detonator

Hi!

i need some help with this:
my detonator script shows time like this: sss (120) and i want it to show it like this: hh:mm:ss
And also i want it to start detonating only after i press button in pin 8
my lcd is 20x4
arduino uno
original script:

/*
  LiquidCrystal Library - display() and noDisplay()
 
 Demonstrates the use a 16x2 LCD display.  The LiquidCrystal
 library works with all LCD displays that are compatible with the 
 Hitachi HD44780 driver. There are many of them out there, and you
 can usually tell them by the 16-pin interface.
 
 This sketch prints "Hello World!" to the LCD and uses the 
 display() and noDisplay() functions to turn on and off
 the display.
 
 The circuit:
 * LCD RS pin to digital pin 12
 * LCD Enable pin to digital pin 11
 * LCD D4 pin to digital pin 5
 * LCD D5 pin to digital pin 4
 * LCD D6 pin to digital pin 3
 * LCD D7 pin to digital pin 2
 * LCD R/W pin to ground
 * 10K resistor:
 * ends to +5V and ground
 * wiper to LCD VO pin (pin 3)
 
 Library originally added 18 Apr 2008
 by David A. Mellis
 library modified 5 Jul 2009
 by Limor Fried (http://www.ladyada.net)
 example added 9 Jul 2009
 by Tom Igoe 
 modified 22 Nov 2010
 by Tom Igoe

 This example code is in the public domain.

 http://www.arduino.cc/en/Tutorial/LiquidCrystal
 */

// include the library code:
#include <LiquidCrystal.h>
int timer=2.00; // 120 seconds. (2 minutes)  
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int detonatorPin = 13;
int ledPin = 9;


void setup() {
  pinMode(detonatorPin, OUTPUT);
   pinMode(ledPin, OUTPUT);

   
  // set up the LCD's number of columns and rows: 
  lcd.begin(20, 4);
  // Print a message to the LCD.
  lcd.print("#########################");
  lcd.setCursor(0,1);
  lcd.print("#########################");
  lcd.setCursor(0,2);
  lcd.print("#########################");
  lcd.setCursor(0,3);
  lcd.print("#########################");
  delay(1000);
  lcd.clear();
  lcd.print("Starting...");
   digitalWrite(ledPin, HIGH);
  delay(2000);
  lcd.clear();
  lcd.print("Loading core...");
  lcd.setCursor(1,1);
  lcd.print("#############");
  delay(1000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Loading core...");
  lcd.setCursor(1,1);
  lcd.print("*############");
  delay(1000);
 
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Loading core...");
  lcd.setCursor(1,1);
  lcd.print("****#########");
  delay(1000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Loading core...");
  lcd.setCursor(1,1);
  lcd.print("********#####");
  delay(1000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Loading core...");
  lcd.setCursor(1,1);
  lcd.print("*************");
  delay(2000);
  lcd.setCursor(2,2);
  lcd.print("Core Loaded!");
 
  delay(5000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Status:Connected.");
  delay(1000);
  lcd.setCursor(6,1);
  lcd.print("Armed");
  delay(1000);
  lcd.setCursor(0,2);
  lcd.print("*******READY********");
   
  delay(5000);
  digitalWrite(detonatorPin, HIGH); 
delay(150); 
digitalWrite(detonatorPin, LOW);
delay(500); 
digitalWrite(detonatorPin, HIGH); 
delay(150); 
digitalWrite(detonatorPin, LOW);
  lcd.clear();
  lcd.setCursor(0,0);
  
  lcd.print("Self-destruction in:");
}

void loop() { // This part runs until powered off.

  // main code for counting down etc.

  if (timer<=0) { // If timer reaches zero, you're toast.
    lcd.clear(); // clearing lcd.
 delay(2000); // Last two seconds
lcd.setCursor(6,0);
lcd.print("KABOOM!"); 
 lcd.setCursor(4,1);
lcd.print("KABOOM!"); 
lcd.setCursor(06,2);
lcd.print("KABOOM!");
lcd.setCursor(3,3);
lcd.print("KABOOM!"); 

digitalWrite(detonatorPin, HIGH); // Bye!
delay(2000); // Two seconds should be enough for detonating.
digitalWrite(detonatorPin, LOW); // Looping this part over and over in case it did not work at first.
}
    else{
       
  lcd.setCursor(8, 1); } // if timer value is greater than 0, keep on counting.
  // The actual counting down part
  while(timer>=0) { // While timer value is greater than zero
    lcd.print(timer); // Print timer value to LCD
    lcd.setCursor(8, 1); // Just to set the cursor right.
    
    timer--; // Reducing the timer value by one
    digitalWrite(ledPin, LOW);
  digitalWrite(detonatorPin, LOW);
  delay(1000); // wait one second
  digitalWrite(detonatorPin, HIGH);
  digitalWrite(ledPin, HIGH);
  
