Need help adding DS3231 RTC to my binary clock

this new 24-hour, arduino uno binary clock. features nice french arcitecture , circuitry dual transistor constant current setup 1 watt, 350ma leds. clock made of mdf. if interested, can post electrical schematics.

i add ds3231 rtc module can keep better time.

i have included latest revision of code. not sure how remove "millis" thing , integrate ds3231 code. please help. many in advance.

cheers.






here led layout project:

code: [select]


/*
an open-source binary clock arduino.
based on code rob faludi (http://www.faludi.com)
code under (cc) lucas berbesson
http://creativecommons.org/license/cc-gpl
*/
#include <ds3231.h>

// init ds3231 using hardware interface
ds3231  rtc(sda, scl);

// init time-data structure
time  t;


int second=0, minute=0, hour=0; //start time on 00:00:00
int munit,hunit,minutetens,hourtens,valm=0,valh=0,ledstats,i;
// leds positions matrix
int leds[4][4] = {
 {17,1,17,0},
 {17,13,2,3},
 {10,9,7,4},
 {11,12,8,5}
};
void setup() {
  //set outputs
  for(int k=0;k<=13;k++) {
    pinmode(k, output);
    digitalwrite(k, low);

  }
  pinmode(a1, input);
  pinmode(a2, input);
  rtc.begin();
}

void loop() {
  t = rtc.gettime();
  second = t.sec;
  minute = t.min;
  hour = t.hour;


  munit = minute%10; //sets variable munit , hunit unit digits
  hunit = hour%10;
  minutetens = (int)(minute/10);
  hourtens = (int)(hour/10);
  //minutes units
  if(munit & 1) {  digitalwrite(leds[3][3], high);} else {  digitalwrite(leds[3][3],low);}
  if(munit & 2) {digitalwrite(leds[2][3], high);} else {digitalwrite(leds[2][3],low);}
  if(munit & 4) {digitalwrite(leds[1][3], high);} else {digitalwrite(leds[1][3],low);}
  if(munit & 8) {digitalwrite(leds[0][3], high);} else {digitalwrite(leds[0][3],low);}

  //minutes
  if(minutetens & 1)  {digitalwrite(leds[3][2], high);} else {digitalwrite(leds[3][2],low);}
  if(minutetens & 2)  {digitalwrite(leds[2][2], high);} else {digitalwrite(leds[2][2],low);}
  if(minutetens & 4) {digitalwrite(leds[1][2], high);} else {digitalwrite(leds[1][2],low);}

  //hour units
  if(hunit & 1) {digitalwrite(leds[3][1], high);} else {digitalwrite(leds[3][1],low);}
  if(hunit & 2) {digitalwrite(leds[2][1], high);} else {digitalwrite(leds[2][1],low);}
  if(hunit & 4) {digitalwrite(leds[1][1], high);} else {digitalwrite(leds[1][1],low);}
  if(hunit & 8) {digitalwrite(leds[0][1], high);} else {digitalwrite(leds[0][1],low);}

  //hour
  if(hourtens & 1)  {digitalwrite(leds[3][0], high);} else {digitalwrite(leds[3][0],low);}
  if(hourtens & 2)  {digitalwrite(leds[2][0], high);} else {digitalwrite(leds[2][0],low);}

   valm = digitalread(a1);    // add 1 minute when pressed
   if(valm== high) {
   minute++;
   second=0;
   rtc.settime(hour, minute, second);
   delay(250);
  }

  valh = digitalread(a2);    // add 1 hour when pressed
   if(valh==high) {
   hour++;
   if (hour>24) {
    hour = 0;
   }
   second=0;
   rtc.settime(hour, minute, second);
   delay(250);
  }
  delay(50);
}


nice clock!

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