Configuring my first Tasmota Light

Configuration
,
1

I successfully flashed my first LED-Controller with Tasmota… Jippie…
It’s also already working in HA. Awesome…

My config currently looks like this: (found that somewhere and copied it)

light:
  - platform: mqtt
    name: "Magic Home LED"
    command_topic: "cmnd/sonoff/POWER"
    state_topic: "tele/sonoff/STATE"
    state_value_template: "{{value_json.POWER}}"
    availability_topic: "tele/sonoff/LWT"
    brightness_command_topic: "cmnd/sonoff/Dimmer"
    brightness_state_topic: "tele/sonoff/STATE"
    brightness_scale: 100
    on_command_type: "brightness"
    brightness_value_template: "{{value_json.Dimmer}}"
    rgb_command_topic: "cmnd/sonoff/Color2"
    rgb_state_topic: "tele/sonoff/STATE"
    rgb_value_template: "{{value_json.Color.split(',')[0:3]|join(',')}}"
    payload_on: "ON"
    payload_off: "OFF"
    payload_available: "Online"
    payload_not_available: "Offline"
    qos: 1
    retain: false

Now I have some problems with it.

First:
When I change the color of the light using the tasmota command-line, it’s not reflected in HA. Is that normal? Shouldn’t it change in HA as well?
I guess this is some kind of mqtt problem?

Second:
When I set a color using the Home Assistant UI I get 100% brightness. When I then change the brightness using the slider to let’s say 50% this works. The LEDs are dimmed down. But when I then change the color again, the brightness is again at 100% but the slider in HA still is at 50%.
Most likely a similar problem to question one?

Third:
It is a RGBW led controller but currently I am only using the rgb part. Not the w.
Can anybody tell me how to add the white part? I haven’t found anything working yet. Rgbw lights with tasmota and MQTT looked pretty good to me (from the comment) but with the rgb_value_template and rgb_command_template from that post it’s not working any more at all :frowning: But I guess the attempt to split out the white part of the rgb seems good?!?