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KNXD

Putting a KNX bus and Home Assistant on speaking terms

The last two forms: a change record, and a card for the day it goes wrong

The last two forms: a change record, and a card for the day it goes wrong

An operations chapter usually opens with a maintenance window and a list of commands. This one opens with a blank form and a rule that every field on it starts marked stopped. Part 9 closes the series with the two documents that decide who is allowed to act and who has to be told: a six-field offline change record that gives maintenance a rhythm which can be halted and handed over, and a five-fiel

Sep 9, 2026

Triage on paper, before anybody reaches for the reset button

Triage on paper, before anybody reaches for the reset button

Something has stopped working, and every instinct you have built on site says to try the next thing — restart the service, swap the driver, unplug the interface and put it back. Chapters 19 and 20 ask you to do none of that. Chapter 19 sorts link symptoms into five evidence layers and writes down, next to each one, exactly what that evidence cannot prove. Chapter 20 does the same job for USB and s

Sep 9, 2026

A backup nobody has restored, and a door nobody remembers opening

A backup nobody has restored, and a door nobody remembers opening

This is where the guide turns to running the thing and recovering it, and the first move is not a backup job. Chapter 17 defines what gets saved, who holds it, who is allowed to decide that it goes back, and exactly which sentence the existence of a copy entitles you to write. Chapter 18 asks the awkward question underneath every commissioning weekend: which doors did not need to be open at all. T

Sep 9, 2026

The entity is not the address, and a classification ticket is not permission

The entity is not the address, and a classification ticket is not permission

This part closes the middle stretch of the guide with the two chapters an experienced installer is most likely to wave through. Chapter 15 separates a Home Assistant entity from a KNX individual address from a KNX group address, and makes you write down which is which without writing down a single value. Chapter 16 takes every action anyone has proposed, breaks it into pieces, and drops each piece

Sep 9, 2026

Nine cards and a worksheet, with not one real value on any of them

Nine cards and a worksheet, with not one real value on any of them

This is the part of the series where nothing gets configured. Three chapters, three sheets of paper: four responsibility cards that separate ETS from KNXnet/IP, from the listener, from the interface; five more that separate the Home Assistant KNX integration from xknx, from a standalone KNXD daemon, from the interface and the bus; and an offline worksheet whose every cell holds a placeholder rathe

Sep 9, 2026

Three sheets of paper before the first value goes in

Three sheets of paper before the first value goes in

Part two of this guide is the configuration half — the INI, the link layer, and the handover into ETS and Home Assistant. It opens with three chapters that put nothing on a wire. Chapter 9 sorts every setting into labeled drawers. Chapter 10 draws a handover checklist so that a startup message never gets promoted into a bus result. Chapter 11 fills in an ETS preflight review sheet whose whole job

Sep 9, 2026

Four fields, four layers, and not one live value

Four fields, four layers, and not one live value

This part closes the first stretch of the guide, and it is the stretch installers are most tempted to skip, because you fill nothing in. Chapter 7 separates a configuration field from a placeholder, a placeholder from a port, and a port from network exposure. Chapter 8 turns that separation into a four-layer evidence map and gives you a test for every sentence you are about to write down. Neither

Sep 9, 2026

Installed, running, stopped — and none of it says the bus is up

Installed, running, stopped — and none of it says the bus is up

The KNXD Add-on has a lifecycle you already recognize from every other Home Assistant add-on: add a repository, install, start, restart, stop, remove. What is different here is that the thing at the other end of the daemon moves lights, blinds and HVAC in a building somebody is standing in. So this part treats each of those states as an evidence layer rather than as progress, walks the gates that

Sep 9, 2026

Sort out who is responsible before KNXD goes anywhere near the bus

Sort out who is responsible before KNXD goes anywhere near the bus

You know the bus and you have used ETS. What this series adds is the piece in between: a daemon that translates between the IP side and the KNX side, run in Home Assistant as an Add-on. This first part installs nothing at all. It separates the four roles, puts the four responsibility stations in order, and then works through the eight-row safety preflight that decides whether an installation may b

Sep 9, 2026