This is a modified version of Adafruits WS2801 library.  It is  function compatable with my LED_LPD8806 library (modified from the Adafruit_LDP8806) so the two can be used interchangable with sketches.    

12mm Bullet shape ----> https://www.adafruit.com/products/322
Red - 5V
Yellow - Data
Green - Clock
Blue - Ground

12mm Flat shape   ----> https://www.adafruit.com/products/738


36mm Square shape ----> https://www.adafruit.com/products/683


LED Strip ----> http://www.sparkfun.com/products/10312
Blue - 5V
Red - Data
Green - Clock
Black - Ground





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Example library for driving Adafruit WS2801 pixels!


  Designed specifically to work with the Adafruit RGB Pixels!
  12mm Bullet shape ----> https://www.adafruit.com/products/322
  12mm Flat shape   ----> https://www.adafruit.com/products/738
  36mm Square shape ----> https://www.adafruit.com/products/683

  These pixels use SPI to transmit the color data, and have built in
  high speed PWM drivers for 24 bit color per pixel
  2 pins are required to interface

  Adafruit invests time and resources providing this open source code, 
  please support Adafruit and open-source hardware by purchasing 
  products from Adafruit!

  Written by Limor Fried/Ladyada for Adafruit Industries.  
  BSD license, all text above must be included in any redistribution

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To download. click the DOWNLOADS button in the top right corner, rename the uncompressed folder Adafruit_WS2801. Check that the WS2801 folder contains Adafruit_WS2801.cpp and Adafruit_WS2801.h

Place the Adafruit_WS2801 library folder your <arduinosketchfolder>/libraries/ folder. You may need to create the libraries subfolder if its your first library. Restart the IDE.