TM1637 Digital Clock with time setup and alarm functionality

This project is a prototype I will use in other digital clock projects I have in the works.

Aug 28, 2020

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clock

tm1637

Components and supplies

Arduino Nano R3

Buzzer

TM1637 4 digit display

LilyPad LED Blue (5pcs)

DS1302 RTC module

Project description

Code

Displaying time from RTC module plus time setup and Alarm setup functionality

arduino

This code is reading current time from the RTC module. Then it also allows to update current time and also setup Alarm time. Setup actions are performed using 3 buttons.

1// Mario's Ideas
2// TM1637 Digital Clock with Setup and Alarm Functionality
3
4#include  <Arduino.h>
5#include <TM1637Display.h>
6#include <virtuabotixRTC.h> //
7
8//  RTC module declaration
9// PINS CLK, DAT, RST
10virtuabotixRTC myRTC(A1,A2,A3);
11
12//  Variables to store previous values read off RTC module
13int minutes;
14int hours;
15//  Variables to store the time at which Alarm should go off 
16int Alarm_minutes=05;
17int  Alarm_hours=18;
18uint8_t Blank[] = {0x0};
19
20int POSITION=0;
21
22//Table  to store 4 digits, used in time and Alarm setup procedure
23int digits[3];
24
25int  interval=0;
26
27#define Alarm 9 // Button to switch alarm mode on or off
28#define  Buzer 13
29#define Led 8
30
31
32//Statuses
33boolean Alarm_set=false;
34boolean  Alarm_in_progress=false;
35boolean Setup_on= false;
36
37// 4digit display connection  pins (Digital Pins)
38#define CLK 4
39#define DIO 5
40
41
42// 4 digit display  declaration
43TM1637Display clock(CLK, DIO);
44
45void setup() {
46  
47 attachInterrupt(digitalPinToInterrupt(2),  Press_A_Button,RISING);
48 attachInterrupt(digitalPinToInterrupt(3), Press_B_Button,RISING);
49  pinMode(Alarm, INPUT);
50 pinMode(Buzer, OUTPUT);
51 pinMode(Led, OUTPUT);
52  digitalWrite(Buzer,LOW);
53 clock.setBrightness(0x0f);
54 Serial.begin(9600);
55}
56
57void  Press_A_Button(){
58  if (interval>3){
59    if (Setup_on==false){
60      Setup_on=true;
61      if (Alarm_set==true){
62        digits[0]= (int)Alarm_hours/10;
63        digits[1]=  Alarm_hours-((int)Alarm_hours/10)*10;
64        digits[2]= (int)Alarm_minutes/10;
65        digits[3]= Alarm_minutes-((int)Alarm_minutes/10)*10; 
66      } 
67      else  {
68        digits[0]= (int)myRTC.hours/10;
69        digits[1]= myRTC.hours-((int)myRTC.hours/10)*10;
70        digits[2]= (int)myRTC.minutes/10;
71        digits[3]= myRTC.minutes-((int)myRTC.minutes/10)*10;
72      }
73    }
74    else{
75      POSITION++;
76      if (POSITION==4){
