Add Light Color Mapper blueprint

Maps color sensor states to lights in real-time with index-based pairing.
Supports FPS throttling, brightness override, configurable behavior when
sensors are unavailable, and a post-update callback action.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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2026-02-18 21:28:07 +03:00
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# Light Color Mapper
Syncs light colors in real-time from color sensor entities. Sensors and lights are paired by list index (sensor 0 → light 0, sensor 1 → light 1, etc.).
## Features
- Real-time color sync from sensor entities to lights
- Index-based sensor-to-light mapping (add in matching order)
- FPS throttling for performance control (060 fps)
- Brightness override or per-sensor brightness from attributes
- Configurable behavior when sensors are unavailable (turn off, keep last, default color)
- Control entity (switch/input_boolean) to enable/disable
- Optional auto-off when the control entity is disabled
- Custom post-update callback action (runs after each update cycle)
## How It Works
The automation triggers on any state change from the configured color sensors. Each sensor is paired with a light by list position:
| Sensor Index | Light Index |
| --- | --- |
| Sensor 0 | Light 0 |
| Sensor 1 | Light 1 |
| Sensor 2 | Light 2 |
| ... | ... |
When a sensor updates, **all** sensor-light pairs are re-evaluated to keep lights in sync.
### FPS Throttling
The automation uses `mode: restart` with a trailing delay to throttle updates:
- **FPS = 0**: No throttle — every state change triggers an immediate update.
- **FPS > 0**: After processing all lights, a delay of `1000 / FPS` ms is added. If a new sensor state arrives during the delay, the automation restarts with the latest data. This naturally caps updates to the configured FPS.
### Sensor Requirements
Each color sensor should expose:
| Attribute | Description |
| --- | --- |
| **State** | Hex color string (e.g., `#FF8800`) or `None` when not processing |
| `rgb_color` | Color as `[r, g, b]` list (used to set light color) |
| `brightness` | Brightness value 0255 (used when no override is set) |
## Configuration
| Input | Description |
| --- | --- |
| **Control Entity** | Switch or input_boolean that enables/disables the automation |
| **Turn Off Lights on Disable** | Turn off all mapped lights when the control entity is switched off (default: true) |
| **Color Sensors** | List of color sensor entities (index-mapped to lights) |
| **Lights** | List of light entities (index-mapped to sensors) |
| **Maximum FPS** | Update rate limit, 0 = unlimited (default: 0) |
| **Brightness Override** | Fixed brightness for all lights, 0 = use sensor brightness (default: 0) |
| **When Sensor is Unavailable** | Action when sensor is None/unavailable: Turn Off, Keep Last, or Set Default Color |
| **Default Color** | Color to apply when sensor is unavailable and action is "Set Default Color" |
| **Post-Update Action** | Custom action to run after all lights are updated (e.g., fire an event, call a service) |
## Notes
- If the sensor and light lists have different lengths, only the shorter count of pairs is used (extra entities are ignored).
- When the control entity is turned off and "Turn Off Lights on Disable" is enabled, only the paired lights (up to `pair_count`) are turned off.
## Author
Alexei Dolgolyov (<dolgolyov.alexei@gmail.com>)

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# Light Color Mapper
# Syncs light colors in real-time from color sensor entities.
# See README.md for detailed documentation.
#
# Author: Alexei Dolgolyov (dolgolyov.alexei@gmail.com)
blueprint:
name: "Custom: Light Color Mapper"
description: >
Maps color sensor states to lights in real-time.
Sensors and lights are paired by list index (sensor 0 → light 0, etc.).
