Make the formatting of opening comments of built-in examples consistent

Author: per1234

examples/01.Basics/AnalogReadSerial/AnalogReadSerial.ino

@@ -1,10 +1,13 @@
 /*
   AnalogReadSerial
+
   Reads an analog input on pin 0, prints the result to the Serial Monitor.
-  Graphical representation is available using Serial Plotter (Tools > Serial Plotter menu)
+  Graphical representation is available using Serial Plotter (Tools > Serial Plotter menu).
   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.
+
+  http://www.arduino.cc/en/Tutorial/AnalogReadSerial
 */
 
 // the setup routine runs once when you press reset:

examples/01.Basics/Blink/Blink.ino

@@ -1,5 +1,6 @@
 /*
   Blink
+
   Turns an LED on for one second, then off for one second, repeatedly.
 
   Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
@@ -8,18 +9,17 @@
   If you want to know what pin the on-board LED is connected to on your Arduino model, check
   the Technical Specs of your board at https://www.arduino.cc/en/Main/Products
 
-  This example code is in the public domain.
-
   modified 8 May 2014
   by Scott Fitzgerald
-
   modified 2 Sep 2016
   by Arturo Guadalupi
-
   modified 8 Sep 2016
   by Colby Newman
-*/
 
+  This example code is in the public domain.
+
+  http://www.arduino.cc/en/Tutorial/Blink
+*/
 
 // the setup function runs once when you press reset or power the board
 void setup() {

examples/01.Basics/DigitalReadSerial/DigitalReadSerial.ino

@@ -1,8 +1,11 @@
 /*
   DigitalReadSerial
+
   Reads a digital input on pin 2, prints the result to the Serial Monitor
 
   This example code is in the public domain.
+
+  http://www.arduino.cc/en/Tutorial/DigitalReadSerial
 */
 
 // digital pin 2 has a pushbutton attached to it. Give it a name:

examples/01.Basics/Fade/Fade.ino

@@ -11,6 +11,8 @@
   a "~" sign, like ~3, ~5, ~6, ~9, ~10 and ~11.
 
   This example code is in the public domain.
+
+  http://www.arduino.cc/en/Tutorial/Fade
 */
 
 int led = 9;           // the PWM pin the LED is attached to

examples/01.Basics/ReadAnalogVoltage/ReadAnalogVoltage.ino

@@ -1,10 +1,13 @@
 /*
   ReadAnalogVoltage
+
   Reads an analog input on pin 0, converts it to voltage, and prints the result to the Serial Monitor.
-  Graphical representation is available using Serial Plotter (Tools > Serial Plotter menu)
+  Graphical representation is available using Serial Plotter (Tools > Serial Plotter menu).
   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.
+
+  http://www.arduino.cc/en/Tutorial/ReadAnalogVoltage
 */
 
 // the setup routine runs once when you press reset:

examples/02.Digital/BlinkWithoutDelay/BlinkWithoutDelay.ino

@@ -1,4 +1,5 @@
-/* Blink without Delay
+/*
+  Blink without Delay
 
   Turns on and off a light emitting diode (LED) connected to a digital
   pin, without using the delay() function.  This means that other code
@@ -7,10 +8,10 @@
   The circuit:
   - Use the onboard LED.
   - Note: Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
-   it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
-   the correct LED pin independent of which board is used.
-   If you want to know what pin the on-board LED is connected to on your Arduino model, check
-   the Technical Specs of your board at https://www.arduino.cc/en/Main/Products
+    it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
+    the correct LED pin independent of which board is used.
+    If you want to know what pin the on-board LED is connected to on your Arduino model, check
+    the Technical Specs of your board at https://www.arduino.cc/en/Main/Products
 
   created 2005
   by David A. Mellis
@@ -21,7 +22,6 @@
   modified 9 Jan 2017
   by Arturo Guadalupi
 
-
   This example code is in the public domain.
 
   http://www.arduino.cc/en/Tutorial/BlinkWithoutDelay

examples/02.Digital/Button/Button.ino

@@ -4,15 +4,13 @@
   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.
-
+    attached to pin 13.
 
   created 2005
   by DojoDave <http://www.0j0.org>

examples/02.Digital/Debounce/Debounce.ino

@@ -9,13 +9,12 @@
   The circuit:
   - LED attached from pin 13 to ground
   - pushbutton attached from pin 2 to +5V
-  - 10K resistor attached from pin 2 to ground
+  - 10 kilohm resistor attached from pin 2 to ground
 
   - Note: On most Arduino boards, there is already an LED on the board
-  connected to pin 13, so you don't need any extra components for this example.
+    connected to pin 13, so you don't need any extra components for this example.
 
