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63 changes: 63 additions & 0 deletions binaryclock_RTC_v1.1.ino
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Original file line number Diff line number Diff line change
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#include <DS3231.h>

DS3231 rtc(SDA, SCL);// Init the DS3231 using the hardware interface

Time t;// Init a Time-data structure

int second=0, minute=0, hour=0; //start the time on 00:00:00
int munit,hunit,minuteTens,hourTens,valm=0,valh=0,ledstats,i;

// LEDS positions matrix
int leds[4][4] = {
{17,2,17,1},
{17,5,4,3},
{9,8,7,6},
{13,12,11,10}
};

void setup() {
//set outputs
for(int k=1;k<=13;k++) {
pinMode(k, OUTPUT);
digitalWrite(k, LOW);

}
rtc.begin();
}

void loop() {
t = rtc.getTime();
second = t.sec;
minute = t.min;
hour = t.hour;
//Serial.println(second);


munit = (int) (minute%10); //sets the variable munit and hunit for the unit digits
hunit = (int) (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);}

delay(500);
}