Hello!
Recently I hacked my coffeemaker (a Jura Impressa S95) and I can fully control the machine with Arduino. I aleady made an Arduino-based RFID payment system and a voice-ordering-app just for fun.
If you would like to see the project videos, here they are:
Feel free to give me a feedback! Would you like to start your own coffeemaker project? Don't hesitate to ask me! 