====== Beispiel-Programme und -Aufbauten ======

===== Blink-LED am Arduino =====

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===== LED mit Taster am Arduino =====

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<code cpp>
/*
  Button

  Turns on and off a light emitting diode(LED) connected to digital pin 13,
  when pressing a pushbutton attached to pin 2.

  The circuit:
  - LED attached from pin 13 to ground
  - pushbutton attached to pin 2 from +5V
  - 10K resistor attached to pin 2 from ground

  - Note: on most Arduinos there is already an LED on the board
    attached to pin 13.

  created 2005
  by DojoDave <http://www.0j0.org>
  modified 30 Aug 2011
  by Tom Igoe

  This example code is in the public domain.

  http://www.arduino.cc/en/Tutorial/Button
*/

int buttonPin = 2;     // the number of the pushbutton pin
int ledPin =  13;      // the number of the LED pin

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

void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin, INPUT);
}

void loop() {
  buttonState = digitalRead(buttonPin);

  if (buttonState == HIGH) {
    digitalWrite(ledPin, HIGH);
  } else {
    digitalWrite(ledPin, LOW);
  }
}
</code>

===== LED-Lauflicht am Arduino =====

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===== Ampel mit dem Arduino =====

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===== Einfacher Beispiel Sketch zur Servo-Steuerung =====

<code cpp>
#include <Servo.h>

Servo MeinServo;
int Position = 0;

void setup() {
  // put your setup code here, to run once:
  MeinServo.attach(9); // Servo hängt an Pin 9
}

void loop() {
  // put your main code here, to run repeatedly:
  MeinServo.write(Position);
  delay(1000);
  MeinServo.write(Position + 45);
  delay(1000);
  MeinServo.write(Position + 90);
  delay(1000);
  MeinServo.write(Position + 135);
  delay(1000);
}
</code>

===== Erweiterter Beispiel-Sketch zu Servo-Steuerung =====

<code cpp>
#include <Servo.h>

// Servo dem Arduino bekannt geben
Servo servoMotor;

int Sensor = A0;
int DigitalPin = 7;
int SensorWert = 0;


void setup() {
  // put your setup code here, to run once:
  pinMode(DigitalPin, OUTPUT);
  Serial.begin(9600); 
  
  // Servo-Motor an Pin 9 angeschlossen
  servoMotor.attach(9);
}

void loop() {
  // put your main code here, to run repeatedly:
  SensorWert = analogRead(Sensor);

  // Trick 17 von Olaf
  digitalWrite(DigitalPin, HIGH);
  delay(SensorWert);
  digitalWrite(DigitalPin, LOW);
  delay(SensorWert);

  Serial.println(SensorWert, DEC);

  if (SensorWert < 100) {
    servoMotor.write(45);
    delay(1000);
    servoMotor.write(0);
    delay(1000);
  } 
  
  servoMotor.write(90);
}
</code>


=====  LED-Steuerung mit Poti =====

<code cpp>
int sensorPin = A0; // select the input pin for the potentiometer
int ledPin = 9; // select the pin for the LED
int sensorValue = 0; // variable to store the value coming from the sensor
 
void setup () 
{
  pinMode (ledPin, OUTPUT);
  Serial.begin (9600);
}
 
void loop () 
{
  sensorValue = analogRead (sensorPin);
  digitalWrite (ledPin, HIGH);
  delay (sensorValue);
  digitalWrite (ledPin, LOW);
  delay (sensorValue);
  Serial.println (sensorValue, DEC);
}
</code>