Thank You @MDAR for the tutorial and howto’s! Did help to kick start my way into svg, ng tags and angular.
My first attempt with the floorplan … was afraid doing it on something real, so started with a doll house :slight_smile;)
Or a interactive on youtube here
svg floorplan and openhab;
then rules doing json api posts to WLED library;
and a WS2812 led strip split in four segments (actually five, as there is a single pixel ‘ambilight’ behind attic, showing CO2 level in room).