Accensione e spegnimanto di un LED utilizzando variabili
per impostare la velocita' del lampeggio.
- Turns on an LED on for one second, then off for one second, repeatedly.
-
- This example code is in the public domain.
*/
// //////////////
// Dichiarazione variabili
-// Pin 13 has an LED connected on most Arduino boards.
-// give it a name:
+// Pin 13 ha un LED preconfigurato su molte schede Arduino
int led = 13;
-int breve = 200; // Variabile richiambile nel corso dell'esecuzione
-int lunga = 1000;
+int breve = 100; // Variabile richiambile nel corso dell'esecuzione
+int lunga = 400;
// /////////////////
-// Setup: eseguita una volta sola
+// Setup: eseguita una volta sola all'accensione della scheda
void setup() {
- // initialize the digital pin as an output.
+ // Inizializziamo il PIN 13 come OUTPUT
pinMode(led, OUTPUT);
}
// ///////////////
-// loop
-// the loop routine runs over and over again forever:
+// loop: Le istruzioni vengono eseguite all'infinito
void loop() {
digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level)
+ delay(breve +40); // wait for a second
+ digitalWrite(led, LOW); // turn the LED off by making the voltage LOW
+ delay(breve +40); // wait for a second
+
+ digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level)
delay(breve); // wait for a second
digitalWrite(led, LOW); // turn the LED off by making the voltage LOW
delay(breve); // wait for a second
-
- digitalWrite(red, HIGH); // turn the LED on (HIGH is the voltage level)
+
+ digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level)
+ delay(breve -40)
+ ; // wait for a second
+ digitalWrite(led, LOW); // turn the LED off by making the voltage LOW
+ delay(breve -40); // wait for a second
+
+ digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level)
delay(lunga); // wait for a second
- digitalWrite(red, LOW); // turn the LED off by making the voltage LOW
+ digitalWrite(led, LOW); // turn the LED off by making the voltage LOW
delay(lunga);
}