updated examples and libraries for Arduino 1.0.5

Author: tzikis

examples/01.Basics/AnalogReadSerial/AnalogReadSerial.ino

@@ -0,0 +1,22 @@
+/*
+  AnalogReadSerial
+  Reads an analog input on pin 0, prints the result to the serial monitor.
+  Attach the center pin of a potentiometer to pin A0, and the outside pins to +5V and ground.
+ 
+ This example code is in the public domain.
+ */
+
+// the setup routine runs once when you press reset:
+void setup() {
+  // initialize serial communication at 9600 bits per second:
+  Serial.begin(9600);
+}
+
+// the loop routine runs over and over again forever:
+void loop() {
+  // read the input on analog pin 0:
+  int sensorValue = analogRead(A0);
+  // print out the value you read:
+  Serial.println(sensorValue);
+  delay(1);        // delay in between reads for stability
+}

examples/1.Basics/BareMinimum/BareMinimum.ino examples/01.Basics/BareMinimum/BareMinimum.ino

@@ -0,0 +1,24 @@
+/*
+  Blink
+  Turns on an LED on for one second, then off for one second, repeatedly.
+ 
+  This example code is in the public domain.
+ */
+ 
+// Pin 13 has an LED connected on most Arduino boards.
+// give it a name:
+int led = 13;
+
+// the setup routine runs once when you press reset:
+void setup() {                
+  // initialize the digital pin as an output.
+  pinMode(led, OUTPUT);     
+}
+
+// the loop routine runs over and over again forever:
+void loop() {
+  digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
+  delay(1000);               // wait for a second
+  digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
+  delay(1000);               // wait for a second
+}

examples/01.Basics/Blink/Blink.ino

@@ -0,0 +1,29 @@
+/*
+  DigitalReadSerial
+ Reads a digital input on pin 2, prints the result to the serial monitor 
+ 
+ This example code is in the public domain.
+ */
+
+// digital pin 2 has a pushbutton attached to it. Give it a name:
+int pushButton = 2;
+
+// the setup routine runs once when you press reset:
+void setup() {
+  // initialize serial communication at 9600 bits per second:
+  Serial.begin(9600);
+  // make the pushbutton's pin an input:
+  pinMode(pushButton, INPUT);
+}
+
+// the loop routine runs over and over again forever:
+void loop() {
+  // read the input pin:
+  int buttonState = digitalRead(pushButton);
+  // print out the state of the button:
+  Serial.println(buttonState);
+  delay(1);        // delay in between reads for stability
+}
+
+
+

examples/01.Basics/DigitalReadSerial/DigitalReadSerial.ino

@@ -5,19 +5,22 @@
  using the analogWrite() function.
  
  This example code is in the public domain.
- 
  */
+
+int led = 9;           // the pin that the LED is attached to
 int brightness = 0;    // how bright the LED is
 int fadeAmount = 5;    // how many points to fade the LED by
 
+// the setup routine runs once when you press reset:
 void setup()  { 
   // declare pin 9 to be an output:
-  pinMode(9, OUTPUT);
+  pinMode(led, OUTPUT);
 } 
 
+// the loop routine runs over and over again forever:
 void loop()  { 
   // set the brightness of pin 9:
-  analogWrite(9, brightness);    
+  analogWrite(led, brightness);    
 
   // change the brightness for next time through the loop:
   brightness = brightness + fadeAmount;
@@ -29,3 +32,4 @@ void loop()  {
   // wait for 30 milliseconds to see the dimming effect    
   delay(30);                            
 }
+

examples/1.Basics/Fade/Fade.ino examples/01.Basics/Fade/Fade.ino

@@ -0,0 +1,23 @@
+/*
+  ReadAnalogVoltage
+  Reads an analog input on pin 0, converts it to voltage, and prints the result to the serial monitor.
+  Attach the center pin of a potentiometer to pin A0, and the outside pins to +5V and ground.
+ 
+ This example code is in the public domain.
+ */
+
+// the setup routine runs once when you press reset:
+void setup() {
+  // initialize serial communication at 9600 bits per second:
+  Serial.begin(9600);
+}
+
+// the loop routine runs over and over again forever:
+void loop() {
+  // read the input on analog pin 0:
+  int sensorValue = analogRead(A0);
+  // Convert the analog reading (which goes from 0 - 1023) to a voltage (0 - 5V):
+  float voltage = sensorValue * (5.0 / 1023.0);
+  // print out the value you read:
+  Serial.println(voltage);
+}

examples/01.Basics/ReadAnalogVoltage/ReadAnalogVoltage.ino

@@ -19,16 +19,18 @@
  by David A. Mellis
  modified 30 Aug 2011
  by Limor Fried
+ modified 28 Dec 2012
+ by Mike Walters
  
