<h3><span ><strong>Why does my screen not light up or display very dimly after uploading the program?</strong></span></h3>

Name: I2C 16x2(1602) LCD Display Module for Arduino
Brand: DFRobot
SKU: DFR0063
Price: 11.9 USD
Availability: InStock
Rating: 5.00 (1 reviews)

<p>Please check whether the backlight of the screen is on normally, and how to adjust the potentiometer on the back of the screen with a screwdriver until the characters are clearly displayed.</p><figure class="image"><img src="https://dfimg.dfrobot.com/628da052aa9508d63a41e164/makelog/5ca15b6d173bf8aae47404b47ba347f5_0x0.png.webp"></figure><p><br></p>

I2C 16x2(1602) LCD Display Module for Arduino

$11.90

SKU: DFR0063

Volume Discount

$11.60 2+ items
$11.40 5+ items
$11.00 10+ items

16x2 character LCD with I2C interface, adjustable contrast, and configurable address to avoid conflicts. Compatible with various Arduino models.

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Introduction

I2C 16x2 LCD Display Module for Arduino - Simple 4-Wire Text Display for Arduino Sensor Data and Project Status. This 16x2 character LCD display module adds clear text output to Arduino projects through an I2C interface. Compared with traditional parallel LCD displays, it reduces wiring to four connections: VCC, GND, SDA, and SCL, helping save Arduino I/O pins and simplify project assembly.

Connection diagram with Arduino UNO

Who This Is For

Arduino beginners learning display modules

STEM education and classroom projects

Sensor data display projects

DIY meters, counters, timers, and status panels

Projects that need a simple text display instead of a graphic screen

Core Difference

16 characters x 2 lines for clear text output

I2C interface reduces wiring to 4 pins

Configurable I2C address from 0x20 to 0x27

Adjustable contrast for clearer character visibility

Blue backlight with white characters

Compatible with common Arduino boards, including UNO, Leonardo, Mega, Micro, Nano, Mini, and more

Why Choose This Display

Traditional 1602 LCD modules often require multiple Arduino pins and more complex wiring. This I2C version is easier to connect, cleaner to build with, and better suited for projects that already use sensors, buttons, or other modules.

The configurable I2C address also helps reduce conflicts when multiple I2C devices are used in the same project, such as sensors, IMUs, accelerometers, or ultrasonic modules.

Best used for displaying temperature, humidity, distance, voltage, menu status, system messages, and other short text-based project data.

Interface diagram of 16x2 lcd module