77        if (Alarm_set==true){
78          Alarm_minutes=digits[3]+digits[2]*10;
79          Alarm_hours=digits[1]+digits[0]*10;
80        } 
81        else {
82          myRTC.setDS1302Time( 0, digits[3]+digits[2]*10, digits[1]+digits[0]*10,myRTC.dayofweek,  myRTC.dayofmonth, myRTC.month, myRTC.year);
83          clock.showNumberDec(digits[0],false,1,0);
84          clock.showNumberDec(digits[1],false,1,1);
85          clock.showNumberDec(digits[2],false,1,2);
86         clock.showNumberDec(digits[3],false,1,3);
87        }
88        POSITION=0;
89        Setup_on=false;
90      }
91    }
92  }
93  interval=0;
94}
95
96void  Press_B_Button(){
97  if (interval>3){
98    if(Setup_on){
99      digits[POSITION]=digits[POSITION]+1;
100      if (POSITION==0 and digits[POSITION]==3) digits[POSITION]=0;
101      if (POSITION!=0  and digits[POSITION]==10) digits[POSITION]=0;
102      interval=0;
103    } 
104  }
105  interval=0;
106}
107
108void loop() {  
109  if (digitalRead(Alarm)==HIGH  and Alarm_set==false ){
110    if (interval>30){
111      digitalWrite(Led,HIGH);
112      Alarm_set=true;
113      delay(300);
114    }
115  } else{
116    if (digitalRead(Alarm)==HIGH  and Alarm_set==true){
117      if (interval>30){
118      Alarm_set=false;
119      Alarm_in_progress=false;
120      digitalWrite(Led,LOW);
121      delay(300);
122    }
123   }
124 }
125 myRTC.updateTime();
126  
127 
128 if (Setup_on==true){
129    clock.showNumberDec(digits[0],false,1,0);
130    clock.showNumberDec(digits[1],false,1,1);
131    clock.showNumberDec(digits[2],false,1,2);
132    clock.showNumberDec(digits[3],false,1,3);
133    delay(200);
134    clock.setSegments(Blank,  1,POSITION);  
135    delay(200);
136    clock.showNumberDec(digits[0],false,1,0);
137    clock.showNumberDec(digits[1],false,1,1);
138    clock.showNumberDec(digits[2],false,1,2);
139    clock.showNumberDec(digits[3],false,1,3);
140  }
141 else{
142   if (myRTC.minutes==Alarm_minutes  and myRTC.hours==Alarm_hours and Alarm_set==true and Setup_on==false){
143    Alarm_in_progress=true;
144   }
145
146   if (Alarm_in_progress){
147     digitalWrite(Buzer,HIGH);
148     delay(1000);
149     digitalWrite(Buzer,LOW);
150     delay(1000);
151   } 
152   
153 if (myRTC.minutes!=minutes){
154    
155   clock.showNumberDecEx((int)myRTC.hours/10*1000+(myRTC.hours-((int)myRTC.hours/10)*10)*100+  (int)myRTC.minutes/10*10+myRTC.minutes-((int)myRTC.minutes/10)*10, (0x80 >> 1),  true);
156
157   minutes=myRTC.minutes;
158   hours=myRTC.hours;
159   
160   }
161  }
162 if (interval<200) interval++;
163}

