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WS2812 데이터시트(PDF) 87 Page - Raspberry Pi Holdings PLC

부품명 WS2812
상세설명  Created by Phillip Burgess
PDF  98 Pages
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제조업체  RASPBERRY-PI [Raspberry Pi Holdings PLC]
홈페이지  https://www.raspberrypi.com/
Logo RASPBERRY-PI - Raspberry Pi Holdings PLC

WS2812 데이터시트(HTML) 87 Page - Raspberry Pi Holdings PLC

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That's all there is to getting started with CircuitPython and NeoPixel LEDs!
Full Example Code
import time
import board
import neopixel
# On CircuitPlayground Express, and boards with built in status NeoPixel -> board.NEOPIXEL
# Otherwise choose an open pin connected to the Data In of the NeoPixel strip, i.e. board.D1
pixel_pin = board.NEOPIXEL
# On a Raspberry pi, use this instead, not all pins are supported
# pixel_pin = board.D18
# The number of NeoPixels
num_pixels = 10
# The order of the pixel colors - RGB or GRB. Some NeoPixels have red and green reversed!
# For RGBW NeoPixels, simply change the ORDER to RGBW or GRBW.
ORDER = neopixel.GRB
pixels = neopixel.NeoPixel(
pixel_pin, num_pixels, brightness=0.2, auto_write=False, pixel_order=ORDER
)
def wheel(pos):
# Input a value 0 to 255 to get a color value.
# The colours are a transition r - g - b - back to r.
if pos < 0 or pos > 255:
r = g = b = 0
elif pos < 85:
r = int(pos * 3)
g = int(255 - pos * 3)
b = 0
elif pos < 170:
pos -= 85
r = int(255 - pos * 3)
g = 0
b = int(pos * 3)
else:
pos -= 170
r = 0
g = int(pos * 3)
b = int(255 - pos * 3)
© Adafruit Industries
https://learn.adafruit.com/adafruit-neopixel-uberguide
Page 90 of 101



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