Python neopixel package bugs All In One

Python 3

Python neopixel library docs

https://docs.circuitpython.org/projects/neopixel/en/latest/index.html

https://github.com/adafruit/Adafruit_CircuitPython_NeoPixel

bugs ❌

https://github.com/adafruit/Adafruit_CircuitPython_NeoPixel/issues/151

https://github.com/adafruit/Adafruit_CircuitPython_NeoPixel/issues/142

demos

$ sudo pip3 install rpi_ws281x

$ sudo pip3 install adafruit-circuitpython-neopixel

$ sudo pip3 install --force-reinstall adafruit-blinka
# equal to
$ sudo python3 -m pip install --force-reinstall adafruit-blinka

Raspberry Pi 3B, BCM GPIO 18 PIN

Python 3.9.2

one WS2812B RGB LED strip of 1M long with 60 LEDs

#!/usr/bin/env python3
# coding: utf8

import board
import neopixel
from time import sleep

# 60 LEDs
pixels = neopixel.NeoPixel(board.D18, 60)
while True:
  for x in range(0, 60):
    pixels[x] = (255, 0, 0)
    sleep(0.1)

"""
$ chmod +x ./led-strip.py
# ❌ Can't open /dev/mem: Permission denied
# $ ./led-strip.py

# ✅
$ sudo ./led-strip.py
"""

(

标签：adafruit,Python,sudo,bugs,neopixel,https,com
From： https://www.cnblogs.com/xgqfrms/p/17380214.html