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GPIO Digital I/O
GPIO pin numbering digital output LED digital input button pull-up resistor button debounce PWM LED brightness GPIO cleanup edge detection
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Raspberry Pi / GPIO Digital I/O

GPIO pin numbering

Learn GPIO pin numbering in Raspberry Pi with a dedicated explanation, a concept-specific example, practical cautions, and a mastery check.

12 min read • Beginner
raspberry-pi-009.py
python 
from gpiozero import LED
# gpiozero uses BCM GPIO numbering; GPIO17 is physical pin 11
led = LED(17)
print(led.pin)
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