To "produce" or assemble one of these units, you typically need several specialized parts often found at retailers like Adafruit : : Uses a Raspberry Pi 2 or 3 for processing. Display : A 2.8" PiTFT capacitive or resistive touchscreen. Audio : A small speaker and a class D audio amplifier.
: A custom gamepad PCB with tactile buttons and a silicone keypad. Pakingrl2zip
: Install RetroPie on a microSD card to act as the operating system for gaming. To "produce" or assemble one of these units,
: Download the STL files (usually from Thingiverse ) and print the front and back shells. Pakingrl2zip
: You will need to solder the buttons to the custom PCB and connect the screen and power board to the Raspberry Pi.