Magic Home for Node

Functionality ported from https://github.com/beville/flux_led to Node.js.

Features

Control lights which are usually controlled with this app with Node.

Control: Turn lights on and off. Set colors. Start effects. Make programmatic effects.
Discovery: Discover lights on the network.
CustomMode: Install custom effects (color fade, jump or strobe) with up to 16 colors.

Installation

npm install magic-home

You can also install the library globally with npm i -g magic-home. This gives you access to the Magic Home command line utility, aptly named magic-home. Run

$ magic-home

to get a list of commands and options.

Usage

Simple example:

const { Control } = require('magic-home');

let light = new Control("192.168.1.100");
light.setPower(true).then(success => {
	// do something with the result
});

Simple discovery example:

const { Discovery } = require('magic-home');

let discovery = new Discovery();
discovery.scan(500).then(devices => {
	// do something with the result
});

More examples are in cli.js and the examples directory.

Methods

Control

All methods return a promise which resolves to the specific value.
Each method has an optional callback parameter as well. All of these callbacks will be called with (err, value).

static get patternNames
Returns the hard-coded list of supported patterns as an array.

static ackMask(mask)
Create an ack option object by supplying a bitmask with the bits representing booleans. Bit 1 = power, Bit 2 = color, Bit 3 = pattern, Bit 4 = custom_pattern.
Example: Control.ackMask(1) would set power to true and all other values to false.

constructor(address, options)
Creates a new instance of the API. This does not connect to the light yet.
Accepted options:

• ack An object of the form { power: true, color: true, pattern: true, custom_pattern: true } indicating for which types of command an acknowledging response is expected. Some controllers acknowledge some commands and others don't, so this option has to be found out by trial-and-error. Check out the wiki for more information about this parameter. You can use the Control.ackMask(mask) static function for convenience to set all options with less code.
• log_all_received Log all received data to the console for debug purposes. (Default: false)
• apply_masks Set a special mask bit in the setColor and setWarmWhite methods, which is required for some controllers, which can't set both values at the same time, like bulbs for example. This value is automatically set to true if queryState detects a controller of type 0x25, 0x35 or 0x44. (Default: false)
• connect_timeout Duration in milliseconds after which a controller will be regarded as non-reachable, if a connection can not be established. Normally, this should be handled by your OS and you get an EHOSTUNREACH error, but this allows you to set a custom timeout yourself. (Default: null [No timeout/let the OS handle it])
• command_timeout Duration in milliseconds after which the library will consider an acknowledged command as lost. Set to null to disable the timeout. (Default: 1000)
• cold_white_support Enable support for changing cold white values. Only enable this if your controller actually supports it, otherwise you won't be able to change the colors. This value is automatically set to true if queryState detects a controller of type 0x35. (Default: false)
• wait_for_reply [Deprecated, use ack option instead]

setPower(on, callback)
Turns a light either on or off.

turnOn(callback)
Convenience method to call setPower(true).

turnOff(callback)
Convenience method to call setPower(false).

setColorAndWarmWhite(red, green, blue, ww, callback)
Sets both color and warm white value at the same time. This method will not work on lights that don't support both colors and whites being activated at the same time; use either setColor or setWarmWhite.

setColorAndWhites(red, green, blue, ww, cw, callback)
Sets color, warm white as well as cold white values at the same time, if cold_white_support is enabled. This method will not work on lights that don't support both colors and whites being being activated at the same time; use either setColor or setWhites.

setColor(red, green, blue, callback)
Sets only the color values. Because the command has to include both color and white values, previously seen white values will be sent together with the color values, if masks are not enabled.

setWarmWhite(ww, callback)
Set only the the warm white value. Because the command has to include both color and white values, previously seen color and cold white values will be sent together with the warm white value, if masks are not enabled.

setWhites(ww, cw, callback)
Set only the warm and cold white values. Because the command has to include both color and white values, previously seen color values will be sent together with the white values, if masks are not enabled.

