Why doesn't the title match the description? 20 x 4 vs 16 x 2.

It is a 4 line by 20 character display

Can the I2C address be changed?

Yes. There are three solder pad jumper areas on the I2C board that allow the changing of the address.

Is there some documentation to ensure I get this connected correctly?

I'm using this with an Arduino UNO and https://bitbucket.org/fmalpartida/new-liquidcrystal/downloads/ and SDA -> Pin A4, SCL -> Pin A5, GND -> GND, VCC -> 5V. The following sketch should be enough to get you started: #include #include LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); // Set the LCD I2C address void setup() { // initialize the lcd for 20 chars 4 lines, turn on backlight lcd.begin(20,4); lcd.backlight(); // finish with backlight on //-------- Write characters on the display ------------------ // NOTE: Cursor Position: (CHAR, LINE) start at 0 lcd.setCursor(0,0); lcd.print("Hello World!"); } Once uploaded, adjust contrast using the pot. You won't be able to see anything at either extreme (high or low) of the range. See the examples from the "NewLiquidCrystal_lib" for more. Also, don't forget to remove any other liquid crystal libraries from your libraries directory as there are conflicts.

What library to use with this lcd and i2c interface?

here's the libraries I use #include // Required Library #include // Required Library #include // Required Library LiquidCrystal_I2C lcd(0x27,2,1,0,4,5,6,7,3,POSITIVE); //Address for LCD

20x4 2004 Lcd Display Module With Iic I2c Twi Serial

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Description

🚀 Elevate your DIY projects with vivid clarity and effortless connectivity!

PLUG PLAY I 2 C INTERFACE - Simplify wiring with the included I2C adapter—no extra purchases needed, just code and go.
SEAMLESS ARDUINO COMPATIBILITY - Works flawlessly with popular Arduino libraries, accelerating your prototyping and development.
CUSTOMIZABLE CONTRAST BACKLIGHT - Adjust display contrast with a built-in potentiometer and toggle backlight for perfect visibility.
CRYSTAL CLEAR 80 CHARACTER DISPLAY - Showcase 4 rows of 20 vivid yellow-green characters for ultimate project clarity.
MINIMAL PIN USAGE MAXIMUM FREEDOM - Occupies only 2 I/O pins (SDA & SCL), freeing up your Arduino for more complex tasks.

This 20x4 LCD Display Module features a bright yellow-green backlight and supports 80 characters across 4 lines. Equipped with an integrated I2C serial interface adapter, it drastically reduces wiring complexity by using only two I/O pins (SDA and SCL). Adjustable contrast and backlight controls ensure optimal readability. Perfectly compatible with Arduino and other microcontrollers, it’s a top choice for makers seeking efficient, professional-grade display solutions.

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E£ 1768

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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TrustScore 4.5 | 7,300+ reviews

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20x4 2004 LCD Display Module with IIC/I2C/TWI Serial Interface Adapter (Blue/2004)

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