MindWave hack with Arduino

so i recently purchased the MindWave headset from Neurosky (http://store.neurosky.com/products/mindwave-1).

The website gives great developer tools and instructions on how to interface with Arduino, which is basically what I did. here is the source code : (sorry to lazy to compress) ////////////////////////////////////////////////////////////////////////
// Arduino Bluetooth Interface with Mindwave
//
// This is example code provided by NeuroSky, Inc. and is provided
// license free.
////////////////////////////////////////////////////////////////////////

#define LED 13
#define BAUDRATE 115200
#define DEBUGOUTPUT 0
#define BLUESMIRFON 2

#define GREENLED1  3
#define GREENLED2  4
#define GREENLED3  5
#define YELLOWLED1 6
#define YELLOWLED2 7
#define YELLOWLED3 8
#define YELLOWLED4 9
#define REDLED1    10
#define REDLED2    11
#define REDLED3    12

// checksum variables
byte generatedChecksum = 0;
byte checksum = 0;
int payloadLength = 0;
byte payloadData[64] = {
0};
byte poorQuality = 0;
byte attention = 0;
byte meditation = 0;

// system variables
long lastReceivedPacket = 0;
boolean bigPacket = false;

//////////////////////////
// Microprocessor Setup //
//////////////////////////
void setup() {

pinMode(GREENLED1, OUTPUT);
pinMode(GREENLED2, OUTPUT);
pinMode(GREENLED3, OUTPUT);
pinMode(YELLOWLED1, OUTPUT);
pinMode(YELLOWLED2, OUTPUT);
pinMode(YELLOWLED3, OUTPUT);
pinMode(YELLOWLED4, OUTPUT);
pinMode(REDLED1, OUTPUT);
pinMode(REDLED2, OUTPUT);
pinMode(REDLED3, OUTPUT);

pinMode(LED, OUTPUT);
pinMode(BLUESMIRFON, OUTPUT);
digitalWrite(BLUESMIRFON, HIGH);
Serial.begin(BAUDRATE);           // USB

delay(3000) ;
Serial.print(194,BYTE) ;

}

////////////////////////////////
// Read data from Serial UART //
////////////////////////////////
byte ReadOneByte() {
int ByteRead;

while(!Serial.available());
ByteRead = Serial.read();

#if DEBUGOUTPUT
Serial.print((char)ByteRead);   // echo the same byte out the USB serial (for debug purposes)
#endif

return ByteRead;
}

/////////////
//MAIN LOOP//
/////////////
void loop() {

// Look for sync bytes
if(ReadOneByte() == 170) {
if(ReadOneByte() == 170) {

payloadLength = ReadOneByte();
if(payloadLength > 169)                      //Payload length can not be greater than 169
return;

generatedChecksum = 0;
for(int i = 0; i < payloadLength; i++) {
payloadData[i] = ReadOneByte();            //Read payload into memory
generatedChecksum += payloadData[i];
}

checksum = ReadOneByte();                      //Read checksum byte from stream
generatedChecksum = 255 – generatedChecksum;   //Take one’s compliment of generated checksum

if(checksum == generatedChecksum) {

poorQuality = 200;
attention = 0;
meditation = 0;

for(int i = 0; i < payloadLength; i++) {    // Parse the payload
switch (payloadData[i]) {
case 2:
i++;
poorQuality = payloadData[i];
bigPacket = true;
break;
case 4:
i++;
attention = payloadData[i];
break;
case 5:
i++;
meditation = payloadData[i];
break;
case 0×80:
i = i + 3;
break;
case 0×83:
i = i + 25;
break;
default:
break;
} // switch
} // for loop

#if !DEBUGOUTPUT

// *** Add your code here ***

if(bigPacket) {
if(poorQuality == 0)
digitalWrite(LED, HIGH);
else
digitalWrite(LED, LOW);
Serial.print(“PoorQuality: “);
Serial.print(poorQuality, DEC);
Serial.print(” Attention: “);
Serial.print(attention, DEC);
if(attention > 40)
digitalWrite(GREENLED1, HIGH);
else
digitalWrite(GREENLED1, LOW);

Serial.print(” Time since last packet: “);
Serial.print(millis() – lastReceivedPacket, DEC);
lastReceivedPacket = millis();
Serial.print(“\n”);

switch(attention / 10) {
case 0:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, LOW);
digitalWrite(GREENLED3, LOW);
digitalWrite(YELLOWLED1, LOW);
digitalWrite(YELLOWLED2, LOW);
digitalWrite(YELLOWLED3, LOW);
digitalWrite(YELLOWLED4, LOW);
digitalWrite(REDLED1, LOW);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 1:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, LOW);
digitalWrite(YELLOWLED1, LOW);
digitalWrite(YELLOWLED2, LOW);
digitalWrite(YELLOWLED3, LOW);
digitalWrite(YELLOWLED4, LOW);
digitalWrite(REDLED1, LOW);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 2:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, LOW);
digitalWrite(YELLOWLED2, LOW);
digitalWrite(YELLOWLED3, LOW);
digitalWrite(YELLOWLED4, LOW);
digitalWrite(REDLED1, LOW);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 3:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, LOW);
digitalWrite(YELLOWLED3, LOW);
digitalWrite(YELLOWLED4, LOW);
digitalWrite(REDLED1, LOW);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 4:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, HIGH);
digitalWrite(YELLOWLED3, LOW);
digitalWrite(YELLOWLED4, LOW);
digitalWrite(REDLED1, LOW);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 5:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, HIGH);
digitalWrite(YELLOWLED3, HIGH);
digitalWrite(YELLOWLED4, LOW);
digitalWrite(REDLED1, LOW);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 6:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, HIGH);
digitalWrite(YELLOWLED3, HIGH);
digitalWrite(YELLOWLED4, HIGH);
digitalWrite(REDLED1, LOW);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 7:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, HIGH);
digitalWrite(YELLOWLED3, HIGH);
digitalWrite(YELLOWLED4, HIGH);
digitalWrite(REDLED1, HIGH);
digitalWrite(REDLED2, LOW);
digitalWrite(REDLED3, LOW);
break;
case 8:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, HIGH);
digitalWrite(YELLOWLED3, HIGH);
digitalWrite(YELLOWLED4, HIGH);
digitalWrite(REDLED1, HIGH);
digitalWrite(REDLED2, HIGH);
digitalWrite(REDLED3, LOW);
break;
case 9:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, HIGH);
digitalWrite(YELLOWLED3, HIGH);
digitalWrite(YELLOWLED4, HIGH);
digitalWrite(REDLED1, HIGH);
digitalWrite(REDLED2, HIGH);
digitalWrite(REDLED3, HIGH);
break;
case 10:
digitalWrite(GREENLED1, HIGH);
digitalWrite(GREENLED2, HIGH);
digitalWrite(GREENLED3, HIGH);
digitalWrite(YELLOWLED1, HIGH);
digitalWrite(YELLOWLED2, HIGH);
digitalWrite(YELLOWLED3, HIGH);
digitalWrite(YELLOWLED4, HIGH);
digitalWrite(REDLED1, HIGH);
digitalWrite(REDLED2, HIGH);
digitalWrite(REDLED3, HIGH);
break;
}
}
#endif
bigPacket = false;
}
else {
// Checksum Error
}  // end if else for checksum
} // end if read 0xAA byte
} // end if read 0xAA byte
}

and here is the pdf tutorial link : http://developer.neurosky.com/docs/lib/exe/fetch.php?media=mindwave_arduino_and_leds.pdf

and some images of the result. thanks guys!