setColorWithBrightness(red, green, blue, brightness, callback)
Convenience method to automatically scale down the rgb values to match the brightness parameter (0 - 100). This method uses setColor() internally, so it could set the warm white value to something unexpected.

setPattern(pattern, speed, callback)
Sets the light to play a built-in pattern. The pattern parameter is a string which indicates the pattern (complete list below). The speed parameter has to be between 0 and 100.

setCustomPattern(pattern, speed, callback)
Sets the light to play a custom pattern, defined with the CustomMode (see below). An example can be found in examples/custom_mode_test.js. The speed parameter has to be between 0 and 100.

setIAPattern(code, speed, callback)
Sets the light to a pattern where each LED has it's own animation. The code has to be between 1 and 300 and the speed parameter has to be between 0 and 100. Only works for controllers which connect to a strip of individually adressable LEDs (e.g. WS2812B).

queryState(callback)
Gets the state of the light. Example state:

{
	type: 0x33, // can also be 0x04, 0x25 or 0x81 according to the python library
	on: true,
	mode: "color", // color, custom, special, pattern, ia_pattern
	pattern: null // number of the ia_pattern (mode == "ia_pattern"), name of pattern (mode == "pattern") or null
	speed: 50, // playback speed of the current pattern
	color: {
		red: 255,
		green: 0,
		blue: 255
	},
	warm_white: 0,
	cold_white: 0 // some controllers support this value, but you can only set if when cold_white_support is enabled
}

startEffectMode(callback)
Start the effect mode. In this mode, a single connection will be kept open, instead of reconnecting for every command. This method resolves to the EffectInterface (documented below) once the persistent connection to the controller is established. An example can be found in examples/effect_test.js. This can be used to replicate the music visualization from the app for example.

EffectInterface

An instance of this class is obtained by calling startEffectMode.

start(interval_function)
Starts the effect mode. The interval_function will be called every time the last command has been fully processed. It will be called without any parameters.

setColor(red, green, blue)
This method is only supposed to be called from within the interval_function. Sets the color.

delay(milliseconds)
This method is only supposed to be called from within the interval_function. Calling this method, will lead to the next call to the interval function to happen after the specified time.

stop()
Closes the connection to the light and leads to the interval function not being called anymore.

Discovery

static scan(timeout)
This static method can be used for convenience when the list of clients does not need to be stored within the Discovery instance and when the callback parameter is not needed.

constructor()
Creates a new instance of the Discovery Mode. This does not perform the actual scan yet.

scan(timeout, callback)
Broadcasts a discovery packet to the network and then waits timeout milliseconds for a reply from the controllers. The devices are returned in an array of objects like this:

{
	address: "<ip address>",
	id: "<12 character ID>",
	model: "<Model number>"
}

get clients
Contains the list of clients returned in the last call to scan().

get scanned
Boolean value indicating if scan() has already been called on this instance.

CustomMode

All methods in this class can be chained together.

constructor()

addColor(red, green blue)
Appends the specified color to the list of colors in the effect.

addColorList(list)
Appends multiple colors at once. The list needs to have the format [ [r1, g1, b1], [r2, g2, b2], ...]

setTransitionType(type)
Set the type of the transition to be either fade, jump, or strobe.

Built-in patterns

seven_color_cross_fade
red_gradual_change
green_gradual_change
blue_gradual_change
yellow_gradual_change
cyan_gradual_change
purple_gradual_change
white_gradual_change
red_green_cross_fade
red_blue_cross_fade
green_blue_cross_fade
seven_color_strobe_flash
red_strobe_flash
green_strobe_flash
blue_stobe_flash
yellow_strobe_flash
cyan_strobe_flash
purple_strobe_flash
white_strobe_flash
seven_color_jumping

Troubleshooting

My promises don't resolve

https://github.com/jangxx/node-magichome/wiki/Understanding-the-ack-parameter

My promises always reject with a "Command timed out" error

https://github.com/jangxx/node-magichome/wiki/Understanding-the-ack-parameter