Ledvance RGBW bulbs do not expose service for setting white color temperature (probably HueColorTemperature)

BoschSmartHome / bosch-shc-api-docs

Bosch Smart Home Controller Local REST API

Other

208 stars 44 forks source link

Ledvance RGBW bulbs do not expose service for setting white color temperature (probably HueColorTemperature) #50

Closed zimjjan closed 3 years ago

zimjjan commented 3 years ago

The Ledvance RGBW Bulbs do not expose the HueColorTemperature service via the API so correct setting of white hue (or color temp) is not possible via API, although it is possible via app.

Using the HSBColorActuator service does not work either as it only "mixes" white temps via RGB LEDs.

{
        "@type": "device",
        "rootDeviceId": "xxx",
        "id": "xxx",
        "deviceServiceIds": [
            "CommunicationQuality",
            "HSBColorActuator",
            "MultiLevelSwitch",
            "BinarySwitch"
        ],
        "manufacturer": "LEDVANCE",
        "roomId": "hz_5",
        "deviceModel": "LEDVANCE_LIGHT",
        "serial": "xxx",
        "profile": "GENERIC",
        "iconId": "icon_philips_roomlightcontrol",
        "name": "Stehlampe mitte",
        "status": "AVAILABLE",
        "childDeviceIds": []
    }

sebastianharder commented 3 years ago

Hi @JanZimmer,

colored lamps do not expose the HueColorTemperature device service on purpose and this is also not planned for the future.

Although the Bosch apps allow to change the color temperature of colored lamps, they also use the HSBColorActuator device service for this.

zimjjan commented 3 years ago

@sebastianharder all right. Could you maybe go into detail on how conversion should take place so I get my Ledvance bulbs to use the white LEDs even though I use HSBColorActuator? I wasn't able to do so, yet.

hxmelab commented 3 years ago

Hi Jan,

just use the device service HueColorTemperature, e.g.:

@type: "DeviceServiceData" id: "HueColorTemperature" deviceId: "hdm:ZigBee:f0d1b8000013d2b0" @type: "colorTemperatureState" colorTemperature: 316 colorTemperatureRange: object minCt: 153 maxCt: 370

With e.g. Postman you could get all available device service of this device.

Hope that helps!

zimjjan commented 3 years ago

@hxmelab this is the whole point of this issue, as for RGBW Ledvance bulbd, this service is not exposed.

hxmelab commented 3 years ago

Ok, now I see the problem. Sorry...

zimjjan commented 3 years ago

So to make things worse, I just recognized, that even if I use the app to control the white temperature, the bulbs start to switch between using RGB and White LEDs for different shades of white (which also ends up in different brightness levels).

Is there a magic Lookup table for these bulbs to consistently control the white temperature?

zimjjan commented 3 years ago

Ledvance definitely support the service, btw:

https://dammedia.ledvance.info/media/resource/hires/asset-7856052/Declaration-of-Conformity-Smart-Home.pdf https://zigbeealliance.org/zigbee_products/par16-rgbw-value/

sebastianharder commented 3 years ago

@JanZimmer we are currently checking how we can support here.

zimjjan commented 3 years ago

Thanks. I contacted the Ledvance guys, as well. They told me, that despite of what is actually advertised, the bulbs are not capable of "true" white tone/hue/temp mixing with actual white LEDs but will also always use the RGB LEDs. Hence there might be no way of providing the Temp related services.

For me this is a impractical solution far away from what other competitors deliver for roughly the same price. As there is no openly available Backlog for the App, the bigger problem (besides the API related) is the far too basic control mechanisms for lamps in the App (no grouping, no Alexa support besides scenes - really?, cluttered UI for color selection).