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README.md |
esp32_ethernet_milight_hub
Fork of ESP8266 Milight Hub Project (see below) modified for Olimex ESP32-POE IoT WiFi/BLE/Ethernet Dev Board
Modified readme for details on connect my fork, some details must be updated:
This is a replacement for a Milight/LimitlessLED remote/gateway hosted on an ESP8266. Leverages Henryk Plötz's awesome reverse-engineering work.
Milight bulbs are cheap smart bulbs that are controllable with an undocumented 2.4 GHz protocol. In order to control them, you either need a remote ($13), which allows you to control them directly, or a WiFi gateway ($30), which allows you to control them with a mobile app or a UDP protocol.
This project is a replacement for the wifi gateway.
This guide on my blog details setting one of these up.
Why this is useful
- Both the remote and the WiFi gateway are limited to four groups. This means if you want to control more than four groups of bulbs, you need another remote or another gateway. This project allows you to control 262,144 groups (4*2^16, the limit imposed by the protocol).
- This project exposes a nice REST API to control your bulbs.
- You can secure the ESP8266 with a username/password, which is more than you can say for the Milight gateway! (The 2.4 GHz protocol is still totally insecure, so this doesn't accomplish much :).
- Official hubs connect to remote servers to enable WAN access, and this behavior is not disableable.
- This project is capable of passively listening for Milight packets sent from other devices (like remotes). It can publish data from intercepted packets to MQTT. This could, for example, allow the use of Milight remotes while keeping your home automation platform's state in sync. See the MQTT section for more detail.
Supported remotes
The following remotes can be emulated:
Support has been added for the following bulb types:
Model # | Name | Compatible Bulbs |
---|---|---|
FUT096 | RGB/W |
|
FUT005 FUT006 FUT007 |
CCT |
|
FUT098 | RGB | Most RGB LED Strip Controlers |
FUT020 | RGB | Some other RGB LED strip controllers |
FUT092 | RGB/CCT |
|
FUT091 | CCT v2 | Most newer dual white bulbs and controllers |
FUT089 | 8-zone RGB/CCT | Most newer rgb + dual white bulbs and controllers |
Other remotes or bulbs, but have not been tested.
What you'll need
- An ESP8266. I used a NodeMCU.
- A NRF24L01+ module (~$3 on ebay). Alternatively, you can use a LT8900.
- Some way to connect the two (7 female/female dupont cables is probably easiest).
Installing
Connect the NRF24L01+ / LT8900
This project is compatible with both NRF24L01 and LT8900 radios. LT8900 is the same model used in the official MiLight devices. NRF24s are a very common 2.4 GHz radio device, but require software emulation of the LT8900's packet structure. As such, the LT8900 is more performant.
Both modules are SPI devices and should be connected to the standard SPI pins on the ESP8266.
NRF24L01+
This guide details how to connect an NRF24 to an ESP32. These can be configured later in the Web GUI under Settings -> Setup.
![](https://git.bit-cloud.de/carsten.schmiemann/esp32_ethernet_milight_hub/raw/branch/master/pictures/nrf24.png)
![](https://git.bit-cloud.de/carsten.schmiemann/esp32_ethernet_milight_hub/raw/branch/master/pictures/nodemcu.png)
NodeMCU | Radio | Color |
---|---|---|
GND | GND | Black |
3V3 | VCC | Red |
D2 (GPIO4) | CE | Orange |
D8 (GPIO15) | CSN/CS | Yellow |
D5 (GPIO14) | SCK | Green |
D7 (GPIO13) | MOSI | Blue |
D6 (GPIO12) | MISO | Violet |
Image source: MySensors.org
LT8900
Connect SPI pins (CE, SCK, MOSI, MISO) to appropriate SPI pins on the ESP32-PoE.
Setting up the ESP
The goal here is to flash your ESP with the firmware. It's really easy to do this with PlatformIO:
export ESP_BOARD=esp32-poe
platformio run -e $ESP_BOARD --target upload
Of course make sure to substitute esp32-poe
with the board that you're using.
You can find pre-compiled firmware images on the releases.
Configure WiFi & Ethernet
This project uses WiFiManager to avoid the need to hardcode AP credentials in the firmware.
When the ESP powers on, you should be able to see a network named "ESPXXXXX", with XXXXX being an identifier for your ESP. Connect to this AP and a window should pop up prompting you to enter WiFi credentials.
