Arduino I2C LCD Introdution

Front

Which Arduino pin is used for the SDA line when connecting an I2C LCD to the Arduino Uno?

Back

Pin A4

Front

Which Arduino pin is used for the SCL line when connecting an I2C LCD to the Arduino Uno?  

Back

A5

Front

The I2C LCD requires only two communication pins instead of many. Which two pins are these?  

Back

SDA and SCL

Front

What is typically the correct I2C address for many LCD modules?  

Back

0x27

Front

What Arduino function initializes communication between the I2C LCD and the microcontroller?  

Back

lcd.init()

Front

What does lcd.backlight() do in the code? 

Back

Turns on the LCD’s backlight

Front

What is the purpose of lcd.setCursor(0, 1)?

Back

Sets the cursor to column 0,row 1

Front

What library is required to control an I2C LCD in Arduino?

Back

LiquidCrystal_I2C.h

Front

If nothing appears on the I2C LCD even though the code uploads correctly, which issue is MOST likely?  

Back

Wrong I2C address

Front

Why is Wire.begin() important when using I2C devices like the LCD?  

Back

It initializes I2C communicationon SDA and SCL