File: compass.py

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firmware-microbit-micropython 1.0.1-4
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"""
    compass.py
    ~~~~~~~~~~

    Creates a compass.

    The user will need to calibrate the compass first. The compass uses the
    built-in clock images to display the position of the needle.

"""
from microbit import *


# Start calibrating
compass.calibrate()

# Try to keep the needle pointed in (roughly) the correct direction
while True:
    sleep(100)
    needle = ((15 - compass.heading()) // 30) % 12
    display.show(Image.ALL_CLOCKS[needle])