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 through 220 ohm resistor

  - 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.

  https://www.arduino.cc/en/Tutorial/BuiltInExamples/Button

*/

// 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

// variables will change:

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

void setup() {

  // initialize the LED pin as an output:

  pinMode(ledPin, OUTPUT);

  // initialize the pushbutton pin as an input:

  pinMode(buttonPin, INPUT);

}

void loop() {

  // read the state of the pushbutton value:

  buttonState = digitalRead(buttonPin);

  // check if the pushbutton is pressed. If it is, the buttonState is HIGH:

  if (buttonState == HIGH) {

    // turn LED on:

    digitalWrite(ledPin, HIGH);

  } else {

    // turn LED off:

    digitalWrite(ledPin, LOW);

  }

}

   Analog input, analog output, serial output

   Reads an analog input pin, maps the result to a range from 0 to 255 and uses

   the result to set the pulse width modulation (PWM) of an output pin.

   Also prints the results to the Serial Monitor.

   The circuit:

   - potentiometer connected to analog pin 0.

    Center pin of the potentiometer goes to the analog pin.

    side pins of the potentiometer go to +5V and ground

   - LED connected from digital pin 9 to ground through 220 ohm resistor

   created 29 Dec. 2008

   modified 9 Apr 2012

   by Tom Igoe

   This example code is in the public domain.

   https://www.arduino.cc/en/Tutorial/BuiltInExamples/AnalogInOutSerial

*/

// These constants won't change. They're used to give names to the pins used:

const int analogInPin = A0;   // Analog input pin that the potentiometer is attached to

const int analogOutPin = 9; // Analog output pin that the LED is attached to

int sensorValue = 0;        // value read from the pot

int outputValue = 0;        // value output to the PWM (analog out)

void setup() {

   // initialize serial communications at 9600 bps:

   Serial.begin(9600);

}

void loop() {

   // read the analog in value:

   sensorValue = analogRead(analogInPin);

   // map it to the range of the analog out:

   outputValue = map(sensorValue, 0, 1023, 0, 255);

   // change the analog out value:

   analogWrite(analogOutPin, outputValue);

   // print the results to the Serial Monitor:

   Serial.print("sensor = ");

   Serial.print(sensorValue);

   Serial.print("\t output = ");

   Serial.println(outputValue);

   // wait 2 milliseconds before the next loop for the analog-to-digital

   // converter to settle after the last reading:

   delay(2);

}

/*

   Fading

   This example shows how to fade an LED using the analogWrite() function.

   The circuit:

   - LED attached from digital pin 9 to ground through 220 ohm resistor.

   created 1 Nov 2008

   by David A. Mellis

   modified 30 Aug 2011

   by Tom Igoe

   This example code is in the public domain.

   https://www.arduino.cc/en/Tutorial/BuiltInExamples/Fading

*/

int ledPin = 9;    // LED connected to digital pin 9

void setup() {

   // nothing happens in setup

}

void loop() {

   // fade in from min to max in increments of 5 points:

   for (int fadeValue = 0 ; fadeValue <= 255; fadeValue += 5) {

    // sets the value (range from 0 to 255):

    analogWrite(ledPin, fadeValue);

    // wait for 30 milliseconds to see the dimming effect

    delay(30);

   }

   // fade out from max to min in increments of 5 points:

   for (int fadeValue = 255 ; fadeValue >= 0; fadeValue -= 5) {

    // sets the value (range from 0 to 255):

    analogWrite(ledPin, fadeValue);

    // wait for 30 milliseconds to see the dimming effect

    delay(30);

   }

}

/* Sweep

by BARRAGAN <http://barraganstudio.com>

This example code is in the public domain.

modified 8 Nov 2013

by Scott Fitzgerald

https://www.arduino.cc/en/Tutorial/LibraryExamples/Sweep

*/

#include <Servo.h>

Servo myservo;   // create servo object to control a servo

// twelve servo objects can be created on most boards

int pos = 0;    // variable to store the servo position

void setup() {

  myservo.attach(9);   // attaches the servo on pin 9 to the servo object

}

void loop() {

  for (pos = 0; pos <= 180; pos += 1) { // goes from 0 degrees to 180 degrees

    // in steps of 1 degree

    myservo.write(pos);              // tell servo to go to position in variable 'pos'

    delay(15);                       // waits 15 ms for the servo to reach the position

  }

  for (pos = 180; pos >= 0; pos -= 1) { // goes from 180 degrees to 0 degrees

    myservo.write(pos);              // tell servo to go to position in variable 'pos'

    delay(15);                       // waits 15 ms for the servo to reach the position

  }

}

LedControl lc=LedControl(12,11,13,1);

void setup()

{

  lc.shutdown(0,false);

  lc.setIntensity(0,8);

  lc.clearDisplay(0);

  lc.setRow(0,0,0xff);

  lc.setRow(0,1,B10000001);

  lc.setRow(0,2,B10100101);

  lc.setRow(0,3,B10000001);

  lc.setRow(0,4,B11000011);

  lc.setRow(0,5,B10100101);

  lc.setRow(0,6,B10011001);

  lc.setRow(0,7,0xff);

}

void loop()

{

}

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