Arduino Kitchen Timer

 /*
  Kitchen_Timer

 Counts up LED's on a bar graph to indicate 5 minute icrements being added to
 a timer circuit. A button is held to count up the LED's, and when the timer
 finishes the Bar Graph shows a graphic, and a piezo-electric buzzer sounds.

 The circuit:
 * LED bar graph attached from pins (13-3 excluding 9) to ground
 * pushbutton attached to pin 2 from +5V
 * 10K resistor attached to pin 2 from ground
 * piezo buzzer attached to pin 9 from ground

 * Note: I recommend doing this on an arduino shield, as this requires a good
 amount of wire jumpers.

 Created in 2011 ©
 by Ari Cooper Davis [anonymouse197@gmail.com]
 http://www.instructables.com/member/anonymouse197/

 */

 // constants (const) won't change. They're used here to set pin numbers:

 const int buttonPin = 2;     // the number of the pushbutton pin
 const int ledPin =  13;      // the number of the 1st LED pin
 const int led2Pin = 12;      // the number of the 2nd LED pin
 const int led3Pin = 11;      // the number of the 3rd LED pin
 const int led4Pin = 10;      // the number of the 4th LED pin
 const int led5Pin = 8;       // the number of the 5th LED pin
 const int led6Pin = 7;       // the number of the 6th LED pin
 const int led7Pin = 6;       // the number of the 7th LED pin
 const int led8Pin = 5;       // the number of the 8th LED pin
 const int led9Pin = 4;       // the number of the 9th LED pin
 const int led10Pin = 3;      // the number of the 10th LED pin
 const int speakerOut = 9;

 // variables will change. They're used mostly for functions:

 int buttonState = 0;         // variable for reading the pushbutton status
 int tastyTimeVariable = 0;   // variable for defining time to wait
 int iVariable = 0;           // variable for repeating display alarm
 int tVariable = 0;           // variable for repeating piezo alarm

 void setup() {
  // initialize the LED pins as output pins:
  pinMode(ledPin, OUTPUT);
  pinMode(led2Pin, OUTPUT);
  pinMode(led3Pin, OUTPUT);
  pinMode(led4Pin, OUTPUT);
  pinMode(led5Pin, OUTPUT);
  pinMode(led6Pin, OUTPUT);
  pinMode(led7Pin, OUTPUT);
  pinMode(led8Pin, OUTPUT);
  pinMode(led9Pin, OUTPUT);
  pinMode(led10Pin, OUTPUT);
  // initialize the pushbutton pin as an input:
  pinMode(buttonPin, INPUT);
  // initialize the piezo pin as an output
  pinMode(speakerOut, OUTPUT);
  delay(1000);
 }

void loop(){
  // read the state of the pushbutton value:
  buttonState = digitalRead(buttonPin);

  // check if the pushbutton is pressed. if it is, the buttonState is HIGH:
  if (buttonState == HIGH) {
    // add to timer
    ++tastyTimeVariable;
    digitalWrite(ledPin, HIGH);
   }
  else {
  }

  delay(1000);  // a second delay for adding time increments

  buttonState = digitalRead(buttonPin);
  if (buttonState == HIGH) {
    // add to timer
    ++tastyTimeVariable;
    digitalWrite(led2Pin, HIGH);
   }
  else {
  }

 delay(1000);

  buttonState = digitalRead(buttonPin);
  if (buttonState == HIGH) {
    // add to timer
    ++tastyTimeVariable;
    digitalWrite(led3Pin, HIGH);
   }
  else {
  }

   delay(1000);

   buttonState = digitalRead(buttonPin);
  if (buttonState == HIGH) {
    // add to timer
    ++tastyTimeVariable;
    digitalWrite(led4Pin, HIGH);
   }
  else {
  }

   delay(1000);

   buttonState = digitalRead(buttonPin);
  if (buttonState == HIGH) {
    // add to timer
    ++tastyTimeVariable;
    digitalWrite(led5Pin, HIGH);
   }
  else {
  }

   delay(1000);

   buttonState = digitalRead(buttonPin);
  if (buttonState == HIGH) {
    // add to timer
    ++tastyTimeVariable;
    digitalWrite(led6Pin, HIGH);
   }
  else {
  }

