Awesome

LIFX LAN Node.js Library

A Node.js implementation of the LIFX protocol. Developed to work with a minimum firmware version of 2.0.

This library is not, in any way, affiliated or related to LiFi Labs, Inc.. Use it at your own risk.

Installation

$ npm install lifx-lan-client --save

$ yarn add lifx-lan-client

Compatibility

Node LTS and current versions are tested and supported on Mac, Linux and Windows. Older versions may work but are not supported or tested.

Usage

The file cli.js contains a working example.

Client

The library uses a client for network communication. This client handles communication with all lights in the network.

var LifxClient = require('lifx-lan-client').Client;
var client = new LifxClient();

client.init();

The Client object is an EventEmitter and emmits events whenever any changes occur. This can be a new light discovery, a light sending a message or similar. The client starts discovery of lights right after it is initialized with the init method. If a new light is found the client emmits a light-new event. This event contains the light as an object on which methods can be called then:

var LifxClient = require('lifx-lan-client').Client;
var client = new LifxClient();

client.on('light-new', function(light) {
  // Change light state here
});

client.init();

Changing light state

The states of a light can be changed with different methods:

light.on([duration], [callback])

This turns a light on.

Usage examples:

light.on(); // Turns the light on instantly
light.on(2000); // Fading the light on over two seconds

light.off([duration], [callback])

This turns a light off.

Usage examples:

light.off(); // Turns the light off instantly
light.off(2000); // Fading the light off over two seconds

light.color(hue, saturation, brightness, [kelvin], [duration], [callback])

Changes the color of a light to an HSB color value. This is the preferred method to change the color of a light.

Usage examples:

light.color(0, 100, 50); // Set to red at 50% brightness
light.color(50, 50, 80, 3500, 2000); // Set to a light green at 80% brightness over next two seconds

light.colorRgbHex(hexString, [duration], [callback])

Changes the color of a light to an RGB color value given in Hex Format. Note that RGB poorly represents color of light, prefer HSBK values given via the color method.

Usage examples:

light.colorRgbHex('#F00'); // Set to red
light.colorRgbHex('#FFFF00'); // Set to yellow

light.colorRgb(red, green, blue, [duration], [callback])

Changes the color of a light to an RGB color value. Note that RGB poorly represents color of light, prefer HSBK values given via the color method.

Usage examples:

light.colorRgb(255, 0, 0); // Set to red
light.colorRgb(255, 255, 0); // Set to yellow

light.setMultiZoneEffect(effectName, speed, direction, [callback])

Changes a color zone range to the given HSBK value

light.maxIR(brightness, callback)

Set's the maximum infrared brightness of the light (only for lights that support infrared light)

Usage examples:

light.maxIR(0); // Set's a maximum infrared brightness of 0
light.maxIR(25); // Set's a maximum infrared brightness of 25

light.waveform(hue, saturation, brightness, [kelvin], [transient], [period], [cycles], [skewRatio], [waveform], [callback])

Apply a waveform effect to the bulb.

Also see the LIFX waveform docs

Usage examples:

light.waveform(0, 100, 50); // Set to a basic red wave at 50% brightness
light.waveform(50, 50, 80, 3500, true, 200, 5); // Set to a light green wave at 80% brightness over next two seconds, which will return to the previous color after five 200ms cycles

light.getMaxIR(callback)

Requests the maximum infrared brightness of the light (only for lights that support infrared light)

Example result:

null,
{
  brightness: 25
}

Requesting light state and info

Infos of the state and spec of the light can be requested with the following methods:

light.getState(callback)

Requests general info from a light, this includes color, label and power state. This function is asynchronous.

Example result:

null,
{
  color: { hue: 120, saturation: 0, brightness: 100, kelvin: 8994 },
  power: 0,
  label: 'Kitchen'
}

light.getPower(callback)

Requests current power state (on or off). This function is asynchronous.

Example result:

null,
0 // off

light.getFirmwareVersion(callback)

Requests the firmware version from a light (minor and major version). This function is asynchronous.

Example result:

null,
{
  majorVersion: 2,
  minorVersion: 1
}

light.getHardwareVersion(callback)

Requests the hardware version from a light (vendor, product and version). This function is asynchronous.

