Today PJRC is releasing an adaptor board for large LED projects using the OctoWS2811 library.
http://www.pjrc.com/store/octo28_adaptor.html
If you've followed this forum, you've probably seen many LED projects that had terrible flickering troubles. This board tries to address those problems with the 5V buffer and resistors matched to CAT6 cable. It also encourages a wiring style, where signal grounds run twisted with each signal, and they meet power grounds at the LEDs, which gives the best possible signal quality and avoids the common grounding troubles that cause difficult flickering.
http://www.pjrc.com/store/octo28_adaptor.html
If you've followed this forum, you've probably seen many LED projects that had terrible flickering troubles. This board tries to address those problems with the 5V buffer and resistors matched to CAT6 cable. It also encourages a wiring style, where signal grounds run twisted with each signal, and they meet power grounds at the LEDs, which gives the best possible signal quality and avoids the common grounding troubles that cause difficult flickering.