Supports FPS throttling, brightness override, and configurable behavior
when sensors are unavailable.
domain: automation
# ===========================================================================
# INPUT CONFIGURATION
# ===========================================================================
input:
# -------------------------------------------------------------------------
# Control
# -------------------------------------------------------------------------
control_group:
name: "Control"
collapsed: false
input:
control_entity:
name: Control Entity
description: "Switch or input_boolean that enables/disables this automation."
selector:
entity:
domain:
- input_boolean
- switch
turn_off_on_disable:
name: Turn Off Lights on Disable
description: "Turn off all mapped lights when the control entity is switched off."
default: true
selector:
boolean:
# -------------------------------------------------------------------------
# Devices
# -------------------------------------------------------------------------
devices_group:
name: "Devices"
collapsed: false
input:
color_sensors:
name: Color Sensors
description: >
List of color sensor entities. Each sensor's state is a hex color
string (e.g., #FF8800) with attributes: r, g, b, brightness,
rgb_color. Sensors are mapped to lights by list index.
selector:
entity:
domain: sensor
multiple: true
lights:
name: Lights
description: >
List of light entities. Each light is paired with the sensor at the
same list index (sensor 0 → light 0, sensor 1 → light 1, etc.).
selector:
entity:
domain: light
multiple: true
# -------------------------------------------------------------------------
# Settings
# -------------------------------------------------------------------------
settings_group:
name: "Settings"
collapsed: false
input:
max_fps:
name: Maximum FPS
description: >
Maximum updates per second. With mode: restart, a trailing delay
throttles updates naturally — new state changes during the delay
restart the automation with fresh data. Set to 0 for unlimited.
default: 0
selector:
number:
min: 0
max: 60
mode: slider
brightness_override:
name: Brightness Override
description: >
Override brightness for all lights (0255).
Set to 0 to use each sensor's brightness attribute instead.
default: 0
selector:
number:
min: 0
max: 255
mode: slider
none_action:
name: When Sensor is Unavailable
description: "Action to take when a sensor state is None, unknown, or unavailable."
default: "turn_off"
selector:
select:
options:
- label: "Turn Off Light"
value: "turn_off"
- label: "Keep Last Color"
value: "keep_last"
- label: "Set Default Color"
value: "default_color"
default_color:
name: Default Color
description: >
Color to apply when a sensor is unavailable.
Only used when "When Sensor is Unavailable" is set to "Set Default Color".
default: [255, 255, 255]
selector:
color_rgb:
# -------------------------------------------------------------------------
# Callback Actions
# -------------------------------------------------------------------------
actions_group:
name: "Callback Actions"
collapsed: true
input:
post_update_action:
name: Post-Update Action
description: >
Custom action to run after all sensor-light pairs have been processed.
Runs once per update cycle, after all lights are set.
Leave empty to do nothing.
default: []
selector:
action:
# -------------------------------------------------------------------------
# Debug
# -------------------------------------------------------------------------
debug:
name: "Debug"
collapsed: true
input:
enable_debug_notifications:
name: Enable Debug Notifications
description: >
Send persistent notifications showing sensor states and light
updates for troubleshooting.
default: false
selector:
boolean:
