Arduino Alarm Clock Project

Snap together 3D-printed case for an Arduino alarm clock!

Sep 7, 2018

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31064 views

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14 respects

desk

clock

lcd

Components and supplies

Jumper wires (generic)

Standard LCD - 16x2 White on Blue

Potentiometer (10K)

Arduino UNO

Thermistor

Buzzer

DS3231 RTC Module

Tools and machines

3D Printer (generic)

Project description

Code

Arduino Alarm Clock Project

c_cpp

Displays time, date, temperature. Has the ability to set alarm time.

1/*
2Name: Christopher S.
3Date: 8/26/2018
4Project: Use DS3231 RTC
5  to print Time, Date.. Use Thermistor for temp. Ability to set Alarm.
6*/
7
8//-----------------------------------------------------------------------------
9
10//
11  Define variables.
12
13#include <DS3231.h>   //Library for RTC
14
15#include
16  <Wire.h>   //Allows comunication with TWI (Two Wire Interface)
17
18#include <LiquidCrystal.h>
19  //Used for DS3231 and thermister
20
21LiquidCrystal lcd(2, 3, 4, 5, 6, 7);  //Pins
22  used by the LCD
23
24DS3231  rtc(SDA, SCL);
25
26Time  t;
27
28#define buz
29  11
30
31int tempPin = 0;
32
33int Hor;
34
35int Min;
36
37int Sec;
38
39int
40  tempC;
41int tempF;
42
43int tempCDS3231;
44int tempFDS3231;
45
46
47//-------------------------------------------------------------------------
48//
49  Used to fix Date, Time, Day of Week
50
51  // Uncomment to adjust. Be sure to
52  // back once fixed.
53
54  //rtc.setDOW(WEDNESDAY);     // Set Day-of-Week to
55  SUNDAY
56
57  //rtc.setTime(01, 33, 00);     // Set the time to 12:00:00 (24hr
58  format)
59
60  //rtc.setDate(23, 8, 2018);   // Set the date to August 8th, 2018
61
62//--------------------------------------------------------------------------
63
64
65void
66  setup()
67
68{  
69
70  Wire.begin();
71
72  rtc.begin();
73
74  Serial.begin(9600);
75
76
77  pinMode(buz, OUTPUT);
78
79  lcd.begin(16,2);     
80
81  lcd.setCursor(0,0);
82
83
84  t = rtc.getTime();
85
86  Hor = t.hour;
87
88  Min = t.min;
89
90  Sec = t.sec;
91
92
93
94}
95
96
97//---------------------------------------------------------------------
98
99
100void
101  loop()
102
103{
104  int tempReading = analogRead(tempPin);
105  // This is OK
106
107  double  tempK = log(10000.0 * ((1024.0 / tempReading - 1)));
108  tempK = 1 /
109  (0.001129148 + (0.000234125 + (0.0000000876741 * tempK * tempK )) * tempK );       //
110  Temp Kelvin
111  int tempC = tempK - 273.15;            // Convert Kelvin to Celcius
112
113  int tempF = (tempC * 9.0)/ 5.0 + 32.0; // Convert Celcius to Fahrenheit
114
115//-------------------------------------------------------------------------------------------
116//Can
117  change the ABOVE tempC and tempF "int" to "float" this can give you temperatures
118  with two decimal points.
119//Can also use "lcd.print(tempF, 1);" BELOW to print
120  with one decimal place or "lcd.print(tempF, 0);" // print without decimal place
121//-------------------------------------------------------------------------------------------
122
123  
124lcd.setCursor(0,0);  //Top line of the LCD
125lcd.print("    ");
126lcd.print(rtc.getTimeStr());
127lcd.print("
128    ");
129lcd.setCursor(0,1);
130lcd.print("      ");
131lcd.print(rtc.getDateStr());
132
133
134//----------------------------------------------------------
135
136
137  lcd.setCursor(0,1);  //Second line of the LCD
138
139tempFDS3231 = (tempCDS3231
140  * 1.8) + 32.0; // Convert C to F
141tempCDS3231 = (rtc.getTemp());
142
143 lcd.setCursor(0,1);
144
145  lcd.print(tempF);
146 lcd.print((char)223); //This creates a Degree symbol
147 lcd.print("F
148  ");
149 lcd.print(rtc.getDateStr());
150
151
152//--------------------------------------------------------------------------
153
154
155  t = rtc.getTime();
156
157  Hor = t.hour;
158
159  Min = t.min;
160
161  Sec =
162  t.sec;
163
164
165//-------------------------------------------------------------------------------------------
166//Use
167  the BELOW "if" statement to set your desired alarm time
168 if( Hor == 10 &&  (Min
169  == 00 || Min == 00)) //Comparing the current time with the Alarm time
170//-------------------------------------------------------------------------------------------
171
172{
173Buzzer();
174
175Buzzer();
176
177lcd.clear();
178
179lcd.print("Alarm
180  ON");
181
182lcd.setCursor(0,1);
183
184lcd.print("Wake Up!!");
185
186Buzzer();
187
188Buzzer();
189
190
191}
192
193  delay(1000); 
194
195}
196
197
198
199
200void Buzzer()
201
202{
203
204digitalWrite(buz,HIGH);
205
206delay(500);
207
208digitalWrite(buz,
209  LOW);
210
211delay(500);
212
213
214} 
215

