WS2811 Digital RGB LED
 Product Details
 Power Considerations
Searches for WS2811 find references to both "5v" and "12v". This is explained in the spec sheet for the WS2811. In the 5v usage, the WS2811 is driving a single LED on each output pin. (This is the configuration in the strips.) In the 12v usage, the WS2811 is driving three LEDs on each output pin. The interesting point is that this is not a 5v supply in the 12v configuration; instead a dropping resistor is used between the 12v supply and the WS2811. "best practices" for driver circuit.
 Ordering information and Related Products
http://www.aliexpress.com/item/WS2811IC-Digital-RGB-led-strip-5m-input-12V-300pcs-IC-300pcs-SMD5050-led-IP65-waterproof-free/672648273.html http://www.aliexpress.com/item/Bare-board-Nonwaterproof-4M-DC5V-Pixel-RGB-dream-color-led-strip-WS2811IC-240pcs-IC-240pcs-SMD5050/682624810.html (This is a bare "strip", suitable for cutting into shorter lengths) http://www.aliexpress.com/store/product/12V-Remote-Controller-for-WS2811-IC-RGB-magic-color-LED-Strip-built-in-132-kinds-of/505193_666406933.html
Also, note that the store (http://www.aliexpress.com/store/505193) sells these strips in two different "densities": 60 LEDs/meter and 30 LEDs/meter. The strips above are 60 LEDs/meter. Do not judge by the picture, since the site uses the same pictures for both densities. It is best to read the description to confirm.
 Individual LEDs
 Commercial Controllers
 Articles and Webpages
 Light Sequencing
David Whiteis's howto on getting it working with an Arduino: http://wiki.hacdc.org/index.php/WS2811_Arduino_Howto
Gist with Arduino server and Python client to control LED strip: https://gist.github.com/internetjanitor/5469052
 Raspberry Pi
 Microchip PIC
https://www.insomnialighting.com/products/rgbsmdws2811.html: A single WS2811 SMD5050 LED working with a PIC, plus sample C code. https://groups.google.com/forum/?fromgroups=#!msg/hacman/aYPHP47wcLQ/QOIvINhSvPIJ: A discussion regarding the WS2811 and getting it work with PIC.
 Further Discussion
 January 2013 group purchase
 People involved
ITG, Hax, David Whiteis, Tim, Eric, Dan, David K
 Meeting on January 19, 2013
Purpose: Test LED spools and controllers I'd like to meet at the space Saturday to test all the LEDs and play with the controllers we bought. I am bringing 2 x 5v 20amp power supplies that I ordered, or we can use one of the bench supplies with 5v.
- The controllers we bought were busted. The Arduino works great, no need for a cheaply manufactured controller.
- After daisy-chaining 5 strands (1200 LEDs) together there was a noticeable flicker but not terrible. We can compensate for this by using a more advanced microcontroller like the Propeller or Teensy 3.0.