[SOLVED] Set Color via Node-Red

How to set HSB Color via an openhab2-out node in Node-Red?

I tried an object as i get with the -in node, i tried an array, i tried an string (“125, 125, 100”)- all i get is a http 400 error.
If i only set a numeric value the LED’s are dimmed as expected. OFF/ON works to.

Side question - which of the various node-red-contrib plugins for openhab2.5 should be used?



I think you’re on the right lines.

All I do is to create a UI panel with a Colorpicker and a dummy, assigned to the same Colour Item.

Then I simply copy whatever the Dummy widget shows into the NodeRed payload.

For example

This value would be


Without any quotes, assigned as a String

As for node version, I tend to use this one.
I believe it has a few more options, like an generic Events node, which I use to capture Trigger Channels in a Function node.

1 Like

Thanks - got it working now.

1 Like

This example is very useful, but I can not write the good Javascript code to send the RGB msg.payload
You say without any quotes, assigned as a String…
I always receive “Error 400: Bad Request”

On openHAB2 Log Viewer the message is
==> /var/log/openhab2/openhab.log <==

2021-02-23 08:48:38.164 [WARN ] [rest.core.internal.item.ItemResource] - Received HTTP POST request at ‘items/Bureau_Gest_Lum_Color’ with an invalid status value ‘170,85,130’.

Can you help me with an example^