import time, math from rpi_ws281x import PixelStrip, Color import argparse # LED strip configuration: LED_COUNT = 70 # Number of LED pixels. LED_PIN = 13 # GPIO pin connected to the pixels (18 uses PWM!). # LED_PIN = 10 # GPIO pin connected to the pixels (10 uses SPI /dev/spidev0.0). LED_FREQ_HZ = 800000 # LED signal frequency in hertz (usually 800khz) LED_DMA = 10 # DMA channel to use for generating signal (try 10) LED_BRIGHTNESS = 255 # Set to 0 for darkest and 255 for brightest LED_INVERT = False # True to invert the signal (when using NPN transistor level shift) LED_CHANNEL = 1 # set to '1' for GPIOs 13, 19, 41, 45 or 53 def wheel(pos): """Generate rainbow colors across 0-255 positions.""" if pos < 85: return Color(pos * 3, 255 - pos * 3, 0) elif pos < 170: pos -= 85 return Color(255 - pos * 3, 0, pos * 3) else: pos -= 170 return Color(0, pos * 3, 255 - pos * 3) def pulsing_light(strip, wait_ms=50, iterations=10): """Helle LIchteffekte in Kette""" position = 0 for i in range(strip.numPixels() * 2): position = position+1 for j in range(strip.numPixels()): strip.setPixelColor(j,Color(round(((math.sin(j+position) * 127 + 128)/255)*255),round(((math.sin(j+position) * 127 + 128) /255)*100), round(((math.sin(j+position) * 127 + 128) /255)*100))) strip.show() time.sleep(wait_ms/1000.0) def strobe(strip, wait_ms=400, strobe_count=7, pulse_count=12): from random import randrange """LED als springender Ball""" for strobe in range(strobe_count): for pulse in range(pulse_count): for i in range(strip.numPixels()): strip.setPixelColorRGB(i, 255,255,255) strip.show() time.sleep(randrange(0,45,1)/1000.0) for i in range(strip.numPixels()): strip.setPixelColorRGB(i, 0,0,0) strip.show() time.sleep(wait_ms/1000.0) def bouncing_balls(strip,ball_count=4, wait_ms=200): start_time = time.time() ClockTimeSinceLastBounce = [0 for i in range(ball_count)] StartHeight=1 for i in range(ball_count): ClockTimeSinceLastBounce[i] = time.time() Height = [0 for i in range(ball_count)] Position = [0 for i in range(ball_count)] ImpactVelocity = [0 for i in range(ball_count)] ImpactVelocityStart= math.sqrt(-2 * -9.81 * 1) Dampening = [0 for i in range(ball_count)] TimeSinceLastBounce = [0 for i in range(ball_count)] for i in range(0,ball_count,1): last_ClockTimeSinceLastBounce = ClockTimeSinceLastBounce[i] ClockTimeSinceLastBounce[i] = time.time() - last_ClockTimeSinceLastBounce Height[i] = StartHeight Position[i] = 0 ImpactVelocity[i] = math.sqrt(-2 * -9.81 * 1) TimeSinceLastBounce[i] = 0 Dampening[i] = 0.90 - (float(i)/(ball_count**2)) while True: for i in range(ball_count): TimeSinceLastBounce[i] = time.time() - ClockTimeSinceLastBounce[i] Height[i] = 0.5 * (-9.81) * (TimeSinceLastBounce[i]**2) + ImpactVelocity[i] * TimeSinceLastBounce[i] if (Height[i] < 0): Height[i] = 0 ImpactVelocity[i] = Dampening[i] * ImpactVelocity[i] ClockTimeSinceLastBounce[i] = time.time() if (ImpactVelocity[i] < 0.01): ImpactVelocity[i] = ImpactVelocityStart Position[i] = round(Height[i] * (strip.numPixels()-1)/StartHeight) #Hier wird die relative Höhe auf die absolute Höhe mit der LED Anzahl umgewandelt. for i in range(ball_count): strip.setPixelColorRGB(Position[i], 0, 0,255) strip.show() for i in range(strip.numPixels()): strip.setPixelColorRGB(i, 0,0,0) def snow_sparkle(strip,sparkle_delay=20): from random import randint pixel= randint(0,strip.numPixels()) speed_delay=randint(100,1000) for i in range(strip.numPixels()): strip.setPixelColor(i, Color(0x10,0x10,0x10)) strip.show() time.sleep(speed_delay/1000.0) strip.setPixelColorRGB(pixel, 255,255,255) strip.show() time.sleep(sparkle_delay/1000.0) def colorWipe(strip, color, wait_ms=50): """Wipe color across display a pixel at a time.""" for i in range(strip.numPixels()): strip.setPixelColor(i, color) #Funktion rpi_ws281x.color wandelt DEC in BIN um strip.show() time.sleep(wait_ms / 1000.0) def rainbow(strip, wait_ms=20, iterations=1): """Draw rainbow that fades across all pixels at once.""" for j in range(256 * iterations): for i in range(strip.numPixels()): strip.setPixelColor(i, wheel((i + j) & 255)) strip.show() time.sleep(wait_ms / 1000.0) def theaterChase(strip, color, wait_ms=50, iterations=10): """Movie theater light style chaser animation.""" for j in range(iterations): for q in range(3): for i in range(0, strip.numPixels(), 3): strip.setPixelColor(i + q, color) strip.show() time.sleep(wait_ms / 1000.0) for i in range(0, strip.numPixels(), 3): strip.setPixelColor(i + q, 0) def theaterChaseRainbow(strip, wait_ms=50): """Rainbow movie theater light style chaser animation.""" for j in range(256): for q in range(3): for i in range(0, strip.numPixels(), 3): strip.setPixelColor(i + q, wheel((i + j) % 255)) strip.show() time.sleep(wait_ms / 1000.0) for i in range(0, strip.numPixels(), 3): strip.setPixelColor(i + q, 0) def rainbowCycle(strip, wait_ms=20, iterations=5): """Draw rainbow that uniformly distributes itself across all pixels.""" for j in range(256 * iterations): for i in range(strip.numPixels()): strip.setPixelColor(i, wheel( (int(i * 256 / strip.numPixels()) + j) & 255)) strip.show() time.sleep(wait_ms / 1000.0) if __name__ == '__main__': parser = argparse.ArgumentParser() parser.add_argument('-c', '--clear', action='store_true', help='clear the display on exit') args = parser.parse_args() strip = PixelStrip(LED_COUNT, LED_PIN, LED_FREQ_HZ, LED_DMA, LED_INVERT, LED_BRIGHTNESS, LED_CHANNEL) strip.begin() print('Press Ctrl-C to quit.') if not args.clear: print('Use "-c" argument to clear LEDs on exit') try: while True: #LED Strip Programme( #colorWipe(strip, color) #theaterChase(strip) theaterChaseRainbow(strip) #pulsing_light(strip) #snow_sparkle(strip) #strobe(strip) #bouncing_balls() except KeyboardInterrupt: if args.clear: colorWipe(strip, Color(0, 0, 0), 10)