Light Control

[Paul_B]

Happy Easter one and all,

Has anyone played with Cortex to control light levels and scenes? I'm looking at a RGB LED to act as a spotlight on a piece of artwork. I know that RGB LEDs can be controlled via DMX but not sure if Cortex offers be any solutions?

Paul

[toscal]

If idratek has a 0 -10V module then there are 0 - 10V RGB dimmers available. You need one 0 - 10Vmodule per colour. We are currently testing a 0 - 10v RGB dimmer module for a project we are working on.
There are IR controllable RGB modules so if you can learn the codes then you could do it that way.

[Karam]

The QAO module provides 4x 0-10V channels so I suppose one module for one RGB light or perhaps 3 modules for 4 lights. In Cortex the analogue outputs can be connected to dimmer type objects such that the same automated features can be acheived as per direct physical dimmers, but there isn't any specialised support for RGB colour so desired colour effects will probably be instigated using macros

[toscal]

The RGB dimmers we use are capable of 5A per channel or colour.
That means about 25m of RGB flexistrip.

[Paul_B]

This is the unit I was thinking of buying and it suggest it needs a 12V (330mA) supply. The same site has a range of DMX controllers and some have a RF control

http://www.ultraleds.co.uk/downlight-complete-unit-p-2134.html

[toscal]

What I would want to know which isn't on the website is what the lumen output is.
Since it looks like it has one each of red, blue and green LEDs I would also like to know what the colour beam is like as you may get a nice white circle in the middle, (if you have all three LEDs on) but towards the edges you may get red, blue and green circles.

[chris_j_hunter]

more options here, maybe :

http://www.display-lighting.co.uk/shopdisplayproducts.asp?id=94&cat=LED+Spotlights

lots of links & seem to offer a good range of options ...

(not tried them yet, but hoping to order some soon)

[toscal]

Once again another company that doesn't publish the lumen values of its products. This to me is the most important thing, as it helps to make a good comparison to a normal bulb.