Question

You want to blink two LEDs connected to pins 7 and 11 alternately for 5 cycles using Raspberry Pi GPIO. Which code snippet correctly implements this behavior?

Accepted Answer

import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BOARD)
GPIO.setup(7, GPIO.OUT)
GPIO.setup(11, GPIO.OUT)
for _ in range(5):
    GPIO.output(7, GPIO.HIGH)
    GPIO.output(11, GPIO.LOW)
    time.sleep(0.5)
    GPIO.output(7, GPIO.LOW)
    GPIO.output(11, GPIO.HIGH)
    time.sleep(0.5)
GPIO.cleanup()

Answer

import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BOARD)
GPIO.setup(7, GPIO.OUT)
for _ in range(5):
    GPIO.output(7, GPIO.HIGH)
    GPIO.output(11, GPIO.LOW)
    time.sleep(1)
GPIO.cleanup()

Answer

import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BOARD)
GPIO.setup(7, GPIO.OUT)
GPIO.setup(11, GPIO.OUT)
GPIO.output(7, GPIO.HIGH)
GPIO.output(11, GPIO.HIGH)
GPIO.cleanup()

Answer

import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BOARD)
GPIO.setup(7, GPIO.IN)
GPIO.setup(11, GPIO.IN)
for _ in range(5):
    GPIO.output(7, GPIO.HIGH)
    GPIO.output(11, GPIO.LOW)
    time.sleep(0.5)
GPIO.cleanup()

You want to blink two LEDs connected to pins 7 and 11 alternately for 5 cycles using Raspberry Pi GPIO. Which code snippet correctly implements this behavior?

Step 1: Setup pins as output and initialize GPIO

Step 2: Alternate LEDs in a loop with delays

Step 3: Cleanup GPIO pins after use

Final Answer:

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