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LCD and IR Receiver Arduino Code

  LiquidCrystal Library - Hello World

 Demonstrates the use a 16x2 LCD display.  The LiquidCrystal
 library works with all LCD displays that are compatible with the
 Hitachi HD44780 driver. There are many of them out there, and you
 can usually tell them by the 16-pin interface.

 This sketch prints "Hello World!" to the LCD
 and shows the time.

  The circuit:
 * LCD RS pin to digital pin 12
 * LCD Enable pin to digital pin 11
 * LCD D4 pin to digital pin 5
 * LCD D5 pin to digital pin 4
 * LCD D6 pin to digital pin 3
 * LCD D7 pin to digital pin 2
 * LCD R/W pin to ground
 * 10K resistor:
 * ends to +5V and ground
 * wiper to LCD VO pin (pin 3)

 Library originally added 18 Apr 2008
 by David A. Mellis
 library modified 5 Jul 2009
 by Limor Fried (
 example added 9 Jul 2009
 by Tom Igoe
 modified 22 Nov 2010
 by Tom Igoe

 This example code is in the public domain.
/*Infra Red Reciever for use with IR Remote control
added by Kurt McKelvey, october 2013 using the IRremote library written by Ken Shirrif, which makes it possible to obtain and use IR signals
from a receiver and be able to display information to the LCD based
on those signals, as well as output through the serial channel.
only modification to the above wiring is the IR reciever and an
optional LED for visual confirmation.
*IR communication pin to digital pin 10 of arduino (pwm)
*IR + to arduino 5v
*IR ground to arduino ground
*LED + to Digital pin 6 of arduino(pwm)
*LED - goes through 330 ohm resistor to ground
// include the library code:
#include <LiquidCrystal.h>
#include <IRremote.h>
int LED_PIN =6;
int RECV_PIN = 10;
IRrecv irrecv(RECV_PIN);
decode_results results;
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
  // Print a message to the LCD.
  lcd.print("hello, world!");
  pinMode(LED_PIN, OUTPUT);
void loop() {
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):
  lcd.setCursor(0, 1);
  digitalWrite(LED_PIN, LOW);
  // print the number of seconds since reset: (disabled)

  if (irrecv.decode(&results)) {
    digitalWrite(LED_PIN, HIGH);
    if(results.value != 4294967295)
      Serial.println(results.value, HEX);
      lcd.print(results.value, HEX);
     digitalWrite(LED_PIN, HIGH);
    irrecv.resume(); // Receive the next value

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