My stairs use 6 IP Addresses and run JavaScript (hackerhotel2025)

I spent the past 6 years restoring and upgrading the 2 flights of stairs in my almost 100 years old house in my off time, taking into them into the 21st century while I was at it. The result is a standalone extensible system that supports an unlimited number of sensors and can light up to 256 cheap LED strips on a setup that can run completely off of a simple USB power bank for days and costs under about €40 in parts. Come watch this talk if you want to hear me nerd out for an hour and go deep into the challenges and lessons learned, new skills unlocked and how I wrote a ridiculous Timeline based custom Animation Engine in JavaScript that can render it's output as either PWM or CSS animations to run the whole thing and make it do what I envisioned. This talk goes from 3D design and printing to Arduino/Esp32 IOT hardware, software and programming, woodworking and heavy construction to how I finally used Claude to take it to the final iteration and a public release. Licensed to the public under http://creativecommons.org/licenses/by/4.0 about this event: https://pretalx.hackerhotel.nl/2025/talk/YNQQN7/