Script and Tests

Script: led_blink_list

This script will blink the LEDs in sequence according to a list named pin_list.

• Set the project name field to led_blink_list.
• Enter script below into the micro:bit Python Editor, and then click Save.
• Click Send to micro:bit.

# led_blink_list

from microbit import *

pin_list = [pin13, pin14, pin15]

while True:
    for pin in pin_list:
        pin.write_digital(1)
        sleep(500)
        pin.write_digital(0)

Tests

• Verify that the lights repeat the same sequence over and over: green for 0.5 s, yellow for 0.5 s, and then red for 0.5 s.
• Try changing sleep(500) to sleep(100) and flash the modified script. Did you anticipate the effect of this change correctly?