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Initial reusable HA kiosk MQTT controls

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.gitignore
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# Per-device credentials and settings
*.env
config
systemd.env
telemetry.env
secrets.yaml
*.key
*.pem
# Generated package and Python cache
home-assistant/kiosk-package.yaml
__pycache__/
*.py[cod]
# Local backups
*.backup-*
CHANGELOG.md
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# Changelog
## Unreleased
- Extracted the kiosk browser and MQTT control into configurable Linux/X11
components.
- Added reusable Home Assistant package rendering, retained-state recovery,
MQTT availability/Last Will, and an optional telemetry publisher.
LICENSE
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might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.
README.md
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# HA Kiosk MQTT Control
Reusable Linux/X11 touchscreen kiosk controls for Home Assistant over MQTT. The
project combines local display and brightness management, a restartable browser,
retained MQTT state and availability, and a Home Assistant package for controls.
The reference installation is a Dell portrait touchscreen kiosk. Device values
are configurable so the same controls can be deployed to other kiosks.
## Features
- Display modes: Screen Lock, Screen Off, Screensaver, and Screen On.
- Touch and optional camera-motion wake, shared presence timer and brightness ramp.
- Current/presence brightness, volume, mute, and physical display state.
- Periodic retained-state publication to recover Home Assistant entities after a
broker retained-store reset.
- MQTT heartbeat watchdog that restarts the screen-control service when its
command subscriber has stopped receiving messages.
- Separate Chrome systemd service with automatic restart.
- Retained availability with Last Will.
- Optional performance telemetry and MQTT Discovery sensors.
## Requirements
- Linux desktop session running X11 (the included touch and DPMS controls use X11).
- Google Chrome/Chromium and a kiosk dashboard URL.
- `mosquitto-clients`, `xinput`, `brightnessctl`, `xset`, `xscreensaver`,
`wpctl`, `stdbuf`, `awk`, `grep`, and Bash.
- A Home Assistant MQTT integration and an MQTT broker reachable from the kiosk.
- Optional camera motion service publishing the configured motion state topic.
- Optional telemetry: Python 3 with `psutil` and `paho-mqtt`.
Wayland support is not currently implemented.
## Configure a kiosk
1. Create the per-user directories, then copy the scripts and units into place:
```sh
install -d -m 700 ~/.config/ha-kiosk
install -d ~/.local/lib/ha-kiosk-mqtt-control ~/.config/systemd/user
cp runtime/*.sh ~/.local/lib/ha-kiosk-mqtt-control/
chmod 755 ~/.local/lib/ha-kiosk-mqtt-control/*.sh
cp runtime/*.service ~/.config/systemd/user/
```
2. If no config exists yet, copy `runtime/config.example` to
`~/.config/ha-kiosk/config`; protect it with `chmod 600`. Edit the kiosk
identifier, MQTT roots, dashboard URL, display/touchscreen values, and optional
motion integration. The `KIOSK_ID` topic segment must match the segment used
in the rendered HA package. `KIOSK_ENTITY_PREFIX` must match the package's
`--entity-prefix` (and is used by optional telemetry). Preserve an existing
config when upgrading rather than replacing it with the example.
3. Configure the system Mosquitto clients so `mosquitto_pub` and
`mosquitto_sub` can reach the same broker as Home Assistant. The control and
availability shell scripts currently call those standard clients without
passing authentication flags; use a broker/network policy that allows the
kiosk's client connection, or integrate a credential-safe client wrapper
appropriate to your broker. Do not put passwords in this repository or in
command-line arguments. The optional Python telemetry publisher accepts
broker credentials from its protected systemd environment file.
4. If no systemd environment file exists yet, copy
`runtime/systemd.env.example` to `~/.config/ha-kiosk/systemd.env` and set
`KIOSK_ID` and `STATUS_ROOT` to match `config`. This environment file is used
by systemd for the availability service's orderly-stop publication.
5. Install `ha-kiosk-browser.service`, `ha-kiosk-screen-control.service`, and
`ha-kiosk-availability.service` from `runtime/` into
`~/.config/systemd/user/`. Before enabling the browser unit, disable any
existing desktop/autostart entry that launches the same browser, so there is
only one browser service owner.
6. Run `systemctl --user daemon-reload`, then enable and start
`ha-kiosk-browser.service`, `ha-kiosk-screen-control.service`, and
`ha-kiosk-availability.service`.
7. Enable lingering for the kiosk user if user services must run before login:
`sudo loginctl enable-linger "$USER"`.
The screen-control script reads `~/.config/ha-kiosk/config`. The browser launcher
reads the same file for `KIOSK_URL`, display and Chrome profile values, and touch
mapping values. Systemd environment files use systemd syntax, not shell sourcing.
## Home Assistant package
Render the MQTT entities from the parameterized package template:
```sh
python3 home-assistant/render-package.py \
--name "My Kiosk" \
--entity-prefix my_kiosk \
--command-root kiosk/commands/my_kiosk \
--status-root kiosk/status/my_kiosk \
--manufacturer Generic \
--model "Linux Touchscreen Kiosk" \
--output /path/to/homeassistant/packages/my_kiosk.yaml
```
The `--command-root` and `--status-root` values are full per-device MQTT topic
roots (including the device segment). They should equal `COMMAND_ROOT/KIOSK_ID`
and `STATUS_ROOT/KIOSK_ID` from the kiosk config. The example uses the neutral
`kiosk/commands` and `kiosk/status` namespaces. The generated package provides the
MQTT controls, availability, and diagnostic entities. Add it to a Home Assistant
package directory and validate the HA configuration before reloading the MQTT
integration or restarting Home Assistant. Existing dashboards and automations may refer to the entity IDs, so
review those references when changing the entity prefix.
The package expects the kiosk to publish the topics rooted at the supplied
command/status roots. It uses MQTT retained availability and has no secrets.
## Optional telemetry
Copy `telemetry/telemetry.env.example` to
`~/.config/ha-kiosk/telemetry.env`, set the broker values, and protect it with
`chmod 600`. Copy `telemetry/kiosk-telemetry.service` into
`~/.config/systemd/user/`, then reload systemd and enable
`kiosk-telemetry.service`. Keep the real environment file out of Git;
`.gitignore` excludes it. Telemetry uses Home Assistant MQTT Discovery.
## Recovery behavior
- All control and diagnostic states are republished retained every 30 seconds.
