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added some proper grammar, formatted the code with Arduino's autoformat, and changed single character named variables 'S' 'M' and 'H' to seconds, minutes, and hours
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edit approved Jun 26, 2019 at 18:01
AJ_Smoothie
edit approved Jun 26, 2019 at 18:01
AJ_Smoothie
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iI have aan Arduino project to do  , with arduino , to make anwhich requires a countdown timer  (i make thatwhich I've already done)  .I connect I connected a push button  , and i want when I press the butonthat button I need it to increase time with 10+my countdown timer by +10 seconds. Cand

Can anyone help me with adding the code for thethis button?

thereHere is the code: so far(iI declared the button, ibut I don't know if isit's any good):

#include <LiquidCrystal.h> 

int buttonPin = 7; 
int buttonState = 0;
int Sseconds = 30; // count seconds 
int Mminutes = 0; // count minutes
int Hhours = 0; // count hours
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
//initialize the library with the numbers of the interface pins
LiquidCrystal lcd(rs, en, d4, d5, d6, d7); // pins connected to LCD

void setup()
{
  lcd.begin(16, 2); //set up the LCD's number of columns and rows
  pinMode(buttonPin, INPUT);
}
void loop()
{
  buttonState = digitalRead(buttonPin);
  lcd.setCursor(1, 0); 
  lcd.print ("Sosire in:");
  lcd.setCursor(6, 1);
  lcd.print(":");
  lcd.setCursor(9, 1);
  lcd.print(":");
 
 S seconds--;
  delay(1000);
  
 if (S<0seconds < 0)
  {
 M   minutes--;
 S=59;   seconds = 59;
  }
 if (M<0minutes < 0)
  {
 H   hours--;
 M=59;   minutes = 59;
  }
 if (H<0hours < 0)
  { 
 H=0; M=0; S=30; hours = 0;
    minutes = 0;
    seconds = 30;
  } 
 if (M>9minutes > 9)
  {
    lcd.setCursor(7, 1);
    lcd.print(Mminutes);
  }
 else
  {
    lcd.setCursor(7, 1);
    lcd.print("0"); 
    lcd.setCursor(8, 1);
    lcd.print(Mminutes);
    lcd.setCursor(9, 1);
    lcd.print(":");
  }
  
 if (S>9seconds > 9)
  {
    lcd.setCursor(10, 1);
    lcd.print(Sseconds);
  }
 else
  {
    lcd.setCursor(10, 1);
    lcd.print("0"); 
    lcd.setCursor(11, 1);
    lcd.print(Sseconds);
    lcd.setCursor(12, 1);
    lcd.print(" ");
  }
  
 if (H>9hours > 9)
  {
    lcd.setCursor(4, 1);
    lcd.print (Hhours);
  }
 else
  {
    lcd.setCursor(4, 1);
    lcd.print("0"); 
    lcd.setCursor(5, 1);
    lcd.print(Hhours);
    lcd.setCursor(6, 1);
    lcd.print(":");
  }
 if (S==0seconds == 0)
  {
    lcd.clear();
    lcd.print("Este in statie");
    delay(5000);
    lcd.clear();
  }

}

i have a project to do  , with arduino , to make an countdown timer  (i make that already)  .I connect a push button  , and i want when press the buton to increase time with 10+ seconds. Cand anyone help me with the code for the button?

there is the code:(i declared the button, i don't know if is good)

#include <LiquidCrystal.h> 

int buttonPin = 7; 
int buttonState = 0;
int S = 30; // count seconds 
int M = 0; // count minutes
int H = 0; // count hours
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
//initialize the library with the numbers of the interface pins
LiquidCrystal lcd(rs, en, d4, d5, d6, d7); // pins connected to LCD

void setup()
{
 lcd.begin(16,2);//set up the LCD's number of columns and rows
 pinMode(buttonPin, INPUT);
}
void loop()
{
 buttonState = digitalRead(buttonPin);
 lcd.setCursor(1,0); 
 lcd.print ("Sosire in:");
 lcd.setCursor(6,1);
 lcd.print(":");
 lcd.setCursor(9,1);
 lcd.print(":");
 
