Ikea Tradfri bulbs brightness issue

Emre · June 11, 2020, 9:04pm

I successfully added 2 Ikea Tradfri bulbs to hub by 6 times on/off magic… (Without using Ikea hub)

But after adding them to Smartthings, their physical brightness lowers. In the app it is 100% but actually they are not.
They were much brighter when I first turned them on before adding them to hub.

To try, I uninstalled them and turned them on manually - they are bright. Add them to hub, a lot less bright…

Anyone has any idea?

sidjohn1 · June 11, 2020, 9:29pm

What DTH are you using?

Emre · June 11, 2020, 9:53pm

Sorry, but what is DTH?

saosinx88 · June 11, 2020, 10:04pm

DTH is the Device Type Handler. When you login to IDE at https://account.smartthings.com/ go to the Devices page, then select one of your Ikea bulbs and see what it says under “Type”.

Emre · June 11, 2020, 10:21pm

Type -> ZLL RGB Bulb

GSzabados · June 11, 2020, 10:22pm

Are you saying, if you turn the bulbs physically off at the wall switch and back on, their brightness is different from when you change brightness in the app down and back up to 100%?

Physically switching puts them back to default.

Emre · June 11, 2020, 10:32pm

No, if I delete the bulb from smartthings hub and use it like a “not smart bulb”, it is bright.

When I smartize the bulb and add it to the hub, then it is not as bright as before. - Even it seems 100% bright in the app

sidjohn1 · June 12, 2020, 2:31am

The public code for that DTH is on github:

github.com

SmartThingsCommunity/SmartThingsPublic/blob/master/devicetypes/smartthings/zll-rgb-bulb.src/zll-rgb-bulb.groovy

/**
 *  Copyright 2017 SmartThings
 *
 *  Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 *  in compliance with the License. You may obtain a copy of the License at:
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed
 *  on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License
 *  for the specific language governing permissions and limitations under the License.
 *
 */
import physicalgraph.zigbee.zcl.DataType

metadata {
	definition (name: "ZLL RGB Bulb", namespace: "smartthings", author: "SmartThings", ocfDeviceType: "oic.d.light", runLocally: true, minHubCoreVersion: '000.025.00000', executeCommandsLocally: true, genericHandler: "ZLL") {

		capability "Actuator"
		capability "Color Control"

This file has been truncated. show original

Near the bottom, it looks like some code to fiquire out the safe color range. Considering there is some rounding involved it is very possible the bulb is dimmer either by design or maybe a rounding error or firmware bug when attached to Smartthings.

You can try this DTH to see if the bulb performs as expected

github.com

puzzle-star/SmartThings-IKEA-Tradfri-RGB/blob/master/ikea-tradfri-rgb.groovy

/**
 *  Copyright 2017 Pedro Garcia
 *
 *  Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 *  in compliance with the License. You may obtain a copy of the License at:
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed
 *  on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License
 *  for the specific language governing permissions and limitations under the License.
 *
 *  IKEA Trådfri RGB Bulb
 *
 *  Color management is not trivial. IKEA bulbs are using CIE XY color scheme instead of Hue/Saturation. Also the 
 *  bulbs do not seem to be able to output "light cyan" color. Maybe it is my fault for not having being able to
 *  identify the correct color scheme (currently assuming sRGB with gamma correction), but cannot either with the 
 *  IKEA remote pairing...
 * 
 *  This handler is written so that it reports any change in the bulb state (on/off, brightness, color) as an event

This file has been truncated. show original

This should get you rocking

SmartApp / DeviceType :"From Code" and "From Template" FAQ

I’m loving the new “From Code” and “From Template” options when creating a new SmartApp / DeviceType. Users don’t have to be instructed to fill out bogus information and then replace the resulting code with code anymore. The new instructions are: Login at http://graph.api.smartthings.com Go to “My SmartApps” or “My DeviceTypes” and click on the “+ New SmartApp” or " + New SmartDevice" button on the right. On the “New SmartApp” or “New SmartDevice” page, Select the Tab “From Code” , Copy the xxxxx source code from GitHub and paste it into the IDE editor window. Click the “Create” button at the bottom. Click the blue “Save” button above the editor window. Click the “Publish” button next to it and select “For Me”. You have now self-published your SmartApp or SmartDevice. Open SmartThing…

GSzabados · June 12, 2020, 8:13pm

@Emre, does it change color as well? To something more warmer?

Glossmarthomenoob · May 21, 2021, 1:07pm

Hi @sidjohn1

I’m using the code you posted from Pedro Garcia,
I’ve got an issue whereby I’ve got a scene that turns on and sets the brightness of a Ikea bulb.

The issue is that I think the animation of the brightness (when powering on) is negating the brightness set in the scene.

Setting the brightness manually and/or in (webCoRe) pistons works absolutely fine - it’s only happening when both brightness and ‘on’ are set at the same time.

I guess as a work-around, I could use a piston to set all the bulbs instead of scenes, that way I can simply issue the ‘brightness’ setting only, which will result in the light turning on anyway.
Currently I think what happens is that the ‘scene’ turns the bulb on - which starts an animation over x milliseconds to get the bulb to the brightness it was when switched off. the scene is then sending the ‘go to brightness x%’ whilst that animation is still running, and therefore has no affect.

I’m not sure it’s possible to alter the DH to either:

allow the brightness command to interrupt the switch on animation;
or the ‘switch on’ operation to wait a split second to see if a brightness command is also sent.
If either could be added it will fix this.

Also, if ST altered the scenes to only issue the brightness command without also issuing an ‘on’ command that would fix this too, but I don’t expect that will happen.

Anyway, I’m not sure there is a fix here - but in case others have the same issue, I thought it was worth mentioning my work-around.

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Ikea Tradfri bulbs brightness issue

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