- A non-retained control heartbeat is sent on the same cadence. If the command
subscriber does not return the heartbeat within 90 seconds, systemd restarts
screen control.
- Chrome runs in a separate `Restart=always` service, so restarting screen
control does not take down the browser.
- The availability watcher publishes retained `ON`, while Mosquitto's Last Will
publishes retained `OFF` when the connection is lost.
## Updating
Back up the per-device configuration and current scripts, install the new
version, run `bash -n` on shell scripts, reload user systemd, and restart the
services individually. Check `systemctl --user status` and the retained MQTT
state topics after the update.
## License
This project is licensed under the GNU General Public License, version 3 or any
later version. See `LICENSE`.
## Credentials and repository
Never commit MQTT credentials, SSH private keys, Home Assistant tokens, or a
real per-kiosk config. The Gitea repository is public, so keep secrets and actual
per-kiosk settings out of commits.
home-assistant/kiosk-package.yaml.in
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# SPDX-License-Identifier: GPL-3.0-or-later
#:########################################################################################:#
# __KIOSK_NAME__ Package #
#:########################################################################################:#
#
# TITLE:
# __KIOSK_NAME__
#
# FILE:
# __KIOSK_ENTITY_PREFIX__.yaml
#
# VERSION:
# V3.0 - 2026-09-26
#
# PURPOSE:
# Provides Home Assistant controls and status entities for the Kiosk portrait
# touchscreen kiosk.
#
# DISPLAY CONTROL MODEL:
# A single MQTT select sets one persistent display mode:
# - Screen Lock
# - Screen Off
# - Screensaver
# - Screen On
#
# The selected display mode is separate from the actual physical screen and
# screensaver states. For example, Screen Off remains selected while a touch
# temporarily wakes the physical display.
#
# MQTT DEVICE:
# Name: __KIOSK_NAME__
# Identifier: __KIOSK_ENTITY_PREFIX__
# Manufacturer: Dell
# Model: Portrait Touchscreen Kiosk
# Suggested Area: Lounge
#
# ENTITIES:
# select.__KIOSK_ENTITY_PREFIX___display_mode
# number.__KIOSK_ENTITY_PREFIX___brightness
# number.__KIOSK_ENTITY_PREFIX___presence_brightness
# sensor.__KIOSK_ENTITY_PREFIX___actual_brightness
# number.__KIOSK_ENTITY_PREFIX___presence_timeout
# binary_sensor.__KIOSK_ENTITY_PREFIX___presence_active
# switch.__KIOSK_ENTITY_PREFIX___motion_wake
# number.__KIOSK_ENTITY_PREFIX___volume
# switch.__KIOSK_ENTITY_PREFIX___mute
# binary_sensor.__KIOSK_ENTITY_PREFIX___screen_on
# binary_sensor.__KIOSK_ENTITY_PREFIX___screensaver_active
# binary_sensor.__KIOSK_ENTITY_PREFIX___motion
#
# REPLACED ENTITIES:
# The following writable entities from V1.7 are removed:
# - switch.__KIOSK_ENTITY_PREFIX___screen
# - switch.__KIOSK_ENTITY_PREFIX___screensaver
#
# They are replaced by:
# - select.__KIOSK_ENTITY_PREFIX___display_mode
# - binary_sensor.__KIOSK_ENTITY_PREFIX___screen_on
# - binary_sensor.__KIOSK_ENTITY_PREFIX___screensaver_active
#
# MQTT COMMAND TOPICS:
# __COMMAND_TOPIC_ROOT__/display_mode/set
# __COMMAND_TOPIC_ROOT__/brightness/set
# __COMMAND_TOPIC_ROOT__/brightness/presence/set
# __COMMAND_TOPIC_ROOT__/presence/timeout/set
# __COMMAND_TOPIC_ROOT__/motion_wake/set
# __COMMAND_TOPIC_ROOT__/audio/volume/set
# __COMMAND_TOPIC_ROOT__/audio/mute/set
#
# MQTT STATE TOPICS:
# __STATUS_TOPIC_ROOT__/display_mode/state
# __STATUS_TOPIC_ROOT__/screen/state
# __STATUS_TOPIC_ROOT__/screensaver/state
# __STATUS_TOPIC_ROOT__/brightness/state
# __STATUS_TOPIC_ROOT__/brightness/actual/state
# __STATUS_TOPIC_ROOT__/brightness/presence/state
# __STATUS_TOPIC_ROOT__/presence/state
# __STATUS_TOPIC_ROOT__/presence/timeout/state
# __STATUS_TOPIC_ROOT__/motion_wake/state
# __STATUS_TOPIC_ROOT__/audio/volume/state
# __STATUS_TOPIC_ROOT__/audio/mute/state
# __STATUS_TOPIC_ROOT__/motion/state
#
# MQTT AVAILABILITY TOPIC:
# __STATUS_TOPIC_ROOT__/availability
#
# DISPLAY MODES:
# Screen Lock:
# - Stops XScreenSaver.
# - Disables touchscreen input.
# - Keeps the physical panel off.
# - Ignores camera motion even when Motion Wake is enabled.
# - Camera motion detection and reporting continue in the background.
#
# Screen Off:
# - Keeps the physical panel off while activity is inactive.
# - Keeps the touchscreen enabled.
# - Touch always wakes the panel temporarily.
# - Camera motion wakes it when Motion Wake is enabled.
# - Activity applies Presence Brightness.
# - The panel returns to Screen Off after the shared Presence Timeout.
#
# Screensaver:
# - Turns the panel on at Current Brightness.
# - Starts XScreenSaver immediately.
# - Touch stops XScreenSaver and applies Presence Brightness.
# - Camera motion does the same when Motion Wake is enabled.
# - XScreenSaver restarts after the shared Presence Timeout.
#
# Screen On:
# - Keeps the panel on at Current Brightness while activity is inactive.
# - Touch applies Presence Brightness.
# - Camera motion does the same when Motion Wake is enabled.
# - The panel returns to Current Brightness after the Presence Timeout.
#
# PRESENCE AND TOUCH OPERATION:
# - Touch and camera motion use the same Presence Timeout.
# - Touch is active in every mode except Screen Lock.
# - Motion Wake controls camera motion only and does not disable touch wake.
# - Qualifying activity immediately applies Presence Brightness.
# - Camera motion holds presence active until the Motion entity returns to OFF.
# - A touch starts or restarts the ten-step brightness ramp immediately unless
# qualifying camera motion is currently holding presence active.
# - Presence Timeout is the total duration of the ten-step brightness ramp.
# - The final ramp step applies the latest Current Brightness.
# - The selected display mode is then restored automatically.
#
# DIAGNOSTIC STATE MEANING:
# - Screen On reports the real Linux DPMS panel state.
# - Screensaver Active reports whether XScreenSaver is running.
