Arduino_Clock_DVD_7_Segment_Display.ino

/*
 * Simple Arduino Clock using Old DVD Player Display
 * www.KendrickTabi.com
 * http://www.kendricktabi.com/2015/05/simple-arduino-clock-using-old-dvd-display.html
 */

#include <Time.h>
#include <SevSeg.h>

float time;

SevSeg sevseg;

byte numDigits = 6;  // Number of digits used
byte digitPins[] = {10, 9, 8, 7, 6, 5};
byte segmentPins[] = {21, 20, 19, 18, 15, 14, 16, 22};
  
void setup() {
  pinMode(2, INPUT_PULLUP);   // The three pins to set the time manually
  pinMode(3, INPUT_PULLUP);
  pinMode(4, INPUT_PULLUP);
  
  Serial.begin(9600);
  while (Serial) ;                // For Leonardo
  Serial.println("Simple Arduino Clock using Old DVD Player Display"); // Debug
  
  setTime(0, 0, 0, 5, 10, 15);    // HH:MM:SS MM-DD-YY

  sevseg.begin(COMMON_ANODE, numDigits, digitPins, segmentPins);
  sevseg.setBrightness(50);       // Will act as current limitor
}

void  loop() { 
  xtime();
  digitalClockDisplay();
  segmentDisplay();
  Serial.println(time);
  sevseg.refreshDisplay();
}

void digitalClockDisplay() {
  Serial.print(hour());
  printDigits(minute());
  printDigits(second());
  Serial.println(); 
}

void printDigits(int digits) {
  Serial.print(":");
  if(digits < 10)
    Serial.print('0');
  Serial.print(digits);
}

void segmentDisplay() {
  time = hour() * 0.01;
  time += minute() * 0.0001;
  time += second() * 0.000001;
  sevseg.setNumber(time, 6);
}


void xtime(){
  if (digitalRead(2) == LOW) {  
     adjustTime(3600);  // increment by 1 hour
     Serial.println("+ Hr");
     delay(300);
  }

  if (digitalRead(3) == LOW) {  
     adjustTime(60);    // increment by 1 minute
     Serial.println("+ Min");
     delay(300);
  }
  
  if (digitalRead(4) == LOW) {  
     adjustTime(-60);    // decrement by 1 miinute
     Serial.println("- Min");
     delay(300);
  }
}