Digital output (GPIO.output) in Raspberry Pi - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set GPIO pin 18 as output.

Raspberry Pi

import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
GPIO.setup(18, [1])

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AGPIO.PWM

BGPIO.IN

CGPIO.OUT

DGPIO.SPI

Attempts:

3 left

💡 Hint

Common Mistakes

Using GPIO.IN instead of GPIO.OUT

Confusing pin modes with communication protocols

GPIO.OUT sets the pin as an output pin so you can send signals.

2fill in blank

medium

Complete the code to turn GPIO pin 18 ON (set it HIGH).

Raspberry Pi

GPIO.output(18, [1])

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AGPIO.TRUE

BGPIO.LOW

CGPIO.ON

DGPIO.HIGH

Attempts:

3 left

💡 Hint

Common Mistakes

Using GPIO.LOW to turn the pin ON

Using non-existent constants like GPIO.ON

GPIO.HIGH sets the pin voltage to high, turning it ON.

3fill in blank

hard

Fix the error in the code to turn GPIO pin 23 OFF (set it LOW).

Raspberry Pi

GPIO.output(23, [1])

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AGPIO.LOW

BGPIO.HIGH

CGPIO.TRUE

DGPIO.ON

Attempts:

3 left

💡 Hint

Common Mistakes

Using GPIO.HIGH to turn the pin OFF

Using invalid constants like GPIO.ON

GPIO.LOW sets the pin voltage to low, turning it OFF.

4fill in blank

hard

Fill both blanks to create a dictionary of pin states for pins 17 and 27, setting 17 HIGH and 27 LOW.

Raspberry Pi

pin_states = {17: [1], 27: [2]

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AGPIO.HIGH

BGPIO.LOW

CGPIO.OUT

DGPIO.IN

Attempts:

3 left

💡 Hint

Common Mistakes

Using GPIO.OUT or GPIO.IN as pin states

Mixing up HIGH and LOW values

Pin 17 is set HIGH to turn ON, pin 27 is set LOW to turn OFF.

5fill in blank

hard

Fill all three blanks to set up pin 22 as output, turn it ON, and then clean up GPIO.

Raspberry Pi

GPIO.setup(22, [1])
GPIO.output(22, [2])
GPIO.[3]()

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AGPIO.IN

BGPIO.HIGH

Ccleanup

DGPIO.OUT

Attempts:

3 left

💡 Hint

Common Mistakes

Using GPIO.IN instead of GPIO.OUT for setup

Forgetting to call cleanup()

Using wrong constants for output

First, set pin 22 as output with GPIO.OUT, then turn it ON with GPIO.HIGH, and finally clean up with GPIO.cleanup().