Features:
Original WII U shell
ON/OFF Push button to power up and down + automatic system shutdown when low battery using lipopi script from Daniel Bull
Front blue power on indicator
Low, charging and charged Battery indicator
Micro USB charging port
Headphones Audio jack with automatic speaker disconnection
Front USB port
Volume control
External SD card reader at the bottom
2x analog joystick
1x D pad
14x buttons
What is inside:
RPI3
USB DAC SOUNDCARD
TEENSY 2.0
CHARGING CIRCUIT
POWERBOOST 1000 BASIC
6.5" HDMI DISPLAY
BATTERY 2x PANASONIC 3400mAH
BATTERY PROTECTION CIRCUIT 8A
2x3 W D-class amplifier
Flat FPC HDMI Cable
FPC to DIP adapters for connecting original controls
Technical details:
Running time is about 3 hours tested on N64.
Total current draw from batteries is around 1.7A
( 1.1A LCD + RPI+ ACCESORIES and 0.6A losses on powerboost )
This is a real life performance but might draw even more when RPI is maxed out.
Teensy Update:
For better analog input in N64 games change any instances of 1.8 like in here " rX = (rX - 512) * 1.8 + 512; " to 1.5.
The analog range is going to be shorter hence joystick is not so sensitive. Retropie is still able to register analog on setup screen but unfortunately you will loose analog movement in psx games. Crash bandicoot is not running anymore
Added ESC key for home button to teensy code.
Teensy Update 2:
Home button action modified to switch between Joystick and Keyboard. Now usable in Amiga emulator. Joystick buttons reassigned to match actual wiring.
Code: Select all
const int MODE = 15; // the pin that the pushbutton is attached to
const int LED = 11;
int buttonPushCounter = 0; // counter for the number of button presses
int buttonState = 0; // current state of the button
int lastButtonState = 0;
void setup() {
pinMode(0, INPUT_PULLUP); // 01 Left Shoulder
pinMode(1, INPUT_PULLUP); // 02 Lelf Trigger
pinMode(2, INPUT_PULLUP); // 03 Right
pinMode(3, INPUT_PULLUP); // 04 Left
pinMode(4, INPUT_PULLUP); // 05 Up
pinMode(5, INPUT_PULLUP); // 06 Down
pinMode(6, INPUT_PULLUP); // 07 B
pinMode(7, INPUT_PULLUP); // 08 A
pinMode(8, INPUT_PULLUP); // 09 Right Trigger
pinMode(LED, OUTPUT); // LED
pinMode(12, INPUT_PULLUP); // 13 Start
pinMode(13, INPUT_PULLUP); // 14 Select
pinMode(14, INPUT_PULLUP); // 15 Y
pinMode(MODE, INPUT_PULLUP); // HOME Button
pinMode(18, INPUT_PULLUP); // 19 Left Joystick Button
pinMode(19, INPUT_PULLUP); // 20 Right Joystick Button
pinMode(22, INPUT_PULLUP); // 23 Right Shoulder
pinMode(23, INPUT_PULLUP); // 24 X
// Serial.begin(9600);
}
void loop_joystick() {
if (digitalRead(0) == LOW)
{
Joystick.button(1, 1);
}
else
{
Joystick.button(1, 0);
}
if (digitalRead(1) == LOW)
{
Joystick.button(2, 1);
}
else
{
Joystick.button(2, 0);
}
if (digitalRead(2) == LOW)
{
Joystick.button(3, 1);
}
else
{
Joystick.button(3, 0);
}
if (digitalRead(3) == LOW)
{
Joystick.button(4, 1);
}
else
{
Joystick.button(4, 0);
}
if (digitalRead(4) == LOW)
{
Joystick.button(5, 1);
}
else
{
Joystick.button(5, 0);
}
if (digitalRead(5) == LOW)
{
Joystick.button(6, 1);
}
else
{
Joystick.button(6, 0);
}
if (digitalRead(6) == LOW)
{
Joystick.button(7, 1);
}
else
{
Joystick.button(7, 0);
}
if (digitalRead(7) == LOW)
{
Joystick.button(8, 1);
}
else
{
Joystick.button(8, 0);
