You want to play a simple melody using TonalBuzzer on GPIO 19. Which code correctly plays notes C4, D4, and E4 each for 0.5 seconds?

hard📝 Application Q8 of 15

Raspberry Pi - gpiozero Library

You want to play a simple melody using TonalBuzzer on GPIO 19. Which code correctly plays notes C4, D4, and E4 each for 0.5 seconds?

Abuzzer.play('C4:0.5 D4:0.5 E4:0.5')

Bbuzzer.play(['C4', 'D4', 'E4'], duration=0.5)

Cbuzzer.play('C4 D4 E4') sleep(1.5)

Dbuzzer.play('C4:1 D4:1 E4:1')

Step-by-Step Solution

Solution:

Step 1: Understand TonalBuzzer play syntax
Notes and durations are specified as strings like 'C4:0.5'.
Step 2: Check options for correct note-duration format
buzzer.play('C4:0.5 D4:0.5 E4:0.5') correctly specifies each note with 0.5 beat duration.
Final Answer:
buzzer.play('C4:0.5 D4:0.5 E4:0.5') -> Option A
Quick Check:
Correct note-duration string format = buzzer.play('C4:0.5 D4:0.5 E4:0.5') [OK]

Quick Trick: Use 'Note:duration' strings for precise note timing [OK]

Common Mistakes:

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