The ultimate memory game

Placed on 2020-04-30

To begin...

To check the wiring of this project I wrote a little test code. When you press a button, the corresponding light would light up

testcode

const int BUTTON_PIN1 = 2; // definiëren van de poorten
const int BUTTON_PIN2 = 3; 
const int BUTTON_PIN3 = 4;   
const int LED_PIN1 =  5;  
const int LED_PIN2 =  6; 
const int LED_PIN3 =  7; 

int buttonState1 = 0;   //definiëren van de variable en ze instellen op 0
int buttonState2 = 0;
int buttonState3 = 0;

void setup() {
  
  pinMode(LED_PIN1, OUTPUT);   //definiëren van de outputs
  pinMode(LED_PIN2, OUTPUT);
  pinMode(LED_PIN3, OUTPUT);
  pinMode(BUTTON_PIN1, INPUT_PULLUP);   //definiëren van de inputs
  pinMode(BUTTON_PIN2, INPUT_PULLUP);
  pinMode(BUTTON_PIN3, INPUT_PULLUP);
}

void loop() {
  buttonState1 = digitalRead(BUTTON_PIN1);  //variable controleren
  buttonState2 = digitalRead(BUTTON_PIN2);
  buttonState3 = digitalRead(BUTTON_PIN3);
  
  if(buttonState1 == LOW)        
    digitalWrite(LED_PIN1, HIGH);
  else if(buttonState2 == LOW)        
    digitalWrite(LED_PIN2, HIGH);
  else if(buttonState3 == LOW)        
    digitalWrite(LED_PIN3, HIGH);
  else                           
    digitalWrite(LED_PIN1, LOW); 
    digitalWrite(LED_PIN2, LOW);
    digitalWrite(LED_PIN3, LOW); 
}

The program

First of all, we need to define all pins, this ensures that we can name the pins, and we don't have to use a pin number every time. Next we need to set which pins are input and output. Because we have opted for a 'grounded' or 'pullup' push button, we also add this. Finally, we also add our variable that we need for the buttons.

const int BUTTON_PIN1 = 2;
const int BUTTON_PIN2 = 3; 
const int BUTTON_PIN3 = 4;   
const int LED_PIN1 =  5;   
const int LED_PIN2 =  6; 
const int LED_PIN3 =  7; 

int buttonState1 = 0;   
int buttonState2 = 0;
int buttonState3 = 0;

void setup() {
  
  pinMode(LED_PIN1, OUTPUT);
  pinMode(LED_PIN2, OUTPUT);
  pinMode(LED_PIN3, OUTPUT);
  pinMode(BUTTON_PIN1, INPUT_PULLUP);
  pinMode(BUTTON_PIN2, INPUT_PULLUP);
  pinMode(BUTTON_PIN3, INPUT_PULLUP);
}

random number

To grab random LEDs we use a random number generator. The Arduino has a random number generator built in, so with a bit of code we can make 3 LEDs light up randomly. To do this we need to add a new variable to our 'define place' (from above). We call this 'randNumber'. Then we put the code at our 'setup place' randomSeed(analogRead(0));. To then get a random number we need the code randNumber = random(4); to use. The randNumber is our variable, and the 4 stands for any number between 0 and 4.

This is what our code looks like now:

const int BUTTON_PIN1 = 2;
const int BUTTON_PIN2 = 3; 
const int BUTTON_PIN3 = 4;   
const int LED_PIN1 =  5;   
const int LED_PIN2 =  6; 
const int LED_PIN3 =  7; 
long randNumber;          //<--
int buttonState1 = 0;   
int buttonState2 = 0;
int buttonState3 = 0;


void setup() {
  randomSeed(analogRead(0));   //<--
  pinMode(LED_PIN1, OUTPUT);
  pinMode(LED_PIN2, OUTPUT);
  pinMode(LED_PIN3, OUTPUT);
  pinMode(BUTTON_PIN1, INPUT_PULLUP);
  pinMode(BUTTON_PIN2, INPUT_PULLUP);
  pinMode(BUTTON_PIN3, INPUT_PULLUP);
}

Previous page 4. The wiring Current Page 5. Programming (1) Next page 6. Programming (2) 1. Introduction 2. Buttons 3. The LEDs 4. The wiring 5. Programming (1) 6. Programming (2) 7. Programming (3) 8. A housing Posted by Ward Student industrial sciences

The ultimate memory game

To begin...

testcode

The program

random number

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