Script and Tests

Script: led_blink_list

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

Enter the led_blink_list script (python.microbit.org/v/2 matches the screencaptures).
Set the Script Name field to led_blink_list.
Click Load/Save, and then click Download Project Hex to save your work.
Make sure to close the Load/Save dialog box after downloading.
In the python.microbit.org editor, click Connect, and then click Flash.

# 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?

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