Thanks Element 14 for selecting my design as a competitor. I received the package on Monday and was thrilled.
I have thrown around some ideas for PiFace Digital 2 and will include some extra components from my workbench.
So at this point (warning : this may change ) my plan is to use the PiFace digital 2 and Enocean Pi to trigger the Pi Processing script to run with a event . The event may be a door is opened , a button is pushed and the magic is displayed on a HDMI monitor or a display on the Raspberry Pi.
My next blog will be installing the Processing Pi image on the new Raspberry Pi 3+ and upgraded camera and running some examples. And yes my cat decided to jump to my desk and push the Contact Sensor off my desk and the solar panel came off 
. Seems to be be working now with a elastic band A most technical solution.