2. LED Code Ordering

2.1. Question 1

Put the lines in order to build an ongoing blinker loop that switches an LED on Pin 2 fully ON and OFF every second.

Drag and drop lines into the correct order and click to adjust indentation:

☰

sleep(500)

☰

sleep(500)

☰

pin2.write_digital(1)

☰

while True:

☰

pin2.write_digital(0)

☰

from microbit import *

2.2. Question 2

A student connects a physical indicator light to Pin 1.

Arrange the code lines to create a loop that checks Button B. If Button B is actively down, turn the indicator light fully ON. Otherwise, turn it fully OFF.

Drag and drop lines into the correct order and click to adjust indentation:

☰

pin1.write_digital(1)

☰

from microbit import *

☰

if button_b.is_pressed():

☰

while True:

☰

else:

☰

pin1.write_digital(0)

2.3. Question 3

A student wants to flash a connected digital LED on Pin 0 a specific number of times.

Arrange the lines to run a loop that pulses the LED ON for a duration that is a multiple of 300 milliseconds, based on a sequence of numbers. After each pulse, the LED should be turned OFF for 300 milliseconds.

Drag and drop lines into the correct order and click to adjust indentation:

☰

from microbit import *

☰

pin0.write_digital(1)

☰

sleep(300 * count)

☰

sleep(300)

☰

pin0.write_digital(0)

☰

pulse_sequence = [1, 2, 3]

☰

for count in pulse_sequence:

2.4. Question 4

Put the code snippets in order so that when Button A is actively pressed down, it should write a half-brightness analog signal (512) to an LED on Pin 2. Otherwise, full brightness (1023) should be written to the LED. The loop should run every second.

Drag and drop lines into the correct order and click to adjust indentation:

☰

while True:

☰

sleep(1000)

☰

from microbit import *

☰

else:

☰

pin2.write_analog(1023)

☰

pin2.write_analog(512)

☰

if button_a.is_pressed():

2.5. Question 5

Arrange the lines to loop through a list of brightness values to steadily increase the intensity of an LED on Pin 0.

Drag and drop lines into the correct order and click to adjust indentation:

☰

levels = [0, 256, 512, 768, 1023]

☰

sleep(200)

☰

while True:

☰

pin0.write_analog(value)

☰

from microbit import *

☰

for value in levels: