80 lines
2.1 KiB
Python
80 lines
2.1 KiB
Python
import time
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import random
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from stellar import StellarUnicorn
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from picographics import PicoGraphics, DISPLAY_STELLAR_UNICORN as DISPLAY
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'''
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Random LEDs blink on and off mimicking the look of a movie
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super computer doing its work in the eighties.
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You can adjust the brightness with LUX + and -.
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'''
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su = StellarUnicorn()
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graphics = PicoGraphics(DISPLAY)
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colour = (230, 150, 0)
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@micropython.native # noqa: F821
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def setup():
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global width, height, lifetime, age
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width = StellarUnicorn.WIDTH
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height = StellarUnicorn.HEIGHT
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lifetime = [[0.0 for y in range(height)] for x in range(width)]
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age = [[0.0 for y in range(height)] for x in range(width)]
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for y in range(height):
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for x in range(width):
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lifetime[x][y] = 1.0 + random.uniform(0.0, 0.1)
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age[x][y] = random.uniform(0.0, 1.0) * lifetime[x][y]
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@micropython.native # noqa: F821
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def draw():
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for y in range(height):
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for x in range(width):
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if age[x][y] < lifetime[x][y] * 0.3:
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graphics.set_pen(graphics.create_pen(colour[0], colour[1], colour[2]))
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elif age[x][y] < lifetime[x][y] * 0.5:
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decay = (lifetime[x][y] * 0.5 - age[x][y]) * 5.0
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graphics.set_pen(graphics.create_pen(int(decay * colour[0]), int(decay * colour[1]), int(decay * colour[2])))
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else:
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graphics.set_pen(0)
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graphics.pixel(x, y)
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su.update(graphics)
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@micropython.native # noqa: F821
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def update():
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for y in range(height):
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for x in range(width):
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if age[x][y] >= lifetime[x][y]:
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age[x][y] = 0.0
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lifetime[x][y] = 1.0 + random.uniform(0.0, 0.1)
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age[x][y] += 0.025
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setup()
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su.set_brightness(0.5)
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while True:
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if su.is_pressed(StellarUnicorn.SWITCH_BRIGHTNESS_UP):
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su.adjust_brightness(+0.01)
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if su.is_pressed(StellarUnicorn.SWITCH_BRIGHTNESS_DOWN):
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su.adjust_brightness(-0.01)
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start = time.ticks_ms()
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draw()
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update()
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# pause for a moment (important or the USB serial device will fail)
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time.sleep(0.001)
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print("total took: {} ms".format(time.ticks_ms() - start))
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