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- # NeoPixel library strandtest example
- # Author: Tony DiCola (tony@tonydicola.com)
- #
- # Direct port of the Arduino NeoPixel library strandtest example. Showcases
- # various animations on a strip of NeoPixels.
- import time
- from rpi_ws281x import Adafruit_NeoPixel, Color
- # LED strip configuration:
- LED_COUNT = 4 # Number of LED pixels.
- LED_PIN = 18 # GPIO pin connected to the pixels (must support PWM!).
- LED_FREQ_HZ = 800000 # LED signal frequency in hertz (usually 800khz)
- LED_DMA = 5 # DMA channel to use for generating signal (try 5)
- 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 = 0
- LED_STRIP = ws.WS2811_STRIP_GRB
- # Create NeoPixel object with appropriate configuration.
- strip = Adafruit_NeoPixel(LED_COUNT, LED_PIN, LED_FREQ_HZ, LED_DMA, LED_INVERT, LED_BRIGHTNESS,LED_CHANNEL,LED_STRIP)
- # Intialize the library (must be called once before other functions).
- strip.begin()
- strip.setPixelColor(0, Color(255, 0, 0)) #Red
- strip.setPixelColor(1, Color(0, 255, 0)) #Green
- strip.setPixelColor(2, Color(0, 0, 255)) #Blue
- strip.setPixelColor(3, Color(255, 255, 0)) #Yellow
- strip.show()
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