Pulsanti
Esercizio 1

In questo esercizio premendo un pulsante accendiamo il primo diodo LED, lasciando il pulsante il diodo LED si spegne.

Sketch dell'esercizio 

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// Esercizio 1 - PULSANTI
// set pin numbers:
const int buttonPin = 2;     // the number of the pushbutton pin
const int ledPin = 4;      // the number of the LED pin

// variable
int buttonState = 0;         // variable for reading the pushbutton status

void setup() {
  // initialize the LED pin as an output:
  pinMode(ledPin, OUTPUT);
  // initialize the pushbutton pin as an input:
  pinMode(buttonPin, INPUT);
}

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) {
    // turn LED on:
    digitalWrite(ledPin, HIGH);
  } else {
    // turn LED off:
    digitalWrite(ledPin, LOW);
  }
}
©informatici.pietrocoppo.net

Pulsanti
Esercizio 2

In questo esercizio premendo il primo pulsante accendiamo il primo diodo LED, ripremendo il pulsante lo spegniamo.

Sketch dell'esercizio 

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// Esercizio 2 - PULSANTI
int inPin = 2;         // the number of the input pin
int outPin = 4;        // the number of the output pin

int state = HIGH;      // the current state of the output pin
int reading;           // the current reading from the input pin
int previous = LOW;    // the previous reading from the input pin

// the follow variables are long's because the time, measured in miliseconds,
// will quickly become a bigger number than can be stored in an int.
long time = 0;         // the last time the output pin was toggled
long debounce = 300;   // the debounce time, increase if the output flickers

void setup()
{
  pinMode(inPin, INPUT);
  pinMode(outPin, OUTPUT);
}

void loop()
{
  reading = digitalRead(inPin);

  // if the input just went from LOW and HIGH and we've waited long enough
  // to ignore any noise on the circuit, toggle the output pin and remember
  // the time
  if (reading == HIGH && previous == LOW && millis() - time > debounce) {
    if (state == HIGH)
      state = LOW;
    else
      state = HIGH;

    time = millis();
        
  }
  previous = reading;
  digitalWrite(outPin, state);

  
}
©informatici.pietrocoppo.net

Pulsanti
Esercizio 3

In questo esercizio premendo il primo pulsante accendiamo il primo diodo LED. Premendo il secondo pulsante invece lo spegniamo.

Sketch dell'esercizio 

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// Esercizio 3 - PULSANTI
int inPin = 2;         // the number of the input pin
int inPin2 = 3;         // the number of the input pin
int outPin = 4;       // the number of the output pin

int state = HIGH;      // the current state of the output pin
int reading;           // the current reading from the input pin
int previous = LOW;    // the previous reading from the input pin

// the follow variables are long's because the time, measured in miliseconds,
// will quickly become a bigger number than can be stored in an int.
long time = 0;         // the last time the output pin was toggled
long debounce = 200;   // the debounce time, increase if the output flickers

void setup()
{
  pinMode(inPin, INPUT);
  pinMode(inPin2, INPUT);
  pinMode(outPin, OUTPUT);
}

void loop()
{
  if (digitalRead(outPin) == HIGH) {
  reading = digitalRead(inPin);
  }
  else {
    reading = digitalRead(inPin2);
  }
  // if the input just went from LOW and HIGH and we've waited long enough
  // to ignore any noise on the circuit, toggle the output pin and remember
  // the time
  if (reading == HIGH && previous == LOW && millis() - time > debounce) {
    if (state == HIGH)
      state = LOW;
    else
      state = HIGH;

    time = millis();    
  }

  digitalWrite(outPin, state);

  previous = reading;
}
©informatici.pietrocoppo.net

Pulsanti
Esercizio 4

In questo esercizio premendo il primo pulsante accendiamo il primo diodo LED, mentre premendo il secondo pulsante accendiamo il secondo diodo LED.

Sketch dell'esercizio 

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// Esercizio 4 - PULSANTI
int pinPrimo = 2;
int pinSecondo = 3;
int pinLed = 4;
int pinLedDue = 5;
int statoUno;
int statoDue0;

void setup() {
    pinMode(pinLed,OUTPUT);
    pinMode(pinLedDue,OUTPUT);
    pinMode(pinPrimo,INPUT);
    pinMode(pinSecondo,INPUT);
}
void loop() {
  statoUno = digitalRead(pinPrimo);
  statoDue0 = digitalRead(pinSecondo);
  if (statoUno == HIGH) {
    digitalWrite(pinLed, HIGH);
  }
  else {
    digitalWrite(pinLed,LOW);
  }
  if (statoDue0 == HIGH) {
    digitalWrite(pinLedDue,HIGH);
  }
  else {
    digitalWrite(pinLedDue,LOW);
  }   
}
©informatici.pietrocoppo.net