Clock using Arduino UNO, 16 x 2 LCD Display, and Switches

1unsigned long seconds;
2int hour = 1; // what hour the program starts  with
3int minute = 0;
4
5
6#include <LiquidCrystal.h>
7LiquidCrystal lcd(12,11,5,4,3,2);
8
9
10const  int pinone = 8; // the pin that the arduino is reading
11const int pintwo = 13;  // the pin that the arduino is reading
12const int pinthree = 7; // the pin that  the arduino is reading
13int state = 0;
14int statetwo = 0;
15int statethree  = 0;
16
17void setup() {
18   // put your setup code here, to run once:
19Serial.begin(9600);
20
21pinMode(pinthree,INPUT);
22
23lcd.begin(16,  2);
24lcd.setCursor (0, 0);
25lcd.print("This is a clock");
26lcd.setCursor  (0, 1);
27lcd.print("Time:");
28seconds = 0;
29
30}
31
32void loop() {
33
34  state = digitalRead(pinone);
35  statetwo = digitalRead(pintwo);
36  statethree  = digitalRead(pinthree);
37  
38  // put your main code here, to run repeatedly:
39Serial.print("Time:  ");
40
41Serial.println(seconds);
42delay(1000); // 1000 milliseconds = 1 second
43seconds=seconds+1;
44
45
46lcd.setCursor(13,1);
47lcd.print(seconds);  // display seconds
48lcd.print("s");  // 1 second passes
49
50
51lcd.setCursor(10,1);
52lcd.print(minute);  // display minutes
53lcd.print(":");
54
55
56lcd.setCursor(7,1);
57lcd.print(hour);  // display hour
58lcd.print(":");
59
60
61
62if(statethree == HIGH){ // When  switch is pressed it will read HIGH
63    
64    hour++; // LEFT BUTTON - add  a hour
65
66    
67    lcd.setCursor(0,0);
68    lcd.print("Adjust Hour      ");
69}
70    else if(state == HIGH){ // When switch is pressed it will read HIGH
71    
72      minute++; //MIDDLE BUTTON - add a minute
73
74      
75      lcd.setCursor(0,0);
76      lcd.print("Adjust Minute   ");
77    }
78
79    
80  else if (statetwo  == HIGH){ // When switch is pressed it will read HIGH
81    
82    lcd.setCursor(0,0);
83    lcd.print("[HOUR][MIN] INFO"); //RIGHT BUTTON - show info 
84  }
85
86
87if  (seconds >= 60){
88  seconds = 0;
89  minute = minute + 1;  // count up to a minute
90  
91
92  
93if (minute >= 60){
94minute=0;
95hour = hour + 1; // count up  to a hour 
96
97
98 
99if (hour == 13){ // clock does not pass 12, after 12,  the next number should be 1
100hour = 1;
101
102
103}
104}
105}
106}
107

1unsigned long seconds;
2int hour = 1; // what hour the program starts
3  with
4int minute = 0;
5
6
7#include <LiquidCrystal.h>
8LiquidCrystal lcd(12,11,5,4,3,2);
9
10
11const
12  int pinone = 8; // the pin that the arduino is reading
13const int pintwo = 13;
14  // the pin that the arduino is reading
15const int pinthree = 7; // the pin that
16  the arduino is reading
17int state = 0;
18int statetwo = 0;
19int statethree
20  = 0;
21
22void setup() {
23   // put your setup code here, to run once:
24Serial.begin(9600);
25
26pinMode(pinthree,INPUT);
27
28lcd.begin(16,
29  2);
30lcd.setCursor (0, 0);
31lcd.print("This is a clock");
32lcd.setCursor
33  (0, 1);
34lcd.print("Time:");
35seconds = 0;
36
37}
38
39void loop() {
40
41
42  state = digitalRead(pinone);
43  statetwo = digitalRead(pintwo);
44  statethree
45  = digitalRead(pinthree);
46  
47  // put your main code here, to run repeatedly:
48Serial.print("Time:
49  ");
50
51Serial.println(seconds);
52delay(1000); // 1000 milliseconds = 1 second
53seconds=seconds+1;
54
55
56lcd.setCursor(13,1);
57lcd.print(seconds);
58  // display seconds
59lcd.print("s");  // 1 second passes
60
61
62lcd.setCursor(10,1);
63lcd.print(minute);
64  // display minutes
65lcd.print(":");
66
67
68lcd.setCursor(7,1);
69lcd.print(hour);
70  // display hour
71lcd.print(":");
72
73
74
75if(statethree == HIGH){ // When
76  switch is pressed it will read HIGH
77    
78    hour++; // LEFT BUTTON - add
79  a hour
80
81    
82    lcd.setCursor(0,0);
83    lcd.print("Adjust Hour      ");
84}
85
86    else if(state == HIGH){ // When switch is pressed it will read HIGH
87    
88
89      minute++; //MIDDLE BUTTON - add a minute
90
91      
92      lcd.setCursor(0,0);
93
94      lcd.print("Adjust Minute   ");
95    }
96
97    
98  else if (statetwo
99  == HIGH){ // When switch is pressed it will read HIGH
100    
101    lcd.setCursor(0,0);
102
103    lcd.print("[HOUR][MIN] INFO"); //RIGHT BUTTON - show info 
104  }
105
106
107if
108  (seconds >= 60){
109  seconds = 0;
110  minute = minute + 1;  // count up to a minute
111
112  
113
114  
115if (minute >= 60){
116minute=0;
117hour = hour + 1; // count up
118  to a hour 
119
120
121 
122if (hour == 13){ // clock does not pass 12, after 12,
123  the next number should be 1
124hour = 1;
125
126
127}
128}
129}
130}
131