   delay(1000);

   buttonState = digitalRead(buttonPin);
  if (buttonState == HIGH) {
    // add to timer
    ++tastyTimeVariable;
    digitalWrite(led7Pin, HIGH);
   }
  else {
  }

  delay(1000);

    buttonState = digitalRead(buttonPin);
   if (buttonState == HIGH) {
    // add to timer
    ++tastyTimeVariable;
    digitalWrite(led8Pin, HIGH);
   }
  else {
  }

 delay(1000);

    buttonState = digitalRead(buttonPin);
   if (buttonState == HIGH) {
    // add to timer
    ++tastyTimeVariable;
    digitalWrite(led9Pin, HIGH);
   }
  else {
  }

 delay(1000);

     buttonState = digitalRead(buttonPin);
    if (buttonState == HIGH) {
    // add to timer
    ++tastyTimeVariable;
    digitalWrite(led10Pin, HIGH);
   }
  else {
  }

  // The above code runs to add 1 to the tastyTimeVariable if the button is
  // pressed, so that the arduino knows how long it should time for.

 delay(1000);

 digitalWrite(led10Pin, LOW);
 digitalWrite(led9Pin, LOW);
 digitalWrite(led8Pin, LOW);
 digitalWrite(led7Pin, LOW);
 digitalWrite(led6Pin, LOW);
 digitalWrite(led5Pin, LOW);
 digitalWrite(led4Pin, LOW);
 digitalWrite(led3Pin, LOW);
 digitalWrite(led2Pin, LOW);
 digitalWrite(ledPin, LOW);

 delay(1000);

  // The above code turns all LED's off, so as to make sure they do not
  // interfere later on in the coding.

 if (tastyTimeVariable == 0) {
 }

 else if (tastyTimeVariable == 1) {
  digitalWrite (ledPin, HIGH);
  delay(300L * 1000L);  // 5 minutes. This can be changed to change increments
 }

 else if (tastyTimeVariable == 2) {
  digitalWrite (led2Pin, HIGH);
  digitalWrite (ledPin, HIGH);
  delay(300L * 1000L);
  digitalWrite (led2Pin, LOW);
  delay(300L * 1000L);
  }

 else if (tastyTimeVariable == 3) {
  digitalWrite (led3Pin, HIGH);
  digitalWrite (led2Pin, HIGH);
  digitalWrite (ledPin, HIGH);
  delay(300L * 1000L);
  digitalWrite (led3Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led2Pin, LOW);
  delay(300L * 1000L);
  }

 else if (tastyTimeVariable == 4) {
  digitalWrite (led4Pin, HIGH);
  digitalWrite (led3Pin, HIGH);
  digitalWrite (led2Pin, HIGH);
  digitalWrite (ledPin, HIGH);
  delay(300L * 1000L);
  digitalWrite (led4Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led3Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led2Pin, LOW);
  delay(300L * 1000L);
  }

 else if (tastyTimeVariable == 5) {
  digitalWrite (led5Pin, HIGH);
  digitalWrite (led4Pin, HIGH);
  digitalWrite (led3Pin, HIGH);
  digitalWrite (led2Pin, HIGH);
  digitalWrite (ledPin, HIGH);
  delay(300L * 1000L);
  digitalWrite (led5Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led4Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led3Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led2Pin, LOW);
  delay(300L * 1000L);
  }

 else if (tastyTimeVariable == 6) {
  digitalWrite (led6Pin, HIGH);
  digitalWrite (led5Pin, HIGH);
  digitalWrite (led4Pin, HIGH);
  digitalWrite (led3Pin, HIGH);
  digitalWrite (led2Pin, HIGH);
  digitalWrite (ledPin, HIGH);
  delay(300L * 1000L);
  digitalWrite (led6Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led5Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led4Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led3Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led2Pin, LOW);
  delay(300L * 1000L);
  }

  else if (tastyTimeVariable == 7) {
  digitalWrite (led7Pin, HIGH);
  digitalWrite (led6Pin, HIGH);
  digitalWrite (led5Pin, HIGH);
  digitalWrite (led4Pin, HIGH);
  digitalWrite (led3Pin, HIGH);
  digitalWrite (led2Pin, HIGH);
  digitalWrite (ledPin, HIGH);
  delay(300L * 1000L);
  digitalWrite (led7Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led6Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led5Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led4Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led3Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led2Pin, LOW);
  delay(300L * 1000L);
  }