# - Presence Active reports whether temporary activity behaviour is active.
# - Actual Brightness reports the physical backlight percentage.
#
# VERSION HISTORY:
# V2.3 - 2026-08-02
# - Removed the Home Assistant Display Mode Restoration automation.
# - Prevented startup and availability timing races from republishing an
# incorrect display mode, including unexpected Screen On commands.
# - Display-mode persistence and enforcement remain handled locally by the
# Kiosk screen-control service.
#
# V2.2 - 2026-07-30
# - Enforce Screen Lock every ten minutes because the kiosk can incorrectly report
# DPMS off after a restart while the physical panel remains dimly visible.
#
# V2.1 - 2026-07-30
# - Reapply the selected display mode when the kiosk or Home Assistant restarts,
# ensuring its physical panel, touchscreen and screensaver state are restored.
#
# V2.0 - 2026-07-28
# - Replaced the separate Screen and Screensaver switches with one persistent
# four-option Display Mode select.
# - Added Screen Lock, Screen Off, Screensaver, and Screen On modes.
# - Added shared touchscreen and camera-presence behaviour.
# - Added automatic return to the selected mode after the presence ramp.
# - Replaced writable Screen and Screensaver entities with diagnostics.
#
# V1.7 - 2026-07-27
# - Re-enabled DPMS after XScreenSaver activation.
# - Corrected Screen state reporting while XScreenSaver was running.
#
# V1.6 - 2026-07-27
# - Grouped all MQTT entities under one __KIOSK_NAME__ device.
#
# V1.5 - 2026-07-27
# - Added Motion Wake control.
#
# V1.4 - 2026-07-27
# - Added the ten-step presence-brightness fade.
#
# V1.3 - 2026-07-27
# - Added presence brightness, timeout, and diagnostic entities.
#
# V1.2 - 2026-07-27
# - Added XScreenSaver control.
#
# V1.1 - 2026-07-27
# - Added MQTT availability monitoring.
#
# V1.0 - 2026-07-26
# - Initial package.
#
#:########################################################################################:#
# MQTT Entities #
#:########################################################################################:#
mqtt:
- button:
name: "Kiosk Restart Chrome"
unique_id: __KIOSK_ENTITY_PREFIX___restart_chrome
icon: mdi:google-chrome
device:
identifiers:
- __KIOSK_ENTITY_PREFIX__
name: "__KIOSK_NAME__"
manufacturer: "Dell"
model: "Portrait Touchscreen Kiosk"
suggested_area: "Lounge"
command_topic: "__COMMAND_TOPIC_ROOT__/chrome/restart"
payload_press: "PRESS"
#:########################################################################################:#
# __KIOSK_NAME__ Display Mode #
#:########################################################################################:#
#
# Selects the persistent display operating mode.
#
# The selected mode remains unchanged while touch or camera activity temporarily
# changes the real panel or screensaver state.
#
- select:
name: "Display Mode"
unique_id: __KIOSK_ENTITY_PREFIX___display_mode
default_entity_id: select.__KIOSK_ENTITY_PREFIX___display_mode
device:
identifiers:
- __KIOSK_ENTITY_PREFIX__
name: "__KIOSK_NAME__"
manufacturer: "Dell"
model: "Portrait Touchscreen Kiosk"
suggested_area: "Lounge"
command_topic: "__COMMAND_TOPIC_ROOT__/display_mode/set"
state_topic: "__STATUS_TOPIC_ROOT__/display_mode/state"
availability_topic: "__STATUS_TOPIC_ROOT__/availability"
payload_available: "ON"
payload_not_available: "OFF"
options:
- "Screen Lock"
- "Screen Off"
- "Screensaver"
- "Screen On"
optimistic: false
retain: false
icon: mdi:monitor-dashboard
#:########################################################################################:#
# __KIOSK_NAME__ Current Brightness #
#:########################################################################################:#
#
# Stores the normal inactive brightness from 1 to 100 percent.
#
# In Screensaver and Screen On modes it is the normal visible brightness.
# In Screen Off mode it is the final ramp target before the panel powers off.
# In Screen Lock mode it is stored for the next unlocked mode.
#
- number:
name: "Brightness"
unique_id: __KIOSK_ENTITY_PREFIX___brightness
default_entity_id: number.__KIOSK_ENTITY_PREFIX___brightness
device:
identifiers:
- __KIOSK_ENTITY_PREFIX__
name: "__KIOSK_NAME__"
manufacturer: "Dell"
model: "Portrait Touchscreen Kiosk"
suggested_area: "Lounge"
command_topic: "__COMMAND_TOPIC_ROOT__/brightness/set"
state_topic: "__STATUS_TOPIC_ROOT__/brightness/state"
availability_topic: "__STATUS_TOPIC_ROOT__/availability"
payload_available: "ON"
payload_not_available: "OFF"
min: 1
max: 100
step: 1
mode: slider
unit_of_measurement: "%"
optimistic: false
retain: false
icon: mdi:brightness-6
#:########################################################################################:#
# __KIOSK_NAME__ Presence Brightness #
#:########################################################################################:#
#
# Sets the temporary brightness used after touch or qualifying camera motion.
#
# Changing it while Presence Active is ON immediately updates the physical
# backlight.
#
- number:
name: "Presence Brightness"
unique_id: __KIOSK_ENTITY_PREFIX___presence_brightness
default_entity_id: number.__KIOSK_ENTITY_PREFIX___presence_brightness
device:
identifiers:
- __KIOSK_ENTITY_PREFIX__
name: "__KIOSK_NAME__"
manufacturer: "Dell"
model: "Portrait Touchscreen Kiosk"
suggested_area: "Lounge"
entity_category: config
command_topic: "__COMMAND_TOPIC_ROOT__/brightness/presence/set"
state_topic: "__STATUS_TOPIC_ROOT__/brightness/presence/state"
availability_topic: "__STATUS_TOPIC_ROOT__/availability"
payload_available: "ON"
payload_not_available: "OFF"
min: 1
max: 100
step: 1
mode: slider
unit_of_measurement: "%"
optimistic: false
retain: false
icon: mdi:brightness-7
#:########################################################################################:#
# __KIOSK_NAME__ Actual Brightness #
#:########################################################################################:#