The network password is "milightHub".
You must first set up wifi, because many network libraries are hardcoded to user WiFi. Afterwards you login and disable Wifi under settings, so only ethernet is used.
Get IP Address
Both mDNS and SSDP are supported.
- OS X - you should be able to navigate to http://milight-hub.local.
- Windows - you should see a device called "ESP8266 MiLight Gateway" show up in your network explorer.
- Linux users can install avahi (
sudo apt-get install avahi-daemon
on Ubuntu), and should then be able to navigate to http://milight-hub.local.
Use it!
The HTTP endpoints (shown below) will be fully functional at this point. You should also be able to navigate to http://<ip_of_esp>
, or http://esp32-milight-hub.local
if your client supports mDNS. The UI should look like this:
If it does not work as expected see Troubleshooting.
Pair Bulbs
If you need to pair some bulbs, how to do this is described in the wiki.
Device Aliases
You can configure aliases or labels for a given (Device Type, Device ID, Group ID) tuple. For example, you might want to call the RGB+CCT remote with the ID 0x1111
and the Group ID 1
to be called living_room
. Aliases are useful in a couple of different ways:
- In the UI: the aliases dropdown shows all previously set aliases. When one is selected, the corresponding Device ID, Device Type, and Group ID are selected. This allows you to not need to memorize the ID parameters for each lighting device if you're controlling them through the UI.
- In the REST API: standard CRUD verbs (
GET
,PUT
, andDELETE
) allow you to interact with aliases via the/gateways/:device_alias
route. - MQTT: you can configure topics to listen for commands and publish updates/state using aliases rather than IDs.
REST API
The REST API is specified using the OpenAPI v3 specification.
openapi.yaml contains the raw spec.
You can view generated documentation for the master branch here.
Docs for other branches can be found here
MQTT
To configure your ESP to integrate with MQTT, fill out the following settings:
mqtt_server
- IP or hostname should work. Specify a port with standard syntax (e.g., "mymqttbroker.com:1884").mqtt_topic_pattern
- you can control arbitrary configurations of device ID, device type, and group ID with this. A good default choice is something likemilight/:device_id/:device_type/:group_id
. More detail is provided below.- (optionally)
mqtt_username
- (optionally)
mqtt_password
More detail on mqtt_topic_pattern
mqtt_topic_pattern
leverages single-level wildcards (documented here). For example, specifying milight/:device_id/:device_type/:group_id
will cause the ESP to subscribe to the topic milight/+/+/+
. It will then interpret the second, third, and fourth tokens in topics it receives messages on as :device_id
, :device_type
, and :group_id
, respectively. The following tokens are available:
:device_id
- Device ID. Can be hexadecimal (e.g.0x1234
) or decimal (e.g.4660
).:device_type
- Remote type.rgbw
,fut089
, etc.:group_id
- Group. 0-4 for most remotes. The "All" group is group 0.:device_alias
- Alias for the given device. Note that if an alias is not configured, a default token__unnamed_group
will be substituted instead.
Messages should be JSON objects using exactly the same schema that the REST gateway uses for the /gateways/:device_id/:device_type/:group_id
endpoint.
Example:
If mqtt_topic_pattern
is set to milight/:device_id/:device_type/:group_id
, you could send the following message to it (the below example uses a ruby MQTT client):
irb(main):001:0> require 'mqtt'
irb(main):002:0> client = MQTT::Client.new('10.133.8.11',1883)
irb(main):003:0> client.connect
irb(main):004:0> client.publish('milight/0x118D/rgb_cct/1', '{"status":"ON","color":{"r":255,"g":200,"b":255},"brightness":100}')
This will instruct the ESP to send messages to RGB+CCT bulbs with device ID 0x118D
in group 1 to turn on, set color to RGB(255,200,255), and brightness to 100.
Updates
ESPMH is capable of providing two types of updates:
- Delta: as packets are received, they are translated into the corresponding command (e.g., "set brightness to 50"). The translated command is sent as an update.
- State: When an update is received, the corresponding command is applied to known group state, and the whole state for the group is transmitted.
Delta updates
To publish data from intercepted packets to an MQTT topic, configure MQTT server settings, and set the mqtt_update_topic_pattern
to something of your choice. As with mqtt_topic_pattern
, the tokens :device_id
, :device_type
, and :group_id
will be substituted with the values from the relevant packet. :device_id
will always be substituted with the hexadecimal value of the ID. You can also use :hex_device_id
, or :dec_device_id
if you prefer decimal.
