Buzzer and TonalBuzzer in Raspberry Pi - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a Buzzer on GPIO pin 17.

Raspberry Pi

from gpiozero import Buzzer
buzzer = Buzzer([1])

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

A17

B18

C27

D22

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong GPIO pin number.

Passing the pin number as a string instead of an integer.

The Buzzer is connected to GPIO pin 17, so we pass 17 to the Buzzer constructor.

2fill in blank

medium

Complete the code to turn the buzzer on.

Raspberry Pi

from gpiozero import Buzzer
buzzer = Buzzer(17)
buzzer.[1]()

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

Aoff

Bon

Ctoggle

Dstart

Attempts:

3 left

💡 Hint

Common Mistakes

Using off() instead of on().

Using toggle() which switches state but does not guarantee on.

To turn the buzzer on, call the on() method.

3fill in blank

hard

Fix the error in the code to play a tone of 440 Hz for 1 second using TonalBuzzer.

Raspberry Pi

from gpiozero import TonalBuzzer, Tone
import time
buzzer = TonalBuzzer(17)
buzzer.play([1])
time.sleep(1)
buzzer.stop()

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

ATone(frequency=440)

BTone(440)

C440

D440Hz

Attempts:

3 left

💡 Hint

Common Mistakes

Passing an integer directly instead of a Tone object.

Using a string like '440Hz' which is invalid.

The play() method requires a Tone object with frequency=440 to play the tone correctly.

4fill in blank

hard

Fill both blanks to create a TonalBuzzer on pin 18 and play a 523 Hz tone.

Raspberry Pi

from gpiozero import TonalBuzzer, Tone
buzzer = TonalBuzzer([1])
tone = Tone([2])
buzzer.play(tone)

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

A18

B17

C523

D440

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up pin numbers and frequencies.

Passing frequency to TonalBuzzer instead of Tone.

The TonalBuzzer is created on pin 18 and the Tone is set to 523 Hz (C note).

5fill in blank

hard

Fill all three blanks to create a dictionary of tones with their frequencies and play the 659 Hz tone.

Raspberry Pi

from gpiozero import TonalBuzzer, Tone
buzzer = TonalBuzzer([1])
tones = {'E': Tone([2]), 'G': Tone(784)}
buzzer.play(tones[[3]])

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

A17

B659

C'E'

D'G'

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong pin number.

Using the wrong frequency for the 'E' tone.

Not using quotes around the dictionary key.

The buzzer is on pin 17, the 'E' tone frequency is 659 Hz, and we play the tone labeled 'E'.