Electronic Dice +

electronic_dice

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// Arduino Dice by ____ AceLabs ____  www.theacelabs.com


                     // set to 1 if we're debugging
#define DEBUG 0

                     // 6 consecutive digital pins for the LEDs
 int first = 2;
 int second = 3;
 int third = 4;
 int fourth = 5;
 int fifth = 6;
 int sixth = 7;

                      // pin for the button switch
 int button = 12;
                      // value to check state of button switch
int pressed = 0;

void setup() {
                       // set all LED pins to OUTPUT
    for (int i=first; i<=sixth; i++) {
    pinMode(i, OUTPUT);
  }

                       // set buttin pin to INPUT
  pinMode(button, INPUT);
  
               // initialize random seed by noise from analog pin 0 (should be unconnected)
  randomSeed(analogRead(0));

               // if we're debugging, connect to serial 
    #ifdef DEBUG
    Serial.begin(9600);
    #endif
  }

void buildUpTension() {
  // light LEDs from left to right and back to build up tension
  // while waiting for the dice to be thrown
  // left to right

    for (int i=first; i<=sixth; i++) {
    if (i!=first) {
    digitalWrite(i-1, LOW);
    }

    digitalWrite(i, HIGH);
    delay(100);
  }

  // right to left
    for (int i=sixth; i>=first; i--) {
    if (i!=sixth) {
    digitalWrite(i+1, LOW);
    }
    digitalWrite(i, HIGH);
    delay(100);
  }
}

void showNumber(int number) {
    digitalWrite(first, HIGH);
    if (number >= 2) {
    digitalWrite(second, HIGH);
  }
    if (number >= 3) {
    digitalWrite(third, HIGH);    
  }
    if (number >= 4) {
    digitalWrite(fourth, HIGH);    
  }
    if (number >= 5) {
    digitalWrite(fifth, HIGH);    
  }
    if (number == 6) {
    digitalWrite(sixth, HIGH);    
  }
}

int throwDice() {
                        // get a random number in the range [1,6]
  int randNumber = random(1,7);
  
    #ifdef DEBUG
    Serial.println(randNumber);
    #endif
  
    return randNumber;
}

void setAllLEDs(int value) {
    for (int i=first; i<=sixth; i++) {
    digitalWrite(i, value);
  }
}

void loop() {
                   // if button is pressed - throw the dice
    pressed = digitalRead(button);

    if (pressed == HIGH) {
    // remove previous number
    setAllLEDs(LOW);
    
    buildUpTension();
    int thrownNumber = throwDice();
    showNumber(thrownNumber);
  } 

}