Ks0137 keyestudio EASY plug 1602 I2C Module

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Keyestudio EASY plug 1602 LCD Module


This is a basic 16 character by 2 line LCD display with white text on blue background. On the back comes with a potentiometer to adjust the screen contrast. You can use only one line for simple connection.
Note: this module should be used together with EASY plug control board.


  • Connector: Easy plug
  • Compatible with Arduino LiquidCrystal Library
  • White text on blue background
  • 16 characters wide, 2 rows
  • I2C Address: 0x27
  • Back Light: Blue
  • Text Color: White
  • Supply Voltage: 5V
  • Adjusting contrast by a potentiometer

Technical Details

  • Dimensions: 99mm*37mm*21mm
  • Weight: 37.4g

Connect It Up

Connect the EASY Plug 1602 LCD to control board using an RJ11 cable. Then connect the control board to your PC with a USB cable.

Upload the Code

Copy and paste below code to Arduino IDE and upload.

//Compatible with the Arduino IDE 1.0
//Library version:1.1
#include<Wire.h>    // Place file “Wire.h” under the directory “library” of Arduino
#include<LiquidCrystal_I2C.h>  // Place “LiquidCrystal_I2C.h” under the directory “library” of Arduino
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
lcd.init();// Print a message to the LCD.
lcd.print("Hello, world!");
void loop()

Code to Note:
Before compile the code, do remember to put the libraries needed inside the libraries folder of Arduino IDE directory.
Download all the libraries:

What You Should See

Initially, you should see the words “hello, word!” and “keyestudio!” pop up on your LCD. Remember you can adjust the contrast using the potentiometer on the module back if you can’t make out the words clearly.


Download the PDF:
Download the libraries:

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