Neopixel

I wasn’t happy with the original Chapter 7 siren, so I gave it the full treatment: a wailing PWM siren plus rotating NeoPixel police lights — all running cleanly across both cores using the Jorvik profile.

From understanding the WS2812 protocol to writing our own PIO code and creating colourful animations – everything you need to make NeoPixels dance with Ada on the Pico.