-This example code is in the public domain.
+ This example code is in the public domain.
  
  http://www.arduino.cc/en/Tutorial/Debounce
  */
 
 // constants won't change. They're used here to 
 // set pin numbers:
-const int buttonPin = 2;     // the number of the pushbutton pin
-const int ledPin =  13;      // the number of the LED pin
+const int buttonPin = 2;    // the number of the pushbutton pin
+const int ledPin = 13;      // the number of the LED pin
 
 // Variables will change:
 int ledState = HIGH;         // the current state of the output pin
@@ -43,6 +45,9 @@ long debounceDelay = 50;    // the debounce time; increase if the output flicker
 void setup() {
   pinMode(buttonPin, INPUT);
   pinMode(ledPin, OUTPUT);
+
+  // set initial LED state
+  digitalWrite(ledPin, ledState);
 }
 
 void loop() {
@@ -62,11 +67,20 @@ void loop() {
   if ((millis() - lastDebounceTime) > debounceDelay) {
     // whatever the reading is at, it's been there for longer
     // than the debounce delay, so take it as the actual current state:
-    buttonState = reading;
+
+    // if the button state has changed:
+    if (reading != buttonState) {
+      buttonState = reading;
+
+      // only toggle the LED if the new button state is HIGH
+      if (buttonState == HIGH) {
+        ledState = !ledState;
+      }
+    }
   }
 
-  // set the LED using the state of the button:
-  digitalWrite(ledPin, buttonState);
+  // set the LED:
+  digitalWrite(ledPin, ledState);
 
   // save the reading.  Next time through the loop,
   // it'll be the lastButtonState:

examples/2.Digital/BlinkWithoutDelay/BlinkWithoutDelay.ino examples/02.Digital/BlinkWithoutDelay/BlinkWithoutDelay.ino

@@ -0,0 +1,52 @@
+/*
+ Input Pullup Serial
+ 
+ This example demonstrates the use of pinMode(INPUT_PULLUP). It reads a 
+ digital input on pin 2 and prints the results to the serial monitor.
+ 
+ The circuit: 
+ * Momentary switch attached from pin 2 to ground 
+ * Built-in LED on pin 13
+ 
+ Unlike pinMode(INPUT), there is no pull-down resistor necessary. An internal 
+ 20K-ohm resistor is pulled to 5V. This configuration causes the input to 
+ read HIGH when the switch is open, and LOW when it is closed. 
+ 
+ created 14 March 2012
+ by Scott Fitzgerald
+ 
+ http://www.arduino.cc/en/Tutorial/InputPullupSerial
+ 
+ This example code is in the public domain
+ 
+ */
+
+void setup(){
+  //start serial connection
+  Serial.begin(9600);
+  //configure pin2 as an input and enable the internal pull-up resistor
+  pinMode(2, INPUT_PULLUP);
+  pinMode(13, OUTPUT); 
+
+}
+
+void loop(){
+  //read the pushbutton value into a variable
+  int sensorVal = digitalRead(2);
+  //print out the value of the pushbutton
+  Serial.println(sensorVal);
+  
+  // Keep in mind the pullup means the pushbutton's
+  // logic is inverted. It goes HIGH when it's open,
+  // and LOW when it's pressed. Turn on pin 13 when the 
+  // button's pressed, and off when it's not:
+  if (sensorVal == HIGH) {
+    digitalWrite(13, LOW);
+  } 
+  else {
+    digitalWrite(13, HIGH);
+  }
+}
+
+
+

examples/2.Digital/Button/Button.ino examples/02.Digital/Button/Button.ino

@@ -9,7 +9,7 @@
  * 8-ohm speaker on digital pin 8
  
  created 21 Jan 2010
- modified 30 Aug 2011
+ modified 9 Apr 2012
  by Tom Igoe 
 
 This example code is in the public domain.
@@ -41,5 +41,4 @@ void loop() {
       tone(8, notes[thisSensor], 20);
     } 
   }
-  Serial.println();
 }

examples/2.Digital/Debounce/Debounce.ino examples/02.Digital/Debounce/Debounce.ino

@@ -9,8 +9,8 @@
  * 4.7K resistor on analog 0 to ground
  
  created 21 Jan 2010
- modified 30 Aug 2011
- by Tom Igoe 
+ modified 31 May 2012
+ by Tom Igoe, with suggestion from Michael Flynn
 
 This example code is in the public domain.
  
