ws2801 gem

Controlling LED Stripes/Pixel with ws2801 chips from Ruby on Raspberry PI or similar

Reference

Used Pixels 12mm Diffused Digital RGB LED Pixels (other products, with same chipset should work fine too)
Connected after the Adafruit Guide
Developed in Ruby 1.9.3
Links for this Gem: Rubygems, Rubydoc, Github

Install directly from Rubygems

gem install ws2801

Set all to green

WS2801.set :g => 255

Set first pixel to blue

WS2801.set :pixel => 0, :b => 255

Fade some pixel to red

WS2801.fade :pixel => [1,4,7,12,18], :r => 255

Set off

WS2801.off

Set first half to bright white

WS2801.set :pixel => (0..(WS2801.length/2)).to_a, :r => 255, :g => 255, :b => 255

Change length (default: 25)

WS2801.length 50