Arcade Cabinet for Tablets

The goal of this project is to provide arcade-style cabinet for 11-inch tablets.

Hardware

10 mm plywood or MDF
1 Joystick
8 (or less) Arcade buttons
1 power switch
1 Arduino Leonardo (better since it can emulate a keyboard or a mouse (HID))
1 Bluetooth module for Arduino
2 4-ohms speakers (recycled or not).
1 Audio amplifier or 5v Audio Amplifier
1 Android tablet

Extra

Humidity and Temperature Sensor - RHT03

Design

Figures for laser cutters (PDF and ODG formats) Media:ArcadeCabinetTablet.zip
Electronic Schema (Fritzing)

Software

Arduino sketch


const int NBANABUT = 4;
const int aButton[NBANABUT] = {A2, A3, A4, A5};
//const int aChar[NBANABUT] = {'1', '2', '3', '4' };
const int aChar[NBANABUT] = {KEY_UP_ARROW, KEY_RIGHT_ARROW, KEY_DOWN_ARROW, KEY_LEFT_ARROW};
int aFlag[NBANABUT] = {false, false, false, false };

const int NBDIGBUT = 8;
const int dButton[8] = {2, 3, 4, 5, 6, 7, 8, 9};
//const int dChar[8] = {'A', 'B', 'C', 'D', 'E','F','G','H' };
const int dChar[8] = {KEY_RETURN, 'B', 'C', 'D', 'E','F','G','H' };
int dFlag[8] = {false, false, false, false, false, false, false, false };
                                                                                             
void setup() {
  for(int d=0;d<NBDIGBUT;d++) pinMode(dButton[d], INPUT_PULLUP);
  Keyboard.begin();
}

void loop() {
  
  for(int d=0;d<NBDIGBUT;d++) {
    if (!dFlag[d] && digitalRead(dButton[d]) == HIGH) {
      Keyboard.press(dChar[d]);
      dFlag[d]=true;
    } else
    if (dFlag[d] && digitalRead(dButton[d]) == LOW) {
      Keyboard.press(dChar[d]);
      dFlag[d]=false;
    }
  }
  for(int a=0;a<NBANABUT;a++) {
    if (!aFlag[a] && analogRead(aButton[a]) > 1024/2) {
      aFlag[a]=true;
      Keyboard.release(aChar[a]);
    } else
    if (aFlag[a] && analogRead(aButton[a]) < 1024/2) {
      Keyboard.press(aChar[a]);
      aFlag[a]=false;
    }
  }
}