#
# Reports the physical display backlight percentage.
#
# This may differ from Current Brightness while temporary activity is active or
# while the ten-step brightness ramp is running.
#
- sensor:
name: "Actual Brightness"
unique_id: __KIOSK_ENTITY_PREFIX___actual_brightness
default_entity_id: sensor.__KIOSK_ENTITY_PREFIX___actual_brightness
device:
identifiers:
- __KIOSK_ENTITY_PREFIX__
name: "__KIOSK_NAME__"
manufacturer: "Dell"
model: "Portrait Touchscreen Kiosk"
suggested_area: "Lounge"
entity_category: diagnostic
state_topic: "__STATUS_TOPIC_ROOT__/brightness/actual/state"
availability_topic: "__STATUS_TOPIC_ROOT__/availability"
payload_available: "ON"
payload_not_available: "OFF"
unit_of_measurement: "%"
state_class: measurement
icon: mdi:brightness-percent
#:########################################################################################:#
# __KIOSK_NAME__ Presence Timeout #
#:########################################################################################:#
#
# Sets the shared touch and camera-presence timeout.
#
# The value is the total duration of the ten-step brightness ramp. Home Assistant
# displays whole minutes while MQTT stores and transfers seconds.
#
- number:
name: "Presence Timeout"
unique_id: __KIOSK_ENTITY_PREFIX___presence_timeout
default_entity_id: number.__KIOSK_ENTITY_PREFIX___presence_timeout
device:
identifiers:
- __KIOSK_ENTITY_PREFIX__
name: "__KIOSK_NAME__"
manufacturer: "Dell"
model: "Portrait Touchscreen Kiosk"
suggested_area: "Lounge"
entity_category: config
command_topic: "__COMMAND_TOPIC_ROOT__/presence/timeout/set"
state_topic: "__STATUS_TOPIC_ROOT__/presence/timeout/state"
availability_topic: "__STATUS_TOPIC_ROOT__/availability"
payload_available: "ON"
payload_not_available: "OFF"
command_template: >-
{{ (value | float(1) * 60) | round(0) | int }}
value_template: >-
{{ (value | float(60) / 60) | round(0) | int }}
min: 1
max: 1440
step: 1
mode: box
unit_of_measurement: "min"
optimistic: false
retain: false
icon: mdi:timer-outline
#:########################################################################################:#
# __KIOSK_NAME__ Presence Active #
#:########################################################################################:#
#
# Reports whether temporary touch or camera-presence behaviour is active.
#
# It remains ON through the brightness ramp and returns to OFF when the selected
# display mode has been restored.
#
- binary_sensor:
name: "Presence Active"
unique_id: __KIOSK_ENTITY_PREFIX___presence_active
default_entity_id: binary_sensor.__KIOSK_ENTITY_PREFIX___presence_active
device:
identifiers:
- __KIOSK_ENTITY_PREFIX__
name: "__KIOSK_NAME__"
manufacturer: "Dell"
model: "Portrait Touchscreen Kiosk"
suggested_area: "Lounge"
entity_category: diagnostic
state_topic: "__STATUS_TOPIC_ROOT__/presence/state"
availability_topic: "__STATUS_TOPIC_ROOT__/availability"
payload_available: "ON"
payload_not_available: "OFF"
payload_on: "ON"
payload_off: "OFF"
icon: mdi:account-eye
#:########################################################################################:#
# __KIOSK_NAME__ Motion Wake #
#:########################################################################################:#
#
# Controls whether camera motion counts as display activity.
#
# Motion Wake does not affect touchscreen activity. Screen Lock ignores camera
# motion regardless of this switch while motion detection continues reporting.
#
- switch:
name: "Motion Wake"
unique_id: __KIOSK_ENTITY_PREFIX___motion_wake
default_entity_id: switch.__KIOSK_ENTITY_PREFIX___motion_wake
device:
identifiers:
- __KIOSK_ENTITY_PREFIX__
name: "__KIOSK_NAME__"
manufacturer: "Dell"
model: "Portrait Touchscreen Kiosk"
suggested_area: "Lounge"
entity_category: config
command_topic: "__COMMAND_TOPIC_ROOT__/motion_wake/set"
state_topic: "__STATUS_TOPIC_ROOT__/motion_wake/state"
availability_topic: "__STATUS_TOPIC_ROOT__/availability"
payload_available: "ON"
payload_not_available: "OFF"
payload_on: "ON"
payload_off: "OFF"
optimistic: false
retain: false
icon: mdi:motion-sensor
#:########################################################################################:#
# __KIOSK_NAME__ Volume #
#:########################################################################################:#
#
# Controls the active PipeWire audio-sink volume from 0 to 100 percent.
#
- number:
name: "Volume"
unique_id: __KIOSK_ENTITY_PREFIX___volume
default_entity_id: number.__KIOSK_ENTITY_PREFIX___volume
device:
identifiers:
- __KIOSK_ENTITY_PREFIX__
name: "__KIOSK_NAME__"
manufacturer: "Dell"
model: "Portrait Touchscreen Kiosk"
suggested_area: "Lounge"
command_topic: "__COMMAND_TOPIC_ROOT__/audio/volume/set"
state_topic: "__STATUS_TOPIC_ROOT__/audio/volume/state"
availability_topic: "__STATUS_TOPIC_ROOT__/availability"
payload_available: "ON"
payload_not_available: "OFF"
min: 0
max: 100
step: 1
mode: slider
unit_of_measurement: "%"
optimistic: false
retain: false
icon: mdi:volume-high
#:########################################################################################:#
# __KIOSK_NAME__ Mute #
#:########################################################################################:#