/*
Name: Christopher S.
Date: 8/26/2018
Project: Use DS3231 RTC
  to print Time, Date.. Use Thermistor for temp. Ability to set Alarm.
*/

//-----------------------------------------------------------------------------

//
  Define variables.

#include <DS3231.h>   //Library for RTC

#include
  <Wire.h>   //Allows comunication with TWI (Two Wire Interface)

#include <LiquidCrystal.h>
  //Used for DS3231 and thermister

LiquidCrystal lcd(2, 3, 4, 5, 6, 7);  //Pins
  used by the LCD

DS3231  rtc(SDA, SCL);

Time  t;

#define buz
  11

int tempPin = 0;

int Hor;

int Min;

int Sec;

int
  tempC;
int tempF;

int tempCDS3231;
int tempFDS3231;


//-------------------------------------------------------------------------
//
  Used to fix Date, Time, Day of Week

  // Uncomment to adjust. Be sure to
  // back once fixed.

  //rtc.setDOW(WEDNESDAY);     // Set Day-of-Week to
  SUNDAY

  //rtc.setTime(01, 33, 00);     // Set the time to 12:00:00 (24hr
  format)

  //rtc.setDate(23, 8, 2018);   // Set the date to August 8th, 2018

//--------------------------------------------------------------------------


void
  setup()

{  

  Wire.begin();

  rtc.begin();

  Serial.begin(9600);


  pinMode(buz, OUTPUT);

  lcd.begin(16,2);     

  lcd.setCursor(0,0);


  t = rtc.getTime();

  Hor = t.hour;

  Min = t.min;

  Sec = t.sec;



}


//---------------------------------------------------------------------


void
  loop()

{
  int tempReading = analogRead(tempPin);
  // This is OK

  double  tempK = log(10000.0 * ((1024.0 / tempReading - 1)));
  tempK = 1 /
  (0.001129148 + (0.000234125 + (0.0000000876741 * tempK * tempK )) * tempK );       //
  Temp Kelvin
  int tempC = tempK - 273.15;            // Convert Kelvin to Celcius

  int tempF = (tempC * 9.0)/ 5.0 + 32.0; // Convert Celcius to Fahrenheit

//-------------------------------------------------------------------------------------------
//Can
  change the ABOVE tempC and tempF "int" to "float" this can give you temperatures
  with two decimal points.
//Can also use "lcd.print(tempF, 1);" BELOW to print
  with one decimal place or "lcd.print(tempF, 0);" // print without decimal place
//-------------------------------------------------------------------------------------------

  
lcd.setCursor(0,0);  //Top line of the LCD
lcd.print("    ");
lcd.print(rtc.getTimeStr());
lcd.print("
    ");
lcd.setCursor(0,1);
lcd.print("      ");
lcd.print(rtc.getDateStr());


