Materials & Methods

The modifications in this chapter are based on an existing espresso machine. To control the machine, new electronics will be developed, more sensors will be mounted and existing wiring will be replaced. Upon the hardware modification the Bern RTOS based firmware can be developed containing improved temperature control.

The modifications are open source. The electronics source files and schematic, PCB, bill of materials export and CAD model are available at [12]. The espresso machine modifications are based on the CAD model from [23].