitor 22pF
//    Capacitor 100nF
//    Crystal 16MHz
//    Buzzer 5V


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

RTC_DS1307 RTC;
int pin=17;
int relay=1;
int ap=16;
int hours; 
int hh; 
int mm;
int ss;
int timecc;
int buzer = 0;

int segmentA = 2;
int segmentB = 3;
int segmentC = 4;
int segmentD = 5;
int segmentE = 6;
int segmentF = 7;
int segmentG = 8;
//int ampm = 9;
int digitOne = 10;
int digitTwo = 11;
int digitThree = 12;
int digitFour = 13;
int hoursButton = A0;
int minsButton = A1;
int enter = 9;

byte value,value2,value3;

void setup() {
  pinMode(buzer,OUTPUT);
  pinMode(pin,OUTPUT);
  pinMode(relay,OUTPUT);
 
  pinMode(segmentA, OUTPUT);
  pinMode(segmentB, OUTPUT);
  pinMode(segmentC, OUTPUT);
  pinMode(segmentD, OUTPUT);
  pinMode(segmentE, OUTPUT);
  pinMode(segmentF, OUTPUT);
  pinMode(segmentG, OUTPUT);
  pinMode(digitOne, OUTPUT);
  pinMode(digitTwo, OUTPUT);
  pinMode(digitThree, OUTPUT);
  pinMode(digitFour, OUTPUT);

  pinMode(hoursButton, INPUT_PULLUP);
  pinMode(minsButton, INPUT_PULLUP);
  pinMode(enter, INPUT_PULLUP);
  pinMode(ap,OUTPUT);
 
  Wire.begin();
  RTC.begin();  

 
  if (! RTC.isrunning()) {
   
    RTC.adjust(DateTime(__DATE__, __TIME__));
  }

 

 Wire.beginTransmission(0X68);
 Wire.write(0x07); 
 Wire.write(0x10); 
 Wire.endTransmission();

 digitalWrite(buzer,HIGH);
 delay(1000);
 digitalWrite(buzer,LOW);
 value = EEPROM.read(0);
 value2 = EEPROM.read(1);
 if(value>23){
  EEPROM.write(0, 0);
 }
 if(value2>59){
  EEPROM.write(1, 0);
 }
 
}

void loop() {
  
  aman:
  value = EEPROM.read(0);
  value2 = EEPROM.read(1);
  value3 = EEPROM.read(2);
  DateTime now = RTC.now(); 
  hours = now.hour(); 
  mm = now.minute();
  ss = now.second(); 
  if(hours>23){
  digitalWrite(pin,HIGH);
  }
  else digitalWrite(pin,LOW);
 
  hh = hours;

  if (hours < 1) {
    hh = 00;
  }

  if ((hours > 24) && (hours < 24)) {
    hh = hours - 24;
  }

  timecc = hh*100+mm;
  showNum(timecc);

  if (digitalRead(hoursButton) == LOW) {
    mati();
   
    delay(200);
    hours++;
    ss = 00;

    if (hours > 23) {
      hours = 00;
    }

    updateRTC();
  } 

 
  if (digitalRead(minsButton) == LOW) {
    mati();
    //debounce
    delay(200);

    mm++;
    ss = 00;

    if (mm >59) {
      mm = 00;
    }

    updateRTC();
  }

  if (digitalRead(enter) == LOW){
    mati();
    delay(200);
    if(digitalRead(enter)==LOW){
      if(value3==1){
        for(int a=0; a<500; a++){
          mati();
        digitalWrite(digitOne,LOW);
        digitalWrite(digitTwo,HIGH);
        digitalWrite(digitThree, LOW);
        digitalWrite(digitFour,LOW);
        digitalWrite(segmentA,LOW);
        digitalWrite(segmentB,LOW);
        digitalWrite(segmentC,LOW);
        digitalWrite(segmentD,LOW);
        digitalWrite(segmentE,LOW);
        digitalWrite(segmentF,LOW);
        digitalWrite(segmentG,HIGH);
        delay(4);
        mati();
        digitalWrite(digitOne,LOW);
        digitalWrite(digitTwo,LOW);
        digitalWrite(digitThree, HIGH);
        digitalWrite(digitFour,LOW);
        digitalWrite(segmentA,LOW);
        digitalWrite(segmentB,HIGH);
        digitalWrite(segmentC,HIGH);
        digitalWrite(segmentD,HIGH);
        digitalWrite(segmentE,LOW);
        digitalWrite(segmentF,LOW);
        digitalWrite(segmentG,LOW);
        delay(4);
        mati();
        digitalWrite(digitOne,LOW);
        digitalWrite(digitTwo,LOW);
        digitalWrite(digitThree, LOW);
        digitalWrite(digitFour,HIGH);
        digitalWrite(segmentA,LOW);
        digitalWrite(segmentB,HIGH);
        digitalWrite(segmentC,HIGH);
        digitalWrite(segmentD,HIGH);
        digitalWrite(segmentE,LOW);
        digitalWrite(segmentF,LOW);
        digitalWrite(segmentG,LOW);
        delay(4);