 S--;
 delay(1000);
  
 if(S<0)
 {
 M--;
 S=59;
 }
 if(M<0)
 {
 H--;
 M=59;
 }
 if(H<0) { H=0; M=0; S=30; } if(M>9)
 {
 lcd.setCursor(7,1);
 lcd.print(M);
 }
 else
 {
 lcd.setCursor(7,1);
 lcd.print("0"); 
 lcd.setCursor(8,1);
 lcd.print(M);
 lcd.setCursor(9,1);
 lcd.print(":");
 }
  
 if(S>9)
 {
 lcd.setCursor(10,1);
 lcd.print(S);
 }
 else
 {
 lcd.setCursor(10,1);
 lcd.print("0"); 
 lcd.setCursor(11,1);
 lcd.print(S);
 lcd.setCursor(12,1);
 lcd.print(" ");
 }
  
 if(H>9)
 {
 lcd.setCursor(4,1);
 lcd.print (H);
 }
 else
 {
 lcd.setCursor(4,1);
 lcd.print("0"); 
 lcd.setCursor(5,1);
 lcd.print(H);
 lcd.setCursor(6,1);
 lcd.print(":");
 }
 if(S==0)
 {
  lcd.clear();
  lcd.print("Este in statie");
  delay(5000);
  lcd.clear();
 }

}

I have an Arduino project to do, which requires a countdown timer(which I've already done). I connected a push button, and when I press that button I need it to increase my countdown timer by +10 seconds.

Can anyone help me with adding the code for this button?

Here is the code so far(I declared the button, but I don't know if it's any good):

#include <LiquidCrystal.h>

int buttonPin = 7;
int buttonState = 0;
int seconds = 30; // count seconds
int minutes = 0; // count minutes
int hours = 0; // count hours
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
//initialize the library with the numbers of the interface pins
LiquidCrystal lcd(rs, en, d4, d5, d6, d7); // pins connected to LCD

void setup()
{
  lcd.begin(16, 2); //set up the LCD's number of columns and rows
  pinMode(buttonPin, INPUT);
}
void loop()
{
  buttonState = digitalRead(buttonPin);
  lcd.setCursor(1, 0);
  lcd.print ("Sosire in:");
  lcd.setCursor(6, 1);
  lcd.print(":");
  lcd.setCursor(9, 1);
  lcd.print(":");

  seconds--;
  delay(1000);

 if (seconds < 0)
  {
    minutes--;
    seconds = 59;
  }
 if (minutes < 0)
  {
    hours--;
    minutes = 59;
  }
 if (hours < 0)
  { 
    hours = 0;
    minutes = 0;
    seconds = 30;
  } 
 if (minutes > 9)
  {
    lcd.setCursor(7, 1);
    lcd.print(minutes);
  }
 else
  {
    lcd.setCursor(7, 1);
    lcd.print("0");
    lcd.setCursor(8, 1);
    lcd.print(minutes);
    lcd.setCursor(9, 1);
    lcd.print(":");
  }

 if (seconds > 9)
  {
    lcd.setCursor(10, 1);
    lcd.print(seconds);
  }
 else
  {
    lcd.setCursor(10, 1);
    lcd.print("0");
    lcd.setCursor(11, 1);
    lcd.print(seconds);
    lcd.setCursor(12, 1);
    lcd.print(" ");
  }

 if (hours > 9)
  {
    lcd.setCursor(4, 1);
    lcd.print(hours);
  }
 else
  {
    lcd.setCursor(4, 1);
    lcd.print("0");
    lcd.setCursor(5, 1);
    lcd.print(hours);
    lcd.setCursor(6, 1);
    lcd.print(":");
  }
 if (seconds == 0)
  {
    lcd.clear();
    lcd.print("Este in statie");
    delay(5000);
    lcd.clear();
  }

}
added 368 characters in body
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Michel Keijzers
Michel Keijzers
  • 13k
  • 7
  • 43
  • 59

#include <LiquidCrystal.h>

int buttonPin = 7; int buttonState = 0; int S = 30; // count seconds int M = 0; // count minutes int H = 0; // count hours const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2; //initialize the library with the numbers of the interface pins LiquidCrystal lcd(rs, en, d4, d5, d6, d7); // pins connected to LCD

void setup() { lcd.begin(16,2);//set up the LCD's number of columns and rows pinMode(buttonPin, INPUT); } void loop() { buttonState = digitalRead(buttonPin); lcd.setCursor(1,0); lcd.print ("Sosire in:"); lcd.setCursor(6,1); lcd.print(":"); lcd.setCursor(9,1); lcd.print(":");

