Hi, first of all, as a beginner, I want to thank all members here for all posts and information I needed and used, to make my XXL setup on my TV wall running. Amplifier Onkyo TX-SR393 RPi4 with LibreELEC 9.2.3 Argon One case for RPi4 Arduino UNO Rev.3 about 8m APA102 236 LEDs (30leds/m) MeanWell RSP- 100-5 power supply 100W 20A 4K hdmi splitter with downscaler to 1080p Gana, HDMI to AV converter 1080p LogiLink Audio und Video Grabber USB 2.0 Hyperion NG V2.0.0 alpha.6 As a beginner it was very difficult for me and took 4 days to make my setup running. The led stripes were connected by soldering, the power supply were connected to the beginning, to the middle and to the end of the 4 connected stripes. The arduino adalight sketch is easy to find, but difficult for me to configure to my personal setup. Nothing happened when I tested my setup with hypercon or hypercon.LE. I don’t know why... So I tried Hyperion NG and my setup was running! But the very last LED didn’t work. Then I figured out to change the numbers of LEDs to 237 in the arduino sketch (although I have 236 LEDs). This is the result and I am very happy and proud!