        }
        EEPROM.write(2, 0);
        goto aman;
      }
      else{
        for(int a=0; a<500; a++){
          mati();
        digitalWrite(digitOne,LOW);
        digitalWrite(digitTwo,LOW);
        digitalWrite(digitThree, HIGH);
        digitalWrite(digitFour,LOW);
        digitalWrite(segmentA,LOW);
        digitalWrite(segmentB,LOW);
        digitalWrite(segmentC,LOW);
        digitalWrite(segmentD,LOW);
        digitalWrite(segmentE,LOW);
        digitalWrite(segmentF,LOW);
        digitalWrite(segmentG,HIGH);
        delay(4);
        mati();
        digitalWrite(digitOne,LOW);
        digitalWrite(digitTwo,LOW);
        digitalWrite(digitThree, LOW);
        digitalWrite(digitFour,HIGH);
        digitalWrite(segmentA,LOW);
        digitalWrite(segmentB,LOW);
        digitalWrite(segmentC,LOW);
        digitalWrite(segmentD,HIGH);
        digitalWrite(segmentE,LOW);
        digitalWrite(segmentF,LOW);
        digitalWrite(segmentG,HIGH);
        delay(4);
        }
        EEPROM.write(2, 1);
        goto aman;
      }
    }
    timecc=value*100+value2;
    while(digitalRead(enter)==HIGH){
      timecc=value*100+value2;
      showNum(timecc);
      if(digitalRead(hoursButton)==LOW){
        mati();
        delay(200);
        value++;
        if(value>23){
          value=00;
        }
         EEPROM.write(0, value);
      }

      if(digitalRead(minsButton)==LOW){
        mati();
        delay(200);
        value2++;
        if(value2>59){
          value2=00;
        }
        EEPROM.write(1, value2);
      }
    }
    mati();
    delay(200);
  }
if(EEPROM.read(2)==1){
  
  if(value==hours&&value2==mm){
    for(int a=0;a<56;a++){
      showNum(timecc);
     if(a>0&&a<4){
      digitalWrite(buzer,HIGH);
     } 
     else if(a>4&&a<8){
      digitalWrite(buzer,LOW); 
     }
     else if(a>8&&a<12){
      digitalWrite(buzer,HIGH); 
     }
     else if(a>12&&a<16){
      digitalWrite(buzer,LOW); 
     }
     else if(a>16&&a<20){
      digitalWrite(buzer,HIGH); 
     }
     else if(a>20&&a<24){
      digitalWrite(buzer,LOW); 
     }
     else if(a>24&&a<28){
      digitalWrite(buzer,HIGH); 
     }
     else if(a>28&&a<56){
      digitalWrite(buzer,LOW); 
     }
    }

  }
}
  

} 


void showNum(int n) {

  
  mati();
  int n1 = (n%10000)/1000;
  if (n > 999) {
    printNumber(n1,1);
  }
  delay(4);
mati();
 
  int n2 = (n%1000)/100;
  printNumber(n2,2); 
  delay(4);
mati();
 
  int n3 = (n%100)/10;
  printNumber(n3,3);
  delay(4);
mati();
 
  int n4 = n%10;
  printNumber(n4,4); 
  delay(3);

}

void printNumber(int n, int d) {

  
  if(d==1)  {
    digitalWrite(digitOne,HIGH);
    digitalWrite(digitTwo,LOW);
    digitalWrite(digitThree,LOW);
    digitalWrite(digitFour,LOW);

    
    if ((hours == 12) || (hours == 22) || (hours == 23)) {
   
    } 
    else {
     
    }
  } 

  if(d==2) {
    digitalWrite(digitOne,LOW);
    digitalWrite(digitTwo,HIGH);
    digitalWrite(digitThree, LOW);
    digitalWrite(digitFour,LOW);

   
    if ((hours > 12) && (hours < 22)) {
   
    } 
    else {
      
    }
  }

  if(d==3) {
    digitalWrite(digitOne,LOW);
    digitalWrite(digitTwo,LOW);
    digitalWrite(digitThree,HIGH);
    digitalWrite(digitFour,LOW);
  
