Controlling Larger Lamps with vvvv

I would recommend using DMX512 for controlling lights. It is an accepted standard, and tends to make things plug&play and reusable. Soldering your own 230V equipment is dangerous and should be left to expert. Most music stores do have stage lighting equipment and will have DMX512 dimmers available. for examplehttp://www.musik-produktiv.de do have a range of products andhttp://www.lightpower.de will have devices for almost any professional application.

MIDI dimmers might be also an option, but the range of product is more limited. For switching very small lampshttp://www.doepfer.de has some solutions. See the HowTo Relays for details.

Controlling LEDs with vvvv

See the HowTo Relays for details how to connect general purpose interfaces to vvvv. Here are some links specific to LEDs.

controlling over DVI or VGA

this is the most poverful interface available on pcs and has the best support with vvvv.
These modules quite nicely over the much faster vga or dvi output..http://www.elementlabs.com/prod/versatube.htmhttp://www.elementlabs.com/prod/versatile_spec.htmhttp://www.barco.com/projection_systems/do...te_3_maa04+.pdfhttp://www.barco.com/projection_systems/do...edia_jan04+.pdf

perhaps you can avoid the leds at all by using a very wonderful low tech trick from fabian thiele athttp://www.imedia-tv.de

controlling over DMX

kalle realized a 3Dmatrix with 507 individually controlled (even dimmed, not switched) LEDs in wattens/austria for kristallwelten. And an even more exciting 3D LEDmatrix for the cocoon club.
For this reason the wonderful wolfgang schemmert fromhttp://www.cinetix.de developed a small printed circuit board for my purposes, which allows to control 24 LEDs individually via DMX. perhaps he will solder you some of them. price might be somewhere around 120 Euro each. but i don´t know if he wants to sell this at all.
Other products to control lots of LEDs individually in a good price/efficiency relationship are not known to me.

Soldering your own interface

Tom Peak? found two small projects that might explain the basics.http://www1.fh-aalen.de/dti/Ti_proj/Lukas/HDLukas.htmlhttp://www.acm.uiuc.edu/sigarch/tutorials/ledarray

Perusing LED-Tickers

Peruse ready made led-laufschriften and control them via RS232http://www.led-laufschriften.de/lueinz/einzeilige.htm