add Liquid Crystal I2C Library

libraries/Arduino-LiquidCrystal-I2C-library-master/examples/BlinkingCursor/BlinkingCursor.ino

@@ -0,0 +1,32 @@
+#include <Wire.h> 
+#include <LiquidCrystal_I2C.h>
+
+// Set the LCD address to 0x27 for a 16 chars and 2 line display
+LiquidCrystal_I2C lcd(0x27, 16, 2);
+
+void setup()
+{
+	// initialize the LCD
+	lcd.begin();
+}
+
+void loop()
+{
+	bool blinking = true;
+	lcd.cursor();
+
+	while (1) {
+		if (blinking) {
+			lcd.clear();
+			lcd.print("No cursor blink");
+			lcd.noBlink();
+			blinking = false;
+		} else {
+			lcd.clear();
+			lcd.print("Cursor blink");
+			lcd.blink();
+			blinking = true;
+		}
+		delay(4000);
+	}
+}

libraries/Arduino-LiquidCrystal-I2C-library-master/examples/CustomChars/CustomChars.ino

@@ -0,0 +1,65 @@
+#include <Wire.h>
+#include <LiquidCrystal_I2C.h>
+
+uint8_t bell[8]  = {0x4, 0xe, 0xe, 0xe, 0x1f, 0x0, 0x4};
+uint8_t note[8]  = {0x2, 0x3, 0x2, 0xe, 0x1e, 0xc, 0x0};
+uint8_t clock[8] = {0x0, 0xe, 0x15, 0x17, 0x11, 0xe, 0x0};
+uint8_t heart[8] = {0x0, 0xa, 0x1f, 0x1f, 0xe, 0x4, 0x0};
+uint8_t duck[8]  = {0x0, 0xc, 0x1d, 0xf, 0xf, 0x6, 0x0};
+uint8_t check[8] = {0x0, 0x1 ,0x3, 0x16, 0x1c, 0x8, 0x0};
+uint8_t cross[8] = {0x0, 0x1b, 0xe, 0x4, 0xe, 0x1b, 0x0};
+uint8_t retarrow[8] = {	0x1, 0x1, 0x5, 0x9, 0x1f, 0x8, 0x4};
+
+// Set the LCD address to 0x27 for a 16 chars and 2 line display
+LiquidCrystal_I2C lcd(0x27, 16, 2);
+
+void setup()
+{
+	lcd.begin();
+	lcd.backlight();
+
+	lcd.createChar(0, bell);
+	lcd.createChar(1, note);
+	lcd.createChar(2, clock);
+	lcd.createChar(3, heart);
+	lcd.createChar(4, duck);
+	lcd.createChar(5, check);
+	lcd.createChar(6, cross);
+	lcd.createChar(7, retarrow);
+	lcd.home();
+
+	lcd.print("Hello world...");
+	lcd.setCursor(0, 1);
+	lcd.print(" i ");
+	lcd.write(3);
+	lcd.print(" arduinos!");
+	delay(5000);
+	displayKeyCodes();
+}
+
+// display all keycodes
+void displayKeyCodes(void) {
+	uint8_t i = 0;
+
+	while (1) {
+		lcd.clear();
+		lcd.print("Codes 0x");
+		lcd.print(i, HEX);
+		lcd.print("-0x");
+		lcd.print(i + 16, HEX);
+		lcd.setCursor(0, 1);
+
+		for (int j = 0; j < 16; j++) {
+			lcd.write(i + j);
+		}
+		i += 16;
+
+		delay(4000);
+	}
+}
+
+void loop()
+{
+	// Do nothing here...
+}
+

libraries/Arduino-LiquidCrystal-I2C-library-master/examples/HelloWorld/HelloWorld.ino

@@ -0,0 +1,20 @@
+#include <Wire.h> 
+#include <LiquidCrystal_I2C.h>
+
+// Set the LCD address to 0x27 for a 16 chars and 2 line display
+LiquidCrystal_I2C lcd(0x27, 16, 2);
+
+void setup()
+{
+	// initialize the LCD
+	lcd.begin();
+
+	// Turn on the blacklight and print a message.
+	lcd.backlight();
+	lcd.print("Hello, world!");
+}
+
+void loop()
+{
+	// Do nothing here...
+}

libraries/Arduino-LiquidCrystal-I2C-library-master/examples/SerialDisplay/SerialDisplay.ino

@@ -0,0 +1,34 @@
+/**
+ * Displays text sent over the serial port (e.g. from the Serial Monitor) on
+ * an attached LCD.
+ */
+#include <Wire.h> 
+#include <LiquidCrystal_I2C.h>
+
+// Set the LCD address to 0x27 for a 16 chars and 2 line display
+LiquidCrystal_I2C lcd(0x27, 16, 2);
+
+void setup()
+{
+	lcd.begin();
+	lcd.backlight();
+  
+	// Initialize the serial port at a speed of 9600 baud
+	Serial.begin(9600);
+}
+
+void loop()
+{
+	// If characters arrived over the serial port...
+	if (Serial.available()) {
+		// Wait a bit for the entire message to arrive
+		delay(100);
+		// Clear the screen
+		lcd.clear();
+
+		// Write all characters received with the serial port to the LCD.
+		while (Serial.available() > 0) {
+			lcd.write(Serial.read());
+		}
+	}
+}