Class Leds

ev3dev2.led.Leds

Declaration

class Leds(object)

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Methods

▷ def __init__(self)
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▷ def __str__(self)
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▷ def all_off(self)
Turn all LEDs off
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▶ def animate_cycle(self, colors, groups=('LEFT', 'RIGHT'), sleeptime=0.5, duration=5, block=True)
Cycle ``groups`` LEDs through ``colors``. Do this in a loop where we display each color for ``sleeptime`` seconds.
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Animate for duration seconds. If duration is None animate for forever.
Example:
from ev3dev2.led import Leds leds = Leds() leds.animate_cyle(('RED', 'GREEN', 'AMBER'))
▶ def animate_flash(self, color, groups=('LEFT', 'RIGHT'), sleeptime=0.5, duration=5, block=True)
Turn all LEDs in ``groups`` off/on to ``color`` every ``sleeptime`` seconds
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Animate for duration seconds. If duration is None animate for forever.
Example:
from ev3dev2.led import Leds leds = Leds() leds.animate_flash('AMBER', sleeptime=0.75, duration=10)
▶ def animate_police_lights(self, color1, color2, group1='LEFT', group2='RIGHT', sleeptime=0.5, ...)
Cycle the ``group1`` and ``group2`` LEDs between ``color1`` and ``color2`` to give the effect of police lights. Alternate the ``group1`` and ``group2`` LEDs every ``sleeptime`` seconds.
def animate_police_lights(
self,
color1,
color2,
group1='LEFT',
group2='RIGHT',
sleeptime=0.5,
duration=5,
block=True,
)
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Animate for duration seconds. If duration is None animate for forever.
Example:
from ev3dev2.led import Leds leds = Leds() leds.animate_police_lights('RED', 'GREEN', sleeptime=0.75, duration=10)
▶ def animate_rainbow(self, group1='LEFT', group2='RIGHT', increment_by=0.1, sleeptime=0.1, ...)
Gradually fade from one color to the next
def animate_rainbow(
self,
group1='LEFT',
group2='RIGHT',
increment_by=0.1,
sleeptime=0.1,
duration=5,
block=True,
)
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Animate for duration seconds. If duration is None animate for forever.
Example:
from ev3dev2.led import Leds leds = Leds() leds.animate_rainbow()
▷ def animate_stop(self)
Signal the current animation thread to exit and wait for it to exit
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▷ def reset(self)
Put all LEDs back to their default color
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▶ def set(self, group, **kwargs)
Set attributes for each LED in group.
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Example:
my_leds = Leds() my_leds.set_color('LEFT', brightness_pct=0.5, trigger='timer')
▶ def set_color(self, group, color, pct=1)
Sets brightness of LEDs in the given group to the values specified in color tuple. When percentage is specified, brightness of each LED is reduced proportionally.
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Example:
my_leds = Leds() my_leds.set_color('LEFT', 'AMBER')
With a custom color:
my_leds = Leds() my_leds.set_color('LEFT', (0.5, 0.3))