Arduino Brake Rotor Clock

1#include <Wire.h>
2#include <RTClib.h>
3
4//DP G F E D C B A
5const
6  byte segmentMap[10] = {
7  B00111111, //0
8  B00000110, //1
9  B01011011,
10  //2
11  B01001111, //3
12  B01100110, //4
13  B01101101, //5
14  B01111101,
15  //6
16  B00000111, //7
17  B01111111, //8
18  B01100111  //9 
19};
20
21RTC_DS3231
22  rtc;
23
24const int segmentPins[8] = {2,3,4,5,6,7,8,9}; // A B C D E F G DP
25const
26  int digitPins[4] = {10,11,12,13};       //DIG1 DIG2 DIG3 DIG4
27
28void setup()
29  {
30
31  // Set the segment pins as outputs
32  for (int i=0; i<8; i++) {
33
34    pinMode(segmentPins[i], OUTPUT);
35    digitalWrite(segmentPins[i], LOW);
36
37  }
38  
39  // Set the digit pins as outputs
40  for (int i=0; i<4; i++) {
41
42    pinMode(digitPins[i], OUTPUT);
43    digitalWrite(digitPins[i], HIGH);
44
45  }
46  
47  if (! rtc.begin()) {
48    while (1);
49  }
50
51  if (rtc.lostPower())
52  {
53    // following line sets the RTC to the date & time this sketch was compiled
54
55    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
56    // This line sets the
57  RTC with an explicit date & time, for example to set
58    // January 21, 2014
59  at 3am you would call:
60    // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
61
62  }
63  
64}
65
66void loop() {
67
68    int digits[4];
69    int hour;
70
71    int minute;
72    
73    DateTime now = rtc.now();
74
75    // Convert 24
76  -> 12 hour 
77    if (now.hour() > 12) {
78      hour = now.hour() - 12;
79    }
80  else {
81      hour = now.hour();
82    }
83    minute = now.minute();
84
85
86    // Figure out individual digits
87    digits[0] = hour / 10;
88    digits[1]
89  = hour % 10;
90    digits[2] = minute / 10;
91    digits[3] = minute % 10;
92
93
94    for (int i=0; i<=3; i++) {
95      displayNumber(digits[i], i, 5);
96    }
97
98  
99}
100
101void displayNumber(int number, int digit, int duration) {
102
103  if
104  ((number >=0 && number <=9) && (digit >= 0 && digit <=3)) {
105    // Turn on appropriate
106  digit
107    digitalWrite(digitPins[digit], LOW);    
108    // Turn on appropriate
109  segments
110    for (int seg=0; seg<8; seg++) {
111      digitalWrite(segmentPins[seg],
112  bitRead(segmentMap[number], seg));
113    }
114    delay(duration);    
115    //
116  Turn off digit
117    digitalWrite(digitPins[digit], HIGH);    
118  }
119  
120}
121

1#include <Wire.h>
2#include <RTClib.h>
3
4//DP G F E D C B A
5const  byte segmentMap[10] = {
6  B00111111, //0
7  B00000110, //1
8  B01011011,  //2
9  B01001111, //3
10  B01100110, //4
11  B01101101, //5
12  B01111101,  //6
13  B00000111, //7
14  B01111111, //8
15  B01100111  //9 
16};
17
18RTC_DS3231  rtc;
19
20const int segmentPins[8] = {2,3,4,5,6,7,8,9}; // A B C D E F G DP
21const  int digitPins[4] = {10,11,12,13};       //DIG1 DIG2 DIG3 DIG4
22
23void setup()  {
24
25  // Set the segment pins as outputs
26  for (int i=0; i<8; i++) {
27    pinMode(segmentPins[i], OUTPUT);
28    digitalWrite(segmentPins[i], LOW);
29  }
30  
31  // Set the digit pins as outputs
32  for (int i=0; i<4; i++) {
33    pinMode(digitPins[i], OUTPUT);
34    digitalWrite(digitPins[i], HIGH);
35  }
36  
37  if (! rtc.begin()) {
38    while (1);
39  }
40
41  if (rtc.lostPower())  {
42    // following line sets the RTC to the date & time this sketch was compiled
43    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
44    // This line sets the  RTC with an explicit date & time, for example to set
45    // January 21, 2014  at 3am you would call:
46    // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
47  }
48  
49}
50
51void loop() {
52
53    int digits[4];
54    int hour;
55    int minute;
56    
57    DateTime now = rtc.now();
58
59    // Convert 24  -> 12 hour 
60    if (now.hour() > 12) {
61      hour = now.hour() - 12;
62    }  else {
63      hour = now.hour();
64    }
65    minute = now.minute();
66
67    // Figure out individual digits
68    digits[0] = hour / 10;
69    digits[1]  = hour % 10;
70    digits[2] = minute / 10;
71    digits[3] = minute % 10;
72
73    for (int i=0; i<=3; i++) {
74      displayNumber(digits[i], i, 5);
75    }
76  
77}
78
79void displayNumber(int number, int digit, int duration) {
80
81  if  ((number >=0 && number <=9) && (digit >= 0 && digit <=3)) {
82    // Turn on appropriate  digit
83    digitalWrite(digitPins[digit], LOW);    
84    // Turn on appropriate  segments
85    for (int seg=0; seg<8; seg++) {
86      digitalWrite(segmentPins[seg],  bitRead(segmentMap[number], seg));
87    }
88    delay(duration);    
89    //  Turn off digit
90    digitalWrite(digitPins[digit], HIGH);    
91  }
92  
93}
94