//----------------------------------------------------------


  lcd.setCursor(0,1);  //Second line of the LCD

tempFDS3231 = (tempCDS3231
  * 1.8) + 32.0; // Convert C to F
tempCDS3231 = (rtc.getTemp());

 lcd.setCursor(0,1);

  lcd.print(tempF);
 lcd.print((char)223); //This creates a Degree symbol
 lcd.print("F
  ");
 lcd.print(rtc.getDateStr());


//--------------------------------------------------------------------------


  t = rtc.getTime();

  Hor = t.hour;

  Min = t.min;

  Sec =
  t.sec;


//-------------------------------------------------------------------------------------------
//Use
  the BELOW "if" statement to set your desired alarm time
 if( Hor == 10 &&  (Min
  == 00 || Min == 00)) //Comparing the current time with the Alarm time
//-------------------------------------------------------------------------------------------

{
Buzzer();

Buzzer();

lcd.clear();

lcd.print("Alarm
  ON");

lcd.setCursor(0,1);

lcd.print("Wake Up!!");

Buzzer();

Buzzer();


}

  delay(1000); 

}




void Buzzer()

{

digitalWrite(buz,HIGH);

delay(500);

digitalWrite(buz,
  LOW);

delay(500);


}

Arduino Alarm Clock Project

c_cpp

Displays time, date, temperature. Has the ability to set alarm time.