#
# Controls the mute state of the active PipeWire audio sink.
#
- switch:
name: "Mute"
unique_id: __KIOSK_ENTITY_PREFIX___mute
default_entity_id: switch.__KIOSK_ENTITY_PREFIX___mute
device:
identifiers:
- __KIOSK_ENTITY_PREFIX__
name: "__KIOSK_NAME__"
manufacturer: "Dell"
model: "Portrait Touchscreen Kiosk"
suggested_area: "Lounge"
command_topic: "__COMMAND_TOPIC_ROOT__/audio/mute/set"
state_topic: "__STATUS_TOPIC_ROOT__/audio/mute/state"
availability_topic: "__STATUS_TOPIC_ROOT__/availability"
payload_available: "ON"
payload_not_available: "OFF"
payload_on: "ON"
payload_off: "OFF"
optimistic: false
retain: false
icon: mdi:volume-mute
#:########################################################################################:#
# __KIOSK_NAME__ Screen On #
#:########################################################################################:#
#
# Reports the real physical panel state from Linux DPMS.
#
# This can report ON while Display Mode remains Screen Off because touch or
# qualifying camera motion has temporarily woken the panel.
#
- binary_sensor:
name: "Screen On"
unique_id: __KIOSK_ENTITY_PREFIX___screen_on
default_entity_id: binary_sensor.__KIOSK_ENTITY_PREFIX___screen_on
device:
identifiers:
- __KIOSK_ENTITY_PREFIX__
name: "__KIOSK_NAME__"
manufacturer: "Dell"
model: "Portrait Touchscreen Kiosk"
suggested_area: "Lounge"
entity_category: diagnostic
state_topic: "__STATUS_TOPIC_ROOT__/screen/state"
availability_topic: "__STATUS_TOPIC_ROOT__/availability"
payload_available: "ON"
payload_not_available: "OFF"
payload_on: "ON"
payload_off: "OFF"
device_class: power
icon: mdi:monitor
#:########################################################################################:#
# __KIOSK_NAME__ Screensaver Active #
#:########################################################################################:#
#
# Reports whether XScreenSaver is currently running.
#
# In Screensaver mode it normally reports ON, but temporarily reports OFF while
# touch or qualifying camera motion displays the Home Assistant kiosk.
#
- binary_sensor:
name: "Screensaver Active"
unique_id: __KIOSK_ENTITY_PREFIX___screensaver_active
default_entity_id: binary_sensor.__KIOSK_ENTITY_PREFIX___screensaver_active
device:
identifiers:
- __KIOSK_ENTITY_PREFIX__
name: "__KIOSK_NAME__"
manufacturer: "Dell"
model: "Portrait Touchscreen Kiosk"
suggested_area: "Lounge"
entity_category: diagnostic
state_topic: "__STATUS_TOPIC_ROOT__/screensaver/state"
availability_topic: "__STATUS_TOPIC_ROOT__/availability"
payload_available: "ON"
payload_not_available: "OFF"
payload_on: "ON"
payload_off: "OFF"
icon: mdi:monitor-shimmer
#:########################################################################################:#
# __KIOSK_NAME__ Motion #
#:########################################################################################:#
#
# Reports raw movement detected by the local Motion camera service.
#
# Motion continues reporting in Screen Lock and while Motion Wake is OFF. It only
# affects display activity when Motion Wake is ON and Display Mode is not
# Screen Lock.
#
- binary_sensor:
name: "Motion"
unique_id: __KIOSK_ENTITY_PREFIX___motion
default_entity_id: binary_sensor.__KIOSK_ENTITY_PREFIX___motion
device:
identifiers:
- __KIOSK_ENTITY_PREFIX__
name: "__KIOSK_NAME__"
manufacturer: "Dell"
model: "Portrait Touchscreen Kiosk"
suggested_area: "Lounge"
state_topic: "__STATUS_TOPIC_ROOT__/motion/state"
availability_topic: "__STATUS_TOPIC_ROOT__/availability"
payload_available: "ON"
payload_not_available: "OFF"
payload_on: "ON"
payload_off: "OFF"
device_class: motion
home-assistant/render-package.py
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#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-3.0-or-later
"""Render the MQTT kiosk Home Assistant package from its parameterized template."""
import argparse
import json
import re
from pathlib import Path
parser = argparse.ArgumentParser()
parser.add_argument("--name", required=True)
parser.add_argument("--entity-prefix", required=True, help="HA device/entity slug, e.g. lounge_kiosk")
parser.add_argument("--command-root", required=True, help="MQTT command topic root, e.g. kiosk/commands/lounge")
parser.add_argument("--status-root", required=True, help="MQTT status topic root, e.g. kiosk/status/lounge")
parser.add_argument("--manufacturer", default="Generic")
parser.add_argument("--model", default="Linux Touchscreen Kiosk")
parser.add_argument("--area", default="")
parser.add_argument("--output", required=True, type=Path)
args = parser.parse_args()
if not re.fullmatch(r"[a-z][a-z0-9_]*", args.entity_prefix):
parser.error("--entity-prefix must contain lowercase letters, digits, and underscores")
topic_pattern = r"[A-Za-z0-9_.-]+(?:/[A-Za-z0-9_.-]+)*"
if not re.fullmatch(topic_pattern, args.command_root):
parser.error("--command-root must be a non-empty MQTT topic path without wildcards")
if not re.fullmatch(topic_pattern, args.status_root):
parser.error("--status-root must be a non-empty MQTT topic path without wildcards")
text = Path(__file__).with_name("kiosk-package.yaml.in").read_text()
quoted_values = {
"__KIOSK_NAME__": args.name,
"__MANUFACTURER__": args.manufacturer,
"__MODEL__": args.model,
"__AREA__": args.area,
}
for marker, value in quoted_values.items():
text = text.replace(f'"{marker}"', json.dumps(value, ensure_ascii=False))
text = text.replace(marker, value)
for marker, value in {
"__KIOSK_ENTITY_PREFIX__": args.entity_prefix,
"__COMMAND_TOPIC_ROOT__": args.command_root,
"__STATUS_TOPIC_ROOT__": args.status_root,
}.items():
text = text.replace(marker, value)
if re.search(r"__[A-Z_]+__", text):
raise SystemExit("Unresolved template marker remains")
if not args.area:
text = text.replace(' suggested_area: ""\n', "")
args.output.parent.mkdir(parents=True, exist_ok=True)
args.output.write_text(text)
runtime/availability-watch.sh
Executable
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#!/usr/bin/env bash
# SPDX-License-Identifier: GPL-3.0-or-later
set -u
KIOSK_CONFIG_FILE="${KIOSK_CONFIG_FILE:-$HOME/.config/ha-kiosk/config}"
if [[ -r "$KIOSK_CONFIG_FILE" ]]; then
# shellcheck source=/dev/null
source "$KIOSK_CONFIG_FILE"
fi
: "${KIOSK_ID:=kiosk}"
: "${COMMAND_ROOT:=kiosk/commands}"
: "${STATUS_ROOT:=kiosk/status}"
AVAILABILITY_TOPIC="${STATUS_ROOT}/${KIOSK_ID}/availability"
PING_TOPIC="${COMMAND_ROOT}/${KIOSK_ID}/availability/ping"
PUBLISH_INTERVAL_SECONDS="${AVAILABILITY_INTERVAL_SECONDS:-30}"
publish_available() {
/usr/bin/mosquitto_pub -r -t "$AVAILABILITY_TOPIC" -m "ON"