@@ -29,14 +29,15 @@ void loop() {
   int sensorReading = analogRead(A0);
   // print the sensor reading so you know its range
   Serial.println(sensorReading);
-  // map the pitch to the range of the analog input.
+  // map the analog input range (in this case, 400 - 1000 from the photoresistor)
+  // to the output pitch range (120 - 1500Hz)
   // change the minimum and maximum input numbers below
   // depending on the range your sensor's giving:
-  int thisPitch = map(sensorReading, 400, 1000, 100, 1000);
+  int thisPitch = map(sensorReading, 400, 1000, 120, 1500);
 
   // play the pitch:
   tone(9, thisPitch, 10);
-
+  delay(1);        // delay in between reads for stability
 }
 
 

examples/02.Digital/DigitalInputPullup/DigitalInputPullup.ino

@@ -12,7 +12,7 @@
  * LED connected from digital pin 9 to ground
  
  created 29 Dec. 2008
- modified 30 Aug 2011
+ modified 9 Apr 2012
  by Tom Igoe
  
  This example code is in the public domain.
@@ -46,8 +46,8 @@ void loop() {
   Serial.print("\t output = ");      
   Serial.println(outputValue);   
 
-  // wait 10 milliseconds before the next loop
+  // wait 2 milliseconds before the next loop
   // for the analog-to-digital converter to settle
   // after the last reading:
-  delay(10);                     
+  delay(2);                     
 }

examples/2.Digital/StateChangeDetection/StateChangeDetection.ino examples/02.Digital/StateChangeDetection/StateChangeDetection.ino

@@ -10,9 +10,9 @@
     * Analog sensor (potentiometer will do) attached to analog input 0
 
   Created 22 April 2007
-  modified 30 Aug 2011
   By David A. Mellis  <[email protected]>
-
+  modified 9 Apr 2012
+  by Tom Igoe
   http://www.arduino.cc/en/Tutorial/Smoothing
   
   This example code is in the public domain.
@@ -61,7 +61,8 @@ void loop() {
   // calculate the average:
   average = total / numReadings;         
   // send it to the computer as ASCII digits
-  Serial.println(average);               
+  Serial.println(average);   
+  delay(1);        // delay in between reads for stability            
 }
 
 

examples/2.Digital/toneKeyboard/pitches.h examples/02.Digital/toneKeyboard/pitches.h

@@ -11,18 +11,21 @@
  
  created 2006
  by Nicholas Zambetti 
- modified 30 Aug 2011
+ modified 9 Apr 2012
  by Tom Igoe
  
  This example code is in the public domain.
 
  <http://www.zambetti.com> 
  
  */
-void setup() 
-{ 
+void setup() { 
+ //Initialize serial and wait for port to open:
   Serial.begin(9600); 
-
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for Leonardo only
+  }
+  
   // prints title with ending line break 
   Serial.println("ASCII Table ~ Character Map"); 
 } 
@@ -33,8 +36,7 @@ int thisByte = 33;
 // for example. '!' is the same as 33, so you could also use this:
 //int thisByte = '!';  
 
-void loop() 
-{ 
+void loop() { 
   // prints value unaltered, i.e. the raw binary version of the 
   // byte. The serial monitor interprets all bytes as 
   // ASCII, so 33, the first number,  will show up as '!' 

examples/2.Digital/toneKeyboard/toneKeyboard.ino examples/02.Digital/toneKeyboard/toneKeyboard.ino

@@ -18,7 +18,7 @@
   
  created 2006
  by David A. Mellis
- modified 30 Aug 2011
+ modified 9 Apr 2012
  by Tom Igoe and Scott Fitzgerald
  
  This example code is in the public domain.
@@ -36,7 +36,7 @@ void loop() {
   Serial.println(analogRead(A0));
   // wait a bit for the analog-to-digital converter 
   // to stabilize after the last reading:
-  delay(10);
+  delay(2);
 }
 
 /* Processing code for this example

examples/2.Digital/toneMelody/pitches.h examples/02.Digital/toneMelody/pitches.h

@@ -13,12 +13,12 @@
  Attach a MIDI cable to the jack, then to a MIDI synth, and play music.
 
  created 13 Jun 2006
- modified 30 Aug 2011
+ modified 13 Aug 2012
  by Tom Igoe 
 
  This example code is in the public domain.
  
- http://www.arduino.cc/en/Tutorial/MIDI
+ http://www.arduino.cc/en/Tutorial/Midi
  
  */