1/*
2Name: Christopher S.
3Date: 8/26/2018
4Project: Use DS3231 RTC  to print Time, Date.. Use Thermistor for temp. Ability to set Alarm.
5*/
6
7//-----------------------------------------------------------------------------
8
9//  Define variables.
10
11#include <DS3231.h>   //Library for RTC
12
13#include  <Wire.h>   //Allows comunication with TWI (Two Wire Interface)
14
15#include <LiquidCrystal.h>  //Used for DS3231 and thermister
16
17LiquidCrystal lcd(2, 3, 4, 5, 6, 7);  //Pins  used by the LCD
18
19DS3231  rtc(SDA, SCL);
20
21Time  t;
22
23#define buz  11
24
25int tempPin = 0;
26
27int Hor;
28
29int Min;
30
31int Sec;
32
33int  tempC;
34int tempF;
35
36int tempCDS3231;
37int tempFDS3231;
38
39
40//-------------------------------------------------------------------------
41//  Used to fix Date, Time, Day of Week
42
43  // Uncomment to adjust. Be sure to  // back once fixed.
44
45  //rtc.setDOW(WEDNESDAY);     // Set Day-of-Week to  SUNDAY
46
47  //rtc.setTime(01, 33, 00);     // Set the time to 12:00:00 (24hr  format)
48
49  //rtc.setDate(23, 8, 2018);   // Set the date to August 8th, 2018
50
51//--------------------------------------------------------------------------
52
53
54void  setup()
55
56{  
57
58  Wire.begin();
59
60  rtc.begin();
61
62  Serial.begin(9600);
63
64  pinMode(buz, OUTPUT);
65
66  lcd.begin(16,2);     
67
68  lcd.setCursor(0,0);
69
70  t = rtc.getTime();
71
72  Hor = t.hour;
73
74  Min = t.min;
75
76  Sec = t.sec;
77
78
79
80}
81
82
83//---------------------------------------------------------------------
84
85
86void  loop()
87
88{
89  int tempReading = analogRead(tempPin);
90  // This is OK
91  double  tempK = log(10000.0 * ((1024.0 / tempReading - 1)));
92  tempK = 1 /  (0.001129148 + (0.000234125 + (0.0000000876741 * tempK * tempK )) * tempK );       //  Temp Kelvin
93  int tempC = tempK - 273.15;            // Convert Kelvin to Celcius
94  int tempF = (tempC * 9.0)/ 5.0 + 32.0; // Convert Celcius to Fahrenheit
95
96//-------------------------------------------------------------------------------------------
97//Can  change the ABOVE tempC and tempF "int" to "float" this can give you temperatures  with two decimal points.
98//Can also use "lcd.print(tempF, 1);" BELOW to print  with one decimal place or "lcd.print(tempF, 0);" // print without decimal place
99//-------------------------------------------------------------------------------------------
100  
101lcd.setCursor(0,0);  //Top line of the LCD
102lcd.print("    ");
103lcd.print(rtc.getTimeStr());
104lcd.print("    ");
105lcd.setCursor(0,1);
106lcd.print("      ");
107lcd.print(rtc.getDateStr());
108
109
110//----------------------------------------------------------
111
112  lcd.setCursor(0,1);  //Second line of the LCD
113
114tempFDS3231 = (tempCDS3231  * 1.8) + 32.0; // Convert C to F
115tempCDS3231 = (rtc.getTemp());
116
117 lcd.setCursor(0,1);
118  lcd.print(tempF);
119 lcd.print((char)223); //This creates a Degree symbol
120 lcd.print("F  ");
121 lcd.print(rtc.getDateStr());
122
123
124//--------------------------------------------------------------------------
125
126  t = rtc.getTime();
127
128  Hor = t.hour;
129
130  Min = t.min;
131
132  Sec =  t.sec;
133
134
135//-------------------------------------------------------------------------------------------
136//Use  the BELOW "if" statement to set your desired alarm time
137 if( Hor == 10 &&  (Min  == 00 || Min == 00)) //Comparing the current time with the Alarm time
138//-------------------------------------------------------------------------------------------
139
140{
141Buzzer();
142
143Buzzer();
144
145lcd.clear();
146
147lcd.print("Alarm  ON");
148
149lcd.setCursor(0,1);
150
151lcd.print("Wake Up!!");
152
153Buzzer();
154
155Buzzer();
156
157
158}
159  delay(1000); 
160
161}
162
163
164
165
166void Buzzer()
167
168{
169
170digitalWrite(buz,HIGH);
171
172delay(500);
173
174digitalWrite(buz,  LOW);
175
176delay(500);
177
178
179} 
180

/*
Name: Christopher S.
Date: 8/26/2018
Project: Use DS3231 RTC  to print Time, Date.. Use Thermistor for temp. Ability to set Alarm.
*/

//-----------------------------------------------------------------------------

//  Define variables.

#include <DS3231.h>   //Library for RTC

#include  <Wire.h>   //Allows comunication with TWI (Two Wire Interface)

#include <LiquidCrystal.h>  //Used for DS3231 and thermister

LiquidCrystal lcd(2, 3, 4, 5, 6, 7);  //Pins  used by the LCD

DS3231  rtc(SDA, SCL);

Time  t;

#define buz  11

int tempPin = 0;

int Hor;

int Min;

int Sec;

int  tempC;
int tempF;

int tempCDS3231;
int tempFDS3231;


//-------------------------------------------------------------------------
//  Used to fix Date, Time, Day of Week

  // Uncomment to adjust. Be sure to  // back once fixed.

  //rtc.setDOW(WEDNESDAY);     // Set Day-of-Week to  SUNDAY

  //rtc.setTime(01, 33, 00);     // Set the time to 12:00:00 (24hr  format)

  //rtc.setDate(23, 8, 2018);   // Set the date to August 8th, 2018

//--------------------------------------------------------------------------


void  setup()

{  

  Wire.begin();

  rtc.begin();

  Serial.begin(9600);

  pinMode(buz, OUTPUT);

  lcd.begin(16,2);     

  lcd.setCursor(0,0);

  t = rtc.getTime();

  Hor = t.hour;

  Min = t.min;

  Sec = t.sec;



}


//---------------------------------------------------------------------


void  loop()

