/*
  An open-source binary clock for Arduino.
  Source :   http://www.instructables.com/id/LED-Binary-Clock-1/
  Modified : https://www.sla99.fr
  Date : 2018-02-14
*/

int second = 0, minute = 0, hour = 12; //start the time on 00:00:00
int munit = 0;
int hunit = 0;
int valm = 0;
int valh = 0;
int ledstats = 0;
int i = 0;
boolean light = 1;

void setup() { //set outputs and inputs
  pinMode(1, OUTPUT); pinMode(2, OUTPUT); pinMode(3, OUTPUT); pinMode(4, OUTPUT); pinMode(5, OUTPUT);
  pinMode(6, OUTPUT); pinMode(7, OUTPUT); pinMode(8, OUTPUT); pinMode(9, OUTPUT); pinMode(10, OUTPUT);
  pinMode(11, OUTPUT); pinMode(12, OUTPUT); pinMode(13, OUTPUT);

  pinMode(14, INPUT);
  pinMode(19, INPUT);
  digitalWrite(14, HIGH);
  digitalWrite(19, HIGH);
}


void loop() {

  static unsigned long lastTick = 0; // set up a local variable to hold the last time we moved forward one second
  // (static variables are initialized once and keep their values between function calls)
  // move forward one second every 1000 milliseconds

  if (millis() - lastTick >= 1000) {
    lastTick = millis();
    second++;

  }

  // move forward one minute every 60 seconds
  if (second >= 60) {
    minute++;
    second = 0; // reset seconds to zero
  }

  // move forward one hour every 60 minutes
  if (minute >= 60) {
    hour++;
    minute = 0; // reset minutes to zero
  }

  if (hour >= 24) {
    hour = 0;
    minute = 0; // reset minutes to zero
  }

  munit = minute % 10; //sets the variable munit and hunit for the unit digits
  hunit = hour % 10;

  //minutes units
  if (munit == 1 || munit == 3 || munit == 5 || munit == 7 || munit == 9) {digitalWrite(1, HIGH);}else{digitalWrite(1, LOW);}
  if (munit == 2 || munit == 3 || munit == 6 || munit == 7) {digitalWrite(2, HIGH);}else{digitalWrite(2, LOW);}
  if (munit == 4 || munit == 5 || munit == 6 || munit == 7) {digitalWrite(3, HIGH);}else{digitalWrite(3, LOW);}
  if (munit == 8 || munit == 9) { digitalWrite(4, HIGH);}else{digitalWrite(4, LOW);}

  //minutes
  if ((minute >= 10 && minute < 20) || (minute >= 30 && minute < 40) || (minute >= 50 && minute < 60))  {digitalWrite(5, HIGH);}else{digitalWrite(5, LOW);}
  if (minute >= 20 && minute < 40)  {digitalWrite(6, HIGH);}else{digitalWrite(6, LOW);}
  if (minute >= 40 && minute < 60) {digitalWrite(7, HIGH);}else{digitalWrite(7, LOW);}

  //hour units
  if (hunit == 1 || hunit == 3 || hunit == 5 || hunit == 7 || hunit == 9) {digitalWrite(8, HIGH);} else {digitalWrite(8, LOW);}
  if (hunit == 2 || hunit == 3 || hunit == 6 || hunit == 7) {digitalWrite(9, HIGH);} else{digitalWrite(9, LOW);}
  if (hunit == 4 || hunit == 5 || hunit == 6 || hunit == 7) {digitalWrite(10, HIGH);} else{digitalWrite(10, LOW);}
  if (hunit == 8 || hunit == 9) {digitalWrite(11, HIGH);} else{digitalWrite(11, LOW);}

  //hour
  if (hour >= 10 && hour < 20){digitalWrite(12, HIGH);}else {digitalWrite(12, LOW);}
  if (hour >= 20 && hour < 24){digitalWrite(13, HIGH);}else {digitalWrite(13, LOW);}

  valm = digitalRead(14);    // add one minute when pressed
  if (valm == LOW) {
    minute++;
    second = 0;
    delay(250);
  }

  valh = digitalRead(19);    // add one hour when pressed
  if (valh == LOW) {
    hour++;
    second = 0;
    delay(250);
  }
}