The in-wall touchscreen is a fairly easy setup, using an Raspberry pi 3+ with POE+ shield.

A hole was created in the wall during room renovations. This hole was measured to be the size of an 7 inch raspberry pi touchscreen, which is held in place using 2 strong neodymium magnets. Power is provided over POE+ from a Ubiquiti POE switch.

The front-end software is created using Python3-kivy, which supports GPU acceleration on the raspberry pi platform. The fronted on this Raspberry-pi sends all API requests over the local network, to another raspberry-pi that's used as XnorDuino gateway with XnorDuino Master connected to it.