{
  int tempReading = analogRead(tempPin);
  // This is OK
  double  tempK = log(10000.0 * ((1024.0 / tempReading - 1)));
  tempK = 1 /  (0.001129148 + (0.000234125 + (0.0000000876741 * tempK * tempK )) * tempK );       //  Temp Kelvin
  int tempC = tempK - 273.15;            // Convert Kelvin to Celcius
  int tempF = (tempC * 9.0)/ 5.0 + 32.0; // Convert Celcius to Fahrenheit

//-------------------------------------------------------------------------------------------
//Can  change the ABOVE tempC and tempF "int" to "float" this can give you temperatures  with two decimal points.
//Can also use "lcd.print(tempF, 1);" BELOW to print  with one decimal place or "lcd.print(tempF, 0);" // print without decimal place
//-------------------------------------------------------------------------------------------
  
lcd.setCursor(0,0);  //Top line of the LCD
lcd.print("    ");
lcd.print(rtc.getTimeStr());
lcd.print("    ");
lcd.setCursor(0,1);
lcd.print("      ");
lcd.print(rtc.getDateStr());


//----------------------------------------------------------

  lcd.setCursor(0,1);  //Second line of the LCD

tempFDS3231 = (tempCDS3231  * 1.8) + 32.0; // Convert C to F
tempCDS3231 = (rtc.getTemp());

 lcd.setCursor(0,1);
  lcd.print(tempF);
 lcd.print((char)223); //This creates a Degree symbol
 lcd.print("F  ");
 lcd.print(rtc.getDateStr());


//--------------------------------------------------------------------------

  t = rtc.getTime();

  Hor = t.hour;

  Min = t.min;

  Sec =  t.sec;


//-------------------------------------------------------------------------------------------
//Use  the BELOW "if" statement to set your desired alarm time
 if( Hor == 10 &&  (Min  == 00 || Min == 00)) //Comparing the current time with the Alarm time
//-------------------------------------------------------------------------------------------

{
Buzzer();

Buzzer();

lcd.clear();

lcd.print("Alarm  ON");

lcd.setCursor(0,1);

lcd.print("Wake Up!!");

Buzzer();

Buzzer();


}
  delay(1000); 

}




void Buzzer()

{

digitalWrite(buz,HIGH);

delay(500);

digitalWrite(buz,  LOW);

delay(500);


}

Downloadable files

Ali Hamza Alarm Clock Schematic

Documentation

Button

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Thingiverse

https://www.thingiverse.com/thing:3079571/zip

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Thingiverse

https://www.thingiverse.com/thing:3079571/zip

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Comments

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Anonymous user

2 years ago

How to insert a switch for setting the alarm ?

Anonymous user

2 years ago

I do not see where to connect the thermistor and what type it is. Hot end on 3d printers use 100Kohms, and I have found 10K (black drop) and round thermistor of vrious values (10 to 500 ohms). The photo looks like the black drop 10Kohms but I do not know where to connect it.

Anonymous user

4 years ago

How to insert a switch for setting the alarm ?

