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+/*
+  LiquidCrystal Library - scrollDisplayLeft() and scrollDisplayRight()
+ 
+ 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 uses the
+ scrollDisplayLeft() and scrollDisplayRight() methods to scroll
+ the text.
+ 
+  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
+ * 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 (http://www.ladyada.net)
+ example added 9 Jul 2009
+ by Tom Igoe 
+ 
+ http://www.arduino.cc/en/Tutorial/LiquidCrystal
+ */
+
+// include the library code:
+#include <LiquidCrystal.h>
+
+// 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 rows and columns: 
+  lcd.begin(2, 16);
+  lcd.setCursor(0,7);
+  // Print a message to the LCD.
+  lcd.print("hello, world!");
+}
+
+void loop() {
+  // scroll 27 positions (display length + string length) to the left:
+  for (int positionCounter = 0; positionCounter < 27; positionCounter++) {
+    // scroll one position left:
+    lcd.scrollDisplayLeft(); 
+    // wait a bit:
+    delay(200);
+  }
+
+  // scroll 27 positions (display length + string length) to the right:
+  for (int positionCounter = 0; positionCounter < 27; positionCounter++) {
+    // scroll one position right:
+    lcd.scrollDisplayRight(); 
+    // wait a bit:
+    delay(200);
+  }
+}
+