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2 292 octets ajoutés ,  10 juillet 2012 à 19:53
Ligne 87 : Ligne 87 :     
En guise d'alimentation externe, vous pouvez utiliser une pile de 9V pour alimenter votre Arduino et raccorder le <font color="red">(+) de l'alimentation externe</font> sur la broche Vin d'Arduino.
 
En guise d'alimentation externe, vous pouvez utiliser une pile de 9V pour alimenter votre Arduino et raccorder le <font color="red">(+) de l'alimentation externe</font> sur la broche Vin d'Arduino.
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=== Code d'exemple ===
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Le plus simple des exemple est encore le BlinkWithoutDelay ( File > Examples > Digital > BlinkWithoutDelay ) qui active et désactive régulièrement la Pin 13.
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Pour un résultat plus évident, changer la valeur de "interval" de 1000 à 5000 ms.
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En guise d'exemple, voici l'exemple BlinkWithoutDelay avec la ligne modifiée...
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<nowiki>
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/* Blink without Delay
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Turns on and off a light emitting diode(LED) connected to a digital 
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pin, without using the delay() function.  This means that other code
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can run at the same time without being interrupted by the LED code.
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The circuit:
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* LED attached from pin 13 to ground.
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* Note: on most Arduinos, there is already an LED on the board
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that's attached to pin 13, so no hardware is needed for this example.
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created 2005
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by David A. Mellis
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modified 8 Feb 2010
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by Paul Stoffregen
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This example code is in the public domain.
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http://www.arduino.cc/en/Tutorial/BlinkWithoutDelay
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*/
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// constants won't change. Used here to
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// set pin numbers:
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const int ledPin =  13;      // the number of the LED pin
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// Variables will change:
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int ledState = LOW;            // ledState used to set the LED
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long previousMillis = 0;        // will store last time LED was updated
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// the follow variables is a long because the time, measured in miliseconds,
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// will quickly become a bigger number than can be stored in an int.
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long interval = 5000;          // interval at which to blink (milliseconds)
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void setup() {
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  // set the digital pin as output:
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  pinMode(ledPin, OUTPUT);     
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}
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void loop()
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{
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  // here is where you'd put code that needs to be running all the time.
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  // check to see if it's time to blink the LED; that is, if the
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  // difference between the current time and last time you blinked
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  // the LED is bigger than the interval at which you want to
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  // blink the LED.
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  unsigned long currentMillis = millis();
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  if(currentMillis - previousMillis > interval) {
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    // save the last time you blinked the LED
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    previousMillis = currentMillis; 
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    // if the LED is off turn it on and vice-versa:
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    if (ledState == LOW)
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      ledState = HIGH;
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    else
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      ledState = LOW;
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    // set the LED with the ledState of the variable:
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    digitalWrite(ledPin, ledState);
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  }
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}
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</nowiki>
    
== Sources ==
 
== Sources ==
 
Cette section reprend quelques ressources vraiment utiles.
 
Cette section reprend quelques ressources vraiment utiles.
 
* [http://www.bristolwatch.com/ele/transistor_drivers.htm Basic Transistor Drivers for Micro-Controllers] de Lewis Loflin
 
* [http://www.bristolwatch.com/ele/transistor_drivers.htm Basic Transistor Drivers for Micro-Controllers] de Lewis Loflin
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