Basics: Reading Documentation - Message structure

[E1cid]

Your message structure looks correct in your example.
the node is 3 years old and last comment in the github issue was december 2019.
there is some talk on this forum here

WS2801 on Raspberry Pi not working

I can't imagine there might be many people using these (string of 50 water proof RGB LEDS that use 2-wire SPI for data/clock) I used to have them working in Node-RED last christmas but they only work this year if I say there is only 1 in the string - I can control that one fine Once I say I have more (say 10) I just get a couple of them lighting up with random colour) To prove they weren't broken, I installed an old Adafruit python lib and they worked fine The only hint I'm getting is this e…