  }

  if(d==4) {
    digitalWrite(digitOne,LOW);
    digitalWrite(digitTwo,LOW);
    digitalWrite(digitThree,LOW);
    digitalWrite(digitFour,HIGH);
   
  }

 
  switch(n) {
  case 0:
    digitalWrite(segmentA,LOW);
    digitalWrite(segmentB,LOW);
    digitalWrite(segmentC,LOW);
    digitalWrite(segmentD,LOW);
    digitalWrite(segmentE,LOW);
    digitalWrite(segmentF,LOW);
    digitalWrite(segmentG,HIGH);
    break;

  case 1:
    digitalWrite(segmentA,HIGH);
    digitalWrite(segmentB,LOW);
    digitalWrite(segmentC,LOW);
    digitalWrite(segmentD,HIGH);
    digitalWrite(segmentE,HIGH);
    digitalWrite(segmentF,HIGH);
    digitalWrite(segmentG,HIGH);
    break;

  case 2:
    digitalWrite(segmentA,LOW);
    digitalWrite(segmentB,LOW);
    digitalWrite(segmentC,HIGH);
    digitalWrite(segmentD,LOW);
    digitalWrite(segmentE,LOW);
    digitalWrite(segmentF,HIGH);
    digitalWrite(segmentG,LOW);
    break;

  case 3:
    digitalWrite(segmentA,LOW);
    digitalWrite(segmentB,LOW);
    digitalWrite(segmentC,LOW);
    digitalWrite(segmentD,LOW);
    digitalWrite(segmentE,HIGH);
    digitalWrite(segmentF,HIGH);
    digitalWrite(segmentG,LOW);
    break;

  case 4:
    digitalWrite(segmentA,HIGH);
    digitalWrite(segmentB,LOW);
    digitalWrite(segmentC,LOW);
    digitalWrite(segmentD,HIGH);
    digitalWrite(segmentE,HIGH);
    digitalWrite(segmentF,LOW);
    digitalWrite(segmentG,LOW);
    break;

  case 5:
    digitalWrite(segmentA,LOW);
    digitalWrite(segmentB,HIGH);
    digitalWrite(segmentC,LOW);
    digitalWrite(segmentD,LOW);
    digitalWrite(segmentE,HIGH);
    digitalWrite(segmentF,LOW);
    digitalWrite(segmentG,LOW);
    break;

  case 6:
    digitalWrite(segmentA,LOW);
    digitalWrite(segmentB,HIGH);
    digitalWrite(segmentC,LOW);
    digitalWrite(segmentD,LOW);
    digitalWrite(segmentE,LOW);
    digitalWrite(segmentF,LOW);
    digitalWrite(segmentG,LOW);
    break;

  case 7:
    digitalWrite(segmentA,LOW);
    digitalWrite(segmentB,LOW);
    digitalWrite(segmentC,LOW);
    digitalWrite(segmentD,HIGH);
    digitalWrite(segmentE,HIGH);
    digitalWrite(segmentF,HIGH);
    digitalWrite(segmentG,HIGH);
    break;

  case 8:
    digitalWrite(segmentA,LOW);
    digitalWrite(segmentB,LOW);
    digitalWrite(segmentC,LOW);
    digitalWrite(segmentD,LOW);
    digitalWrite(segmentE,LOW);
    digitalWrite(segmentF,LOW);
    digitalWrite(segmentG,LOW);
    break;

  case 9:
    digitalWrite(segmentA,LOW);
    digitalWrite(segmentB,LOW);
    digitalWrite(segmentC,LOW);
    digitalWrite(segmentD,LOW);
    digitalWrite(segmentE,HIGH);
    digitalWrite(segmentF,LOW);
    digitalWrite(segmentG,LOW);
    break;
  }
}

byte decToBcd(byte val) {
  return ( (val/10*16) + (val%10) );
}

byte bcdToDec(byte val) {
  return ( (val/16*10) + (val%16) );
}

void updateRTC() {
  Wire.beginTransmission(104);
  Wire.write(0);
  Wire.write(decToBcd(ss));
  Wire.write(decToBcd(mm));
  Wire.write(decToBcd(hours));
  Wire.endTransmission();
}

void mati(){
   digitalWrite(segmentA,HIGH);
    digitalWrite(segmentB,HIGH);
    digitalWrite(segmentC,HIGH);
    digitalWrite(segmentD,HIGH);
    digitalWrite(segmentE,HIGH);
    digitalWrite(segmentF,HIGH);
    digitalWrite(segmentG,HIGH);
}

