Raspberry Pi - gpiozero Library
Identify the error in this code snippet:
```python
from gpiozero import TonalBuzzer
buzzer = TonalBuzzer(21)
buzzer.play('D4:2')
buzzer.stop()
```
Identify the error in this code snippet: ```python from gpiozero import TonalBuzzer buzzer = TonalBuzzer(21) buzzer.play('D4:2') buzzer.stop() ```
medium📝 Debug Q6 of 15
Step-by-Step Solution
Solution:
Step 1: Check play method usage
play('D4:2') starts playing note D4 for 2 beats but returns immediately.Step 2: Identify missing delay
Without sleep, stop() is called immediately, cutting sound short.Final Answer:
Missing import of time.sleep to allow note duration. -> Option BQuick Check:
Need sleep to hear note before stop [OK]
Quick Trick: Use sleep to wait while note plays before stopping [OK]
Common Mistakes:
- Calling stop() too soon
- Wrong pin number assumption
- Thinking play() is invalid
Master "gpiozero Library" in Raspberry Pi
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