Ambient Real-Time Clock

/* The Code is Designed by RoboCircuits
 *  Visit our Website http://robocircuits.com for assistance on this code
 *  This code uses DS3231.h Library download it from http://robocircuits.com
 *  For Full Tutorial Watch video on our YouTube Channel https://youtube.com/robocircuits
 */

#include <Adafruit_NeoPixel.h>
#include <DS3231.h>

int i=0,j=0,k=150;

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

#ifdef __AVR__
  #include <avr/power.h>
#endif

// Which pin on the Arduino is connected to the NeoPixels?
// On a Trinket or Gemma we suggest changing this to 1
#define PIN            6

// How many NeoPixels are attached to the Arduino?
#define NUMPIXELS      45

// When we setup the NeoPixel library, we tell it how many pixels, and which pin to use to send signals.
// Note that for older NeoPixel strips you might need to change the third parameter--see the strandtest
// example for more information on possible values.
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

int delayval = 500; // delay for half a second

void setup() {
  // This is for Trinket 5V 16MHz, you can remove these three lines if you are not using a Trinket
#if defined (__AVR_ATtiny85__)
  if (F_CPU == 16000000) clock_prescale_set(clock_div_1);
#endif
  // End of trinket special code

  pixels.begin(); // This initializes the NeoPixel library.
  // Setup Serial connection
  Serial.begin(115200);
  
  // Initialize the rtc object
  rtc.begin();
  
  // The following lines can be uncommented to set the date and time
  //rtc.setDOW(WEDNESDAY);     // Set Day-of-Week to SUNDAY
  //rtc.setTime(12, 0, 0);     // Set the time to 12:00:00 (24hr format)
  //rtc.setDate(1, 1, 2014);   // Set the date to January 1st, 2014
}

void loop() {
  if(digitalRead(2)==HIGH)
  {
  int a= analogRead(A0);
  int b= analogRead(A1);
  int c= analogRead(A2);
  i=map(a,0,1025,0,150); // Green Color
  j=map(b,0,1025,0,150); // Blue Color
  k=map(c,0,1025,0,150); // Red Color
  }
  else
 {
  i= 0;
  j= 0;
  k= 150;
}

// Code for Backlight
  for(int x=29;x<=45;x++)
{
pixels.setPixelColor(x, pixels.Color(i,j,k));
   pixels.show();
}

// Fetching Real Time from rtc
String x=rtc.getTimeStr();
  // Send time
  Serial.println(rtc.getTimeStr());
  int hour1= x.charAt(0);
  int hour2= x.charAt(1);
  int min1= x.charAt(3);
  int min2= x.charAt(4);
  hour1=hour1-48;
  hour2=hour2-48;
  min1=min1-48;
  min2=min2-48;

  // Displaying time on Clock
switch(hour1)
{
//case 0 : zero(0);
//break;
case 1 : one(0);
break;
case 2 : two(0);
break;
  default : nulll(0);
  break;  
}
switch(hour2)
{
case 0 : zero(7);
break;
case 1 : one(7);
break;
case 2 : two(7);
break;
case 3 : three(7);
break;
case 4 : four(7);
break;
case 5 : five(7);
break;
case 6 : six(7);
break;
case 7 : seven(7);
break;
case 8 : eight(7);
break;
case 9 : nine(7);
break;
  default : nulll(7);
  break;  
}
switch(min1)
{
case 0 : zero(15);
break;
case 1 : one(15);
break;
case 2 : two(15);
break;
case 3 : three(15);
break;
case 4 : four(15);
break;
case 5 : five(15);
break;
  default : nulll(15);
  break;  
}   
switch(min2)
{
case 0 : zero(22);
break;
case 1 : one(22);
break;
case 2 : two(22);
break;
case 3 : three(22);
break;
case 4 : four(22);
break;
case 5 : five(22);
break;
case 6 : six(22);
break;
case 7 : seven(22);
break;
case 8 : eight(22);
break;
case 9 : nine(22);
break;
  default : nulll(22);
  break;  
}
 pixels.setPixelColor(14, pixels.Color(i,j,k));
   pixels.show();
   delay(250);
   pixels.setPixelColor(14, pixels.Color(0,0,0));
   pixels.show();
   delay(250);
}



void zero(int a)
{
  pixels.setPixelColor(a+0, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+1, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+2, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+3, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+4, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+5, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+6, pixels.Color(i,j,k));
   pixels.show();
}
void one(int a)
{
  pixels.setPixelColor(a+0, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+1, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+2, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+3, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+4, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+5, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+6, pixels.Color(i,j,k));
   pixels.show();
}
void two(int a)
{
  pixels.setPixelColor(a+0, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+1, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+2, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+3, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+4, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+5, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+6, pixels.Color(0,0,0));
   pixels.show();
}
void three(int a)
{
  pixels.setPixelColor(a+0, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+1, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+2, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+3, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+4, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+5, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+6, pixels.Color(i,j,k));
   pixels.show();
}
void four(int a)
{
  pixels.setPixelColor(a+0, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+1, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+2, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+3, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+4, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+5, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+6, pixels.Color(i,j,k));
   pixels.show();
}
void five(int a)
{
  pixels.setPixelColor(a+0, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+1, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+2, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+3, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+4, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+5, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+6, pixels.Color(i,j,k));
   pixels.show();
}
void six(int a)
{
  pixels.setPixelColor(a+0, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+1, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+2, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+3, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+4, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+5, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+6, pixels.Color(i,j,k));
   pixels.show();
}
void seven(int a)
{
  pixels.setPixelColor(a+0, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+1, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+2, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+3, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+4, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+5, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+6, pixels.Color(i,j,k));
   pixels.show();
}
void eight(int a)
{
  pixels.setPixelColor(a+0, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+1, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+2, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+3, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+4, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+5, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+6, pixels.Color(i,j,k));
   pixels.show();
}
void nine(int a)
{
  pixels.setPixelColor(a+0, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+1, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+2, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+3, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+4, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+5, pixels.Color(i,j,k));
   pixels.show();
   pixels.setPixelColor(a+6, pixels.Color(i,j,k));
   pixels.show();
}
void nulll(int a)
{
  pixels.setPixelColor(a+0, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+1, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+2, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+3, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+4, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+5, pixels.Color(0,0,0));
   pixels.show();
   pixels.setPixelColor(a+6, pixels.Color(0,0,0));
   pixels.show();
}