The goal of the final project was to install a single-board computer with a display in a handheld housing of a certain size. In addition, the system should have an easily accessible SD card and a rechargeable battery for mobile use.
Since a classic Gameboy case should be used, the external dimensions of 150 x 90 x 35 mm were fix. This affected the selection of the other components. After a few researches the Raspberry Pi Zero was used as a single-board computer, as it fits perfectly to the requirements – concerning the dimensions as well as the technical data. As a power supply a classical smartphone battery is used. Its voltage is converted from 3.8 to 5 volts using a Li-Ion battery converter, a so-called PowerBoost Charger. As a result, an on/off button and the possibility of charging the battery via micro-USB cable could also be realized.
The main question was: Does all of this really fit into a little Gameboy? The answer is: Yes it does. To store all components, the housing just had to be modified a bit. The display has been extended, the battery shaft removed and additional holes for the control were inserted. The control is, by the way, done via a specially designed control board, a so-called "all-in-one-button PCB" board, which is connected to a classic USB control board. In order to allow an easy change of the SD card, a service flap was installed.
So that’s the point where Erwin had all the important hardware together. But that was not enough: Of course, the software had also to be selected. Our trainee chose an adapted Linux called EmulationStation as operating system. This software allows configuring the different keys with the particular control commands. Now the installation only had to be completed and this very special Mini-PC was finally finished. Using so-called emulators (= programs, that simulate a system to make software compatible), it can now be played with popular retro-games.
There is no question that we want to preserve so much competence and motivation. We are therefore very pleased that Erwin Seliverstov will continue working for us after completing his apprenticeship as an IT systems technician. From August 1, 2017, he will support us with his skills in the areas of service and product management.