The published message is a JSON blob containing the state that was changed.
As an example, if mqtt_update_topic_pattern
is set to milight/updates/:hex_device_id/:device_type/:group_id
, and the group 1 on button of a Milight remote is pressed, the following update will be dispatched:
irb(main):005:0> client.subscribe('milight/updates/+/+/+')
=> 27
irb(main):006:0> puts client.get.inspect
["lights/updates/0x1C8E/rgb_cct/1", "{\"status\":\"on\"}"]
Full state updates
For this mode, mqtt_state_topic_pattern
should be set to something like milight/states/:hex_device_id/:device_type/:group_id
. As an example:
irb(main):005:0> client.subscribe('milight/states/+/+/+')
=> 27
irb(main):006:0> puts client.get.inspect
["lights/states/0x1C8E/rgb_cct/1", "{\"state\":\"ON\",\"brightness\":255,\"color_temp\":370,\"bulb_mode\":\"white\"}"]
irb(main):007:0> puts client.get.inspect
["lights/states/0x1C8E/rgb_cct/1", "{\"state\":\"ON\",\"brightness\":100,\"color_temp\":370,\"bulb_mode\":\"white\"}"]
Make sure that mqtt_topic_pattern
, mqtt_state_topic_pattern
, and matt_update_topic_pattern
are all different! If they are they same you can put your ESP in a loop where its own updates trigger an infinite command loop.
Customize fields
You can select which fields should be included in state updates by configuring the group_state_fields
parameter. Available fields should be mostly self explanatory, but are all documented in the REST API spec under GroupStateField
.
Client Status
To receive updates when the MQTT client connects or disconnects from the broker, confugre the mqtt_client_status_topic
parameter. A message of the following form will be published:
{"status":"disconnected_unclean","firmware":"milight-hub","version":"1.9.0-rc3","ip_address":"192.168.1.111","reset_reason":"External System"}
If you wish to have the simple messages connected
and disconnected
instead of the above environmental data, configure simple_mqtt_client_status
to true
(or set Client Status Message Mode to "Simple" in the Web UI).
UDP Gateways
You can add an arbitrary number of UDP gateways through the REST API or through the web UI. Each gateway server listens on a port and responds to the standard set of commands supported by the Milight protocol. This should allow you to use one of these with standard Milight integrations (SmartThings, Home Assistant, OpenHAB, etc.).
You can select between versions 5 and 6 of the UDP protocol (documented here). Version 6 has support for the newer RGB+CCT bulbs and also includes response packets, which can theoretically improve reliability. Version 5 has much smaller packets and is probably lower latency.
Transitions
Transitions between two given states are supported. Depending on how transition commands are being issued, the duration and smoothness of the transition are both configurable. There are a few ways to use transitions:
RESTful /transitions
routes
These routes are fully documented in the REST API documentation.
transition
field when issuing commands
When you issue a command to a bulb either via REST or MQTT, you can include a transition
field. The value of this field specifies the duration of the transition, in seconds (non-integer values are supported).
For example, the command:
{"brightness":255,"transition":60}
will transition from whatever the current brightness is to brightness=255
over 60 seconds.
Notes on transitions
- espMH's transitions should work seamlessly with HomeAssistant's transition functionality.
- You can issue commands specifying transitions between many fields at once. For example:
will transition from current values for brightness and kelvin to the specified values -- 255 and 0 respectively -- over 10.5 seconds.{"brightness":255,"kelvin":0,"transition":10.5}
- Color transitions are supported. Under the hood, this is treated as a transition between current values for r, g, and b to the r, g, b values for the specified color. Because milight uses hue-sat colors, this might not behave exactly as you'd expect for all colors.
- You can transition to a given
status
orstate
. For example,
will turn the bulb on, immediately set the brightness to 0, and then transition to brightness=255 over 10 seconds. If you specify a brightness value, the transition will stop there instead of 255.{"status":"ON","transition":10}
Development
This project is developed and built using PlatformIO.
Acknowledgements
- @WoodsterDK added support for LT8900 radios.
- @cmidgley contributed many substantial features to the 1.7 release.
Donating
- [Carsten Schmiemann] (https://www.paypal.com/donate?hosted_button_id=MYRF6P72JW6VC&source=url)
and of course original author of the project and depedencies.