}
if (digitalRead(8) == LOW)
{
Joystick.button(9, 1);
}
else
{
Joystick.button(9, 0);
}
if (digitalRead(12) == LOW)
{
Joystick.button(13, 1);
}
else
{
Joystick.button(13, 0);
}
if (digitalRead(13) == LOW)
{
Joystick.button(14, 1);
}
else
{
Joystick.button(14, 0);
}
if (digitalRead(14) == LOW)
{
Joystick.button(15, 1);
}
else
{
Joystick.button(15, 0);
}
if (digitalRead(18) == LOW)
{
Joystick.button(19, 1);
}
else
{
Joystick.button(19, 0);
}
if (digitalRead(19) == LOW)
{
Joystick.button(20, 1);
}
else
{
Joystick.button(20, 0);
}
if (digitalRead(22) == LOW)
{
Joystick.button(23, 1);
}
else
{
Joystick.button(23, 0);
}
if (digitalRead(23) == LOW)
{
Joystick.button(24, 1);
}
else
{
Joystick.button(24, 0);
}
int rX = analogRead(4);
rX = (rX - 512) * 1.5 + 512;
if (rX > 1023)
rX=1023;
if (rX < 0)
rX = 0;
int rY = analogRead(5);
rY = (rY - 512) * 1.5 + 512;
if (rY > 1023)
rY=1023;
if (rY < 0)
rY = 0;
rY=abs(1023-rY);
int rL = analogRead(0);
rL = (rL - 512) * 1.5 + 512;
if (rL > 1023)
rL=1023;
if (rL < 0)
rL = 0;
int rR = analogRead(1);
rR = (rR - 512) * 1.5 + 512;
if (rR > 1023)
rR=1023;
if (rR < 0)
rR = 0;
//rR=abs(1023-rR);
Joystick.X(rX);
Joystick.Y(rY);
Joystick.sliderLeft(rL);
Joystick.sliderRight(rR);
}
void loop_keyboard() {
if (digitalRead(4) == LOW)
{
Keyboard.press(KEY_UP);
}
else
{
Keyboard.release(KEY_UP);
}
if (digitalRead(5) == LOW)
{
Keyboard.press(KEY_DOWN);
}
else
{
Keyboard.release(KEY_DOWN);
}
if (digitalRead(3) == LOW)
{
Keyboard.press(KEY_LEFT);
}
else
{
Keyboard.release(KEY_LEFT);
}
if (digitalRead(2) == LOW)
{
Keyboard.press(KEY_RIGHT);
}
else
{
Keyboard.release(KEY_RIGHT);
}
//buttons
if (digitalRead(0) == LOW)
{
Keyboard.press(KEY_ENTER);
}
else
{
Keyboard.release(KEY_ENTER);
}
if (digitalRead(1) == LOW)
{
Keyboard.press(KEY_ESC);
}
else
{
Keyboard.release(KEY_ESC);
}
if (digitalRead(22) == LOW)
{
Keyboard.press(KEY_LEFT_CTRL);
}
else
{
Keyboard.release(KEY_LEFT_CTRL);
}
if (digitalRead(8) == LOW)
{
Keyboard.press(KEY_LEFT_ALT);
}
else
{
Keyboard.release(KEY_LEFT_ALT);
}
if (digitalRead(7) == LOW)
{
Keyboard.press(KEY_A);
}
else
{
Keyboard.release(KEY_A);
}
if (digitalRead(6) == LOW)
{
Keyboard.press(KEY_B);
}
else
{
Keyboard.release(KEY_B);
}
if (digitalRead(14) == LOW)
{
Keyboard.press(KEY_Y);
}
else
{
Keyboard.release(KEY_Y);
}
if (digitalRead(23) == LOW)
{
Keyboard.press(KEY_X);
}
else
{
Keyboard.release(KEY_X);
}
if (digitalRead(12) == LOW)
{
Keyboard.press(KEY_F12);
}
else
{
Keyboard.release(KEY_F12);
}
if (digitalRead(13) == LOW)
{
Keyboard.press(KEYPAD_5);
}
else
{
Keyboard.release(KEYPAD_5);
}
}
void loop() {
buttonState = digitalRead(MODE);
if (buttonState != lastButtonState) {
if (buttonState == HIGH) {
buttonPushCounter++;
// Serial.println("on");
// Serial.print("number of button pushes: ");
// Serial.println(buttonPushCounter);
}
else {
// Serial.println("off");
}
}
lastButtonState = buttonState;
if (buttonPushCounter % 2 == 0) {
digitalWrite(LED, HIGH);
} else {
digitalWrite(LED, LOW);
}
if (digitalRead(LED) == LOW)
{
loop_joystick();
}
else
{
loop_keyboard();
}
}
Lipo script for power on/off
https://github.com/craic/pi_power
Teensy 2.0 code and wiring
I've got something planned for the wii u controller myself, just need to find the time to do it. 