  else if (tastyTimeVariable == 8) {
  digitalWrite (led8Pin, HIGH);
  digitalWrite (led7Pin, HIGH);
  digitalWrite (led6Pin, HIGH);
  digitalWrite (led5Pin, HIGH);
  digitalWrite (led4Pin, HIGH);
  digitalWrite (led3Pin, HIGH);
  digitalWrite (led2Pin, HIGH);
  digitalWrite (ledPin, HIGH);
  delay(300L * 1000L);
  digitalWrite (led8Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led7Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led6Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led5Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led4Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led3Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led2Pin, LOW);
  delay(300L * 1000L);
  }

  else if (tastyTimeVariable == 9) {
  digitalWrite (led9Pin, HIGH);
  digitalWrite (led8Pin, HIGH);
  digitalWrite (led7Pin, HIGH);
  digitalWrite (led6Pin, HIGH);
  digitalWrite (led5Pin, HIGH);
  digitalWrite (led4Pin, HIGH);
  digitalWrite (led3Pin, HIGH);
  digitalWrite (led2Pin, HIGH);
  digitalWrite (ledPin, HIGH);
  delay(300L * 1000L);
  digitalWrite (led9Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led8Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led7Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led6Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led5Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led4Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led3Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led2Pin, LOW);
  delay(300L * 1000L);
  }

  else if (tastyTimeVariable == 10) {
  digitalWrite (led10Pin, HIGH);
  digitalWrite (led9Pin, HIGH);
  digitalWrite (led8Pin, HIGH);
  digitalWrite (led7Pin, HIGH);
  digitalWrite (led6Pin, HIGH);
  digitalWrite (led5Pin, HIGH);
  digitalWrite (led4Pin, HIGH);
  digitalWrite (led3Pin, HIGH);
  digitalWrite (led2Pin, HIGH);
  digitalWrite (ledPin, HIGH);
  delay(300L * 1000L);
  digitalWrite (led10Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led9Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led8Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led7Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led6Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led5Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led4Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led3Pin, LOW);
  delay(300L * 1000L);
  digitalWrite (led2Pin, LOW);
  delay(300L * 1000L);
  }

  else if (tastyTimeVariable > 10)  {
  }

  if (tastyTimeVariable == 0)  {
  }

  else {

    for(int iVariable = 0; iVariable < 1000; iVariable++) { // alarm length

  digitalWrite(ledPin, HIGH);
  delay(100);
  digitalWrite(led2Pin, HIGH);
  delay(100);
  digitalWrite(led3Pin, HIGH);
  digitalWrite(ledPin, LOW);
  delay(100);
  digitalWrite(led4Pin, HIGH);
  digitalWrite(led2Pin, LOW);
  delay(100);
  digitalWrite(led5Pin, HIGH);
  digitalWrite(led3Pin, LOW);
  delay(100);
  digitalWrite(led6Pin, HIGH);
  digitalWrite(led4Pin, LOW);
  delay(100);
  digitalWrite(led7Pin, HIGH);
  digitalWrite(led5Pin, LOW);
  delay(100);
  digitalWrite(led8Pin, HIGH);
  digitalWrite(led6Pin, LOW);
  delay(100);
  digitalWrite(led9Pin, HIGH);
  digitalWrite(led7Pin, LOW);
  delay(100);
  digitalWrite(led10Pin, HIGH);
  digitalWrite(led8Pin, LOW);
  delay(100);
  digitalWrite(led9Pin, LOW);
  delay(100);
  digitalWrite(led10Pin, LOW);
  delay(400);

  // The above code creates a loading bar effect with the LED's

  for(int tVariable = 0; tVariable < 5; tVariable++) {  // another loop function
    analogWrite(speakerOut, 150);
    delay(50);
    analogWrite(speakerOut, 0);
    delay(50);
    analogWrite(speakerOut, 5);
    delay(50);
    analogWrite(speakerOut, 0);
    delay(50);
    }

    // The above code creates a buzzer noise alarm

   }
  }

}