# Restart mode ensures the latest sensor state always wins.
# Combined with a trailing delay (FPS throttle), incoming state changes
# during the delay cancel the current run and restart with fresh data.
mode: restart
# =============================================================================
# TRIGGERS
# =============================================================================
trigger:
# Any color sensor changes state
- platform: state
entity_id: !input color_sensors
id: "sensor_changed"
# Control entity toggled on/off
- platform: state
entity_id: !input control_entity
id: "control_changed"
# =============================================================================
# VARIABLES
# =============================================================================
variables:
# ---------------------------------------------------------------------------
# Input References
# ---------------------------------------------------------------------------
control_entity: !input control_entity
turn_off_on_disable: !input turn_off_on_disable
color_sensors: !input color_sensors
lights: !input lights
max_fps: !input max_fps
brightness_override: !input brightness_override
none_action: !input none_action
default_color: !input default_color
enable_debug_notifications: !input enable_debug_notifications
post_update_action: !input post_update_action
# ---------------------------------------------------------------------------
# Computed Values
# ---------------------------------------------------------------------------
# Use the shorter list length to avoid index-out-of-range errors
pair_count: "{{ [color_sensors | length, lights | length] | min }}"
# =============================================================================
# ACTIONS
# =============================================================================
action:
# ---------------------------------------------------------------------------
# Debug Logging
# ---------------------------------------------------------------------------
- choose:
- conditions:
- condition: template
value_template: "{{ enable_debug_notifications }}"
sequence:
- service: persistent_notification.create
data:
title: "Light Color Mapper Debug"
message: >
**Trigger:** {{ trigger.id }}
**Control:** {{ states(control_entity) }}
**Pairs:** {{ pair_count }}
**FPS:** {{ max_fps }}
**Brightness Override:** {{ brightness_override }}
**Sensor States:**
{% for i in range(pair_count | int) %}
{{ i }}: {{ color_sensors[i] }} = {{ states(color_sensors[i]) }} (rgb: {{ state_attr(color_sensors[i], 'rgb_color') }}, brightness: {{ state_attr(color_sensors[i], 'brightness') }})
{% endfor %}
# ---------------------------------------------------------------------------
# Check Control Entity
# ---------------------------------------------------------------------------
- choose:
- conditions:
- condition: template
value_template: "{{ not is_state(control_entity, 'on') }}"
sequence:
# Turn off all mapped lights if configured
- choose:
- conditions:
- condition: template
value_template: "{{ turn_off_on_disable }}"
sequence:
- service: light.turn_off
target:
entity_id: "{{ lights[:pair_count | int] }}"
- stop: "Control entity is off"
# ---------------------------------------------------------------------------
# Process Each Sensor-Light Pair
# ---------------------------------------------------------------------------
- repeat:
count: "{{ pair_count | int }}"
sequence:
- variables:
idx: "{{ repeat.index - 1 }}"
current_sensor: "{{ color_sensors[idx] }}"
current_light: "{{ lights[idx] }}"
sensor_state: "{{ states(current_sensor) }}"
is_unavailable: "{{ sensor_state in ['None', 'none', 'unknown', 'unavailable', 'undefined'] or sensor_state | length == 0 }}"
- choose:
# Sensor is unavailable — apply configured action
- conditions:
- condition: template
value_template: "{{ is_unavailable }}"
sequence:
- choose:
# Turn off the light
- conditions:
- condition: template
value_template: "{{ none_action == 'turn_off' }}"
sequence:
- service: light.turn_off
target:
entity_id: "{{ current_light }}"
# Set default color
- conditions:
- condition: template
value_template: "{{ none_action == 'default_color' }}"
sequence:
- service: light.turn_on
target:
entity_id: "{{ current_light }}"
data:
rgb_color: "{{ default_color }}"
brightness: "{{ brightness_override | int if brightness_override | int > 0 else 255 }}"
# keep_last — do nothing
# Sensor has valid state — apply color to light
default:
- variables:
sensor_rgb: "{{ state_attr(current_sensor, 'rgb_color') | default([255, 255, 255]) }}"
sensor_brightness: "{{ state_attr(current_sensor, 'brightness') | default(255) }}"
target_brightness: "{{ brightness_override | int if brightness_override | int > 0 else sensor_brightness | int }}"
- service: light.turn_on
target:
entity_id: "{{ current_light }}"
data:
rgb_color: "{{ sensor_rgb }}"
brightness: "{{ target_brightness }}"
# ---------------------------------------------------------------------------
# Post-Update Callback
# ---------------------------------------------------------------------------
- choose:
- conditions:
- condition: template
value_template: "{{ post_update_action | length > 0 }}"
sequence: !input post_update_action
# ---------------------------------------------------------------------------
# FPS Throttle
# ---------------------------------------------------------------------------
# With mode: restart, new triggers during this delay cancel and restart
# the automation, effectively capping updates to max_fps per second.
- choose:
- conditions:
- condition: template
value_template: "{{ max_fps | int > 0 }}"
sequence:
- delay:
milliseconds: "{{ (1000 / (max_fps | int)) | int }}"