}
# Keep the MQTT connection that owns the Last Will open in the background.
/usr/bin/mosquitto_sub \
-t "$PING_TOPIC" \
--will-topic "$AVAILABILITY_TOPIC" \
--will-payload "OFF" \
--will-retain &
subscriber_pid=$!
cleanup() {
kill "$subscriber_pid" 2>/dev/null || true
wait "$subscriber_pid" 2>/dev/null || true
}
trap cleanup EXIT INT TERM
# Reassert retained availability after Mosquitto reconnects internally. The
# Last Will has already published OFF when a broker connection was lost.
while kill -0 "$subscriber_pid" 2>/dev/null; do
publish_available || true
sleep "$PUBLISH_INTERVAL_SECONDS"
done
wait "$subscriber_pid"
runtime/config.example
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# SPDX-License-Identifier: GPL-3.0-or-later
# Per-kiosk settings. Copy to ~/.config/ha-kiosk/config.
# This file is sourced by Bash; quote values containing spaces.
KIOSK_ID=my_kiosk
KIOSK_ENTITY_PREFIX=my_kiosk
KIOSK_NAME="My Kiosk"
KIOSK_MANUFACTURER=Generic
KIOSK_MODEL="Linux Touchscreen Kiosk"
KIOSK_AREA=""
COMMAND_ROOT=kiosk/commands
STATUS_ROOT=kiosk/status
KIOSK_URL="http://homeassistant.local:8123/"
KIOSK_DISPLAY=:0
KIOSK_XAUTHORITY="$HOME/.Xauthority"
CHROME_BIN=/usr/bin/google-chrome-stable
CHROME_USER_DATA_DIR="$HOME/.config/ha-kiosk/chrome-profile"
TOUCH_DEVICE_NAME="Touchscreen Device Name"
TOUCH_DISPLAY_OUTPUT=eDP-1
SCREEN_LOCK_BRIGHTNESS=0
BROWSER_SERVICE=ha-kiosk-browser.service
MOTION_SERVICE=my_kiosk-motion.service
MOTION_EVENT_SCRIPT="$HOME/my_kiosk-motion-event.sh"
MQTT_REPUBLISH_INTERVAL_SECONDS=30
MQTT_HEARTBEAT_TIMEOUT_SECONDS=90
AVAILABILITY_INTERVAL_SECONDS=30
runtime/ha-kiosk-availability.service
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# SPDX-License-Identifier: GPL-3.0-or-later
[Unit]
Description=Home Assistant Kiosk MQTT availability
After=network-online.target
Wants=network-online.target
StartLimitIntervalSec=0
[Service]
Type=simple
EnvironmentFile=%h/.config/ha-kiosk/systemd.env
ExecStart=%h/.local/lib/ha-kiosk-mqtt-control/availability-watch.sh
ExecStopPost=/usr/bin/mosquitto_pub -r -t ${STATUS_ROOT}/${KIOSK_ID}/availability -m OFF
Restart=always
RestartSec=10
[Install]
WantedBy=default.target
runtime/ha-kiosk-browser.service
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# SPDX-License-Identifier: GPL-3.0-or-later
[Unit]
Description=Home Assistant touchscreen kiosk browser
After=graphical-session.target network-online.target
Wants=network-online.target
[Service]
Type=simple
EnvironmentFile=-%h/.config/ha-kiosk/systemd.env
ExecStart=%h/.local/lib/ha-kiosk-mqtt-control/ha-kiosk-launcher.sh
Restart=always
RestartSec=5
[Install]
WantedBy=default.target
runtime/ha-kiosk-launcher.sh
Executable
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#!/usr/bin/env bash
# SPDX-License-Identifier: GPL-3.0-or-later
set -euo pipefail
KIOSK_CONFIG_FILE="${KIOSK_CONFIG_FILE:-$HOME/.config/ha-kiosk/config}"
if [[ -r "$KIOSK_CONFIG_FILE" ]]; then
# shellcheck source=/dev/null
source "$KIOSK_CONFIG_FILE"
fi
: "${KIOSK_URL:?Set KIOSK_URL in ~/.config/ha-kiosk/config}"
: "${TOUCH_DEVICE_NAME:=Touchscreen Device Name}"
: "${TOUCH_DISPLAY_OUTPUT:=eDP-1}"
: "${KIOSK_DISPLAY:=:0}"
: "${KIOSK_XAUTHORITY:=$HOME/.Xauthority}"
: "${CHROME_BIN:=/usr/bin/google-chrome-stable}"
: "${CHROME_USER_DATA_DIR:=$HOME/.config/ha-kiosk/chrome-profile}"
export DISPLAY="$KIOSK_DISPLAY"
export XAUTHORITY="$KIOSK_XAUTHORITY"
# Allow the desktop and touchscreen to initialise.
sleep 2
# Map the touchscreen to the rotated built-in display.
xinput map-to-output \
"$TOUCH_DEVICE_NAME" \
"$TOUCH_DISPLAY_OUTPUT"
# Start Home Assistant in Chrome kiosk mode.
"$CHROME_BIN" \
--user-data-dir="$CHROME_USER_DATA_DIR" \
--kiosk \
--noerrdialogs \
--disable-session-crashed-bubble \
--no-first-run \
"$KIOSK_URL"
runtime/ha-kiosk-screen-control.service
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# SPDX-License-Identifier: GPL-3.0-or-later
[Unit]
Description=Home Assistant Kiosk MQTT Screen Control
After=network-online.target graphical-session.target
Wants=network-online.target
[Service]
Type=simple
EnvironmentFile=-%h/.config/ha-kiosk/systemd.env
ExecStart=%h/.local/lib/ha-kiosk-mqtt-control/screen-control.sh
Restart=always
RestartSec=5
[Install]
WantedBy=default.target
runtime/screen-control.sh
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runtime/systemd.env.example
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# SPDX-License-Identifier: GPL-3.0-or-later
# Values used by systemd ExecStopPost. Keep these simple (no spaces).
KIOSK_ID=my_kiosk
STATUS_ROOT=kiosk/status
telemetry/kiosk-telemetry.py
Executable
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#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-3.0-or-later
"""Publish low-overhead Linux kiosk performance telemetry to MQTT."""
