Philips Hue nodes for Node-Red

An solution to control Philips Hue lights using Node-Red, uses node-hue-api library for communicating with the lights.

This module provides input and output nodes for communicating with Philips Hue lights, the input node accepts multiple color format and automatically converts the values to the right format.

Features

• Control both groups and individual lights.
• Handles automatic conversion of rgb/hsv/hex/xy/.. color space to light specific color space
• Trigger events for light changes
• Self syncing, uses background polling to detect external changes to light
• Displays current state for light in the Node-Red ui

TODO

• The HSV to XY (and back) color conversion is not 100% correct, modifying single color channel at a time can produce strange results.

Examples

Dashboard example config:

This is an example of how to control the light using the node-red-dashboard The split node is used to get the on and bri payload from the light status message, and the join is used to combine the topic and value to an JSON object.

Wakeup example config:

Simple example of using an inject node to trigger an wakeup light behavior every workday, the light transitions from off to on with 75% brightness over an duration of 30s.

Hub Configuration

Light Configuration

Input node

The light is controlled by sending message with an payload containing the new state

Simplified control by sending the following values as payload

Value	Info
'on' or true	Turn light on
'off'or false	Turn light off
numeric value	Turn light on and set brightness (0-100%)

More advanced way to control the light is to send an object payload with one or more of the following properties set

Property	Info
on	Set light state (true/false)
red, green and/or blue	Set one or more color channel for light (0-255)
hex	Set color (#f49242)
hue	Set color hue (0-360)
xy	Set XY color (array with 0.0-1.0 values)
x and/or y	Set XY color (0.0-1.0)
sat or saturation	Set color saturation (0-100)
bri or brightness	Set light brightness (0-100%)
ct, mired or mirek	Set Mired color temperature (153 - 500)
kelvin	Set kelvin color temperature (2200-6500)
duration	Transition time (ms)
alert	Alert effect ('none', 'select' or 'lselect')
effect	Dynamic effect ('none' or 'colorloop')

Example: Sending the following to the light will turn it on and dim it upp to 77% over 10 seconds

{
  "payload": {
    "on": true, 
    "bri": 77,
    "duration": 10000
  }
}

Output node

Example output from change event

{
  "id": "light3",
  "info": {
    "id": "3",
    "name": "Bedroom 1",
    "capability": [ "bri", "ct" ],
    "group": false,
    "type": "Color temperature light",
    "uniqueid": "00:17:88:01:02:06:ef:5c-0b",
    "modelid": "LTW001"
  },
  "payload": {
    "on": true,
    "reachable": true,
    "bri": 12,
    "xy": [ 0.3244, 0.3373 ],
    "hsv": [ 27, 10, 12 ],
    "rgb": [ 31, 29, 28 ],
    "hex": "1F1D1C",
    "color": "black",
    "mired": 189,
    "kelvin": 5291
  },
  "state": {
    "on": true,
    "bri": 31,
    "ct": 189,
    "colormode": "ct"
  },
  "event": "change"
}

Using withouth Node-RED

This library can be used independent from Node-RED, the example/mqtt.js file contains an simple example using MQTT.js to enable control an lights on/off status and brightness over MQTT.

The MQTT topic lights will contain an list of all currently detected lights. Specific light can be controlled by sending an message to the topics lights/<id>/on (boolean) or lights/<id>/brightness (number) with the new state.