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Blinking an LED

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Blinking an LED#

TODO

# Imports go at the top
from microbit import *

# Set the LED pin
led_pin = pin1

# Code in a 'while True:' loop repeats forever
while True:
    # Turn the LED on
    led_pin.write_digital(1)
    # Wait for 500ms (0.5 seconds)
    sleep(500)
    # Turn the LED off
    led_pin.write_digital(0)
    # Wait for 500ms (0.5 seconds)
    sleep(500)

Debugging#

The following code is supposed to make an LED on pin1 blink, but it is not working. How can the code be fixed?

quiz-led-01

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Solution: quiz-led-02

The variable pointing to pin1 is led_pin, but the variable used in the while loop is led. This variable has not been declared. Changing led to led_pin will fix the code.

quiz-led-solution

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