LCD display (16x2) with I2C backpack in Raspberry Pi - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the library needed to control the LCD with I2C.

Raspberry Pi

import [1]

Drag options to blanks, or click blank then click option'

AI2C_LCD_driver

Blcd_driver

Csmbus

Dlcd_i2c

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to import from smbus

Using smbus directly

Using wrong library names like lcd_driver or lcd_i2c

The I2C_LCD_driver library is used to control the LCD with I2C on Raspberry Pi.

2fill in blank

medium

Complete the code to initialize the LCD display object.

Raspberry Pi

lcd = I2C_LCD_driver.[1]()

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ALCD

Blcd

Clcd_init

Attempts:

3 left

💡 Hint

Common Mistakes

Using uppercase 'LCD' instead of 'lcd'

Trying to call a non-existent function like 'lcd_init'

The lcd function initializes the LCD display object for use.

3fill in blank

hard

Fix the error in the code to display the text 'Hello' on the first line of the LCD.

Raspberry Pi

lcd.[1]('Hello', 1)

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Aprint_line

Bdisplay

Clcd_display_string

Dprint

Attempts:

3 left

💡 Hint

Common Mistakes

Using print or print_line which are not valid methods

Using display which is incomplete

The correct method to show text on the LCD is lcd_display_string, where the first argument is the text and the second is the line number.

4fill in blank

hard

Fill both blanks to clear the LCD and then display 'Bye' on the second line.

Raspberry Pi

lcd.[1]()
lcd.[2]('Bye', 2)

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Alcd_clear

Blcd_display_string

Cprint

Dreset

Attempts:

3 left

💡 Hint

Common Mistakes

Using reset instead of lcd_clear

Using print instead of lcd_display_string

First, we clear the LCD with lcd_clear(). Then we use lcd_display_string to show 'Bye' on line 2.

5fill in blank

hard

Fill all three blanks to create a function that writes a message on line 1 and clears the display after 3 seconds.

Raspberry Pi

import time

def show_message(msg):
    lcd.[1]()
    lcd.[2](msg, 1)
    time.[3](3)

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Alcd_clear

Blcd_display_string

Csleep

Dprint

Attempts:

3 left

💡 Hint

Common Mistakes

Using print instead of lcd_display_string

Using time.print instead of time.sleep

The function clears the LCD with lcd_clear(), displays the message on line 1 with lcd_display_string, then waits 3 seconds using time.sleep(3).