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26 lines
560 B
Python
26 lines
560 B
Python
from pybricks.pupdevices import Light
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from pybricks.parameters import Port
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from pybricks.tools import wait, StopWatch
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from umath import pi, cos
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# Initialize the light and a StopWatch.
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light = Light(Port.A)
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watch = StopWatch()
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# Cosine pattern properties.
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PERIOD = 2000
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MAX = 100
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# Make the brightness fade in and out.
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while True:
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# Get phase of the cosine.
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phase = watch.time()/PERIOD*2*pi
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# Evaluate the brightness.
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brightness = (0.5 - 0.5*cos(phase))*MAX
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# Set light brightness and wait a bit.
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light.on(brightness)
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wait(10)
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