View source for Serial I2C 1602 16×2 Character LCD Module

==Introduction==
[[File:1602I2C 1.jpg|400px]]
[[File:1602I2C 2.jpg|400px]]

This is another great blue/yellow backlight LCD display. As the pin resources of Arduino controller is limited, your project may be not able to use normal LCD shield after connected with a certain quantity of sensors or SD card. However, with this I2C interface LCD module, you will be able to realize data display via only 2 wires. If you already has I2C devices in your project, this LCD module actually cost no more resources at all. It is fantastic for Arduino based project.

==Features==
*Interface: I2C
*I2C Address: 0x27
*Pin Definition : VCC、GND、SDA、SCL
*Back lit (Green with white char color)
*Supply voltage: 5V
*Size : 27.7mm×42.6mm
*Contrast Adjust : Through Potentiometer
*Only employ two I/O interface

==Connection diagram==
Here is pic shows how to connect an Arduino 1602 I2C module.The following is a table describing which pins on the Arduino should be connected to 1602 I2C LCD module.

[[File:1602I2C 4.jpg|450px]]

[[File:1602I2C table.jpg]]

==Contrast adjust==
[[File:1602I2C 3.jpg|400px]]

Spinnig the potentimeter clockwise is to increase contrast ,spinning unclockwise is to decrease it

==Example code==

[http://www.geeetech.com/Documents/LiquidCrystal_I2C.rar Download Arduino 1602 I2C library]  only Arduino IDE 023! 

 #include <Wire.h> 
 #include <LiquidCrystal_I2C.h>
 LiquidCrystal_I2C lcd(0x27,16,2);  // set the LCD address to 0x27 for a 16 chars and 2 line display
 void setup()
 {
  lcd.init();                      // initialize the lcd 
  // Print a message to the LCD.
  lcd.backlight();
  lcd.print("Hello, world!");
 }
 void loop()
 {
 }

==How to buy==
Click here to buy Arduino [http://www.geeetech.com/arduino-iici2ctwi-1602-serial-lcd-module-display-p-498.html Serial I2C 1602 16×2 Character LCD Module]