You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
31 lines
1.3 KiB
Python
31 lines
1.3 KiB
Python
6 years ago
|
# 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()
|
||
|
|
|
||
|
|
|