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4.3 Pemrograman

// seven segment common anoda

// Mikrokontroler ATmega328

// RTC DS1307

// Seven Segment Common Anoda

// Beberapa tombol

// Resistor 560 Ohm

// Resistor 1k

// Resistor 10k

// Capacitor 22pF

// Capacitor 100nF

// Crystal 16MHz

// Buzzer 5V

#include <Wire.h>

#include "RTClib.h"

#include <EEPROM.h>

RTC_DS1307 RTC;

int pin=17;

int relay=1;

int ap=16;

int hours;

int hh;

int mm;

int ss;

int timecc;

int buzer = 0;

int segmentA = 2;

int segmentB = 3;

int segmentC = 4;

int segmentD = 5;

int segmentE = 6;

int segmentF = 7;

int segmentG = 8;

//int ampm = 9;

int digitOne = 10;

int digitTwo = 11;

int digitThree = 12;

int digitFour = 13;

int hoursButton = A0;

int minsButton = A1;

int enter = 9;

byte value,value2,value3;

void setup() {

pinMode(buzer,OUTPUT);

pinMode(pin,OUTPUT);

pinMode(relay,OUTPUT);

pinMode(segmentA, OUTPUT);

pinMode(segmentB, OUTPUT);

pinMode(segmentC, OUTPUT);

pinMode(segmentD, OUTPUT);

pinMode(segmentE, OUTPUT);

pinMode(segmentF, OUTPUT);

pinMode(segmentG, OUTPUT);

pinMode(digitOne, OUTPUT);

pinMode(digitTwo, OUTPUT);

pinMode(digitThree, OUTPUT);

pinMode(digitFour, OUTPUT);

pinMode(hoursButton, INPUT_PULLUP);

pinMode(minsButton, INPUT_PULLUP);

pinMode(enter, INPUT_PULLUP);

pinMode(ap,OUTPUT);

Wire.begin();

RTC.begin();

if (! RTC.isrunning()) {

RTC.adjust(DateTime(__DATE__, __TIME__));

}

Wire.beginTransmission(0X68);

Wire.write(0x07);

Wire.write(0x10);

Wire.endTransmission();

digitalWrite(buzer,HIGH);

delay(1000);

digitalWrite(buzer,LOW);

value = EEPROM.read(0);

value2 = EEPROM.read(1);

if(value>23){

EEPROM.write(0, 0);

}

if(value2>59){

EEPROM.write(1, 0);

}

void loop() {

aman:

value = EEPROM.read(0);

value2 = EEPROM.read(1);

value3 = EEPROM.read(2);

DateTime now = RTC.now();

hours = now.hour();

mm = now.minute();

ss = now.second();

if(hours>23){

digitalWrite(pin,HIGH);

}

else digitalWrite(pin,LOW);

hh = hours;

if (hours < 1) {

hh = 00;

}

if ((hours > 24) && (hours < 24)) {

hh = hours - 24;

}

timecc = hh*100+mm;

showNum(timecc);

if (digitalRead(hoursButton) == LOW) {

mati();

delay(200);

hours++;

ss = 00;

if (hours > 23) {

hours = 00;

}

updateRTC();

}

if (digitalRead(minsButton) == LOW) {

mati();

//debounce

delay(200);

mm++;

ss = 00;

if (mm >59) {

mm = 00;

}

updateRTC();

}

if (digitalRead(enter) == LOW){

mati();

delay(200);

if(digitalRead(enter)==LOW){

if(value3==1){

for(int a=0; a<500; a++){

mati();

digitalWrite(digitOne,LOW);

digitalWrite(digitTwo,HIGH);

digitalWrite(digitThree, LOW);

digitalWrite(digitFour,LOW);

digitalWrite(segmentA,LOW);

digitalWrite(segmentB,LOW);

digitalWrite(segmentC,LOW);

digitalWrite(segmentD,LOW);

digitalWrite(segmentE,LOW);

digitalWrite(segmentF,LOW);

digitalWrite(segmentG,HIGH);

delay(4);

mati();

digitalWrite(digitOne,LOW);

digitalWrite(digitTwo,LOW);

digitalWrite(digitThree, HIGH);

