Thanks - I will have a look - Just looking at using them for some picture frames that ideally we would like to run individual led effects on, so not using masses of pixel tape per window but a few.
Desk wise its a pearl expert pro, not the newest of desks but still able to output a fair few universes. Never done Arduino before so not sure if that's out of my league - was just really looking for a unit that I could plug the tape into, then into the desk and use the pixel mapping or shape generator etc. to run the effects.
Probably should have said the tape is 2811 so maybe one of those units is what I'm looking for alistermorton. Probably the first one so I can link them to another unit etc if the universes allow it. I can do a basic version with the standard RGBW tape and use 4 individual strips to lights each side of the window but thought it would look cooler if I was able to use individual ones.