rpi_ws281x/python/examples $ sudo python test.py can work
git clone https://github.com/jgarff/rpi_ws281x cd rpi_ws281x/python
cd mkdir wifi-firmware cd wifi-firmware wget https://github.com/RPi-Distro/firmware-nonfree/raw/master/brcm/brcmfmac43430-sdio.bin wget https://github.com/RPi-Distro/firmware-nonfree/raw/master/brcm/brcmfmac43430-sdio.txt sudo cp sdio /lib/firmware/brcm/ sudo reboot