Alarm clock that really gets you out of bed in the morning

I created an alarm clock using a motion detection sensor so that you're not able to just hit the snooze button and go back to sleep.

Nov 30, 2021

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clock

motion

alarm

Components and supplies

Clock module

Arduino Nano Every

HC-SR501

Buzzer

Apps and platforms

Arduino IDE

Project description

Code

Clock Library

arduino

This is a zip file for the DS3231 library. You have to download this and add it to your libraries as follows: open Arduino --> go to "Sketch" -> "Include Library " -> "Add .ZIP Library" --> go to the zip file and click ok

1inary file (no preview

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Alarm Clock Arduino Code

arduino

1#include <Wire.h>
2#include <DS3231.h>
3
4DS3231 clock;
5RTCDateTime  dt;
6
7int button = 9;
8int pirPin = 7; // Input for HC-S501
9int pirValue;  // Place to store read PIR Value
10
11//--------------------------------------
12int  set_hour = 7;
13int set_minute = 0;
14//--------------------------------------
15
16void  setup() {
17  clock.begin();
18  pinMode(button, INPUT_PULLUP);
19  pinMode(LED_BUILTIN,  OUTPUT);
20  //clock.setDateTime(__DATE__, __TIME__); // !!AFTER THE FIRST UPLOAD  YOU HAVE TO COMMENT OUT THIS LINE. OTHERWISE YOU WILL GET A WRONG TIME!!
21  pinMode(pirPin,  INPUT);
22}
23
24
25
26void alarm(int minute){
27  bool button_pressed = false;
28  bool awake = false;
29  bool movement = false;
30  
31  while(!button_pressed){     //the alarm is on as long the button isn't pressed
32    for(int i = 0; i  < 4; i++){
33      tone(11, 523, 100);
34      delay(100);
35      tone(11, 784,  50);
36
37      for(int i = 0; i < 20; i++){
38        if(digitalRead(button)  == LOW){
39        button_pressed = true;
40        awake = true;
41        dt  = clock.getDateTime();
42        minute = dt.minute;
43        }
44        delay(65);
45      }
46    }
47  }
48
49  dt = clock.getDateTime();
50  minute = dt.minute;
51
52  while(awake){
53    movement = false;
54    dt = clock.getDateTime();
55    for(int  i = 0; i < 30; i++){
56      if(digitalRead(pirPin)){movement = true;}
57    }
58    digitalWrite(LED_BUILTIN, movement);
59    if(!pirValue){
60      delay(5000);
61      for(int i = 0; i < 40; i++){
62        if(digitalRead(pirPin)){movement =  true;}
63      }
64      if(!movement){
65        alarm(minute); //if no motion  is detected for too long the alarm resets
66      }
67    }
68
69    if(abs(dt.minute  - minute) >= 1){ //set the time period where you must be in front of the sensor
70      tone(11, 698, 50);
71      delay(100);
72      tone(11, 698, 50);
73      digitalWrite(LED_BUILTIN,  0);
74      awake = false;
75    }
76
77    delay(100);
78  }
79
80}
81  
82void loop() {  
83  dt = clock.getDateTime();
84  if(set_minute == dt.minute  && set_hour == dt.hour){
85    alarm(set_minute);
86  }
87
88  delay(10000);
89}
90

#include <Wire.h>
#include <DS3231.h>

DS3231 clock;
RTCDateTime  dt;

int button = 9;
int pirPin = 7; // Input for HC-S501
int pirValue;  // Place to store read PIR Value

//--------------------------------------
int  set_hour = 7;
int set_minute = 0;
//--------------------------------------

void  setup() {
  clock.begin();
  pinMode(button, INPUT_PULLUP);
  pinMode(LED_BUILTIN,  OUTPUT);
  //clock.setDateTime(__DATE__, __TIME__); // !!AFTER THE FIRST UPLOAD  YOU HAVE TO COMMENT OUT THIS LINE. OTHERWISE YOU WILL GET A WRONG TIME!!
  pinMode(pirPin,  INPUT);
}



void alarm(int minute){
  bool button_pressed = false;
  bool awake = false;
  bool movement = false;
  
  while(!button_pressed){     //the alarm is on as long the button isn't pressed
    for(int i = 0; i  < 4; i++){
      tone(11, 523, 100);
      delay(100);
      tone(11, 784,  50);

      for(int i = 0; i < 20; i++){
        if(digitalRead(button)  == LOW){
        button_pressed = true;
        awake = true;
        dt  = clock.getDateTime();
        minute = dt.minute;
        }
        delay(65);
      }
    }
  }

  dt = clock.getDateTime();
  minute = dt.minute;

  while(awake){
    movement = false;
    dt = clock.getDateTime();
    for(int  i = 0; i < 30; i++){
      if(digitalRead(pirPin)){movement = true;}
    }
    digitalWrite(LED_BUILTIN, movement);
    if(!pirValue){
      delay(5000);
      for(int i = 0; i < 40; i++){
        if(digitalRead(pirPin)){movement =  true;}
      }
      if(!movement){
        alarm(minute); //if no motion  is detected for too long the alarm resets
      }
    }

    if(abs(dt.minute  - minute) >= 1){ //set the time period where you must be in front of the sensor
      tone(11, 698, 50);
      delay(100);
      tone(11, 698, 50);
      digitalWrite(LED_BUILTIN,  0);
      awake = false;
    }

    delay(100);
  }

}
  
void loop() {  
  dt = clock.getDateTime();
  if(set_minute == dt.minute  && set_hour == dt.hour){
    alarm(set_minute);
  }

  delay(10000);
}

Clock Library

arduino

1inary file (no preview

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Downloadable files

Alarm Clock schematics

I forgot to draw a connection to VCC and GND on the breadboard. So you just need to connect 5V on the Arduino to the positive rail and GND on the Arduino to the negative rail.

Alarm Clock schematics

Schematics with Arduino Nano (every)

Alarm Clock schematics

I forgot to draw a connection to VCC and GND on the breadboard. So you just need to connect 5V on the Arduino to the positive rail and GND on the Arduino to the negative rail.

Alarm Clock schematics

Schematics with Arduino Nano (every)

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galoebn

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