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cflurin avatar cflurin commented on August 29, 2024

HomeKit doesn't support RGB. However you can define a Lightbulb with the optional characteristics:

{
    "name":"office_lamp",
    "service":"Lightbulb", 
    "Brightness": "default",
    "Hue": "default",
    "Saturation": "default"
};

You'll get 3 mqtt messages:

{ "name": "office_lamp", "characteristic": "Hue", "value": 157 }
{ "name": "office_lamp", "characteristic": "Saturation", "value": 36 }
{ "name": "office_lamp", "characteristic": "Brightness", "value": 28 }

These values can be used to convert HSV to RGB.

In https://github.com/cflurin/homebridge-mqtt/blob/master/lib/utils.js

you'll find the functions hsv2rgb and rgb2hsv. Just copy the code in your app.

from homebridge-mqtt.

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