Yeedart

Dart library for controlling Yeelight products over LAN.

More info about Yeelight API:

• https://www.yeelight.com/en_US/developer
• https://www.yeelight.com/download/Yeelight_Inter-Operation_Spec.pdf

Contents

• Installation
• Usage
  • Device discovery
  • Connect to the device
  • Main and background light
• Flow
• Scene
• Features and bugs

Installation

1. Depend on it

Run this command:

With dart:

$ dart pub add yeedart

With flutter:

$ flutter pub add yeedart

This will add a line like this to your package's pubspec.yaml (and run an implicit dart pub get/flutter pub get):

dependencies:
  yeedart: ^0.3.2

2. Import it

Now in your Dart code, you can use:

import 'package:yeedart/yeedart.dart';

Usage

Device discovery

First of all, you need to know your device's IP address and port. You can use Yeelight.discover() method which returns list of DiscoveryResponse.

final responses = await Yeelight.discover();
final response = responses.first; // or filter..

Each response contains IP address and port for given device and other properties (name, firmware version, current state,...).

ℹ️ You can also specify timeout for discovery. Default is 2 seconds.

Note that for device discovery to properly work on Android, you at least need the INTERNET permission granted.

Connect to the device

final device = Device(
  address: InternetAddress("192.168.1.183"),
  port: 55443,
);

await device.turnOn(); // turn the device on

// set red color with smooth transition
await device.setRGB(
  color: Colors.red,
  effect: const Effect.smooth(),
  duration: const Duration(milliseconds: 500),
);

await device.setBrightness(brightness: 70); // set brightness to 70 %

device.disconnect(); // always disconnect when you are done!

⚠️ When you send a Command, new TCP connection will be created automatically. This single TCP connection is then used for another command(s). But when you are done, you should close the connection.

ℹ️ Note that when you call device.disconnect() and then call for example device.turnOff(), new TCP connection will be created automatically.

ℹ️ If you don't want to send any command and just listen on the notificationMessageStream, use the device.connect() to create a connection manually.

ℹ️ Also note that Yeelight connections are rate-limited to 60 per minute.

Main and background light

Some devices can be equiped with two lights: main and background. Methods in Device class control main light by default (for example device.setRGB(color: Colors.red) sets RGB color for main light. If you want to set RGB color for background light, you have to specify lightType parameter: device.setRGB(color: Colors.red, lightType: LightType.backgroud);.

You can also use LightType.both but ONLY for toggling: device.toggle(lightType: LightType.both).

Flow

Flow (color flow) is basically a list of transitions. To start a flow use startFlow() method and provide Flow. Flow has 3 required parameters:

• count - number of transitions to run, 0 for infinite loop. If you have 10 transitions and count is 5, it will run only first 5 transitions!
• action - specifies action to take after the flow ends.
  • FlowAction.stay to stay at the last state when the flow is stopped.
  • FlowAction.recover to recover the state before the flow.
  • FlowAction.turnOff to turn off.
• transitions - list of FlowTransition, FlowTransition.rgb(), FlowTransition.colorTemperature() or FlowTransition.sleep().

Following example will loop red, green and blue colors at full brightness.

await device.startFlow(
  flow: const Flow(
    count: 0,
    action: FlowAction.recover(),
    transitions: [
      FlowTransition.rgb(color: 0xff0000, brightness: 100),
      FlowTransition.sleep(duration: Duration(milliseconds: 500)),
      FlowTransition.rgb(color: 0x00ff00, brightness: 100),
      FlowTransition.sleep(duration: Duration(milliseconds: 500)),
      FlowTransition.rgb(color: 0x0000ff, brightness: 100),
      FlowTransition.sleep(duration: Duration(milliseconds: 500)),
    ],
  ),
);

To manually stop flow, use device.stopFlow().

This library also includes some predefined flows:

• Flow.rgb() - changes color from red, to green to blue
• Flow.police - changes red and blue color like police lights.
• Flow.pulse() - creates pulse with given color

Scene

Scene allows you to set light to specific state. To use scene, use setScene() method and provide Scene.

You can use:

• Scene.color() or Scene.hsv() to set color and brightness
• Scene.colorTemperature to set color temperature and brightness
• Scene.colorFlow() to start a color Flow
• Scene.autoDelayOff() to turn on the device to specified brightness and start a timer to turn off the light after specified number of minutes.

Example:

device.setScene(scene: Scene.color(color: 0xff0000, brightness: 100));

Features and bugs

Please file feature requests and bugs at the issue tracker.