import glob
import json
import os
import socket
import time
import psutil
import paho.mqtt.client as mqtt # type: ignore[import-not-found]
MQTT_HOST = os.environ["MQTT_HOST"]
MQTT_PORT = int(os.environ.get("MQTT_PORT", "1883"))
MQTT_USER = os.environ.get("MQTT_USER")
MQTT_PASSWORD = os.environ.get("MQTT_PASSWORD")
KIOSK_ID = os.environ.get("KIOSK_ID", "kiosk")
KIOSK_ENTITY_PREFIX = os.environ.get("KIOSK_ENTITY_PREFIX", f"{KIOSK_ID}_kiosk")
KIOSK_NAME = os.environ.get("KIOSK_NAME", f"{KIOSK_ID.replace('-', ' ').title()} Kiosk")
KIOSK_MANUFACTURER = os.environ.get("KIOSK_MANUFACTURER", "Unknown")
KIOSK_MODEL = os.environ.get("KIOSK_MODEL", "Linux Touchscreen Kiosk")
MQTT_TOPIC = os.environ.get("MQTT_TOPIC", f"{KIOSK_ID}/kiosk/performance")
SAMPLE_SECONDS = max(5, int(os.environ.get("SAMPLE_SECONDS", "10")))
STATE_TOPIC = f"{MQTT_TOPIC}/state"
AVAILABILITY_TOPIC = f"{MQTT_TOPIC}/availability"
DISCOVERY_PREFIX = os.environ.get("MQTT_DISCOVERY_PREFIX", "homeassistant")
DEVICE = {
"identifiers": [KIOSK_ENTITY_PREFIX],
"name": KIOSK_NAME,
"manufacturer": KIOSK_MANUFACTURER,
"model": KIOSK_MODEL,
}
METRICS = {
"system_cpu_percent": ("System CPU", "%", None, "measurement", "mdi:cpu-64-bit"),
"system_iowait_percent": ("CPU I/O Wait", "%", None, "measurement", "mdi:timer-sand"),
"load_1m": ("Load 1 Minute", None, None, "measurement", "mdi:gauge"),
"load_5m": ("Load 5 Minutes", None, None, "measurement", "mdi:gauge"),
"memory_percent": ("Memory Used", "%", None, "measurement", "mdi:memory"),
"cpu_temperature": ("CPU Temperature", "°C", "temperature", "measurement", "mdi:thermometer"),
"cpu_frequency": ("CPU Frequency", "MHz", "frequency", "measurement", "mdi:sine-wave"),
"fan_speed": ("Fan Speed", "rpm", None, "measurement", "mdi:fan"),
"processor_fan_speed": ("Processor Fan Speed", "rpm", None, "measurement", "mdi:fan"),
"motherboard_fan_speed": ("Motherboard Fan Speed", "rpm", None, "measurement", "mdi:fan"),
"chrome_cpu_percent": ("Chrome CPU", "%", None, "measurement", "mdi:google-chrome"),
"chrome_browser_cpu_percent": ("Chrome Browser CPU", "%", None, "measurement", "mdi:web"),
"chrome_renderer_cpu_percent": ("Chrome Renderer CPU", "%", None, "measurement", "mdi:monitor-dashboard"),
"chrome_gpu_cpu_percent": ("Chrome GPU Process CPU", "%", None, "measurement", "mdi:expansion-card"),
"chrome_utility_cpu_percent": ("Chrome Utility CPU", "%", None, "measurement", "mdi:cog-transfer"),
"chrome_memory": ("Chrome Memory", "MB", "data_size", "measurement", "mdi:memory"),
"chrome_processes": ("Chrome Processes", None, None, "measurement", "mdi:format-list-numbered"),
"gpu_busy_percent": ("GPU Busy", "%", None, "measurement", "mdi:expansion-card-variant"),
"network_receive_rate": ("Network Receive Rate", "kB/s", "data_rate", "measurement", "mdi:download-network"),
"network_transmit_rate": ("Network Transmit Rate", "kB/s", "data_rate", "measurement", "mdi:upload-network"),
"disk_read_rate": ("Disk Read Rate", "kB/s", "data_rate", "measurement", "mdi:harddisk"),
"disk_write_rate": ("Disk Write Rate", "kB/s", "data_rate", "measurement", "mdi:harddisk"),
}
def round_or_none(value, digits=1):
return round(value, digits) if value is not None else None
def cpu_temperature():
values = []
try:
for entries in psutil.sensors_temperatures().values():
values.extend(entry.current for entry in entries if entry.current is not None)
except (AttributeError, OSError):
pass
return max(values) if values else None
def fan_speeds():
result: dict[str, float | None] = {
"maximum": None,
"processor": None,
"motherboard": None,
}
try:
for entries in psutil.sensors_fans().values():
for entry in entries:
if entry.current is None:
continue
result["maximum"] = max(result["maximum"] or 0, entry.current)
label = (entry.label or "").lower()
if "processor" in label:
result["processor"] = entry.current
elif "motherboard" in label:
result["motherboard"] = entry.current
except (AttributeError, OSError):
pass
return result
def gpu_busy_percent():
for pattern in (
"/sys/class/drm/card*/device/gpu_busy_percent",
"/sys/class/drm/card*/gt_busy_percent",
):
for path in glob.glob(pattern):
try:
with open(path, encoding="ascii") as source:
return float(source.read().strip())
except (OSError, ValueError):
continue
return None
def chrome_processes():
processes = []
for process in psutil.process_iter(["name", "cmdline"]):
try:
name = (process.info["name"] or "").lower()
command = " ".join(process.info["cmdline"] or []).lower()
if not any(token in name for token in ("chrome", "chromium")):
continue
if "--type=renderer" in command:
group = "renderer"
elif "--type=gpu-process" in command:
group = "gpu"
elif "--type=utility" in command:
group = "utility"
elif "--type=" not in command:
group = "browser"
else:
group = "other"
process.cpu_percent(None)
processes.append((process, group))
except (psutil.AccessDenied, psutil.NoSuchProcess, psutil.ZombieProcess):
continue
return processes
def publish_discovery(client):
for key, (name, unit, device_class, state_class, icon) in METRICS.items():
config = {
"name": name,
"unique_id": f"{KIOSK_ENTITY_PREFIX}_{key}",
"state_topic": STATE_TOPIC,
"availability_topic": AVAILABILITY_TOPIC,
"value_template": f"{{{{ value_json.{key} }}}}",
"device": DEVICE,
"icon": icon,
}
if unit:
config["unit_of_measurement"] = unit
if device_class:
config["device_class"] = device_class
if state_class:
config["state_class"] = state_class
topic = f"{DISCOVERY_PREFIX}/sensor/{KIOSK_ENTITY_PREFIX}/{key}/config"
client.publish(topic, json.dumps(config, separators=(",", ":")), qos=1, retain=True)
def on_connect(client, userdata, flags, reason_code, properties=None):
"""Restore all MQTT state after the initial connection or a reconnect."""
