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lib/LiquidCrystal_I2C/examples/HelloWorld/HelloWorld.ino

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+#include <Wire.h> 
+#include <LiquidCrystal_I2C.h>
+
+LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 20 chars and 4 line display
+
+void setup()
+{
+  lcd.init();                      // initialize the lcd 
+ 
+  // Print a message to the LCD.
+  lcd.backlight();
+  lcd.print("Hello, world!");
+}
+
+void loop()
+{
+}