Tinker and Twist's Arduino Kyoto Coffee Brewer
Channel: The Makers Workshop
Date: 2015-05-14

I visited the Ada Technical Bookstore in Seattle WA, and they have two beautiful Kytoto-style cold coffee brewers.  They built and open sourced an Arduino powered solenoid driver to precisely control the drops.   The design and code is open sourced on GitHub at : https://github.com/adasbooks/kyoto.     

So, we went ahead and built one for our own cafe!