publish_discovery(client)
client.publish(AVAILABILITY_TOPIC, "online", qos=1, retain=True)
def collect_sample():
chrome = chrome_processes()
net_before = psutil.net_io_counters()
disk_before = psutil.disk_io_counters()
cpu_times = psutil.cpu_times_percent(interval=SAMPLE_SECONDS, percpu=False)
net_after = psutil.net_io_counters()
disk_after = psutil.disk_io_counters()
cpu_by_group = {group: 0.0 for group in ("browser", "renderer", "gpu", "utility", "other")}
chrome_memory = 0
active_processes = 0
for process, group in chrome:
try:
cpu_by_group[group] += process.cpu_percent(None)
chrome_memory += process.memory_info().rss
active_processes += 1
except (psutil.AccessDenied, psutil.NoSuchProcess, psutil.ZombieProcess):
continue
load_1m, load_5m, _ = os.getloadavg()
frequency = psutil.cpu_freq()
fans = fan_speeds()
interval = float(SAMPLE_SECONDS)
disk_read_rate = None
disk_write_rate = None
if disk_before is not None and disk_after is not None:
disk_read_rate = (disk_after.read_bytes - disk_before.read_bytes) / interval / 1024
disk_write_rate = (disk_after.write_bytes - disk_before.write_bytes) / interval / 1024
sample = {
"timestamp": int(time.time()),
"hostname": socket.gethostname(),
"sample_seconds": SAMPLE_SECONDS,
"system_cpu_percent": round_or_none(100.0 - cpu_times.idle),
"system_iowait_percent": round_or_none(getattr(cpu_times, "iowait", 0.0)),
"load_1m": round(load_1m, 2),
"load_5m": round(load_5m, 2),
"memory_percent": round_or_none(psutil.virtual_memory().percent),
"cpu_temperature": round_or_none(cpu_temperature()),
"cpu_frequency": round_or_none(frequency.current if frequency else None, 0),
"fan_speed": round_or_none(fans["maximum"], 0),
"processor_fan_speed": round_or_none(fans["processor"], 0),
"motherboard_fan_speed": round_or_none(fans["motherboard"], 0),
"chrome_browser_cpu_percent": round_or_none(cpu_by_group["browser"]),
"chrome_renderer_cpu_percent": round_or_none(cpu_by_group["renderer"]),
"chrome_gpu_cpu_percent": round_or_none(cpu_by_group["gpu"]),
"chrome_utility_cpu_percent": round_or_none(cpu_by_group["utility"]),
"chrome_cpu_percent": round_or_none(sum(cpu_by_group.values())),
"chrome_memory": round(chrome_memory / 1048576, 1),
"chrome_processes": active_processes,
"gpu_busy_percent": round_or_none(gpu_busy_percent()),
"network_receive_rate": round((net_after.bytes_recv - net_before.bytes_recv) / interval / 1024, 1),
"network_transmit_rate": round((net_after.bytes_sent - net_before.bytes_sent) / interval / 1024, 1),
"disk_read_rate": round_or_none(disk_read_rate),
"disk_write_rate": round_or_none(disk_write_rate),
}
return sample
def main():
client = mqtt.Client(client_id=f"{KIOSK_ID}-kiosk-telemetry")
if MQTT_USER:
client.username_pw_set(MQTT_USER, MQTT_PASSWORD)
client.will_set(AVAILABILITY_TOPIC, "offline", qos=1, retain=True)
client.on_connect = on_connect
client.reconnect_delay_set(min_delay=1, max_delay=30)
client.connect(MQTT_HOST, MQTT_PORT, keepalive=60)
client.loop_start()
try:
while True:
payload = json.dumps(collect_sample(), separators=(",", ":"), allow_nan=False)
client.publish(STATE_TOPIC, payload, qos=0, retain=False)
finally:
client.publish(AVAILABILITY_TOPIC, "offline", qos=1, retain=True).wait_for_publish()
client.disconnect()
client.loop_stop()
if __name__ == "__main__":
main()
telemetry/kiosk-telemetry.service
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# SPDX-License-Identifier: GPL-3.0-or-later
[Unit]
Description=Kiosk MQTT performance telemetry
Wants=network-online.target
After=network-online.target
[Service]
Type=simple
EnvironmentFile=%h/.config/ha-kiosk/telemetry.env
ExecStart=/usr/bin/python3 %h/.local/lib/ha-kiosk-mqtt-control/kiosk-telemetry.py
Restart=always
RestartSec=10
[Install]
WantedBy=default.target
telemetry/telemetry.env.example
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# SPDX-License-Identifier: GPL-3.0-or-later
# Copy to ~/.config/ha-kiosk/telemetry.env. This example has no credentials.
MQTT_HOST=127.0.0.1
MQTT_PORT=1883
MQTT_USER=
MQTT_PASSWORD=
KIOSK_ID=my_kiosk
KIOSK_ENTITY_PREFIX=my_kiosk
KIOSK_NAME="My Kiosk"
KIOSK_MANUFACTURER=Generic
KIOSK_MODEL="Linux Touchscreen Kiosk"
MQTT_TOPIC=my_kiosk/performance
MQTT_DISCOVERY_PREFIX=homeassistant
SAMPLE_SECONDS=10