// Mario's Ideas
// TM1637 Digital Clock with Setup and Alarm Functionality

#include  <Arduino.h>
#include <TM1637Display.h>
#include <virtuabotixRTC.h> //

//  RTC module declaration
// PINS CLK, DAT, RST
virtuabotixRTC myRTC(A1,A2,A3);

//  Variables to store previous values read off RTC module
int minutes;
int hours;
//  Variables to store the time at which Alarm should go off 
int Alarm_minutes=05;
int  Alarm_hours=18;
uint8_t Blank[] = {0x0};

int POSITION=0;

//Table  to store 4 digits, used in time and Alarm setup procedure
int digits[3];

int  interval=0;

#define Alarm 9 // Button to switch alarm mode on or off
#define  Buzer 13
#define Led 8


//Statuses
boolean Alarm_set=false;
boolean  Alarm_in_progress=false;
boolean Setup_on= false;

// 4digit display connection  pins (Digital Pins)
#define CLK 4
#define DIO 5


// 4 digit display  declaration
TM1637Display clock(CLK, DIO);

void setup() {
  
 attachInterrupt(digitalPinToInterrupt(2),  Press_A_Button,RISING);
 attachInterrupt(digitalPinToInterrupt(3), Press_B_Button,RISING);
  pinMode(Alarm, INPUT);
 pinMode(Buzer, OUTPUT);
 pinMode(Led, OUTPUT);
  digitalWrite(Buzer,LOW);
 clock.setBrightness(0x0f);
 Serial.begin(9600);
}

void  Press_A_Button(){
  if (interval>3){
    if (Setup_on==false){
      Setup_on=true;
      if (Alarm_set==true){
        digits[0]= (int)Alarm_hours/10;
        digits[1]=  Alarm_hours-((int)Alarm_hours/10)*10;
        digits[2]= (int)Alarm_minutes/10;
        digits[3]= Alarm_minutes-((int)Alarm_minutes/10)*10; 
      } 
      else  {
        digits[0]= (int)myRTC.hours/10;
        digits[1]= myRTC.hours-((int)myRTC.hours/10)*10;
        digits[2]= (int)myRTC.minutes/10;
        digits[3]= myRTC.minutes-((int)myRTC.minutes/10)*10;
      }
    }
    else{
      POSITION++;
      if (POSITION==4){
        if (Alarm_set==true){
          Alarm_minutes=digits[3]+digits[2]*10;
          Alarm_hours=digits[1]+digits[0]*10;
        } 
        else {
          myRTC.setDS1302Time( 0, digits[3]+digits[2]*10, digits[1]+digits[0]*10,myRTC.dayofweek,  myRTC.dayofmonth, myRTC.month, myRTC.year);
          clock.showNumberDec(digits[0],false,1,0);
          clock.showNumberDec(digits[1],false,1,1);
          clock.showNumberDec(digits[2],false,1,2);
         clock.showNumberDec(digits[3],false,1,3);
        }
        POSITION=0;
        Setup_on=false;
      }
    }
  }
  interval=0;
}

void  Press_B_Button(){
  if (interval>3){
    if(Setup_on){
      digits[POSITION]=digits[POSITION]+1;
      if (POSITION==0 and digits[POSITION]==3) digits[POSITION]=0;
      if (POSITION!=0  and digits[POSITION]==10) digits[POSITION]=0;
      interval=0;
    } 
  }
  interval=0;
}

void loop() {  
  if (digitalRead(Alarm)==HIGH  and Alarm_set==false ){
    if (interval>30){
      digitalWrite(Led,HIGH);
      Alarm_set=true;
      delay(300);
    }
  } else{
    if (digitalRead(Alarm)==HIGH  and Alarm_set==true){
      if (interval>30){
      Alarm_set=false;
      Alarm_in_progress=false;
      digitalWrite(Led,LOW);
      delay(300);
    }
   }
 }
 myRTC.updateTime();
  
 
 if (Setup_on==true){
    clock.showNumberDec(digits[0],false,1,0);
    clock.showNumberDec(digits[1],false,1,1);
    clock.showNumberDec(digits[2],false,1,2);
    clock.showNumberDec(digits[3],false,1,3);
    delay(200);
    clock.setSegments(Blank,  1,POSITION);  
    delay(200);
    clock.showNumberDec(digits[0],false,1,0);
    clock.showNumberDec(digits[1],false,1,1);
    clock.showNumberDec(digits[2],false,1,2);
    clock.showNumberDec(digits[3],false,1,3);
  }
 else{
   if (myRTC.minutes==Alarm_minutes  and myRTC.hours==Alarm_hours and Alarm_set==true and Setup_on==false){
    Alarm_in_progress=true;
   }

   if (Alarm_in_progress){
     digitalWrite(Buzer,HIGH);
     delay(1000);
     digitalWrite(Buzer,LOW);
     delay(1000);
   } 
   
 if (myRTC.minutes!=minutes){
    
   clock.showNumberDecEx((int)myRTC.hours/10*1000+(myRTC.hours-((int)myRTC.hours/10)*10)*100+  (int)myRTC.minutes/10*10+myRTC.minutes-((int)myRTC.minutes/10)*10, (0x80 >> 1),  true);

   minutes=myRTC.minutes;
   hours=myRTC.hours;
   
   }
  }
 if (interval<200) interval++;
}

Displaying time from RTC module plus time setup and Alarm setup functionality

arduino

This code is reading current time from the RTC module. Then it also allows to update current time and also setup Alarm time. Setup actions are performed using 3 buttons.