S--; delay(1000);

if(S<0) { M--; S=59; } if(M<0) { H--; M=59; } if(H<0) { H=0; M=0; S=30; } if(M>9) { lcd.setCursor(7,1); lcd.print(M); } else { lcd.setCursor(7,1); lcd.print("0"); lcd.setCursor(8,1); lcd.print(M); lcd.setCursor(9,1); lcd.print(":"); }

if(S>9) { lcd.setCursor(10,1); lcd.print(S); } else { lcd.setCursor(10,1); lcd.print("0"); lcd.setCursor(11,1); lcd.print(S); lcd.setCursor(12,1); lcd.print(" "); }

if(H>9) { lcd.setCursor(4,1); lcd.print (H); } else { lcd.setCursor(4,1); lcd.print("0"); lcd.setCursor(5,1); lcd.print(H); lcd.setCursor(6,1); lcd.print(":"); } if(S==0) { lcd.clear(); lcd.print("Este in statie"); delay(5000); lcd.clear(); }

}

#include <LiquidCrystal.h> 

int buttonPin = 7; 
int buttonState = 0;
int S = 30; // count seconds 
int M = 0; // count minutes
int H = 0; // count hours
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
//initialize the library with the numbers of the interface pins
LiquidCrystal lcd(rs, en, d4, d5, d6, d7); // pins connected to LCD

void setup()
{
 lcd.begin(16,2);//set up the LCD's number of columns and rows
 pinMode(buttonPin, INPUT);
}
void loop()
{
 buttonState = digitalRead(buttonPin);
 lcd.setCursor(1,0); 
 lcd.print ("Sosire in:");
 lcd.setCursor(6,1);
 lcd.print(":");
 lcd.setCursor(9,1);
 lcd.print(":");
 
 S--;
 delay(1000);
  
 if(S<0)
 {
 M--;
 S=59;
 }
 if(M<0)
 {
 H--;
 M=59;
 }
 if(H<0) { H=0; M=0; S=30; } if(M>9)
 {
 lcd.setCursor(7,1);
 lcd.print(M);
 }
 else
 {
 lcd.setCursor(7,1);
 lcd.print("0"); 
 lcd.setCursor(8,1);
 lcd.print(M);
 lcd.setCursor(9,1);
 lcd.print(":");
 }
  
 if(S>9)
 {
 lcd.setCursor(10,1);
 lcd.print(S);
 }
 else
 {
 lcd.setCursor(10,1);
 lcd.print("0"); 
 lcd.setCursor(11,1);
 lcd.print(S);
 lcd.setCursor(12,1);
 lcd.print(" ");
 }
  
 if(H>9)
 {
 lcd.setCursor(4,1);
 lcd.print (H);
 }
 else
 {
 lcd.setCursor(4,1);
 lcd.print("0"); 
 lcd.setCursor(5,1);
 lcd.print(H);
 lcd.setCursor(6,1);
 lcd.print(":");
 }
 if(S==0)
 {
  lcd.clear();
  lcd.print("Este in statie");
  delay(5000);
  lcd.clear();
 }

}

#include <LiquidCrystal.h>

int buttonPin = 7; int buttonState = 0; int S = 30; // count seconds int M = 0; // count minutes int H = 0; // count hours const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2; //initialize the library with the numbers of the interface pins LiquidCrystal lcd(rs, en, d4, d5, d6, d7); // pins connected to LCD

void setup() { lcd.begin(16,2);//set up the LCD's number of columns and rows pinMode(buttonPin, INPUT); } void loop() { buttonState = digitalRead(buttonPin); lcd.setCursor(1,0); lcd.print ("Sosire in:"); lcd.setCursor(6,1); lcd.print(":"); lcd.setCursor(9,1); lcd.print(":");

S--; delay(1000);

if(S<0) { M--; S=59; } if(M<0) { H--; M=59; } if(H<0) { H=0; M=0; S=30; } if(M>9) { lcd.setCursor(7,1); lcd.print(M); } else { lcd.setCursor(7,1); lcd.print("0"); lcd.setCursor(8,1); lcd.print(M); lcd.setCursor(9,1); lcd.print(":"); }

if(S>9) { lcd.setCursor(10,1); lcd.print(S); } else { lcd.setCursor(10,1); lcd.print("0"); lcd.setCursor(11,1); lcd.print(S); lcd.setCursor(12,1); lcd.print(" "); }

if(H>9) { lcd.setCursor(4,1); lcd.print (H); } else { lcd.setCursor(4,1); lcd.print("0"); lcd.setCursor(5,1); lcd.print(H); lcd.setCursor(6,1); lcd.print(":"); } if(S==0) { lcd.clear(); lcd.print("Este in statie"); delay(5000); lcd.clear(); }

