Hands-on home automation and hardware, written up properly. More to come.

Atreus on the LumenCast front with the full Kratos shadow behind him Build story · English

LumenCast: DIY 3D-Printed Shadow Lamp with Paper Art

From an Ellie and Joel idea to printable shadow walls, reusable paper artwork and a modular battery-powered lamp.

 Overview · 4 min read

Make your Busch-Jaeger / ABB-Welcome intercom smart

What's possible: push notifications, blinking lights and a door opener for a wired 2-wire building intercom, with an ESP32 on Mat931's open-source board and Home Assistant.

Build guide · companion how-to · 12 min read

How to make your Busch-Jaeger / ABB-Welcome intercom smart

The step-by-step companion to the overview: ordering Mat931's board, flashing it, ESPHome and reading the bus, the Home Assistant automation and the honest notification trade-offs.