This is a private little script for turning on the WS2801 neopixel strips that light my 3d printer. You probably don't want it.
Signals used on the rPi:
pin 23 - SCKL pin 19 - MOSI (SPI 0) 5V gnd
to set leds: octoled red green blue Where arguments are from 0 to 255
Invoke from https://plugins.octoprint.org/plugins/gcodesystemcommands/
author: [email protected]