My Barduino (shameless self promotion).

Ruby + Arduino = Drink dispensing Barmonkey driven by a Ruby DSL that cost me like $50 to build.

Example recipe:

drink 'Screwdriver' do

  serve_in 'Highball Glass'

  ingredients do

    2.ounces :vodka

    5.ounces :orange_juice

  end

end

Code, video, photos: http://www.matthewdavidwilliams.com/2008/10/17/introducing-b...