}

#include <LiquidCrystal.h> 

int buttonPin = 7; 
int buttonState = 0;
int S = 30; // count seconds 
int M = 0; // count minutes
int H = 0; // count hours
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
//initialize the library with the numbers of the interface pins
LiquidCrystal lcd(rs, en, d4, d5, d6, d7); // pins connected to LCD

void setup()
{
 lcd.begin(16,2);//set up the LCD's number of columns and rows
 pinMode(buttonPin, INPUT);
}
void loop()
{
 buttonState = digitalRead(buttonPin);
 lcd.setCursor(1,0); 
 lcd.print ("Sosire in:");
 lcd.setCursor(6,1);
 lcd.print(":");
 lcd.setCursor(9,1);
 lcd.print(":");
 
 S--;
 delay(1000);
  
 if(S<0)
 {
 M--;
 S=59;
 }
 if(M<0)
 {
 H--;
 M=59;
 }
 if(H<0) { H=0; M=0; S=30; } if(M>9)
 {
 lcd.setCursor(7,1);
 lcd.print(M);
 }
 else
 {
 lcd.setCursor(7,1);
 lcd.print("0"); 
 lcd.setCursor(8,1);
 lcd.print(M);
 lcd.setCursor(9,1);
 lcd.print(":");
 }
  
 if(S>9)
 {
 lcd.setCursor(10,1);
 lcd.print(S);
 }
 else
 {
 lcd.setCursor(10,1);
 lcd.print("0"); 
 lcd.setCursor(11,1);
 lcd.print(S);
 lcd.setCursor(12,1);
 lcd.print(" ");
 }
  
 if(H>9)
 {
 lcd.setCursor(4,1);
 lcd.print (H);
 }
 else
 {
 lcd.setCursor(4,1);
 lcd.print("0"); 
 lcd.setCursor(5,1);
 lcd.print(H);
 lcd.setCursor(6,1);
 lcd.print(":");
 }
 if(S==0)
 {
  lcd.clear();
  lcd.print("Este in statie");
  delay(5000);
  lcd.clear();
 }

}
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Radu Lucian
Radu Lucian
  • 21
  • 2

Arduino Timer with increase time button

i have a project to do , with arduino , to make an countdown timer (i make that already) .I connect a push button , and i want when press the buton to increase time with 10+ seconds. Cand anyone help me with the code for the button?

there is the code:(i declared the button, i don't know if is good)

#include <LiquidCrystal.h>

int buttonPin = 7; int buttonState = 0; int S = 30; // count seconds int M = 0; // count minutes int H = 0; // count hours const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2; //initialize the library with the numbers of the interface pins LiquidCrystal lcd(rs, en, d4, d5, d6, d7); // pins connected to LCD

void setup() { lcd.begin(16,2);//set up the LCD's number of columns and rows pinMode(buttonPin, INPUT); } void loop() { buttonState = digitalRead(buttonPin); lcd.setCursor(1,0); lcd.print ("Sosire in:"); lcd.setCursor(6,1); lcd.print(":"); lcd.setCursor(9,1); lcd.print(":");

S--; delay(1000);

if(S<0) { M--; S=59; } if(M<0) { H--; M=59; } if(H<0) { H=0; M=0; S=30; } if(M>9) { lcd.setCursor(7,1); lcd.print(M); } else { lcd.setCursor(7,1); lcd.print("0"); lcd.setCursor(8,1); lcd.print(M); lcd.setCursor(9,1); lcd.print(":"); }

if(S>9) { lcd.setCursor(10,1); lcd.print(S); } else { lcd.setCursor(10,1); lcd.print("0"); lcd.setCursor(11,1); lcd.print(S); lcd.setCursor(12,1); lcd.print(" "); }

if(H>9) { lcd.setCursor(4,1); lcd.print (H); } else { lcd.setCursor(4,1); lcd.print("0"); lcd.setCursor(5,1); lcd.print(H); lcd.setCursor(6,1); lcd.print(":"); } if(S==0) { lcd.clear(); lcd.print("Este in statie"); delay(5000); lcd.clear(); }

}