001e_Roll_The_Dice

 

- Create a project that can simulate rolling a dice. When a button is pressed the program must be able to randomly choose a number and light up the appropriate LEDs. The program ends when you press the other push button. The program should also start randomly upon turning on the Arduino on its first run.

int time = 500;

long randNumber;

int led1 = 3;

int led2 = 4; 

int led3 = 5; 

int led4 = 6; 

int led5 = 7; 

int led6 = 8; 

int led7 = 9;

int btn1 = 10;

int btn2 = 2;

int leds[] = {led1,led2,led3,led4,led5,led6,led7};

 

// the setup routine runs once when you press reset:

void setup() {

  Serial.begin(9600);

  // initialize the digital pin as an output.

  pinMode(led1, OUTPUT); 

  pinMode(led2, OUTPUT); 

  pinMode(led3, OUTPUT); 

  pinMode(led4, OUTPUT); 

  pinMode(led5, OUTPUT); 

  pinMode(led6, OUTPUT); 

  pinMode(led7, OUTPUT);

  pinMode(btn1, INPUT); 

  pinMode(btn2, INPUT);

  randomSeed(analogRead(0));

}

 

// the loop routine runs over and over again forever:

void loop() {

  if(digitalRead(btn2) == HIGH){

    TurnOffLeds();

    //delay(time);

    randNumber = random(1, 7);

    Serial.println(randNumber);

    switch (randNumber){

      case 1:

      digitalWrite(led7, HIGH);

        delay(time);

        break;

        case 2:

      digitalWrite(led5, HIGH);

        digitalWrite(led2, HIGH);

        delay(time);

        break;

        case 3:

      digitalWrite(led5, HIGH);

        digitalWrite(led2, HIGH);

        digitalWrite(led7, HIGH);

        delay(time);

        break;

        case 4:

      digitalWrite(led5, HIGH);

        digitalWrite(led1, HIGH);

        digitalWrite(led6, HIGH);

        digitalWrite(led2, HIGH);

        delay(time);

        break;

        case 5:

      digitalWrite(led5, HIGH);

        digitalWrite(led7, HIGH);

        digitalWrite(led1, HIGH);

        digitalWrite(led6, HIGH);

        digitalWrite(led2, HIGH);

        delay(time);

        break;

        case 6:

      digitalWrite(led6, HIGH);

        digitalWrite(led5, HIGH);

        digitalWrite(led3, HIGH);

        digitalWrite(led1, HIGH);

        digitalWrite(led4, HIGH);

        digitalWrite(led2, HIGH);

        delay(time);

        break;

    }

  }

  if(digitalRead(btn1) == HIGH){

    TurnOffLeds(); 

  }

}

 

void TurnOffLeds()

{

  digitalWrite(led1, LOW);

  digitalWrite(led2, LOW);

  digitalWrite(led3, LOW);

  digitalWrite(led4, LOW);

  digitalWrite(led5, LOW);

  digitalWrite(led6, LOW);

  digitalWrite(led7, LOW);

}

 

What I learned:

• I learned how to use a void function to control the LEDs on the breadboard
• Another thing I learned was to use the random function to make a random series of LEDs blink

Problems: 

• The had a problem with finding a good delay time so the LEDs blink correctly
• I also had a problem with how to wire the circuit with the LED in the middle