Control 2-colour DMX LED strip

[Radek Dohnal]

Do you have any idea, how to control (via. visualisation) intensity and temperature of warm/cold white LED strip (https://www.velleman.eu/products/view/?id=412624)?

In LoxConfig, there is no special function for this, and mix intensity of both colour manual is not so comfortable.

I have 4CH DMX dimmer, so this LED strip is connected on CH1 and CH2.

[Robbie]

Having become aware of the advantages of controlling lighting colour temperature myself, I can see dual warm/cold LED strip being very useful.

At present, Loxone have (in Lighting controller V2) gone the route of Warm White + Red to reduce colour temperature and Warm White + Green & Blue to increase colour temperature. Thereby needing 4 channels, plus a reduced CRI at the extremes.

Hopefully Loxone will see the advantages of dual colour warm/cold LED mixing where "effect" colours aren't needed (or wanted). Have you put this to them as a suggestion? They do appear to (eventually) listen to suggestions.

[Joakim Arfvidsson]

I did this by making a separate virtual input for the color temperature, and then using a single output from the lighting controller to control the brightness. You can potentially have several outputs that use different mixtures if you want, but I found that I just tuned the virtual color temperature input once and left it (at 5000K for my kitchen counter strip).

[Robbie]

I find it useful to be able to have different colour temperatures, rather than only one. But as they are generally activity / time-of-day dependant, each could be fixed to a scene. i.e. (within my kitchen/dinner);

• 5000K for cooking during the day 
• 3000K for eating in the evening 
• 2200K for a cosy relaxing atmosphere late at night

It's also worth avoiding having lights with different colour temperatures within a room, as it can look messy. Therefore when I have my shadow gap LED strip set to around 5000K during the day, the scene doesn't include any other lights (as they are all 3000K or less). When I have other lights on in the evening, the shadow gap LED strip is a matching 3000K.