How to Use Arduino I2C Serial LCD 16x2 (Yellow Backlight)

9,708

27

4

Introduction: How to Use Arduino I2C Serial LCD 16x2 (Yellow Backlight)

Description

Now, with only 3 pins from microcontroller, you can display message on this LCD. Compared to parallel LCD which required at least 6 pins of I/O, this LCD offer more cost effective solution. The LCD display is two lines by 16 characters and provides basic text wrapping so that your text looks right on the display.

Feature:

1. 5V powered 2 x 16 character

2. SPI communication

3. Minimum 3 Pins interface to microcontroller

4.Compatible with all types of microcontrollers

5.Suitable for hobbyists and experts

6.Back light and contrast control is available

Step 1: MATERIAL PREPARATION

In this tutorial,the things you are needed as below:

1. I2C Serial LCD 16x2 (Yellow backlight)

2. Arduino Uno Board and USB

3.4 Male-to-Female Jumper Wire

Step 2: PIN DETAILS

You could see the pinout labeled at the back of the module. It has 4 pins that is VCC, GND,SDA and SCL.

Step 3: PIN CONNECTION

Connect I2C Serial LCD Module to Arduino UNO as following :

  • VCC to 5V
  • GND to GND
  • SDA to A4
  • SCL to A5

Then, Connect your Arduino UNO Board to your computer via USB Cable.

Step 4: Library

For this tutorial,it is necessary to download and install the "LiquidCrystal_I2C" library.LiquidCrystal_I2C is a library of Arduino which enables serial LCD 16x2 connect with Arduino.To be able to interface the serial LCD with arduino, you will have to download this library and save it into your Arduino's libraries. Download the LiquidCrystal_I2C file below >Go to document >Save the file into your Arduino Uno Library folder. Refer the image above for your references.

Step 5: SAMPLE SOURCE CODE

To get the result, please download the sample source code which is attached below and upload it into your Arduino. In this tutorial, the Arduino UNO is being used.

Step 6: RESULT

The LCD will display the text.

1 Person Made This Project!

Recommendations

  • Make It Modular: Student Design Challenge

    Make It Modular: Student Design Challenge
  • Origami Speed Challenge

    Origami Speed Challenge
  • Trash to Treasure Contest

    Trash to Treasure Contest

4 Comments

0
kardes
kardes

1 year ago

Thanks for the tutorial.
This is a useful link for who are not able to get the LCD working:
https://www.makerguides.com/character-i2c-lcd-ardu...
You can try the scanner from this link to find your device's address(mine is 0x3F), but you need to connect the LCD SDA, SCL to the SDA, SCL of the arduino and scan, in the serial monitor you will get your LCD address .
For Arduino Mega 2560, the pins are SDA 20 and SCL 21, and board has own pins, check the link.

0
akanksa285
akanksa285

2 years ago

i have done all but my lcd is not displaying anything

0
Electronicjunction
Electronicjunction

Reply 2 years ago

Hi Akansha, Can you please share your code and LCD connections ..?

0
MrPhantom1202.
MrPhantom1202.

Question 4 years ago

hello..wanna ask,why is this happen?i follow exactly the same

Capture.PNG