1// Mario's Ideas
2// TM1637 Digital Clock with Setup and Alarm Functionality
3
4#include
5  <Arduino.h>
6#include <TM1637Display.h>
7#include <virtuabotixRTC.h> //
8
9//
10  RTC module declaration
11// PINS CLK, DAT, RST
12virtuabotixRTC myRTC(A1,A2,A3);
13
14//
15  Variables to store previous values read off RTC module
16int minutes;
17int hours;
18//
19  Variables to store the time at which Alarm should go off 
20int Alarm_minutes=05;
21int
22  Alarm_hours=18;
23uint8_t Blank[] = {0x0};
24
25int POSITION=0;
26
27//Table
28  to store 4 digits, used in time and Alarm setup procedure
29int digits[3];
30
31int
32  interval=0;
33
34#define Alarm 9 // Button to switch alarm mode on or off
35#define
36  Buzer 13
37#define Led 8
38
39
40//Statuses
41boolean Alarm_set=false;
42boolean
43  Alarm_in_progress=false;
44boolean Setup_on= false;
45
46// 4digit display connection
47  pins (Digital Pins)
48#define CLK 4
49#define DIO 5
50
51
52// 4 digit display
53  declaration
54TM1637Display clock(CLK, DIO);
55
56void setup() {
57  
58 attachInterrupt(digitalPinToInterrupt(2),
59  Press_A_Button,RISING);
60 attachInterrupt(digitalPinToInterrupt(3), Press_B_Button,RISING);
61
62  pinMode(Alarm, INPUT);
63 pinMode(Buzer, OUTPUT);
64 pinMode(Led, OUTPUT);
65
66  digitalWrite(Buzer,LOW);
67 clock.setBrightness(0x0f);
68 Serial.begin(9600);
69}
70
71void
72  Press_A_Button(){
73  if (interval>3){
74    if (Setup_on==false){
75      Setup_on=true;
76
77      if (Alarm_set==true){
78        digits[0]= (int)Alarm_hours/10;
79        digits[1]=
80  Alarm_hours-((int)Alarm_hours/10)*10;
81        digits[2]= (int)Alarm_minutes/10;
82
83        digits[3]= Alarm_minutes-((int)Alarm_minutes/10)*10; 
84      } 
85      else
86  {
87        digits[0]= (int)myRTC.hours/10;
88        digits[1]= myRTC.hours-((int)myRTC.hours/10)*10;
89
90        digits[2]= (int)myRTC.minutes/10;
91        digits[3]= myRTC.minutes-((int)myRTC.minutes/10)*10;
92
93      }
94    }
95    else{
96      POSITION++;
97      if (POSITION==4){
98
99        if (Alarm_set==true){
100          Alarm_minutes=digits[3]+digits[2]*10;
101
102          Alarm_hours=digits[1]+digits[0]*10;
103        } 
104        else {
105
106          myRTC.setDS1302Time( 0, digits[3]+digits[2]*10, digits[1]+digits[0]*10,myRTC.dayofweek,
107  myRTC.dayofmonth, myRTC.month, myRTC.year);
108          clock.showNumberDec(digits[0],false,1,0);
109
110          clock.showNumberDec(digits[1],false,1,1);
111          clock.showNumberDec(digits[2],false,1,2);
112
113         clock.showNumberDec(digits[3],false,1,3);
114        }
115        POSITION=0;
116
117        Setup_on=false;
118      }
119    }
120  }
121  interval=0;
122}
123
124void
125  Press_B_Button(){
126  if (interval>3){
127    if(Setup_on){
128      digits[POSITION]=digits[POSITION]+1;
129
130      if (POSITION==0 and digits[POSITION]==3) digits[POSITION]=0;
131      if (POSITION!=0
132  and digits[POSITION]==10) digits[POSITION]=0;
133      interval=0;
134    } 
135
136  }
137  interval=0;
138}
139
140void loop() {  
141  if (digitalRead(Alarm)==HIGH
142  and Alarm_set==false ){
143    if (interval>30){
144      digitalWrite(Led,HIGH);
145
146      Alarm_set=true;
147      delay(300);
148    }
149  } else{
150    if (digitalRead(Alarm)==HIGH
151  and Alarm_set==true){
152      if (interval>30){
153      Alarm_set=false;
154      Alarm_in_progress=false;
155
156      digitalWrite(Led,LOW);
157      delay(300);
158    }
159   }
160 }
161 myRTC.updateTime();
162
163  
164 
165 if (Setup_on==true){
166    clock.showNumberDec(digits[0],false,1,0);
167
168    clock.showNumberDec(digits[1],false,1,1);
169    clock.showNumberDec(digits[2],false,1,2);
170
171    clock.showNumberDec(digits[3],false,1,3);
172    delay(200);
173    clock.setSegments(Blank,
174  1,POSITION);  
175    delay(200);
176    clock.showNumberDec(digits[0],false,1,0);
177
178    clock.showNumberDec(digits[1],false,1,1);
179    clock.showNumberDec(digits[2],false,1,2);
180
181    clock.showNumberDec(digits[3],false,1,3);
182  }
183 else{
184   if (myRTC.minutes==Alarm_minutes
185  and myRTC.hours==Alarm_hours and Alarm_set==true and Setup_on==false){
186    Alarm_in_progress=true;
187
188   }
189
190   if (Alarm_in_progress){
191     digitalWrite(Buzer,HIGH);
192     delay(1000);
193
194     digitalWrite(Buzer,LOW);
195     delay(1000);
196   } 
197   
198 if (myRTC.minutes!=minutes){
199
200    
201   clock.showNumberDecEx((int)myRTC.hours/10*1000+(myRTC.hours-((int)myRTC.hours/10)*10)*100+
202  (int)myRTC.minutes/10*10+myRTC.minutes-((int)myRTC.minutes/10)*10, (0x80 >> 1),
203  true);
204
205   minutes=myRTC.minutes;
206   hours=myRTC.hours;
207   
208   }
209
210  }
211 if (interval<200) interval++;
212}