-
-  created 21 November 2006
+  created 21 Nov 2006
   by David A. Mellis
   modified 30 Aug 2011
   by Limor Fried
@@ -24,7 +23,6 @@
   modified 30 Aug 2016
   by Arturo Guadalupi
 
-
   This example code is in the public domain.
 
   http://www.arduino.cc/en/Tutorial/Debounce

examples/02.Digital/DigitalInputPullup/DigitalInputPullup.ino

@@ -5,20 +5,19 @@
   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
+  - 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
+  created 14 Mar 2012
   by Scott Fitzgerald
 
-  http://www.arduino.cc/en/Tutorial/InputPullupSerial
-
-  This example code is in the public domain
+  This example code is in the public domain.
 
+  http://www.arduino.cc/en/Tutorial/InputPullupSerial
 */
 
 void setup() {

examples/02.Digital/StateChangeDetection/StateChangeDetection.ino

@@ -11,7 +11,7 @@
 
   The circuit:
   - pushbutton attached to pin 2 from +5V
-  - 10K resistor attached to pin 2 from ground
+  - 10 kilohm resistor attached to pin 2 from ground
   - LED attached from pin 13 to ground (or use the built-in LED on
     most Arduino boards)
 
@@ -22,7 +22,6 @@
   This example code is in the public domain.
 
   http://www.arduino.cc/en/Tutorial/ButtonStateChange
-
 */
 
 // this constant won't change:

examples/02.Digital/toneKeyboard/toneKeyboard.ino

@@ -1,12 +1,12 @@
 /*
-  keyboard
+  Keyboard
 
   Plays a pitch that changes based on a changing analog input
 
   circuit:
-  - 3 force-sensing resistors from +5V to analog in 0 through 5
-  - 3 10K resistors from analog in 0 through 5 to ground
-  - 8-ohm speaker on digital pin 8
+  - three force-sensing resistors from +5V to analog in 0 through 5
+  - three 10 kilohm resistors from analog in 0 through 5 to ground
+  - 8 ohm speaker on digital pin 8
 
   created 21 Jan 2010
   modified 9 Apr 2012
@@ -15,7 +15,6 @@
   This example code is in the public domain.
 
   http://www.arduino.cc/en/Tutorial/Tone3
-
 */
 
 #include "pitches.h"

examples/02.Digital/toneMelody/toneMelody.ino

@@ -4,7 +4,7 @@
   Plays a melody
 
   circuit:
-  - 8-ohm speaker on digital pin 8
+  - 8 ohm speaker on digital pin 8
 
   created 21 Jan 2010
   modified 30 Aug 2011
@@ -13,8 +13,8 @@
   This example code is in the public domain.
 
   http://www.arduino.cc/en/Tutorial/Tone
-
 */
+
 #include "pitches.h"
 
 // notes in the melody:

examples/02.Digital/toneMultiple/toneMultiple.ino

@@ -4,16 +4,15 @@
   Plays multiple tones on multiple pins in sequence
 
   circuit:
-  - 3 8-ohm speaker on digital pins 6, 7, and 8
+  - three 8 ohm speakers on digital pins 6, 7, and 8
 
-  created 8 March 2010
+  created 8 Mar 2010
   by Tom Igoe
   based on a snippet from Greg Borenstein
 
   This example code is in the public domain.
 
