Hello, My config RPi B 256MB with Raspian Jessie powered via microUSB port WS2812b - 208 leds powered with 5 V 15 A USB Grabber ID 1b71:3002 Hdmi splitter HDMI2AV My hyperion.config.json tried with and without commented lines in device section. When I use ws2812b driver I get red screen of death and RPi hangs. The same thing is with ws281x. So I can not run it with pin 12 - GPIO18. I can boot with ws2812b or ws281x when I disconnect grabber then hyperion is failed to start I have changed driver to ws2812spi and it partialy works. I tried it with RPi B 256MB, RPi B+ and borrowed RPi3. On RPi3 it works for a while and then it generaly loosing backlight of right side of TV but I got also from time to time gap on the bottom(begin of LED string) side instead of this left side. With RPi B and B+ works without right side (end of LED string) what is more I got LED blinks. Booteffect works at start for all leds and setting color of leds from HyperCon also works for all leds. added to /boot/cmdline.txt line spidev.bufsiz=32768 Finaly I would like to use Hyperion on RPi B. Could you please advise what I do wrong.