Hello everyone, i have a problem with my setup and i cannot find the mistake. maybe you guys can help me. first off my setup: 1. rpi 3 b + raspbian stretch 2. ws2812b led (3 pwm) 3. level shifter 4. hdmi -> av -> usb grabber My wiring: https://learn.adafruit.com/neopixels-on-raspberry-pi/wiring#level-converter-chip-wiring Now to my problem: The LEDs wont start. what did i do: 1. blacklisted audio 2. edited config.txt 3. installed rpi_ws281x (git clone https://github.com/jgarff/rpi_ws281x) 4. installed scons 5. tested the leds (sudo PYTHONPATH=".:build/lib.linux-armv7l-2.7" python examples/strandtest.py) 5a. It works fine, the LEDs respond and show the test patterns. I tried this with and without the level shifter. 6. Tested the usb grabber. Shows video on rpi via mplayer. For the first 5 Steps i used this guide (in german): https://tutorials-raspberrypi.de/raspberry-pi-ws2812-ws2811b-rgb-led-streifen-steuern/ Now i installed hyperion: 1. Installed hyperion via hypercon 2. adjusted the json file 3. start the service Well and here comes the problem: The service starts, the grabber starts, but the LEDs wont start. (tested both with level shifter and without). When i stop the service (via hypercon), the LEDs flash white one time. Here is my log: here is my json: EDIT: Here is what the log says when i try to change the LED Color via hypercon: I hope someone can tell why its not working.