// Mario's Ideas
// TM1637 Digital Clock with Setup and Alarm Functionality

#include
  <Arduino.h>
#include <TM1637Display.h>
#include <virtuabotixRTC.h> //

//
  RTC module declaration
// PINS CLK, DAT, RST
virtuabotixRTC myRTC(A1,A2,A3);

//
  Variables to store previous values read off RTC module
int minutes;
int hours;
//
  Variables to store the time at which Alarm should go off 
int Alarm_minutes=05;
int
  Alarm_hours=18;
uint8_t Blank[] = {0x0};

int POSITION=0;

//Table
  to store 4 digits, used in time and Alarm setup procedure
int digits[3];

int
  interval=0;

#define Alarm 9 // Button to switch alarm mode on or off
#define
  Buzer 13
#define Led 8


//Statuses
boolean Alarm_set=false;
boolean
  Alarm_in_progress=false;
boolean Setup_on= false;

// 4digit display connection
  pins (Digital Pins)
#define CLK 4
#define DIO 5


// 4 digit display
  declaration
TM1637Display clock(CLK, DIO);

void setup() {
  
 attachInterrupt(digitalPinToInterrupt(2),
  Press_A_Button,RISING);
 attachInterrupt(digitalPinToInterrupt(3), Press_B_Button,RISING);

  pinMode(Alarm, INPUT);
 pinMode(Buzer, OUTPUT);
 pinMode(Led, OUTPUT);