digitalWrite(digitFour,LOW);

digitalWrite(segmentA,LOW);

digitalWrite(segmentB,HIGH);

digitalWrite(segmentC,HIGH);

digitalWrite(segmentD,HIGH);

digitalWrite(segmentE,LOW);

digitalWrite(segmentF,LOW);

digitalWrite(segmentG,LOW);

delay(4);

mati();

digitalWrite(digitOne,LOW);

digitalWrite(digitTwo,LOW);

digitalWrite(digitThree, LOW);

digitalWrite(digitFour,HIGH);

digitalWrite(segmentA,LOW);

digitalWrite(segmentB,HIGH);

digitalWrite(segmentC,HIGH);

digitalWrite(segmentD,HIGH);

digitalWrite(segmentE,LOW);

digitalWrite(segmentF,LOW);

digitalWrite(segmentG,LOW);

delay(4);

}

EEPROM.write(2, 0);

goto aman;

}

else{

for(int a=0; a<500; a++){

mati();

digitalWrite(digitOne,LOW);

digitalWrite(digitTwo,LOW);

digitalWrite(digitThree, HIGH);

digitalWrite(digitFour,LOW);

digitalWrite(segmentA,LOW);

digitalWrite(segmentB,LOW);

digitalWrite(segmentC,LOW);

digitalWrite(segmentD,LOW);

digitalWrite(segmentE,LOW);

digitalWrite(segmentF,LOW);

digitalWrite(segmentG,HIGH);

delay(4);

mati();

digitalWrite(digitOne,LOW);

digitalWrite(digitTwo,LOW);

digitalWrite(digitThree, LOW);

digitalWrite(digitFour,HIGH);

digitalWrite(segmentA,LOW);

digitalWrite(segmentB,LOW);

digitalWrite(segmentC,LOW);

digitalWrite(segmentD,HIGH);

digitalWrite(segmentE,LOW);

digitalWrite(segmentF,LOW);

digitalWrite(segmentG,HIGH);

delay(4);

}

EEPROM.write(2, 1);

goto aman;

}

timecc=value*100+value2;

while(digitalRead(enter)==HIGH){

timecc=value*100+value2;

showNum(timecc);

if(digitalRead(hoursButton)==LOW){

mati();

delay(200);

value++;

if(value>23){

value=00;

}

EEPROM.write(0, value);

}

if(digitalRead(minsButton)==LOW){

mati();

delay(200);

value2++;

if(value2>59){

value2=00;

}

EEPROM.write(1, value2);

}

mati();

delay(200);

}

if(EEPROM.read(2)==1){

if(value==hours&&value2==mm){

for(int a=0;a<56;a++){

showNum(timecc);

if(a>0&&a<4){

digitalWrite(buzer,HIGH);

}

else if(a>4&&a<8){

digitalWrite(buzer,LOW);

}

else if(a>8&&a<12){

digitalWrite(buzer,HIGH);

}

else if(a>12&&a<16){

digitalWrite(buzer,LOW);

}

else if(a>16&&a<20){

digitalWrite(buzer,HIGH);

}

else if(a>20&&a<24){

digitalWrite(buzer,LOW);

}

else if(a>24&&a<28){

digitalWrite(buzer,HIGH);

}

else if(a>28&&a<56){

digitalWrite(buzer,LOW);

}

void showNum(int n) {

mati();

int n1 = (n%10000)/1000;

if (n > 999) {

printNumber(n1,1);

}

delay(4);

mati();

int n2 = (n%1000)/100;

printNumber(n2,2);

delay(4);

mati();

int n3 = (n%100)/10;

printNumber(n3,3);

delay(4);

mati();

int n4 = n%10;

printNumber(n4,4);

delay(3);

}

void printNumber(int n, int d) {

if(d==1) {

digitalWrite(digitOne,HIGH);

digitalWrite(digitTwo,LOW);

digitalWrite(digitThree,LOW);

digitalWrite(digitFour,LOW);

if ((hours == 12) || (hours == 22) || (hours == 23)) {

}

else {

}

if(d==2) {

digitalWrite(digitOne,LOW);

digitalWrite(digitTwo,HIGH);

digitalWrite(digitThree, LOW);

digitalWrite(digitFour,LOW);

if ((hours > 12) && (hours < 22)) {

}

else {

}

if(d==3) {

digitalWrite(digitOne,LOW);

digitalWrite(digitTwo,LOW);

digitalWrite(digitThree,HIGH);

digitalWrite(digitFour,LOW);

