Abhirup Kabiraj
Published

Alarm clock without RTC

Don't you think today's alarm clocks are too convenient to avoid?This clock that I designed makes you get out of your bed just to stop it.

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Alarm clock without RTC

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Schematics

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Schematic diagram

Code

Code

Arduino
#include <LiquidCrystal.h>
//#include <DHT.h>
/*================================
    LCD INPUTS
  ================================*/
int rs = 7;
int en = 8;
int d4 = 9;
int d5 = 10;
int d6 = 11;
int d7 = 12;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
/*==================================
    TIME/ALARM SETTER
  ===================================*/
int timeset = A3;
int secs, mins, hour;
int alarm=A1;
int hour1,min1;
int buzzpin=6;
void setup() {
  Serial.begin(9600);
  // put your setup code here, to run once:
  lcd.begin(16, 2);
  pinMode(buzzpin,OUTPUT);
  digitalWrite(buzzpin,LOW);
  pinMode(timeset,INPUT);
  pinMode(alarm,INPUT);
  starter();
}

void loop() {
  // put your main code here, to run repeatedly:
  clock();
  Serial.println(analogRead(alarm));
  if(analogRead(alarm)==1023)
  {
    
    alarmset();
    
  }
  check();
}

void starter()
{
  for (int i = 0; i < 5; i++)
  {
    lcd.setCursor(0, 0);
    lcd.print("PLEASE WAIT");
    if (i % 3 == 0)
    {
      lcd.setCursor(0, 1);
      lcd.print("/");
      delay(100);
    }
    else if (i % 3 == 1)
    {
      lcd.setCursor(0, 1);
      lcd.print("-");
      delay(100);
    }
    else
    {
      lcd.setCursor(0, 1);
      lcd.print("\\");
      delay(100);
    }
    lcd.clear();
  }
  lcd.print("HEYY THERE!!");
  delay(3000);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("enter the time");
  delay(1500);
  lcd.clear();
  lcd.print("enter hours?");
  lcd.setCursor(0, 1);
  delay(2000);
  Serial.println(analogRead(timeset));
  hour = 12. / 1023.*analogRead(timeset);;
  Serial.println(hour);
  lcd.print(hour);
  delay(1000);
  lcd.clear();


  lcd.setCursor(0, 0);
  lcd.print("enter minutes");
  lcd.setCursor(0, 1);
  delay(2000);
  Serial.println(analogRead(timeset));
  mins = 60. / 1023.*analogRead(timeset);
  Serial.println(mins);
  lcd.print(mins);
  delay(1000);
  lcd.clear();
  lcd.setCursor(0, 0);


  
  lcd.print("enter seconds");
  lcd.setCursor(0, 1);
  delay(3000);
  Serial.println(analogRead(timeset));
  secs = 60. / 1023.*analogRead(timeset);
  Serial.println(secs);
  lcd.print(secs);
  lcd.clear();
  secs = secs + 3;
}
void clock()
{
  updatetime();
  lcd.setCursor(0,0);
  lcd.print("TIME:");
  lcd.setCursor(3, 1);
  lcd.println(hour);
  lcd.setCursor(5, 1);
  lcd.print(":");
  lcd.print(mins);
  lcd.setCursor(8, 1);
  lcd.print(":");
  lcd.print(secs);
  secs = secs + 1;
  delay(1000);
  lcd.clear();
}

void alarmset()
{
  lcd.print("Setting Alarm");
  delay(1000);
  lcd.clear();
  lcd.print("enter hours?");
  lcd.setCursor(0, 1);
  delay(2000);
  
  hour1 = 12. / 1023.*analogRead(timeset);;
  Serial.println(hour1);
  lcd.print(hour1);
  delay(1000);
  lcd.clear();


  lcd.setCursor(0, 0);
  lcd.print("enter minutes");
  lcd.setCursor(0, 1);
  delay(2000);
  min1 = 60. / 1023.*analogRead(timeset);
  Serial.println(min1);
  lcd.print(min1);
  delay(1000);
  lcd.clear();
  lcd.setCursor(0, 0);
  secs=secs+7;
}

void updatetime()
{
  if (secs >= 60)
  {
    mins = mins + 1;
    secs = secs - 60;;
  }
  if (mins >= 60)
  {
    hour = hour + 1;
    mins = mins - 60;
  }
  if (hour >= 24)
  {
    hour = hour - 24;
    mins = 0;
    secs = 0;
  }
}
void check()
{
  if(hour1==hour && min1==mins)
  {
    lcd.clear();
    lcd.print("ALARM");
   tone(buzzpin,1915);
  delay(1000); // Wait for 1000 millisecond(s)
  tone(buzzpin,1700);
  delay(1000); // Wait for 1000 millisecond(s)
  tone(buzzpin,1519);
  delay(1000);
  tone(buzzpin,1432);
  delay(1000);
  tone(buzzpin,1275);
  delay(1000);
  tone(buzzpin,1136);
  delay(1000);
  tone(buzzpin,1014);
  delay(1000);
  tone(buzzpin,0);
  delay(1000);
    secs=secs+8;
  }
  else
  {
    noTone(buzzpin);
  }
}

Credits

Abhirup Kabiraj

Abhirup Kabiraj

2 projects • 1 follower

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