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https://github.com/pybricks/pybricks-api.git
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Laurens Valk
b0ffb24a2e
These code samples are rendered in the docs, so we include them here. For the git history of these snippets, see: https://github.com/pybricks/pybricks-projects/commits/f4914069aaacfd9ab1e0dd6f05524f62cfc56b29/snippets
33 lines
1013 B
Python
33 lines
1013 B
Python
from pybricks.pupdevices import UltrasonicSensor
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from pybricks.parameters import Port
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from pybricks.tools import wait, StopWatch
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# The math module is part of standard MicroPython:
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# https://docs.micropython.org/en/latest/library/math.html
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from math import pi, sin
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# Initialize the sensor.
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eyes = UltrasonicSensor(Port.A)
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# Initialize a timer.
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watch = StopWatch()
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# We want one full light cycle to last three seconds.
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PERIOD = 3000
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while True:
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# The phase is where we are in the unit circle now.
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phase = watch.time()/PERIOD*2*pi
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# Each light follows a sine wave with a mean of 50, with an amplitude of 50.
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# We offset this sine wave by 90 degrees for each light, so that all the
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# lights do something different.
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brightness = [sin(phase + offset*pi/2) * 50 + 50 for offset in range(4)]
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# Set the brightness values for all lights. The * symbol unpacks the list
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# of brightness values into separate arguments.
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eyes.lights.on(*brightness)
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# Wait some time.
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wait(50)
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