Devices which make coffee and othersuch caffeinated drinks. It's “difficult” to determine what pairings are common for these, but a general assumption of “Linux+ARM” is almost certainly applicable here, as with many other “smart” appliances and home devices.
The easiest way is to hack the existing frontpanel via overriding its pushbuttons
A similar device to this one was “hacked”, in order to function over the internet to HTTP requests. Maybe something more could come of this?
Run it on a Spark Photon
Although this isn’t an operating system, it may be an EOP vector, as this thing has an electronic-based interface available.
https://github.com/Q42/coffeehack
An external board connected to Coffee Machine
This is not for this exact model, but it is for others of the same brand. May work on this.