  // Next part is purely for the hollywood effect :P
  if (timer<=100){ // 100seconds remaining
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Self-destruction in:");
    lcd.setCursor(3,2);
    lcd.print(" Defuse faster!"); // Where is Jack Bauer when you need him?
    lcd.setCursor(8,1); }
  if (timer<=60) { // One minute remaining.
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("You may escape now!");
    lcd.setCursor(2,2);
    lcd.print("Time's almost up"); // There's still plenty of time...!
    lcd.setCursor(8,1); }
     if (timer<=10) {
       lcd.clear();
       lcd.setCursor(1,0);
       lcd.print("     Goodbye");  // Awwwsshhiiit.
    
    lcd.setCursor(8,1); // centering the cursor for last few seconds.
  } }

  
}

thank you allready

Something like this you mean?

EDIT: I apologise for the video quality I have a much better phone these days.

I did a few "fake IED" prop things for airsoft and paintball games, but went over to 7-segment based displays as they're just easier and make for an ever-so-slightly more realistic counter-terrorist sim game. They're so cheap and simple you could stash loads of them all over the site and make it a real challenge to track down and defuse them all within the game time limit!

Have some code - I don't make them like this any more so feel free to do what you want with it (except make an ACTUAL bomb, of course). It's not the best bit of programming in the world but as you can see, it does work.

// Countdown Timer Version 1
// By BulletMagnet83
// For ATmega328 & Arduino

#include <LiquidCrystal.h>


LiquidCrystal lcd(12, 11, 5, 4, 3, 2);


int seconds = 10;
int minutes = 0;

long previousMillis = 0;
long interval = 1000;

void setup () {
  
  pinMode(A0, INPUT); // seconds button
  digitalWrite(A0, HIGH); // turn on pullup resistor
  
  pinMode(A1, INPUT); // minutes button
  digitalWrite(A1, HIGH); // turn on pullup resistor
  
  pinMode(A2, INPUT); // start button
  digitalWrite(A2, HIGH); // turn on pullup resistor
  
  pinMode(A3, INPUT); // reset count button
  digitalWrite(A3, HIGH); // turn on pullup resistor
  
  lcd.begin(16, 2); // configure lcd for 16 columns 2 rows
  
}


void delaySet () {
  
  
  lcd.setCursor(0, 0);
  lcd.print("SET DELAY TIME");
  lcd.setCursor(0, 1);
  if(minutes < 10) {
    lcd.print("0");
    lcd.print(minutes);
  }
  else {
    lcd.print(minutes);
  }
  lcd.print(":");
  if(seconds < 10) {
    lcd.print("0");
    lcd.print(seconds);
  }
  else {
    lcd.print(seconds);
  }
  
  if(digitalRead(A0) == LOW) {
    seconds++;
    tone(7, 1400, 10);
    delay(200);
  }
  
  if(digitalRead(A1) == LOW) {
    minutes++;
    tone(7, 1400, 10);
    delay(200);
  }
  
  if(digitalRead(A2) == LOW) {
    countDown ();
  }
  
  if(digitalRead(A3) == LOW) {
    seconds = 10;
    minutes = 0;
    tone(7, 2800, 10);
    delay(100);
    tone(7, 2800, 10);
    
  }
  
  
  
  if(seconds > 59) {
    seconds = 0;
    minutes++;
  }
  
  if(minutes > 59) {
    minutes = 0;
  }

}



void countDown () {
  
  while(1) {
 
lcd.setCursor(0, 0);
  lcd.print("TIME REMAINING:");
  
   lcd.setCursor(0, 1);
  if(minutes < 10) {
    lcd.print("0");
    lcd.print(minutes);
  }
  else {
  lcd.print(minutes);
  }
  lcd.print(":");
  if(seconds < 10) {
    lcd.print("0");
    lcd.print(seconds);
  }
  else {
  lcd.print(seconds);
}
  
  static unsigned long lastTick = 0;
  
  if (millis() - lastTick >= 1000) {
  lastTick = millis();
  seconds--;
  if(minutes == 0 && seconds < 11) {
  tone(7, 2800, 50);
  }
  else {
    tone(7, 1400, 10);
  }
  }
  
  
  
  
  if(seconds < 0) {
    minutes--;
    seconds = 59;
  }
  if(minutes + seconds == 0) {
   
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("YOU'RE FUCKED");
    lcd.setCursor(0, 1);
    
    lcd.print("00:00");
    
    
    
    while(1) {
    }
  }
 
  }
}
  
  
void loop () {
  
  delaySet ();
 
}

This video is private

Oh piss it... hang on, I'll un-private it!

can you add schematic???

No, because I don't have one. Sorry! But what pins are used for what function is implied in the program itself, I'm sure you can work it out. My LCD pin usage is identical to yours, and hooking up a few buttons and a sounder (if desired) should be a no-brainer, right?

Since I started doing my wargaming props differently I stopped maintaining the project and didn't bother going back to LCDs for it - you now have as much material as I do.