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WayinTop 20x4 2004 LCD Display Module with IIC/I2C/TWI Serial Interface Adapter for Arduino for Mega 2560 (Yellow Green/2004)

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

It is a 4 line by 20 character display

Q: 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.

Q: 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.

Q: 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

4.4/5

Product ID: 418412223

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Description

WayinTop 20x4 2004 LCD Display Module with IIC/I2C/TWI Serial Interface Adapter for Arduino for Mega 2560 (Yellow Green/2004)

Have a Question? See What Others Asked

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

Can the I2C address be changed?

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

What library to use with this lcd and i2c interface?

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