EJERCICIOS CON ARDUINO 2

 EJERCICIOS CON ARDUINO

Semáforo

Código:

void setup() {

  // set up all the LEDs as OUTPUT

  pinMode(led_red, OUTPUT);

  pinMode(led_yellow, OUTPUT);

  pinMode(led_green, OUTPUT);

}

void loop() {

  // turn the green LED on and the other LEDs off

  digitalWrite(led_red, LOW); 

  digitalWrite(led_yellow, LOW);

  digitalWrite(led_green, HIGH);

  delay(2000);    // wait 2 seconds

  

  // turn the yellow LED on and the other LEDs off

  digitalWrite(led_red, LOW);   

  digitalWrite(led_yellow, HIGH);

  digitalWrite(led_green, LOW);

  delay(1000);   // wait 1 second

  

  // turn the red LED on and the other LEDs off

  digitalWrite(led_red, HIGH);  

  digitalWrite(led_yellow, LOW);

  digitalWrite(led_green, LOW);

  delay(3000);  // wait 3 seconds        

}

Ejercicio 2: 

Código: 

// C++ code

//

int t = 100; // declare a variable to use for delay

void setup()

{

  // setup code that only runs once

  // set pins 0-7 as outputs

  pinMode(0, OUTPUT);

  pinMode(1, OUTPUT);

  pinMode(2, OUTPUT);

  pinMode(3, OUTPUT);

  pinMode(4, OUTPUT);

  pinMode(5, OUTPUT);

  pinMode(6, OUTPUT);

  pinMode(7, OUTPUT);

}

void loop()

{

  // code that loops forever

  // note that each LED requires its own line of code

  // turn pin 0 on, others low

  digitalWrite(0, HIGH);

  digitalWrite(1, LOW);

  digitalWrite(2, LOW);

  digitalWrite(3, LOW);

  digitalWrite(4, LOW);

  digitalWrite(5, LOW);

  digitalWrite(6, LOW);

  digitalWrite(7, LOW);

  delay(t); // Wait for t millisecond(s)

  // turn pin 1 on, others low

  digitalWrite(0, LOW);

  digitalWrite(1, HIGH);

  digitalWrite(2, LOW);

  digitalWrite(3, LOW);

  digitalWrite(4, LOW);

  digitalWrite(5, LOW);

  digitalWrite(6, LOW);

  digitalWrite(7, LOW);

  delay(t); // Wait for t millisecond(s)

  // turn pin 2 on, others low

  digitalWrite(0, LOW);

  digitalWrite(1, LOW);

  digitalWrite(2, HIGH);

  digitalWrite(3, LOW);

  digitalWrite(4, LOW);

  digitalWrite(5, LOW);

  digitalWrite(6, LOW);

  digitalWrite(7, LOW);

  delay(t); // Wait for t millisecond(s)

  // turn pin 3 on, others low

  digitalWrite(0, LOW);

  digitalWrite(1, LOW);

  digitalWrite(2, LOW);

  digitalWrite(3, HIGH);

  digitalWrite(4, LOW);

  digitalWrite(5, LOW);

  digitalWrite(6, LOW);

  digitalWrite(7, LOW);

  delay(t); // Wait for t millisecond(s)

  // turn pin 4 on, others low

  digitalWrite(0, LOW);

  digitalWrite(1, LOW);

  digitalWrite(2, LOW);

  digitalWrite(3, LOW);

  digitalWrite(4, HIGH);

  digitalWrite(5, LOW);

  digitalWrite(6, LOW);

  digitalWrite(7, LOW);

  delay(t); // Wait for t millisecond(s)

  // turn pin 5 on, others low

  digitalWrite(0, LOW);

  digitalWrite(1, LOW);

  digitalWrite(2, LOW);

  digitalWrite(3, LOW);

  digitalWrite(4, LOW);

  digitalWrite(5, HIGH);

  digitalWrite(6, LOW);

  digitalWrite(7, LOW);

  delay(t); // Wait for t millisecond(s)

  // turn pin 6 on, others low

  digitalWrite(0, LOW);

  digitalWrite(1, LOW);

  digitalWrite(2, LOW);

  digitalWrite(3, LOW);

  digitalWrite(4, LOW);

  digitalWrite(5, LOW);

  digitalWrite(6, HIGH);

  digitalWrite(7, LOW);

  delay(t); // Wait for t millisecond(s)

  // turn pin 7 on, others low

  digitalWrite(0, LOW);

  digitalWrite(1, LOW);

  digitalWrite(2, LOW);

  digitalWrite(3, LOW);

  digitalWrite(4, LOW);

  digitalWrite(5, LOW);

  digitalWrite(6, LOW);

  digitalWrite(7, HIGH);

  delay(t); // Wait for t millisecond(s)

}

Sensor ultrasonido:

Código: 

const int Trigger = 2;   //Pin digital 2 para el Trigger del sensor

const int Echo = 3;   //Pin digital 3 para el Echo del sensor

void setup() {

  Serial.begin(9600);//iniciailzamos la comunicación

  pinMode(Trigger, OUTPUT); //pin como salida

  pinMode(Echo, INPUT);  //pin como entrada

  digitalWrite(Trigger, LOW);//Inicializamos el pin con 0

}

void loop()

{

  long t; //timepo que demora en llegar el eco

  long d; //distancia en centimetros

  digitalWrite(Trigger, HIGH);

  delayMicroseconds(10);          //Enviamos un pulso de 10us

  digitalWrite(Trigger, LOW);

  

  t = pulseIn(Echo, HIGH); //obtenemos el ancho del pulso

  d = t/59;             //escalamos el tiempo a una distancia en cm

  

  Serial.print("Distancia: ");

  Serial.print(d);      //Enviamos serialmente el valor de la distancia

  Serial.print("cm");

  Serial.println();

  delay(100);          //Hacemos una pausa de 100ms

}