Minor Project - Complete

I have finally got the wiring sorted out so it is now working correctly.

My Minor Project is a Binary-Coded Decimal (BCD) Light Emmiting Diode (LED) Chronological Gauging Mechanisum(CGM).

The BCDLEDCGM is laid out like this:

Hours

*
8
*
4
* *
2 2
* *
1 1

Minutes

*
8
* *
4 4
* *
2 2
* *
1 1

Seconds
*
8
* *
4 4
* *
2 2
* *
1 1


Here are some pictures of it working:

This picture shows the clock at 12:07am in 24hr time.

This picture shows the clock at 2:22am in 24hr time.






This is the sketch that the Arduino is running:


//Pin connected to DS of 74HC595
const int hourDataPin = 5;
const int minDataPin = 8;
const int secDataPin = 11;

//Pin connected to SH_CP of 74HC595
const int hourClockPin = 6;
const int minClockPin = 9;
const int secClockPin = 12;

//Pin connected to ST_CP of 74HC595
const int hourLatchPin = 7;
const int minLatchPin = 10;
const int secLatchPin = 13;


// macros from DateTime.h
/* Useful Constants */
#define SECS_PER_MIN (60UL)
#define SECS_PER_HOUR (3600UL)
#define SECS_PER_DAY (SECS_PER_HOUR * 24L)

/* Useful Macros for getting elapsed time */
#define numberOfSeconds(_time_) (_time_ % SECS_PER_MIN)
#define numberOfMinutes(_time_) ((_time_ / SECS_PER_MIN) % SECS_PER_MIN)
#define numberOfHours(_time_) (( _time_% SECS_PER_DAY) / SECS_PER_HOUR)
#define elapsedDays(_time_) ( _time_ / SECS_PER_DAY)

void setup()
{
pinMode(hourLatchPin, OUTPUT);
pinMode(minLatchPin, OUTPUT);
pinMode(secLatchPin, OUTPUT);
pinMode(hourClockPin, OUTPUT);
pinMode(minClockPin, OUTPUT);
pinMode(secClockPin, OUTPUT);
pinMode(hourDataPin, OUTPUT);
pinMode(minDataPin, OUTPUT);
pinMode(secDataPin, OUTPUT);

void loop()
{
unsigned long time = millis() / 1000;

int tenHours = ((numberOfHours(time) - (numberOfHours(time) % 10))/ 10);
int oneHours = numberOfHours(time) % 10 ;
int tenMinutes = ((numberOfMinutes(time) - (numberOfMinutes(time) % 10))/ 10);
int oneMinutes = numberOfMinutes(time) % 10 ;
int tenSeconds = ((numberOfSeconds(time) - (numberOfSeconds(time) % 10))/ 10);
int oneSeconds = numberOfSeconds(time) % 10 ;

int shiftHours = ((tenHours<<4) + oneHours);
int shiftMinutes = ((tenMinutes<<4) + oneMinutes);
int shiftSeconds = ((tenSeconds<<4) + oneSeconds);

digitalWrite(hourLatchPin, LOW);
digitalWrite(minLatchPin, LOW);
digitalWrite(secLatchPin, LOW);
// shift out the bits:
shiftOut(hourDataPin, hourClockPin, LSBFIRST,shiftHours);
shiftOut(minDataPin, minClockPin, LSBFIRST,shiftMinutes);
shiftOut(secDataPin, secClockPin, LSBFIRST,shiftSeconds);
//take the latch pin high so the LEDs will light up:
digitalWrite(hourLatchPin, HIGH);
digitalWrite(minLatchPin, HIGH);
digitalWrite(secLatchPin, HIGH);

delay(1000);
}