Anonymous user

5 years ago

Anonymous user

5 years ago

Tried completing the project, but found the following error when compiled: arduino_alarm_clock_project:19:21: error: no matching function for call to 'DS3231::DS3231(const uint8_t&, const uint8_t&)' DS3231 rtc(SDA, SCL); ^ In file included from C:\\Users\\Smaragdine\\Downloads\\arduino_alarm_clock_project\\arduino_alarm_clock_project.ino:11:0: C:\\Users\\Smaragdine\\Documents\\Arduino\\libraries\\DS3231/DS3231.h:64:3: note: candidate: DS3231::DS3231() DS3231(); ^~~~~~ C:\\Users\\Smaragdine\\Documents\\Arduino\\libraries\\DS3231/DS3231.h:64:3: note: candidate expects 0 arguments, 2 provided C:\\Users\\Smaragdine\\Documents\\Arduino\\libraries\\DS3231/DS3231.h:60:7: note: candidate: constexpr DS3231::DS3231(const DS3231&) class DS3231 { ^~~~~~ C:\\Users\\Smaragdine\\Documents\\Arduino\\libraries\\DS3231/DS3231.h:60:7: note: candidate expects 1 argument, 2 provided C:\\Users\\Smaragdine\\Documents\\Arduino\\libraries\\DS3231/DS3231.h:60:7: note: candidate: constexpr DS3231::DS3231(DS3231&&) C:\\Users\\Smaragdine\\Documents\\Arduino\\libraries\\DS3231/DS3231.h:60:7: note: candidate expects 1 argument, 2 provided arduino_alarm_clock_project:21:1: error: 'Time' does not name a type; did you mean 'Wire'? Time t; ^~~~ Wire C:\\Users\\Smaragdine\\Downloads\\arduino_alarm_clock_project\\arduino_alarm_clock_project.ino: In function 'void setup()': arduino_alarm_clock_project:60:7: error: 'class DS3231' has no member named 'begin' rtc.begin(); ^~~~~ arduino_alarm_clock_project:70:2: error: 't' was not declared in this scope t = rtc.getTime(); ^ arduino_alarm_clock_project:70:10: error: 'class DS3231' has no member named 'getTime'; did you mean 'getA1Time'? t = rtc.getTime(); ^~~~~~~ getA1Time C:\\Users\\Smaragdine\\Downloads\\arduino_alarm_clock_project\\arduino_alarm_clock_project.ino: In function 'void loop()': arduino_alarm_clock_project:103:15: error: 'class DS3231' has no member named 'getTimeStr'; did you mean 'getMinute'? lcd.print(rtc.getTimeStr()); ^~~~~~~~~~ getMinute arduino_alarm_clock_project:107:15: error: 'class DS3231' has no member named 'getDateStr'; did you mean 'getDate'? lcd.print(rtc.getDateStr()); ^~~~~~~~~~ getDate arduino_alarm_clock_project:115:20: error: 'class DS3231' has no member named 'getTemp'; did you mean 'getYear'? tempCDS3231 = (rtc.getTemp()); ^~~~~~~ getYear arduino_alarm_clock_project:121:16: error: 'class DS3231' has no member named 'getDateStr'; did you mean 'getDate'? lcd.print(rtc.getDateStr()); ^~~~~~~~~~ getDate arduino_alarm_clock_project:126:3: error: 't' was not declared in this scope t = rtc.getTime(); ^ arduino_alarm_clock_project:126:11: error: 'class DS3231' has no member named 'getTime'; did you mean 'getA1Time'? t = rtc.getTime(); ^~~~~~~ getA1Time Multiple libraries were found for "DS3231.h" Used: C:\\Users\\Smaragdine\\Documents\\Arduino\\libraries\\DS3231 Not used: C:\\Users\\Smaragdine\\Documents\\Arduino\\libraries\\Arduino-DS3231-master exit status 1 no matching function for call to 'DS3231::DS3231(const uint8_t&, const uint8_t&)' Invalid library found in C:\\Users\\Smaragdine\\Documents\\Arduino\\libraries\\Arduino-IRremote-master: no headers files (.h) found in C:\\Users\\Smaragdine\\Documents\\Arduino\\libraries\\Arduino-IRremote-master Invalid library found in C:\\Users\\Smaragdine\\Documents\\Arduino\\libraries\\LiquidCrystal: no headers files (.h) found in C:\\Users\\Smaragdine\\Documents\\Arduino\\libraries\\LiquidCrystal Invalid library found in C:\\Users\\Smaragdine\\Documents\\Arduino\\libraries\\SimpleAlarmClock-master: no headers files (.h) found in C:\\Users\\Smaragdine\\Documents\\Arduino\\libraries\\SimpleAlarmClock-master

Anonymous user

2 years ago

hello. My code gives the same error.have you solve your problem?How did you do that?

CSteele

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