Example result:

null,
{
  vendorId: 1,
  vendorName: 'LIFX',
  productId: 1,
  productName: 'Original 1000',
  version: 6,
  productFeatures: {
    color: true,
    infrared: false,
    multizone: false
  }
}

light.getFirmwareInfo(callback)

Requests info from the micro controller unit of a light (signal, tx and rx). This function is asynchronous.

Example result:

null,
{
  signal: 0,
  tx: 0,
  rx: 0
}

light.getWifiInfo(callback)

Requests wifi info from a light (signal, tx and rx). This function is asynchronous.

Example result:

null,
{
  signal: 0.000009999999747378752,
  tx: 16584,
  rx: 12580
}

light.getWifiVersion(callback)

Requests the wifi firmware version from the light (minor and major version). This function is asynchronous.

Example result:

null,
{
  majorVersion: 2,
  minorVersion: 1
}

light.getAmbientLight(callback)

Requests the ambient light value in flux from the light. This function is asynchronous.

Example result:

null,
10

Switch

The following methods are used to control a Switch device with relays:

light.hasRelays(callback)

Checks to see if the device is a switch with relays. This function is asynchronous.

Example result:

true

light.getRelayPower(relayIndex, callback)

Gets the value of the relay at zero-based index i (0-3). This function is asynchronous.

Example result:

null,
65535

light.relayOn(relayIndex, callback)

Turns the relay on. This function is asynchronous.

Example result:

null,
65535

light.relayOff(relayIndex, callback)

Turns the relay off. This function is asynchronous.

Example result:

null,
0

Labels

Labels of lights can be requested and set using the following methods:

light.getLabel(callback, [cache])

Requests the label of a light. This function is asynchronous.

Example result:

null,
'Kitchen'

light.setLabel(label, [callback])

Sets a new label for a light.

Usage examples:

light.setLabel('Bedroom Light');
light.setLabel('Kitchen Light 4', function(err) {
  if (err) { throw err; }
  console.log('New light label has been set');
});

Get a light

client.light(identifier)

Find a light in the list off all lights by ip, label or id.

Returns a light object that can then be used to call methods on it. For example client.light('192.168.2.102').on().

Get all lights

client.lights([filter])

Get a list of all known lights

Client events

The following events might be thrown by the client.

light-new

This event is thrown when there is a new light discovery that has not been seen at runtime before. This event is provided with the new light object. client.on('light-new', function(light) {});

light-offline

This event is thrown when a light hasn't been discovered for a time. The light given is no longer expected to be reachable. client.on('light-offline', function(light) {});

light-online

This event is thrown when a light is discovered again after being offline. client.on('light-online', function(light) {});

Start / Stop discovery

The discovery for each client can be started and stopped at runtime using these commands:

client.startDiscovery()

Starts the discovery process.

client.stopDiscovery()

Stops the discovery process.

Client settings

For the initialization of the client different settings can be provided. This is an example with the default options:

var LifxClient = require('lifx-lan-client').Client;
var client = new LifxClient();

// ...

client.init({
  lightOfflineTolerance: 3, // A light is offline if not seen for the given amount of discoveries
  messageHandlerTimeout: 45000, // in ms, if not answer in time an error is provided to get methods
  startDiscovery: true, // start discovery after initialization
  resendPacketDelay: 150, // delay between packages if light did not receive a packet (for setting methods with callback)
  resendMaxTimes: 3, // resend packages x times if light did not receive a packet (for setting methods with callback)
  debug: false, // logs all messages in console if turned on
  address: '0.0.0.0', // the IPv4 address to bind the udp connection to
  broadcast: '255.255.255.255', // set's the IPv4 broadcast address which is addressed to discover bulbs
  lights: [], // Can be used provide a list of known light IPv4 ip addresses if broadcast packets in network are not allowed
              // For example: ['192.168.0.112', '192.168.0.114'], this will then be addressed directly
  stopAfterDiscovery: false, // stops discovery process after discovering all known lights (requires list
                             // of addresses provided with "lights" setting)
  discoveryInterval: 5000, // Interval (in ms) between discovery operations
  messageRateLimit: 50, // The delay (in ms) between sending any two packets to a single light
});