  digitalWrite(Buzer,LOW);
 clock.setBrightness(0x0f);
 Serial.begin(9600);
}

void
  Press_A_Button(){
  if (interval>3){
    if (Setup_on==false){
      Setup_on=true;

      if (Alarm_set==true){
        digits[0]= (int)Alarm_hours/10;
        digits[1]=
  Alarm_hours-((int)Alarm_hours/10)*10;
        digits[2]= (int)Alarm_minutes/10;

        digits[3]= Alarm_minutes-((int)Alarm_minutes/10)*10; 
      } 
      else
  {
        digits[0]= (int)myRTC.hours/10;
        digits[1]= myRTC.hours-((int)myRTC.hours/10)*10;

        digits[2]= (int)myRTC.minutes/10;
        digits[3]= myRTC.minutes-((int)myRTC.minutes/10)*10;

      }
    }
    else{
      POSITION++;
      if (POSITION==4){

        if (Alarm_set==true){
          Alarm_minutes=digits[3]+digits[2]*10;

          Alarm_hours=digits[1]+digits[0]*10;
        } 
        else {

          myRTC.setDS1302Time( 0, digits[3]+digits[2]*10, digits[1]+digits[0]*10,myRTC.dayofweek,
  myRTC.dayofmonth, myRTC.month, myRTC.year);
          clock.showNumberDec(digits[0],false,1,0);

          clock.showNumberDec(digits[1],false,1,1);
          clock.showNumberDec(digits[2],false,1,2);

         clock.showNumberDec(digits[3],false,1,3);
        }
        POSITION=0;

        Setup_on=false;
      }
    }
  }
  interval=0;
}

void
  Press_B_Button(){
  if (interval>3){
    if(Setup_on){
      digits[POSITION]=digits[POSITION]+1;

      if (POSITION==0 and digits[POSITION]==3) digits[POSITION]=0;
      if (POSITION!=0
  and digits[POSITION]==10) digits[POSITION]=0;
      interval=0;
    } 

  }
  interval=0;
}

void loop() {  
  if (digitalRead(Alarm)==HIGH
  and Alarm_set==false ){
    if (interval>30){
      digitalWrite(Led,HIGH);

      Alarm_set=true;
      delay(300);
    }
  } else{
    if (digitalRead(Alarm)==HIGH
  and Alarm_set==true){
      if (interval>30){
      Alarm_set=false;
      Alarm_in_progress=false;

      digitalWrite(Led,LOW);
      delay(300);
    }
   }
 }
 myRTC.updateTime();

  
 
 if (Setup_on==true){
    clock.showNumberDec(digits[0],false,1,0);

    clock.showNumberDec(digits[1],false,1,1);
    clock.showNumberDec(digits[2],false,1,2);

    clock.showNumberDec(digits[3],false,1,3);
    delay(200);
    clock.setSegments(Blank,
  1,POSITION);  
    delay(200);
    clock.showNumberDec(digits[0],false,1,0);

    clock.showNumberDec(digits[1],false,1,1);
    clock.showNumberDec(digits[2],false,1,2);

    clock.showNumberDec(digits[3],false,1,3);
  }
 else{
   if (myRTC.minutes==Alarm_minutes
  and myRTC.hours==Alarm_hours and Alarm_set==true and Setup_on==false){
    Alarm_in_progress=true;

   }

   if (Alarm_in_progress){
     digitalWrite(Buzer,HIGH);
     delay(1000);

     digitalWrite(Buzer,LOW);
     delay(1000);
   } 
   
 if (myRTC.minutes!=minutes){

    
   clock.showNumberDecEx((int)myRTC.hours/10*1000+(myRTC.hours-((int)myRTC.hours/10)*10)*100+
  (int)myRTC.minutes/10*10+myRTC.minutes-((int)myRTC.minutes/10)*10, (0x80 >> 1),
  true);

   minutes=myRTC.minutes;
   hours=myRTC.hours;
   
   }

  }
 if (interval<200) interval++;
}

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