3. EXT: First Use V2

3.1. Firmware

Some Microbits can have their firmware updated depending on the microbit version.

See: https://microbit.org/get-started/user-guide/firmware/

See: https://tech.microbit.org/software/daplink-interface/#daplink-software

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3.2. Out of Box hex file v2

The hex file that is on new microbits can be found at: https://microbit.org/get-started/user-guide/out-of-box-experience/

The code below is similar to the out-of-box-experience that occurs when a new microbit is first started.

from microbit import *
import music
import audio

def on_button_pressed_a():
    audio.play(Sound.SPRING, wait=False)
    display.show(Image.HAPPY)

def on_button_pressed_b():
    audio.play(Sound.SAD, wait=False)
    display.show(Image.SAD)

def on_button_pressed_ab():
    if display.read_light_level() > 50:
        music.play(music.POWER_UP, wait=False)
        display.show(Image("90909:09990:99999:09990:90909"))
    else:
        music.play(music.POWER_DOWN, wait=False)
        display.show(Image("00990:00099:00099:00099:00990"))

def on_logo_touched():
    while pin_logo.is_touched():
        display.show(Image("99999:"*int(microphone.sound_level()/51)))
        # Display a bar graph with a height proportional to the sound level; 255 is max level
        sleep(5)
    display.clear()

def on_gesture_screen_down():
    # https://microbit-micropython.readthedocs.io/en/v2-docs/audio.html#built-in-sounds-v2
    display.show(Image.ASLEEP)
    sound_effect = audio.SoundEffect(freq_start=5849, freq_end=1, vol_start=255, vol_end=0, duration=1000,
                waveform=audio.SoundEffect.WAVEFORM_SINE,shape=audio.SoundEffect.SHAPE_LINEAR)
    audio.play(sound_effect, wait=False)

def on_gesture_shake():
    display.show(Image("09090:00000:00000:99999:00000"))
    sound_effect = audio.SoundEffect(freq_start=3041, freq_end=3923, duration=500, vol_start=59, vol_end=255, waveform=audio.SoundEffect.WAVEFORM_SINE, fx=audio.SoundEffect.FX_WARBLE, shape=audio.SoundEffect.SHAPE_LINEAR)
    audio.play(sound_effect, wait=False)
    sleep(1000)  # Delay for 1000 milliseconds (1 second)
    display.show(Image("09090:00000:09990:90009:09990"))
    sleep(1000)  # Delay for 1000 milliseconds (1 second)
    display.show(Image("09090:00000:00000:99999:00000"))

audio.play(Sound.HELLO, wait=False)
display.show(Image.HEART)

while True:
    if accelerometer.was_gesture("face down"):
        on_gesture_screen_down()
    elif accelerometer.is_gesture("shake"):
        on_gesture_shake()
    if pin_logo.is_touched():
        on_logo_touched()
    elif button_a.is_pressed() and button_b.is_pressed():
        on_button_pressed_ab()
    elif button_a.is_pressed():
        on_button_pressed_a()
    elif button_b.is_pressed():
        on_button_pressed_b()
    else:
        display.show("")
    sleep(500)