}

if(d==4) {

digitalWrite(digitOne,LOW);

digitalWrite(digitTwo,LOW);

digitalWrite(digitThree,LOW);

digitalWrite(digitFour,HIGH);

}

switch(n) {

case 0:

digitalWrite(segmentA,LOW);

digitalWrite(segmentB,LOW);

digitalWrite(segmentC,LOW);

digitalWrite(segmentD,LOW);

digitalWrite(segmentE,LOW);

digitalWrite(segmentF,LOW);

digitalWrite(segmentG,HIGH);

break;

case 1:

digitalWrite(segmentA,HIGH);

digitalWrite(segmentB,LOW);

digitalWrite(segmentC,LOW);

digitalWrite(segmentD,HIGH);

digitalWrite(segmentE,HIGH);

digitalWrite(segmentF,HIGH);

digitalWrite(segmentG,HIGH);

break;

case 2:

digitalWrite(segmentA,LOW);

digitalWrite(segmentB,LOW);

digitalWrite(segmentC,HIGH);

digitalWrite(segmentD,LOW);

digitalWrite(segmentE,LOW);

digitalWrite(segmentF,HIGH);

digitalWrite(segmentG,LOW);

break;

case 3:

digitalWrite(segmentA,LOW);

digitalWrite(segmentB,LOW);

digitalWrite(segmentC,LOW);

digitalWrite(segmentD,LOW);

digitalWrite(segmentE,HIGH);

digitalWrite(segmentF,HIGH);

digitalWrite(segmentG,LOW);

break;

case 4:

digitalWrite(segmentA,HIGH);

digitalWrite(segmentB,LOW);

digitalWrite(segmentC,LOW);

digitalWrite(segmentD,HIGH);

digitalWrite(segmentE,HIGH);

digitalWrite(segmentF,LOW);

digitalWrite(segmentG,LOW);

break;

case 5:

digitalWrite(segmentA,LOW);

digitalWrite(segmentB,HIGH);

digitalWrite(segmentC,LOW);

digitalWrite(segmentD,LOW);

digitalWrite(segmentE,HIGH);

digitalWrite(segmentF,LOW);

digitalWrite(segmentG,LOW);

break;

case 6:

digitalWrite(segmentA,LOW);

digitalWrite(segmentB,HIGH);

digitalWrite(segmentC,LOW);

digitalWrite(segmentD,LOW);

digitalWrite(segmentE,LOW);

digitalWrite(segmentF,LOW);

digitalWrite(segmentG,LOW);

break;

case 7:

digitalWrite(segmentA,LOW);

digitalWrite(segmentB,LOW);

digitalWrite(segmentC,LOW);

digitalWrite(segmentD,HIGH);

digitalWrite(segmentE,HIGH);

digitalWrite(segmentF,HIGH);

digitalWrite(segmentG,HIGH);

break;

case 8:

digitalWrite(segmentA,LOW);

digitalWrite(segmentB,LOW);

digitalWrite(segmentC,LOW);

digitalWrite(segmentD,LOW);

digitalWrite(segmentE,LOW);

digitalWrite(segmentF,LOW);

digitalWrite(segmentG,LOW);

break;

case 9:

digitalWrite(segmentA,LOW);

digitalWrite(segmentB,LOW);

digitalWrite(segmentC,LOW);

digitalWrite(segmentD,LOW);

digitalWrite(segmentE,HIGH);

digitalWrite(segmentF,LOW);

digitalWrite(segmentG,LOW);

break;

}

byte decToBcd(byte val) {

return ( (val/10*16) + (val%10) );

}

byte bcdToDec(byte val) {

return ( (val/16*10) + (val%16) );

}

void updateRTC() {

Wire.beginTransmission(104);

Wire.write(0);

Wire.write(decToBcd(ss));

Wire.write(decToBcd(mm));

Wire.write(decToBcd(hours));

Wire.endTransmission();

}

void mati(){

digitalWrite(segmentA,HIGH);

digitalWrite(segmentB,HIGH);

digitalWrite(segmentC,HIGH);

digitalWrite(segmentD,HIGH);

digitalWrite(segmentE,HIGH);

digitalWrite(segmentF,HIGH);

digitalWrite(segmentG,HIGH);

}

hasil dari pembuatan jam digital bisa dilihat pada gambar berikut ini.Semoga bermanfaat, salam ngeblog.

Posted in Elektronika, Kuliah Tagged with: Alarm, jam digital, Mikrokontroller, RTC

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