   http://www.arduino.cc/en/Tutorial/Tone4
-
 */
 
 void setup() {

examples/02.Digital/tonePitchFollower/tonePitchFollower.ino

@@ -4,9 +4,9 @@
   Plays a pitch that changes based on a changing analog input
 
   circuit:
-  - 8-ohm speaker on digital pin 9
+  - 8 ohm speaker on digital pin 9
   - photoresistor on analog 0 to 5V
-  - 4.7K resistor on analog 0 to ground
+  - 4.7 kilohm resistor on analog 0 to ground
 
   created 21 Jan 2010
   modified 31 May 2012
@@ -15,10 +15,8 @@
   This example code is in the public domain.
 
   http://www.arduino.cc/en/Tutorial/Tone2
-
 */
 
-
 void setup() {
   // initialize serial communications (for debugging only):
   Serial.begin(9600);

examples/03.Analog/AnalogInOutSerial/AnalogInOutSerial.ino

@@ -17,6 +17,7 @@
 
   This example code is in the public domain.
 
+  http://www.arduino.cc/en/Tutorial/AnalogInOutSerial
 */
 
 // These constants won't change.  They're used to give names

examples/03.Analog/AnalogInput/AnalogInput.ino

@@ -1,30 +1,30 @@
 /*
   Analog Input
+
   Demonstrates analog input by reading an analog sensor on analog pin 0 and
   turning on and off a light emitting diode(LED) connected to digital pin 13.
   The amount of time the LED will be on and off depends on
   the value obtained by analogRead().
 
   The circuit:
-  - Potentiometer attached to analog input 0
-  - center pin of the potentiometer to the analog pin
-  - one side pin (either one) to ground
-  - the other side pin to +5V
-  - LED anode (long leg) attached to digital output 13
-  - LED cathode (short leg) attached to ground
+  - potentiometer
+    center pin of the potentiometer to the analog input 0
+    one side pin (either one) to ground
+    the other side pin to +5V
+  - LED
+    anode (long leg) attached to digital output 13
+    cathode (short leg) attached to ground
 
   - Note: because most Arduinos have a built-in LED attached
-  to pin 13 on the board, the LED is optional.
-
+    to pin 13 on the board, the LED is optional.
 
-  Created by David Cuartielles
+  created by David Cuartielles
   modified 30 Aug 2011
   By Tom Igoe
 
   This example code is in the public domain.
 
   http://www.arduino.cc/en/Tutorial/AnalogInput
-
 */
 
 int sensorPin = A0;    // select the input pin for the potentiometer

examples/03.Analog/AnalogWriteMega/AnalogWriteMega.ino

@@ -12,7 +12,9 @@
 
   This example code is in the public domain.
 
+  http://www.arduino.cc/en/Tutorial/AnalogWriteMega
 */
+
 // These constants won't change.  They're used to give names
 // to the pins used:
 const int lowestPin = 2;

examples/03.Analog/Calibration/Calibration.ino

@@ -12,18 +12,17 @@
   maximum low and listen for anything higher as the new maximum.
 
   The circuit:
-  - Analog sensor (potentiometer will do) attached to analog input 0
+  - analog sensor (potentiometer will do) attached to analog input 0
   - LED attached from digital pin 9 to ground
 
   created 29 Oct 2008
-  By David A Mellis
+  by David A Mellis
   modified 30 Aug 2011
-  By Tom Igoe
-
-  http://www.arduino.cc/en/Tutorial/Calibration
+  by Tom Igoe
 
   This example code is in the public domain.
 
+  http://www.arduino.cc/en/Tutorial/Calibration
 */
 
 // These constants won't change:

examples/03.Analog/Fading/Fading.ino

@@ -6,18 +6,16 @@
   The circuit:
   - LED attached from digital pin 9 to ground.
 
-  Created 1 Nov 2008
-  By David A. Mellis
+  created 1 Nov 2008
+  by David A. Mellis
   modified 30 Aug 2011
-  By Tom Igoe
-
-  http://www.arduino.cc/en/Tutorial/Fading
+  by Tom Igoe
 
   This example code is in the public domain.
 
+  http://www.arduino.cc/en/Tutorial/Fading
 */
 
-
 int ledPin = 9;    // LED connected to digital pin 9
 
 void setup() {