Print all parts. I have printed them all oriented towards z and with organic supports. With 0.4 nozzle, 0.2 layers and 30% filling. Except on the keys and small elements I have isated layer of 0.12

Insert the M4 and M3 nuts with a fine wire soldering iron. There are 4 of M4 on the base to fix the keyboard and another 4 between the structure and the back cover. And finally 4 of M3 on the base to fix the orange pi zero2 card

Assemble all the keys and fix them in the matrix to later solder joining all the negatives. Next, solder a male dunpot wire to each key. When we do the assembly, the terminals will end up in the inputs of the Arduino pro micro

We arrange the components on the printed parts and with the help of a soldering iron and the listed components we connect the devices.

The entries defined in the ino file for the arduino are the following:

const int Pin_ButtonA = 4;
const int Pin_ButtonB = 5;
const int Pin_ButtonX = 6;
const int Pin_ButtonY = 7;

const int Pin_ButtonLB = 8;
const int Pin_ButtonRB = 9;

const int Pin_ButtonBack  = 14;
const int Pin_ButtonStart = 10;

const int Pin_ButtonL3 = 2;
const int Pin_ButtonR3 = 3;

const int Pin_ButtonL2 = 21;
const int Pin_ButtonR2 = 20;

// Directional Pad Pins
const int Pin_DpadUp    = 15;
const int Pin_DpadDown  = 16;
const int Pin_DpadLeft  = 18;
const int Pin_DpadRight = 19;

Library xinput

We only have to finish the assembly, screwing all the elements. To fix the upper part that contains the screen and the base I used extra strong glue. I have also used it to fix the speakers and their respective grills. And finally the head of the volume thread.

Finally we have to record the image based on batocera. Whose compilation and control mapping comes from the wonderful BOB multi-system image. I have change the images and music related to spectrum look

Spectrum image

BOB Best of Best games

Original Batocera system