Conectar um teclado USB ao Arduino usando a Biblioteca PS2Keyboard (http://www.pjrc.com/teensy/td_libs_PS2Keyboard.html)

Video Youtube: https://www.youtube.com/watch?v=xOinlGYvylU

Ligar o D- ao pino 2 do Arduino (DataPin)

Ligar o D+ ao pino 3 do Arduino (IRQPin)

Download Biblioteca: http://www.pjrc.com/teensy/td_libs_PS2Keyboard.html

Codigo de teste abaixo:

/*  PS2Keyboard library example
 
 PS2Keyboard now requries both pins specified for begin()
 
 keyboard.begin(data_pin, irq_pin);
 
 Valid irq pins:
 Arduino Uno:  2, 3
 Arduino Due:  All pins, except 13 (LED)
 Arduino Mega: 2, 3, 18, 19, 20, 21
 Teensy 2.0:   All pins, except 13 (LED)
 Teensy 2.0:   5, 6, 7, 8
 Teensy 1.0:   0, 1, 2, 3, 4, 6, 7, 16
 Teensy++ 2.0: 0, 1, 2, 3, 18, 19, 36, 37
 Teensy++ 1.0: 0, 1, 2, 3, 18, 19, 36, 37
 Sanguino:     2, 10, 11
 
 for more information you can read the original wiki in arduino.cc
 at http://www.arduino.cc/playground/Main/PS2Keyboard
 or http://www.pjrc.com/teensy/td_libs_PS2Keyboard.html
 
 Like the Original library and example this is under LGPL license.
 
 Modified by Cuninganreset@gmail.com on 2010-03-22
 Modified by Paul Stoffregen <paul@pjrc.com> June 2010
 */

#include span style="color: #cc6600;">PS2Keyboard.h>

const int DataPin = 2;
const int IRQpin = 3;

PS2Keyboard keyboard;

void setup() {
  delay(1000);
  keyboard.begin(DataPin, IRQpin);
  Serial.begin(9600);
  Serial.println("Keyboard Test:");
}

void loop() {
  if (keyboard.available()) {

// read the next key
    char c = keyboard.read();

// check for some of the special keys
    if (c == PS2_ENTER) {
      Serial.println();
    }
    else if (c == PS2_TAB) {
      Serial.print("[Tab]");
    }
    else if (c == PS2_ESC) {
      Serial.print("[ESC]");
    }
    else if (c == PS2_PAGEDOWN) {
      Serial.print("[PgDn]");
    }
    else if (c == PS2_PAGEUP) {
      Serial.print("[PgUp]");
    }
    else if (c == PS2_LEFTARROW) {
      Serial.print("[Left]");
    }
    else if (c == PS2_RIGHTARROW) {
      Serial.print("[Right]");
    }
    else if (c == PS2_UPARROW) {
      Serial.print("[Up]");
    }
    else if (c == PS2_DOWNARROW) {
      Serial.print("[Down]");
    }
    else if (c == PS2_DELETE) {
      Serial.print("[Del]");
    }
    else {

// otherwise, just print all normal characters
      Serial.print(c);
    }
  }
}