Step by Step RGBW LED with open hab2

Setup, Configuration and Use Beginners
1

Hello, I have an LED-Stripe with osram oti dali 75.
So 4 channels R-G-B-WW over KNX.
At the Moment 4x Slider-Items,
How can i controll this with an colorpicker in openhab2. ?

i found some rules
like this:

rule "LEDColorChanging"
when Item LEDstripe changed
then
logInfo(“LED”, “Color changing”)

hsbValue = LEDstripe.state as HSBType
redValue   = String.format("%02X", (hsbValue.red.floatValue * 2.55) as int)
greenValue = String.format("%02X", (hsbValue.green.floatValue * 2.55) as int)
blueValue  = String.format("%02X", (hsbValue.blue.floatValue * 2.55) as int)

sendCommand(Text_Text, redValue + greenValue + blueValue)
logInfo("LED Color changed", "R" + redValue + "G" + greenValue + "B" + blueValue)

end

but i can`t adopt this.
Here I’m a beginner. What do i have to declare?
Thanks

2

Sorry to bump an old post again, but this is the best and most recent thread on the topic.

I’ve been spliting hsbValue to RGB components with openHAB2 for a while, but now I’ve moved on to RGBW strips with openHAB V3.

Does anyone know if there has been any change with the hsbValue to now offer hsbValue.white.intValue ?

FYI

This rule works in OH3 (I need to tidy up the ON & OFF part using an else section, to accommodate commands from Alexa & Google etc)

		rule "Middle colour"
		when
			Item MidRoomColourVR received command
		then
	
		 
		logInfo("Middle","Middle Colour  ="+receivedCommand.toString)

		if (receivedCommand.toString == "ON")	 {MidRoomColourVR.sendCommand("0,0,100")}
		if (receivedCommand.toString == "OFF")	 {MidRoomColourVR.sendCommand("0,0,0")}

		var HSBType hsbValue = receivedCommand as HSBType

		var int redValue = hsbValue.red.intValue
		var int greenValue = hsbValue.green.intValue
		var int blueValue = hsbValue.blue.intValue
		
		logInfo("Middle","Middle HSB Value ="+hsbValue+" RGB Values : Red ="+redValue+" : Green ="+greenValue+" : Blue ="+blueValue)
		
		
		MidRoom4DCCH1.sendCommand(redValue)
		MidRoom4DCCH2.sendCommand(greenValue)
		MidRoom4DCCH3.sendCommand(blueValue)

		end